/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-RepeatedVariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 04:57:46,402 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 04:57:46,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 04:57:46,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 04:57:46,425 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 04:57:46,426 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 04:57:46,427 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 04:57:46,434 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 04:57:46,436 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 04:57:46,439 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 04:57:46,440 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 04:57:46,440 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 04:57:46,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 04:57:46,442 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 04:57:46,443 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 04:57:46,445 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 04:57:46,446 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 04:57:46,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 04:57:46,449 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 04:57:46,455 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 04:57:46,456 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 04:57:46,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 04:57:46,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 04:57:46,459 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 04:57:46,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 04:57:46,469 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 04:57:46,470 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 04:57:46,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 04:57:46,471 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-RepeatedVariableLbe.epf [2021-03-25 04:57:46,502 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 04:57:46,503 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 04:57:46,505 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 04:57:46,505 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 04:57:46,505 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 04:57:46,505 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 04:57:46,506 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 04:57:46,506 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 04:57:46,506 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 04:57:46,506 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 04:57:46,506 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 04:57:46,507 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 04:57:46,507 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 04:57:46,507 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 04:57:46,507 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 04:57:46,507 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 04:57:46,507 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 04:57:46,507 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 04:57:46,507 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 04:57:46,507 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 04:57:46,508 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 04:57:46,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 04:57:46,508 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 04:57:46,508 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 04:57:46,508 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 04:57:46,508 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 04:57:46,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 04:57:46,508 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 04:57:46,509 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 04:57:46,509 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 04:57:46,509 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 04:57:46,756 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 04:57:46,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 04:57:46,771 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 04:57:46,772 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 04:57:46,773 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 04:57:46,774 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.oepc.i [2021-03-25 04:57:46,819 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a21f596a/debcca8223234d3a9c453682c71e0600/FLAGc17f5847f [2021-03-25 04:57:47,154 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 04:57:47,155 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_tso.oepc.i [2021-03-25 04:57:47,171 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a21f596a/debcca8223234d3a9c453682c71e0600/FLAGc17f5847f [2021-03-25 04:57:47,541 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a21f596a/debcca8223234d3a9c453682c71e0600 [2021-03-25 04:57:47,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 04:57:47,544 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 04:57:47,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 04:57:47,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 04:57:47,550 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 04:57:47,550 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 04:57:47" (1/1) ... [2021-03-25 04:57:47,551 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d493856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:57:47, skipping insertion in model container [2021-03-25 04:57:47,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 04:57:47" (1/1) ... [2021-03-25 04:57:47,555 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 04:57:47,583 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 04:57:47,667 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/safe001_tso.oepc.i[950,963] [2021-03-25 04:57:47,759 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 04:57:47,764 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 04:57:47,801 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/safe001_tso.oepc.i[950,963] [2021-03-25 04:57:47,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 04:57:47,885 INFO L208 MainTranslator]: Completed translation [2021-03-25 04:57:47,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:57:47 WrapperNode [2021-03-25 04:57:47,886 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 04:57:47,887 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 04:57:47,887 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 04:57:47,887 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 04:57:47,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:57:47" (1/1) ... [2021-03-25 04:57:47,909 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:57:47" (1/1) ... [2021-03-25 04:57:47,925 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 04:57:47,925 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 04:57:47,925 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 04:57:47,925 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 04:57:47,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:57:47" (1/1) ... [2021-03-25 04:57:47,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:57:47" (1/1) ... [2021-03-25 04:57:47,944 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:57:47" (1/1) ... [2021-03-25 04:57:47,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:57:47" (1/1) ... [2021-03-25 04:57:47,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:57:47" (1/1) ... [2021-03-25 04:57:47,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:57:47" (1/1) ... [2021-03-25 04:57:47,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:57:47" (1/1) ... [2021-03-25 04:57:47,951 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 04:57:47,951 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 04:57:47,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 04:57:47,951 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 04:57:47,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:57:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 04:57:47,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 04:57:47,992 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 04:57:47,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 04:57:47,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 04:57:47,992 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-25 04:57:47,992 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-25 04:57:47,992 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-25 04:57:47,992 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-25 04:57:47,992 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-25 04:57:47,992 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-25 04:57:47,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 04:57:47,993 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 04:57:47,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 04:57:47,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 04:57:47,994 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 04:57:48,255 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 04:57:48,255 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-25 04:57:48,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 04:57:48 BoogieIcfgContainer [2021-03-25 04:57:48,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 04:57:48,257 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 04:57:48,257 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 04:57:48,259 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 04:57:48,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 04:57:47" (1/3) ... [2021-03-25 04:57:48,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b4a8e23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 04:57:48, skipping insertion in model container [2021-03-25 04:57:48,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:57:47" (2/3) ... [2021-03-25 04:57:48,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b4a8e23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 04:57:48, skipping insertion in model container [2021-03-25 04:57:48,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 04:57:48" (3/3) ... [2021-03-25 04:57:48,261 INFO L111 eAbstractionObserver]: Analyzing ICFG safe001_tso.oepc.i [2021-03-25 04:57:48,264 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 04:57:48,266 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 04:57:48,267 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 04:57:48,284 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,284 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,284 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,284 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,284 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,284 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,284 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,284 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,285 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,285 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,285 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,285 