/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/thin002_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 05:13:56,563 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 05:13:56,565 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 05:13:56,602 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 05:13:56,603 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 05:13:56,605 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 05:13:56,608 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 05:13:56,613 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 05:13:56,615 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 05:13:56,619 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 05:13:56,620 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 05:13:56,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 05:13:56,621 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 05:13:56,623 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 05:13:56,624 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 05:13:56,626 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 05:13:56,628 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 05:13:56,629 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 05:13:56,631 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 05:13:56,638 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 05:13:56,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 05:13:56,641 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 05:13:56,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 05:13:56,643 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 05:13:56,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-25 05:13:56,649 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-25 05:13:56,649 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-25 05:13:56,651 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-25 05:13:56,651 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-25 05:13:56,652 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-25 05:13:56,652 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 05:13:56,653 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 05:13:56,654 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 05:13:56,655 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 05:13:56,655 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 05:13:56,656 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 05:13:56,656 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 05:13:56,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 05:13:56,656 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 05:13:56,657 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 05:13:56,658 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 05:13:56,661 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 05:13:56,696 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 05:13:56,696 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 05:13:56,699 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 05:13:56,699 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 05:13:56,700 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 05:13:56,700 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 05:13:56,700 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 05:13:56,700 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 05:13:56,700 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 05:13:56,701 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 05:13:56,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 05:13:56,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 05:13:56,702 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 05:13:56,702 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 05:13:56,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 05:13:56,702 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 05:13:56,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 05:13:56,702 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 05:13:56,703 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 05:13:56,703 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 05:13:56,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 05:13:56,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 05:13:56,704 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 05:13:56,704 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 05:13:56,704 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 05:13:56,704 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 05:13:56,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 05:13:56,704 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 05:13:56,704 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 05:13:56,705 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 05:13:56,705 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 05:13:57,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 05:13:57,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 05:13:57,027 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 05:13:57,028 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 05:13:57,029 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 05:13:57,029 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_tso.opt.i [2021-03-25 05:13:57,091 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a4d3dce7/e5b68b58bd0948e3bf65c6bbc0430c87/FLAG378126f99 [2021-03-25 05:13:57,599 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 05:13:57,600 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_tso.opt.i [2021-03-25 05:13:57,616 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a4d3dce7/e5b68b58bd0948e3bf65c6bbc0430c87/FLAG378126f99 [2021-03-25 05:13:58,107 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a4d3dce7/e5b68b58bd0948e3bf65c6bbc0430c87 [2021-03-25 05:13:58,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 05:13:58,111 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 05:13:58,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 05:13:58,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 05:13:58,116 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 05:13:58,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:13:58" (1/1) ... [2021-03-25 05:13:58,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27e37c7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:13:58, skipping insertion in model container [2021-03-25 05:13:58,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:13:58" (1/1) ... [2021-03-25 05:13:58,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 05:13:58,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 05:13:58,284 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/thin002_tso.opt.i[949,962] [2021-03-25 05:13:58,491 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:13:58,498 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 05:13:58,510 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/thin002_tso.opt.i[949,962] [2021-03-25 05:13:58,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:13:58,621 INFO L208 MainTranslator]: Completed translation [2021-03-25 05:13:58,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:13:58 WrapperNode [2021-03-25 05:13:58,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 05:13:58,623 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 05:13:58,623 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 05:13:58,623 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 05:13:58,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:13:58" (1/1) ... [2021-03-25 05:13:58,658 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:13:58" (1/1) ... [2021-03-25 05:13:58,677 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 05:13:58,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 05:13:58,678 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 05:13:58,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 05:13:58,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:13:58" (1/1) ... [2021-03-25 05:13:58,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:13:58" (1/1) ... [2021-03-25 05:13:58,689 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:13:58" (1/1) ... [2021-03-25 05:13:58,690 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:13:58" (1/1) ... [2021-03-25 05:13:58,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:13:58" (1/1) ... [2021-03-25 05:13:58,701 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:13:58" (1/1) ... [2021-03-25 05:13:58,702 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:13:58" (1/1) ... [2021-03-25 05:13:58,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 05:13:58,705 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 05:13:58,705 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 05:13:58,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 05:13:58,706 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:13:58" (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 05:13:58,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 05:13:58,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 05:13:58,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 05:13:58,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 05:13:58,779 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-25 05:13:58,779 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-25 05:13:58,780 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-25 05:13:58,780 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-25 05:13:58,780 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-25 05:13:58,780 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-25 05:13:58,780 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-03-25 05:13:58,780 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-03-25 05:13:58,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 05:13:58,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 05:13:58,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 05:13:58,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 05:13:58,782 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 05:13:59,079 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 05:13:59,079 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-25 05:13:59,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:13:59 BoogieIcfgContainer [2021-03-25 05:13:59,081 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 05:13:59,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 05:13:59,082 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 05:13:59,084 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 05:13:59,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 05:13:58" (1/3) ... [2021-03-25 05:13:59,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dcdcc7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:13:59, skipping insertion in model container [2021-03-25 05:13:59,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:13:58" (2/3) ... [2021-03-25 05:13:59,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dcdcc7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:13:59, skipping