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,285 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,285 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,285 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,286 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,286 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,286 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,286 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,286 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,286 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,286 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,286 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,287 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,287 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,287 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,287 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,287 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,287 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,287 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,287 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,287 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,288 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,288 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,288 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,288 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,289 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,289 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,289 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,290 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,293 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,293 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,293 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,293 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,294 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,294 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,294 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,294 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:57:48,295 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 04:57:48,307 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 04:57:48,320 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 04:57:48,320 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 04:57:48,320 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 04:57:48,320 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 04:57:48,320 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 04:57:48,320 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 04:57:48,320 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 04:57:48,321 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 04:57:48,329 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2021-03-25 04:57:48,371 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2021-03-25 04:57:48,371 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 04:57:48,376 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-25 04:57:48,376 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 74 transitions, 163 flow [2021-03-25 04:57:48,385 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 59 transitions, 127 flow [2021-03-25 04:57:48,386 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:57:48,397 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 59 transitions, 127 flow [2021-03-25 04:57:48,400 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 59 transitions, 127 flow [2021-03-25 04:57:48,402 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 59 transitions, 127 flow [2021-03-25 04:57:48,425 INFO L129 PetriNetUnfolder]: 1/59 cut-off events. [2021-03-25 04:57:48,425 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 04:57:48,426 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 59 events. 1/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-25 04:57:48,428 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-25 04:57:49,380 INFO L154 LiptonReduction]: Checked pairs total: 996 [2021-03-25 04:57:49,380 INFO L156 LiptonReduction]: Total number of compositions: 37 [2021-03-25 04:57:49,383 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 998 [2021-03-25 04:57:49,390 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-03-25 04:57:49,390 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 04:57:49,390 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:57:49,390 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:57:49,391 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:57:49,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:57:49,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1399899973, now seen corresponding path program 1 times [2021-03-25 04:57:49,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:57:49,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795456443] [2021-03-25 04:57:49,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:57:49,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:57:49,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:57:49,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 04:57:49,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:57:49,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:57:49,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 04:57:49,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795456443] [2021-03-25 04:57:49,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:57:49,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 04:57:49,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129252176] [2021-03-25 04:57:49,596 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 04:57:49,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:57:49,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 04:57:49,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 04:57:49,610 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 111 [2021-03-25 04:57:49,613 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 53 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:49,614 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:57:49,614 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 111 [2021-03-25 04:57:49,618 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:57:49,634 INFO L129 PetriNetUnfolder]: 3/32 cut-off events. [2021-03-25 04:57:49,634 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 04:57:49,635 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 32 events. 3/32 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 45 event pairs, 1 based on Foata normal form. 1/31 useless extension candidates. Maximal degree in co-relation 40. Up to 10 conditions per place. [2021-03-25 04:57:49,636 INFO L132 encePairwiseOnDemand]: 107/111 looper letters, 3 selfloop transitions, 3 changer transitions 0/24 dead transitions. [2021-03-25 04:57:49,636 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 24 transitions, 69 flow [2021-03-25 04:57:49,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 04:57:49,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 04:57:49,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 301 transitions. [2021-03-25 04:57:49,648 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9039039039039038 [2021-03-25 04:57:49,648 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 301 transitions. [2021-03-25 04:57:49,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 301 transitions. [2021-03-25 04:57:49,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:57:49,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 301 transitions. [2021-03-25 04:57:49,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:49,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:49,660 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:49,661 INFO L185 Difference]: Start difference. First operand has 32 places, 22 transitions, 53 flow. Second operand 3 states and 301 transitions. [2021-03-25 04:57:49,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 24 transitions, 69 flow [2021-03-25 04:57:49,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 24 transitions, 66 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 04:57:49,664 INFO L241 Difference]: Finished difference. Result has 32 places, 24 transitions, 69 flow [2021-03-25 04:57:49,665 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2021-03-25 04:57:49,666 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 0 predicate places. [2021-03-25 04:57:49,666 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:57:49,666 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 24 transitions, 69 flow [2021-03-25 04:57:49,667 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 32 places, 24 transitions, 69 flow [2021-03-25 04:57:49,667 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 24 transitions, 69 flow [2021-03-25 04:57:49,671 INFO L129 PetriNetUnfolder]: 3/30 cut-off events. [2021-03-25 04:57:49,671 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 04:57:49,672 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 30 events. 3/30 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 48 event pairs, 1 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 40. Up to 10 conditions per place. [2021-03-25 04:57:49,672 INFO L142 LiptonReduction]: Number of co-enabled transitions 188 [2021-03-25 04:57:50,018 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-03-25 04:57:50,203 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-03-25 04:57:50,264 INFO L154 LiptonReduction]: Checked pairs total: 371 [2021-03-25 04:57:50,264 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 04:57:50,265 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 598 [2021-03-25 04:57:50,266 INFO L480 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 59 flow [2021-03-25 04:57:50,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:50,267 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:57:50,267 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:57:50,267 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 04:57:50,267 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:57:50,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:57:50,268 INFO L82 PathProgramCache]: Analyzing trace with hash -447226641, now seen corresponding path program 1 times [2021-03-25 04:57:50,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:57:50,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095746174] [2021-03-25 04:57:50,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:57:50,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:57:50,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:57:50,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 04:57:50,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:57:50,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:57:50,314 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 04:57:50,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 04:57:50,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 04:57:50,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095746174] [2021-03-25 04:57:50,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:57:50,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 04:57:50,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996437881] [2021-03-25 04:57:50,323 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 04:57:50,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:57:50,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 04:57:50,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 04:57:50,324 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 116 [2021-03-25 04:57:50,325 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 59 flow. Second operand has 4 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:50,325 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:57:50,325 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 116 [2021-03-25 04:57:50,325 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:57:50,361 INFO L129 PetriNetUnfolder]: 41/125 cut-off events. [2021-03-25 04:57:50,361 INFO L130 PetriNetUnfolder]: For 38/59 co-relation queries the response was YES. [2021-03-25 04:57:50,362 INFO L84 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 125 events. 41/125 cut-off events. For 38/59 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 548 event pairs, 7 based on Foata normal form. 15/135 useless extension candidates. Maximal degree in co-relation 264. Up to 39 conditions per place. [2021-03-25 04:57:50,363 INFO L132 encePairwiseOnDemand]: 108/116 looper letters, 14 selfloop transitions, 10 changer transitions 0/33 dead transitions. [2021-03-25 04:57:50,363 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 33 transitions, 149 flow [2021-03-25 04:57:50,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 04:57:50,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 04:57:50,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 370 transitions. [2021-03-25 04:57:50,365 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7974137931034483 [2021-03-25 04:57:50,365 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 370 transitions. [2021-03-25 04:57:50,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 370 transitions. [2021-03-25 04:57:50,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:57:50,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 370 transitions. [2021-03-25 04:57:50,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.5) internal successors, (370), 4 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:50,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:50,368 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:50,368 INFO L185 Difference]: Start difference. First operand has 27 places, 19 transitions, 59 flow. Second operand 4 states and 370 transitions. [2021-03-25 04:57:50,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 33 transitions, 149 flow [2021-03-25 04:57:50,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 33 transitions, 144 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 04:57:50,370 INFO L241 Difference]: Finished difference. Result has 32 places, 28 transitions, 138 flow [2021-03-25 04:57:50,370 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=32, PETRI_TRANSITIONS=28} [2021-03-25 04:57:50,370 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 0 predicate places. [2021-03-25 04:57:50,370 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:57:50,371 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 28 transitions, 138 flow [2021-03-25 04:57:50,371 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 32 places, 28 transitions, 138 flow [2021-03-25 04:57:50,372 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 28 transitions, 138 flow [2021-03-25 04:57:50,381 INFO L129 PetriNetUnfolder]: 26/99 cut-off events. [2021-03-25 04:57:50,381 INFO L130 PetriNetUnfolder]: For 75/85 co-relation queries the response was YES. [2021-03-25 04:57:50,382 INFO L84 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 99 events. 26/99 cut-off events. For 75/85 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 455 event pairs, 5 based on Foata normal form. 4/99 useless extension candidates. Maximal degree in co-relation 241. Up to 32 conditions per place. [2021-03-25 04:57:50,382 INFO L142 LiptonReduction]: Number of co-enabled transitions 176 [2021-03-25 04:57:50,384 INFO L154 LiptonReduction]: Checked pairs total: 72 [2021-03-25 04:57:50,384 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 04:57:50,384 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 14 [2021-03-25 04:57:50,385 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 28 transitions, 138 flow [2021-03-25 04:57:50,385 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:50,385 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:57:50,385 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:57:50,385 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 04:57:50,385 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:57:50,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:57:50,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1235325918, now seen corresponding path program 1 times [2021-03-25 04:57:50,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:57:50,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871093744] [2021-03-25 04:57:50,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:57:50,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:57:50,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:57:50,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:57:50,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 04:57:50,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871093744] [2021-03-25 04:57:50,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:57:50,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-25 04:57:50,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370410003] [2021-03-25 04:57:50,426 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 04:57:50,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:57:50,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 04:57:50,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 04:57:50,427 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 116 [2021-03-25 04:57:50,428 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:50,428 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:57:50,428 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 116 [2021-03-25 04:57:50,428 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:57:50,440 INFO L129 PetriNetUnfolder]: 23/88 cut-off events. [2021-03-25 04:57:50,441 INFO L130 PetriNetUnfolder]: For 131/157 co-relation queries the response was YES. [2021-03-25 04:57:50,441 INFO L84 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 88 events. 23/88 cut-off events. For 131/157 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 361 event pairs, 5 based on Foata normal form. 4/86 useless extension candidates. Maximal degree in co-relation 232. Up to 30 conditions per place. [2021-03-25 04:57:50,441 INFO L132 encePairwiseOnDemand]: 113/116 looper letters, 1 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2021-03-25 04:57:50,442 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 146 flow [2021-03-25 04:57:50,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 04:57:50,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 04:57:50,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 307 transitions. [2021-03-25 04:57:50,446 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.882183908045977 [2021-03-25 04:57:50,447 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 307 transitions. [2021-03-25 04:57:50,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 307 transitions. [2021-03-25 04:57:50,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:57:50,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 307 transitions. [2021-03-25 04:57:50,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:50,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:50,448 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:50,448 INFO L185 Difference]: Start difference. First operand has 32 places, 28 transitions, 138 flow. Second operand 3 states and 307 transitions. [2021-03-25 04:57:50,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 146 flow [2021-03-25 04:57:50,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 28 transitions, 146 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-25 04:57:50,451 INFO L241 Difference]: Finished difference. Result has 35 places, 28 transitions, 149 flow [2021-03-25 04:57:50,451 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2021-03-25 04:57:50,451 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 3 predicate places. [2021-03-25 04:57:50,451 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:57:50,451 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 28 transitions, 149 flow [2021-03-25 04:57:50,452 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 28 transitions, 149 flow [2021-03-25 04:57:50,452 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 28 transitions, 149 flow [2021-03-25 04:57:50,460 INFO L129 PetriNetUnfolder]: 23/91 cut-off events. [2021-03-25 04:57:50,460 INFO L130 PetriNetUnfolder]: For 101/109 co-relation queries the response was YES. [2021-03-25 04:57:50,460 INFO L84 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 91 events. 23/91 cut-off events. For 101/109 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 396 event pairs, 6 based on Foata normal form. 3/90 useless extension candidates. Maximal degree in co-relation 238. Up to 29 conditions per place. [2021-03-25 04:57:50,464 INFO L142 LiptonReduction]: Number of co-enabled transitions 176 [2021-03-25 04:57:50,468 INFO L154 LiptonReduction]: Checked pairs total: 86 [2021-03-25 04:57:50,468 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 04:57:50,468 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 17 [2021-03-25 04:57:50,469 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 149 flow [2021-03-25 04:57:50,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:50,469 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:57:50,470 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:57:50,472 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 04:57:50,472 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:57:50,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:57:50,472 INFO L82 PathProgramCache]: Analyzing trace with hash -464638534, now seen corresponding path program 1 times [2021-03-25 04:57:50,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:57:50,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374871655] [2021-03-25 04:57:50,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:57:50,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:57:50,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:57:50,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:57:50,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:57:50,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:57:50,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 04:57:50,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374871655] [2021-03-25 04:57:50,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:57:50,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 04:57:50,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296698605] [2021-03-25 04:57:50,528 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 04:57:50,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:57:50,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 04:57:50,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 04:57:50,530 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 116 [2021-03-25 04:57:50,530 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 149 flow. Second operand has 4 states, 4 states have (on average 94.25) internal successors, (377), 4 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) [2021-03-25 04:57:50,530 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:57:50,530 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 116 [2021-03-25 04:57:50,530 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:57:50,553 INFO L129 PetriNetUnfolder]: 22/96 cut-off events. [2021-03-25 04:57:50,553 INFO L130 PetriNetUnfolder]: For 159/185 co-relation queries the response was YES. [2021-03-25 04:57:50,554 INFO L84 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 96 events. 22/96 cut-off events. For 159/185 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 415 event pairs, 2 based on Foata normal form. 11/104 useless extension candidates. Maximal degree in co-relation 286. Up to 27 conditions per place. [2021-03-25 04:57:50,554 INFO L132 encePairwiseOnDemand]: 111/116 looper letters, 7 selfloop transitions, 4 changer transitions 9/34 dead transitions. [2021-03-25 04:57:50,554 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 34 transitions, 216 flow [2021-03-25 04:57:50,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 04:57:50,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 04:57:50,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 385 transitions. [2021-03-25 04:57:50,555 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8297413793103449 [2021-03-25 04:57:50,555 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 385 transitions. [2021-03-25 04:57:50,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 385 transitions. [2021-03-25 04:57:50,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:57:50,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 385 transitions. [2021-03-25 04:57:50,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:50,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:50,557 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:50,557 INFO L185 Difference]: Start difference. First operand has 35 places, 28 transitions, 149 flow. Second operand 4 states and 385 transitions. [2021-03-25 04:57:50,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 34 transitions, 216 flow [2021-03-25 04:57:50,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 34 transitions, 208 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 04:57:50,561 INFO L241 Difference]: Finished difference. Result has 37 places, 23 transitions, 124 flow [2021-03-25 04:57:50,561 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=37, PETRI_TRANSITIONS=23} [2021-03-25 04:57:50,561 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 5 predicate places. [2021-03-25 04:57:50,561 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:57:50,561 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 23 transitions, 124 flow [2021-03-25 04:57:50,561 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 23 transitions, 124 flow [2021-03-25 04:57:50,562 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 23 transitions, 124 flow [2021-03-25 04:57:50,565 INFO L129 PetriNetUnfolder]: 9/50 cut-off events. [2021-03-25 04:57:50,565 INFO L130 PetriNetUnfolder]: For 64/64 co-relation queries the response was YES. [2021-03-25 04:57:50,565 INFO L84 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 50 events. 9/50 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 148 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 139. Up to 15 conditions per place. [2021-03-25 04:57:50,566 INFO L142 LiptonReduction]: Number of co-enabled transitions 128 [2021-03-25 04:57:50,586 INFO L154 LiptonReduction]: Checked pairs total: 69 [2021-03-25 04:57:50,586 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 04:57:50,586 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 25 [2021-03-25 04:57:50,586 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 23 transitions, 129 flow [2021-03-25 04:57:50,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 94.25) internal successors, (377), 4 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) [2021-03-25 04:57:50,587 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:57:50,587 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:57:50,587 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 04:57:50,587 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:57:50,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:57:50,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1897329534, now seen corresponding path program 1 times [2021-03-25 04:57:50,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:57:50,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933029447] [2021-03-25 04:57:50,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:57:50,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:57:50,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:57:50,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:57:50,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 04:57:50,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933029447] [2021-03-25 04:57:50,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:57:50,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-25 04:57:50,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254428726] [2021-03-25 04:57:50,631 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 04:57:50,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:57:50,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 04:57:50,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 04:57:50,632 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 117 [2021-03-25 04:57:50,633 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 23 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:50,633 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:57:50,633 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 117 [2021-03-25 04:57:50,633 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:57:50,639 INFO L129 PetriNetUnfolder]: 8/46 cut-off events. [2021-03-25 04:57:50,639 INFO L130 PetriNetUnfolder]: For 91/92 co-relation queries the response was YES. [2021-03-25 04:57:50,639 INFO L84 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 46 events. 8/46 cut-off events. For 91/92 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 117 event pairs, 1 based on Foata normal form. 1/46 useless extension candidates. Maximal degree in co-relation 138. Up to 14 conditions per place. [2021-03-25 04:57:50,639 INFO L132 encePairwiseOnDemand]: 114/117 looper letters, 1 selfloop transitions, 3 changer transitions 0/23 dead transitions. [2021-03-25 04:57:50,639 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 23 transitions, 137 flow [2021-03-25 04:57:50,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 04:57:50,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 04:57:50,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 310 transitions. [2021-03-25 04:57:50,640 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8831908831908832 [2021-03-25 04:57:50,640 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 310 transitions. [2021-03-25 04:57:50,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 310 transitions. [2021-03-25 04:57:50,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:57:50,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 310 transitions. [2021-03-25 04:57:50,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:50,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:50,642 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:50,642 INFO L185 Difference]: Start difference. First operand has 37 places, 23 transitions, 129 flow. Second operand 3 states and 310 transitions. [2021-03-25 04:57:50,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 23 transitions, 137 flow [2021-03-25 04:57:50,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 23 transitions, 115 flow, removed 3 selfloop flow, removed 5 redundant places. [2021-03-25 04:57:50,643 INFO L241 Difference]: Finished difference. Result has 35 places, 23 transitions, 118 flow [2021-03-25 04:57:50,643 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=35, PETRI_TRANSITIONS=23} [2021-03-25 04:57:50,643 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 3 predicate places. [2021-03-25 04:57:50,643 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:57:50,643 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 23 transitions, 118 flow [2021-03-25 04:57:50,644 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 23 transitions, 118 flow [2021-03-25 04:57:50,644 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 23 transitions, 118 flow [2021-03-25 04:57:50,646 INFO L129 PetriNetUnfolder]: 8/47 cut-off events. [2021-03-25 04:57:50,646 INFO L130 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2021-03-25 04:57:50,647 INFO L84 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 47 events. 8/47 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 125 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 123. Up to 14 conditions per place. [2021-03-25 04:57:50,647 INFO L142 LiptonReduction]: Number of co-enabled transitions 128 [2021-03-25 04:57:50,648 INFO L154 LiptonReduction]: Checked pairs total: 56 [2021-03-25 04:57:50,648 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 04:57:50,648 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5 [2021-03-25 04:57:50,648 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 23 transitions, 118 flow [2021-03-25 04:57:50,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:50,649 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:57:50,649 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:57:50,649 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 04:57:50,649 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:57:50,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:57:50,649 INFO L82 PathProgramCache]: Analyzing trace with hash 502386072, now seen corresponding path program 1 times [2021-03-25 04:57:50,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:57:50,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724498972] [2021-03-25 04:57:50,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:57:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:57:50,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:57:50,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 04:57:50,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:57:50,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:57:50,668 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 04:57:50,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 04:57:50,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 04:57:50,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724498972] [2021-03-25 04:57:50,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:57:50,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 04:57:50,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288835748] [2021-03-25 04:57:50,675 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 04:57:50,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:57:50,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 04:57:50,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 04:57:50,676 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 117 [2021-03-25 04:57:50,676 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 23 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:50,676 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:57:50,676 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 117 [2021-03-25 04:57:50,676 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:57:50,691 INFO L129 PetriNetUnfolder]: 9/46 cut-off events. [2021-03-25 04:57:50,692 INFO L130 PetriNetUnfolder]: For 45/49 co-relation queries the response was YES. [2021-03-25 04:57:50,692 INFO L84 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 46 events. 9/46 cut-off events. For 45/49 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 114 event pairs, 0 based on Foata normal form. 2/48 useless extension candidates. Maximal degree in co-relation 148. Up to 14 conditions per place. [2021-03-25 04:57:50,692 INFO L132 encePairwiseOnDemand]: 109/117 looper letters, 8 selfloop transitions, 11 changer transitions 0/28 dead transitions. [2021-03-25 04:57:50,692 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 28 transitions, 186 flow [2021-03-25 04:57:50,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 04:57:50,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 04:57:50,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 363 transitions. [2021-03-25 04:57:50,693 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7756410256410257 [2021-03-25 04:57:50,693 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 363 transitions. [2021-03-25 04:57:50,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 363 transitions. [2021-03-25 04:57:50,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:57:50,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 363 transitions. [2021-03-25 04:57:50,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:50,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:50,696 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:50,696 INFO L185 Difference]: Start difference. First operand has 35 places, 23 transitions, 118 flow. Second operand 4 states and 363 transitions. [2021-03-25 04:57:50,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 28 transitions, 186 flow [2021-03-25 04:57:50,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 28 transitions, 178 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 04:57:50,698 INFO L241 Difference]: Finished difference. Result has 39 places, 28 transitions, 194 flow [2021-03-25 04:57:50,698 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=194, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2021-03-25 04:57:50,698 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 7 predicate places. [2021-03-25 04:57:50,698 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:57:50,698 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 28 transitions, 194 flow [2021-03-25 04:57:50,698 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 28 transitions, 194 flow [2021-03-25 04:57:50,699 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 39 places, 28 transitions, 194 flow [2021-03-25 04:57:50,702 INFO L129 PetriNetUnfolder]: 9/46 cut-off events. [2021-03-25 04:57:50,702 INFO L130 PetriNetUnfolder]: For 74/74 co-relation queries the response was YES. [2021-03-25 04:57:50,702 INFO L84 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 46 events. 9/46 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 117 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 151. Up to 14 conditions per place. [2021-03-25 04:57:50,703 INFO L142 LiptonReduction]: Number of co-enabled transitions 150 [2021-03-25 04:57:50,704 INFO L154 LiptonReduction]: Checked pairs total: 116 [2021-03-25 04:57:50,704 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 04:57:50,704 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-03-25 04:57:50,707 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 194 flow [2021-03-25 04:57:50,707 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:50,707 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:57:50,707 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:57:50,707 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 04:57:50,707 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:57:50,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:57:50,708 INFO L82 PathProgramCache]: Analyzing trace with hash 259007402, now seen corresponding path program 1 times [2021-03-25 04:57:50,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:57:50,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544804486] [2021-03-25 04:57:50,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:57:50,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:57:50,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:57:50,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:57:50,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:57:50,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:57:50,741 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 04:57:50,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 04:57:50,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 04:57:50,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544804486] [2021-03-25 04:57:50,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:57:50,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 04:57:50,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012361032] [2021-03-25 04:57:50,751 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 04:57:50,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:57:50,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 04:57:50,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-25 04:57:50,752 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 117 [2021-03-25 04:57:50,752 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 194 flow. Second operand has 5 states, 5 states have (on average 88.4) internal successors, (442), 5 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:50,752 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:57:50,753 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 117 [2021-03-25 04:57:50,753 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:57:50,780 INFO L129 PetriNetUnfolder]: 8/56 cut-off events. [2021-03-25 04:57:50,780 INFO L130 PetriNetUnfolder]: For 105/107 co-relation queries the response was YES. [2021-03-25 04:57:50,780 INFO L84 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 56 events. 8/56 cut-off events. For 105/107 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 182 event pairs, 0 based on Foata normal form. 2/58 useless extension candidates. Maximal degree in co-relation 213. Up to 16 conditions per place. [2021-03-25 04:57:50,781 INFO L132 encePairwiseOnDemand]: 109/117 looper letters, 7 selfloop transitions, 8 changer transitions 9/33 dead transitions. [2021-03-25 04:57:50,781 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 33 transitions, 285 flow [2021-03-25 04:57:50,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 04:57:50,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 04:57:50,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 453 transitions. [2021-03-25 04:57:50,782 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7743589743589744 [2021-03-25 04:57:50,782 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 453 transitions. [2021-03-25 04:57:50,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 453 transitions. [2021-03-25 04:57:50,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:57:50,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 453 transitions. [2021-03-25 04:57:50,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.6) internal successors, (453), 5 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:50,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:50,784 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:50,784 INFO L185 Difference]: Start difference. First operand has 39 places, 28 transitions, 194 flow. Second operand 5 states and 453 transitions. [2021-03-25 04:57:50,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 33 transitions, 285 flow [2021-03-25 04:57:50,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 33 transitions, 279 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 04:57:50,786 INFO L241 Difference]: Finished difference. Result has 44 places, 23 transitions, 174 flow [2021-03-25 04:57:50,786 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=174, PETRI_PLACES=44, PETRI_TRANSITIONS=23} [2021-03-25 04:57:50,786 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 12 predicate places. [2021-03-25 04:57:50,786 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:57:50,786 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 23 transitions, 174 flow [2021-03-25 04:57:50,786 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 23 transitions, 174 flow [2021-03-25 04:57:50,786 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 23 transitions, 174 flow [2021-03-25 04:57:50,791 INFO L129 PetriNetUnfolder]: 4/32 cut-off events. [2021-03-25 04:57:50,791 INFO L130 PetriNetUnfolder]: For 74/74 co-relation queries the response was YES. [2021-03-25 04:57:50,791 INFO L84 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 32 events. 4/32 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 55 event pairs, 1 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 121. Up to 9 conditions per place. [2021-03-25 04:57:50,791 INFO L142 LiptonReduction]: Number of co-enabled transitions 94 [2021-03-25 04:57:50,810 INFO L154 LiptonReduction]: Checked pairs total: 132 [2021-03-25 04:57:50,810 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 04:57:50,810 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 24 [2021-03-25 04:57:50,811 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 22 transitions, 170 flow [2021-03-25 04:57:50,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 88.4) internal successors, (442), 5 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:50,811 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:57:50,811 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:57:50,811 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 04:57:50,811 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:57:50,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:57:50,812 INFO L82 PathProgramCache]: Analyzing trace with hash -230107120, now seen corresponding path program 1 times [2021-03-25 04:57:50,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:57:50,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825229046] [2021-03-25 04:57:50,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:57:50,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:57:50,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:57:50,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 04:57:50,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:57:50,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:57:50,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:57:50,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:57:50,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 04:57:50,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825229046] [2021-03-25 04:57:50,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:57:50,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 04:57:50,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706309683] [2021-03-25 04:57:50,855 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 04:57:50,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:57:50,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 04:57:50,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 04:57:50,856 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 118 [2021-03-25 04:57:50,856 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 22 transitions, 170 flow. Second operand has 4 states, 4 states have (on average 94.5) internal successors, (378), 4 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:50,856 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:57:50,856 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 118 [2021-03-25 04:57:50,856 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:57:50,878 INFO L129 PetriNetUnfolder]: 3/34 cut-off events. [2021-03-25 04:57:50,878 INFO L130 PetriNetUnfolder]: For 121/126 co-relation queries the response was YES. [2021-03-25 04:57:50,878 INFO L84 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 34 events. 3/34 cut-off events. For 121/126 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 74 event pairs, 0 based on Foata normal form. 6/40 useless extension candidates. Maximal degree in co-relation 134. Up to 10 conditions per place. [2021-03-25 04:57:50,883 INFO L132 encePairwiseOnDemand]: 114/118 looper letters, 4 selfloop transitions, 2 changer transitions 7/23 dead transitions. [2021-03-25 04:57:50,883 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 23 transitions, 198 flow [2021-03-25 04:57:50,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 04:57:50,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 04:57:50,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 475 transitions. [2021-03-25 04:57:50,884 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8050847457627118 [2021-03-25 04:57:50,884 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 475 transitions. [2021-03-25 04:57:50,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 475 transitions. [2021-03-25 04:57:50,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:57:50,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 475 transitions. [2021-03-25 04:57:50,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:50,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:50,887 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:50,887 INFO L185 Difference]: Start difference. First operand has 43 places, 22 transitions, 170 flow. Second operand 5 states and 475 transitions. [2021-03-25 04:57:50,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 23 transitions, 198 flow [2021-03-25 04:57:50,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 23 transitions, 176 flow, removed 3 selfloop flow, removed 6 redundant places. [2021-03-25 04:57:50,889 INFO L241 Difference]: Finished difference. Result has 42 places, 16 transitions, 95 flow [2021-03-25 04:57:50,889 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=95, PETRI_PLACES=42, PETRI_TRANSITIONS=16} [2021-03-25 04:57:50,889 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 10 predicate places. [2021-03-25 04:57:50,889 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:57:50,889 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 42 places, 16 transitions, 95 flow [2021-03-25 04:57:50,889 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 42 places, 16 transitions, 95 flow [2021-03-25 04:57:50,889 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 40 places, 16 transitions, 95 flow [2021-03-25 04:57:50,891 INFO L129 PetriNetUnfolder]: 0/18 cut-off events. [2021-03-25 04:57:50,891 INFO L130 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2021-03-25 04:57:50,891 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 18 events. 0/18 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 9 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-03-25 04:57:50,892 INFO L142 LiptonReduction]: Number of co-enabled transitions 46 [2021-03-25 04:57:50,934 INFO L154 LiptonReduction]: Checked pairs total: 42 [2021-03-25 04:57:50,934 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 04:57:50,934 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 45 [2021-03-25 04:57:50,937 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 14 transitions, 89 flow [2021-03-25 04:57:50,938 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 94.5) internal successors, (378), 4 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:50,938 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:57:50,938 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:57:50,938 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 04:57:50,938 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:57:50,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:57:50,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1424750409, now seen corresponding path program 1 times [2021-03-25 04:57:50,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:57:50,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766737288] [2021-03-25 04:57:50,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:57:50,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:57:50,971 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-25 04:57:50,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-25 04:57:50,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:57:50,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:57:50,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 04:57:50,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766737288] [2021-03-25 04:57:50,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:57:50,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 04:57:50,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819338445] [2021-03-25 04:57:50,977 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 04:57:50,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:57:50,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 04:57:50,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 04:57:50,981 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 120 [2021-03-25 04:57:50,981 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 14 transitions, 89 flow. Second operand has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:50,981 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:57:50,981 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 120 [2021-03-25 04:57:50,981 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:57:51,005 INFO L129 PetriNetUnfolder]: 23/60 cut-off events. [2021-03-25 04:57:51,005 INFO L130 PetriNetUnfolder]: For 398/417 co-relation queries the response was YES. [2021-03-25 04:57:51,005 INFO L84 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 60 events. 23/60 cut-off events. For 398/417 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 179 event pairs, 9 based on Foata normal form. 5/64 useless extension candidates. Maximal degree in co-relation 216. Up to 39 conditions per place. [2021-03-25 04:57:51,005 INFO L132 encePairwiseOnDemand]: 114/120 looper letters, 5 selfloop transitions, 3 changer transitions 8/24 dead transitions. [2021-03-25 04:57:51,005 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 24 transitions, 174 flow [2021-03-25 04:57:51,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 04:57:51,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 04:57:51,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 478 transitions. [2021-03-25 04:57:51,007 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7966666666666666 [2021-03-25 04:57:51,007 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 478 transitions. [2021-03-25 04:57:51,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 478 transitions. [2021-03-25 04:57:51,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:57:51,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 478 transitions. [2021-03-25 04:57:51,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 95.6) internal successors, (478), 5 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:51,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:51,009 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:51,009 INFO L185 Difference]: Start difference. First operand has 38 places, 14 transitions, 89 flow. Second operand 5 states and 478 transitions. [2021-03-25 04:57:51,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 24 transitions, 174 flow [2021-03-25 04:57:51,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 24 transitions, 118 flow, removed 4 selfloop flow, removed 12 redundant places. [2021-03-25 04:57:51,010 INFO L241 Difference]: Finished difference. Result has 33 places, 16 transitions, 85 flow [2021-03-25 04:57:51,010 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=85, PETRI_PLACES=33, PETRI_TRANSITIONS=16} [2021-03-25 04:57:51,010 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2021-03-25 04:57:51,010 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:57:51,010 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 33 places, 16 transitions, 85 flow [2021-03-25 04:57:51,011 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 33 places, 16 transitions, 85 flow [2021-03-25 04:57:51,011 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 16 transitions, 85 flow [2021-03-25 04:57:51,014 INFO L129 PetriNetUnfolder]: 14/41 cut-off events. [2021-03-25 04:57:51,014 INFO L130 PetriNetUnfolder]: For 75/80 co-relation queries the response was YES. [2021-03-25 04:57:51,014 INFO L84 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 41 events. 14/41 cut-off events. For 75/80 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 97 event pairs, 8 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 134. Up to 30 conditions per place. [2021-03-25 04:57:51,015 INFO L142 LiptonReduction]: Number of co-enabled transitions 22 [2021-03-25 04:57:51,047 INFO L154 LiptonReduction]: Checked pairs total: 4 [2021-03-25 04:57:51,047 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 04:57:51,047 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 37 [2021-03-25 04:57:51,048 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 16 transitions, 89 flow [2021-03-25 04:57:51,048 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:51,048 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:57:51,048 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:57:51,048 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-25 04:57:51,048 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:57:51,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:57:51,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1454863344, now seen corresponding path program 1 times [2021-03-25 04:57:51,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:57:51,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957191169] [2021-03-25 04:57:51,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:57:51,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:57:51,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:57:51,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:57:51,084 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-25 04:57:51,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-25 04:57:51,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:57:51,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:57:51,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 04:57:51,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957191169] [2021-03-25 04:57:51,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:57:51,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 04:57:51,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409861654] [2021-03-25 04:57:51,090 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 04:57:51,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:57:51,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 04:57:51,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 04:57:51,091 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 121 [2021-03-25 04:57:51,091 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 16 transitions, 89 flow. Second operand has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:51,091 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:57:51,091 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 121 [2021-03-25 04:57:51,091 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:57:51,127 INFO L129 PetriNetUnfolder]: 9/38 cut-off events. [2021-03-25 04:57:51,127 INFO L130 PetriNetUnfolder]: For 121/135 co-relation queries the response was YES. [2021-03-25 04:57:51,128 INFO L84 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 38 events. 9/38 cut-off events. For 121/135 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 84 event pairs, 1 based on Foata normal form. 6/43 useless extension candidates. Maximal degree in co-relation 146. Up to 27 conditions per place. [2021-03-25 04:57:51,128 INFO L132 encePairwiseOnDemand]: 114/121 looper letters, 3 selfloop transitions, 5 changer transitions 10/26 dead transitions. [2021-03-25 04:57:51,128 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 26 transitions, 195 flow [2021-03-25 04:57:51,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 04:57:51,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 04:57:51,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 572 transitions. [2021-03-25 04:57:51,129 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7878787878787878 [2021-03-25 04:57:51,129 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 572 transitions. [2021-03-25 04:57:51,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 572 transitions. [2021-03-25 04:57:51,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:57:51,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 572 transitions. [2021-03-25 04:57:51,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 95.33333333333333) internal successors, (572), 6 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:51,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 121.0) internal successors, (847), 7 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:51,131 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 121.0) internal successors, (847), 7 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:51,132 INFO L185 Difference]: Start difference. First operand has 31 places, 16 transitions, 89 flow. Second operand 6 states and 572 transitions. [2021-03-25 04:57:51,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 26 transitions, 195 flow [2021-03-25 04:57:51,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 26 transitions, 190 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-25 04:57:51,132 INFO L241 Difference]: Finished difference. Result has 37 places, 16 transitions, 108 flow [2021-03-25 04:57:51,133 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=108, PETRI_PLACES=37, PETRI_TRANSITIONS=16} [2021-03-25 04:57:51,133 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 5 predicate places. [2021-03-25 04:57:51,133 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:57:51,133 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 16 transitions, 108 flow [2021-03-25 04:57:51,133 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 16 transitions, 108 flow [2021-03-25 04:57:51,134 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 16 transitions, 108 flow [2021-03-25 04:57:51,136 INFO L129 PetriNetUnfolder]: 2/21 cut-off events. [2021-03-25 04:57:51,136 INFO L130 PetriNetUnfolder]: For 68/74 co-relation queries the response was YES. [2021-03-25 04:57:51,136 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 21 events. 2/21 cut-off events. For 68/74 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 19 event pairs, 1 based on Foata normal form. 1/21 useless extension candidates. Maximal degree in co-relation 75. Up to 10 conditions per place. [2021-03-25 04:57:51,136 INFO L142 LiptonReduction]: Number of co-enabled transitions 16 [2021-03-25 04:57:51,231 INFO L154 LiptonReduction]: Checked pairs total: 2 [2021-03-25 04:57:51,232 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 04:57:51,232 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 99 [2021-03-25 04:57:51,232 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 15 transitions, 108 flow [2021-03-25 04:57:51,233 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:51,233 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:57:51,233 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:57:51,233 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-25 04:57:51,233 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:57:51,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:57:51,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1906639282, now seen corresponding path program 1 times [2021-03-25 04:57:51,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:57:51,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305241815] [2021-03-25 04:57:51,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:57:51,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:57:51,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:57:51,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:57:51,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:57:51,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:57:51,262 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-25 04:57:51,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-25 04:57:51,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:57:51,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:57:51,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 04:57:51,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305241815] [2021-03-25 04:57:51,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:57:51,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 04:57:51,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808442367] [2021-03-25 04:57:51,270 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 04:57:51,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:57:51,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 04:57:51,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 04:57:51,271 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 123 [2021-03-25 04:57:51,272 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 15 transitions, 108 flow. Second operand has 6 states, 6 states have (on average 92.83333333333333) internal successors, (557), 6 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:51,272 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:57:51,272 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 123 [2021-03-25 04:57:51,272 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:57:51,287 INFO L129 PetriNetUnfolder]: 1/17 cut-off events. [2021-03-25 04:57:51,287 INFO L130 PetriNetUnfolder]: For 55/60 co-relation queries the response was YES. [2021-03-25 04:57:51,287 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 17 events. 1/17 cut-off events. For 55/60 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 20 event pairs, 0 based on Foata normal form. 2/18 useless extension candidates. Maximal degree in co-relation 63. Up to 7 conditions per place. [2021-03-25 04:57:51,287 INFO L132 encePairwiseOnDemand]: 116/123 looper letters, 0 selfloop transitions, 0 changer transitions 14/14 dead transitions. [2021-03-25 04:57:51,287 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 14 transitions, 102 flow [2021-03-25 04:57:51,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 04:57:51,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 04:57:51,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 467 transitions. [2021-03-25 04:57:51,288 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.759349593495935 [2021-03-25 04:57:51,288 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 467 transitions. [2021-03-25 04:57:51,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 467 transitions. [2021-03-25 04:57:51,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:57:51,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 467 transitions. [2021-03-25 04:57:51,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.4) internal successors, (467), 5 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:51,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 123.0) internal successors, (738), 6 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:51,291 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 123.0) internal successors, (738), 6 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:51,291 INFO L185 Difference]: Start difference. First operand has 34 places, 15 transitions, 108 flow. Second operand 5 states and 467 transitions. [2021-03-25 04:57:51,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 14 transitions, 102 flow [2021-03-25 04:57:51,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 14 transitions, 77 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-03-25 04:57:51,292 INFO L241 Difference]: Finished difference. Result has 31 places, 0 transitions, 0 flow [2021-03-25 04:57:51,292 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=31, PETRI_TRANSITIONS=0} [2021-03-25 04:57:51,292 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, -1 predicate places. [2021-03-25 04:57:51,292 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:57:51,292 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 0 transitions, 0 flow [2021-03-25 04:57:51,292 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 31 places, 0 transitions, 0 flow [2021-03-25 04:57:51,292 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 04:57:51,293 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 04:57:51,293 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 04:57:51,293 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-25 04:57:51,293 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 04:57:51,293 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 04:57:51,293 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 04:57:51,293 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 04:57:51,293 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 04:57:51,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 92.83333333333333) internal successors, (557), 6 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:57:51,294 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-25 04:57:51,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 04:57:51 BasicIcfg [2021-03-25 04:57:51,296 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 04:57:51,297 INFO L168 Benchmark]: Toolchain (without parser) took 3752.84 ms. Allocated memory was 337.6 MB in the beginning and 411.0 MB in the end (delta: 73.4 MB). Free memory was 301.2 MB in the beginning and 344.4 MB in the end (delta: -43.2 MB). Peak memory consumption was 32.6 MB. Max. memory is 16.0 GB. [2021-03-25 04:57:51,297 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 337.6 MB. Free memory is still 318.9 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 04:57:51,297 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.95 ms. Allocated memory is still 337.6 MB. Free memory was 301.0 MB in the beginning and 301.9 MB in the end (delta: -835.9 kB). Peak memory consumption was 8.9 MB. Max. memory is 16.0 GB. [2021-03-25 04:57:51,297 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.71 ms. Allocated memory is still 337.6 MB. Free memory was 301.9 MB in the beginning and 299.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 04:57:51,297 INFO L168 Benchmark]: Boogie Preprocessor took 25.41 ms. Allocated memory is still 337.6 MB. Free memory was 299.8 MB in the beginning and 298.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 04:57:51,297 INFO L168 Benchmark]: RCFGBuilder took 305.24 ms. Allocated memory is still 337.6 MB. Free memory was 298.7 MB in the beginning and 275.6 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-25 04:57:51,298 INFO L168 Benchmark]: TraceAbstraction took 3038.98 ms. Allocated memory was 337.6 MB in the beginning and 411.0 MB in the end (delta: 73.4 MB). Free memory was 275.6 MB in the beginning and 344.4 MB in the end (delta: -68.7 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.0 GB. [2021-03-25 04:57:51,301 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 337.6 MB. Free memory is still 318.9 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 341.95 ms. Allocated memory is still 337.6 MB. Free memory was 301.0 MB in the beginning and 301.9 MB in the end (delta: -835.9 kB). Peak memory consumption was 8.9 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 37.71 ms. Allocated memory is still 337.6 MB. Free memory was 301.9 MB in the beginning and 299.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 25.41 ms. Allocated memory is still 337.6 MB. Free memory was 299.8 MB in the beginning and 298.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 305.24 ms. Allocated memory is still 337.6 MB. Free memory was 298.7 MB in the beginning and 275.6 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3038.98 ms. Allocated memory was 337.6 MB in the beginning and 411.0 MB in the end (delta: 73.4 MB). Free memory was 275.6 MB in the beginning and 344.4 MB in the end (delta: -68.7 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 980.1ms, 68 PlacesBefore, 32 PlacesAfterwards, 59 TransitionsBefore, 22 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 4 FixpointIterations, 14 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 37 TotalNumberOfCompositions, 996 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 492, positive: 459, positive conditional: 0, positive unconditional: 459, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 383, positive: 366, positive conditional: 0, positive unconditional: 366, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 383, positive: 366, positive conditional: 0, positive unconditional: 366, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 492, positive: 93, positive conditional: 0, positive unconditional: 93, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 383, unknown conditional: 0, unknown unconditional: 383] , Statistics on independence cache: Total cache size (in pairs): 24, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 597.6ms, 32 PlacesBefore, 27 PlacesAfterwards, 24 TransitionsBefore, 19 TransitionsAfterwards, 188 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 371 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 129, positive: 97, positive conditional: 0, positive unconditional: 97, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 32, positive: 25, positive conditional: 0, positive unconditional: 25, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 32, positive: 25, positive conditional: 0, positive unconditional: 25, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 129, positive: 72, positive conditional: 0, positive unconditional: 72, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 32, unknown conditional: 0, unknown unconditional: 32] , Statistics on independence cache: Total cache size (in pairs): 34, Positive cache size: 25, Positive conditional cache size: 0, Positive unconditional cache size: 25, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.9ms, 32 PlacesBefore, 32 PlacesAfterwards, 28 TransitionsBefore, 28 TransitionsAfterwards, 176 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 72 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 34, positive: 29, positive conditional: 0, positive unconditional: 29, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 34, positive: 27, positive conditional: 0, positive unconditional: 27, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 37, Positive cache size: 27, Positive conditional cache size: 0, Positive unconditional cache size: 27, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 16.1ms, 35 PlacesBefore, 35 PlacesAfterwards, 28 TransitionsBefore, 28 TransitionsAfterwards, 176 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 86 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 55, positive: 49, positive conditional: 0, positive unconditional: 49, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 55, positive: 46, positive conditional: 0, positive unconditional: 46, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 40, Positive cache size: 30, Positive conditional cache size: 0, Positive unconditional cache size: 30, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 24.5ms, 37 PlacesBefore, 37 PlacesAfterwards, 23 TransitionsBefore, 23 TransitionsAfterwards, 128 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 69 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 27, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 27, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 37, Positive cache size: 29, Positive conditional cache size: 0, Positive unconditional cache size: 29, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.3ms, 35 PlacesBefore, 35 PlacesAfterwards, 23 TransitionsBefore, 23 TransitionsAfterwards, 128 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 56 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 19, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 19, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 37, Positive cache size: 29, Positive conditional cache size: 0, Positive unconditional cache size: 29, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.8ms, 39 PlacesBefore, 39 PlacesAfterwards, 28 TransitionsBefore, 28 TransitionsAfterwards, 150 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 116 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 46, positive: 37, positive conditional: 0, positive unconditional: 37, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 5, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 46, positive: 32, positive conditional: 0, positive unconditional: 32, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 5, unknown conditional: 0, unknown unconditional: 5] , Statistics on independence cache: Total cache size (in pairs): 42, Positive cache size: 34, Positive conditional cache size: 0, Positive unconditional cache size: 34, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 23.7ms, 44 PlacesBefore, 43 PlacesAfterwards, 23 TransitionsBefore, 22 TransitionsAfterwards, 94 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 132 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 49, positive: 34, positive conditional: 0, positive unconditional: 34, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 49, positive: 32, positive conditional: 0, positive unconditional: 32, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 35, Positive cache size: 29, Positive conditional cache size: 0, Positive unconditional cache size: 29, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 45.0ms, 42 PlacesBefore, 38 PlacesAfterwards, 16 TransitionsBefore, 14 TransitionsAfterwards, 46 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 42 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 12, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 12, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 15, Positive conditional cache size: 0, Positive unconditional cache size: 15, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 36.7ms, 33 PlacesBefore, 31 PlacesAfterwards, 16 TransitionsBefore, 16 TransitionsAfterwards, 22 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 4 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 15, Positive cache size: 11, Positive conditional cache size: 0, Positive unconditional cache size: 11, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 98.3ms, 37 PlacesBefore, 34 PlacesAfterwards, 16 TransitionsBefore, 15 TransitionsAfterwards, 16 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 2 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 4, Positive cache size: 4, Positive conditional cache size: 0, Positive unconditional cache size: 4, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.5ms, 31 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 4, Positive cache size: 4, Positive conditional cache size: 0, Positive unconditional cache size: 4, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2976.6ms, OverallIterations: 11, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 366.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1066.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 49 SDtfs, 28 SDslu, 22 SDs, 0 SdLazy, 131 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 94.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 84.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=194occurred in iteration=6, InterpolantAutomatonStates: 47, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 21.8ms SsaConstructionTime, 134.0ms SatisfiabilityAnalysisTime, 353.1ms InterpolantComputationTime, 137 NumberOfCodeBlocks, 137 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 126 ConstructedInterpolants, 0 QuantifiedInterpolants, 412 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...