insertion in model container [2021-03-25 05:13:59,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:13:59" (3/3) ... [2021-03-25 05:13:59,086 INFO L111 eAbstractionObserver]: Analyzing ICFG thin002_tso.opt.i [2021-03-25 05:13:59,090 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 05:13:59,093 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 05:13:59,094 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 05:13:59,124 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,124 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,125 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,125 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,125 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,125 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,125 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,125 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,126 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,126 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,126 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,126 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,127 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,127 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,127 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,127 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,127 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,127 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,128 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,128 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,128 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,128 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,128 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,128 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,129 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,129 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,129 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,129 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,129 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,129 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,129 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,129 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,130 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,130 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,130 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,130 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,130 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,131 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,131 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,131 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,131 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,131 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,131 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,131 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,132 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,132 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,132 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,132 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,134 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,134 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,134 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,134 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,138 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,138 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,138 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,138 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,140 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,140 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,140 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,140 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,142 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,142 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,142 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,142 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:13:59,143 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 05:13:59,157 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-25 05:13:59,180 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 05:13:59,180 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 05:13:59,180 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 05:13:59,181 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 05:13:59,181 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 05:13:59,181 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 05:13:59,181 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 05:13:59,182 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 05:13:59,194 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 102 places, 91 transitions, 202 flow [2021-03-25 05:13:59,240 INFO L129 PetriNetUnfolder]: 2/87 cut-off events. [2021-03-25 05:13:59,240 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:13:59,243 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 87 events. 2/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2021-03-25 05:13:59,243 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 91 transitions, 202 flow [2021-03-25 05:13:59,247 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 73 transitions, 158 flow [2021-03-25 05:13:59,248 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:13:59,256 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 73 transitions, 158 flow [2021-03-25 05:13:59,258 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 73 transitions, 158 flow [2021-03-25 05:13:59,260 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 73 transitions, 158 flow [2021-03-25 05:13:59,283 INFO L129 PetriNetUnfolder]: 1/73 cut-off events. [2021-03-25 05:13:59,283 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:13:59,284 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 73 events. 1/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-25 05:13:59,286 INFO L142 LiptonReduction]: Number of co-enabled transitions 1392 [2021-03-25 05:14:00,627 INFO L154 LiptonReduction]: Checked pairs total: 1938 [2021-03-25 05:14:00,627 INFO L156 LiptonReduction]: Total number of compositions: 46 [2021-03-25 05:14:00,629 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1382 [2021-03-25 05:14:00,638 INFO L129 PetriNetUnfolder]: 0/25 cut-off events. [2021-03-25 05:14:00,638 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:14:00,638 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:14:00,639 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:14:00,639 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:14:00,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:14:00,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1692446056, now seen corresponding path program 1 times [2021-03-25 05:14:00,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:14:00,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728095641] [2021-03-25 05:14:00,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:14:00,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:14:00,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:14:00,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:14:00,913 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 05:14:00,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 05:14:00,926 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 05:14:00,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728095641] [2021-03-25 05:14:00,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:14:00,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:14:00,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230125541] [2021-03-25 05:14:00,935 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 05:14:00,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:14:00,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 05:14:00,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 05:14:00,949 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 137 [2021-03-25 05:14:00,953 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 27 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:00,953 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:14:00,953 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 137 [2021-03-25 05:14:00,954 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:14:01,019 INFO L129 PetriNetUnfolder]: 45/141 cut-off events. [2021-03-25 05:14:01,020 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:14:01,021 INFO L84 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 141 events. 45/141 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 606 event pairs, 23 based on Foata normal form. 1/125 useless extension candidates. Maximal degree in co-relation 216. Up to 76 conditions per place. [2021-03-25 05:14:01,022 INFO L132 encePairwiseOnDemand]: 131/137 looper letters, 6 selfloop transitions, 5 changer transitions 0/31 dead transitions. [2021-03-25 05:14:01,022 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 31 transitions, 96 flow [2021-03-25 05:14:01,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:14:01,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:14:01,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 348 transitions. [2021-03-25 05:14:01,045 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8467153284671532 [2021-03-25 05:14:01,046 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 348 transitions. [2021-03-25 05:14:01,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 348 transitions. [2021-03-25 05:14:01,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:14:01,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 348 transitions. [2021-03-25 05:14:01,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:01,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:01,072 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:01,073 INFO L185 Difference]: Start difference. First operand has 40 places, 27 transitions, 66 flow. Second operand 3 states and 348 transitions. [2021-03-25 05:14:01,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 31 transitions, 96 flow [2021-03-25 05:14:01,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 31 transitions, 92 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-25 05:14:01,077 INFO L241 Difference]: Finished difference. Result has 39 places, 31 transitions, 95 flow [2021-03-25 05:14:01,078 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2021-03-25 05:14:01,079 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, -1 predicate places. [2021-03-25 05:14:01,079 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:14:01,079 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 31 transitions, 95 flow [2021-03-25 05:14:01,096 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 31 transitions, 95 flow [2021-03-25 05:14:01,096 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 39 places, 31 transitions, 95 flow [2021-03-25 05:14:01,111 INFO L129 PetriNetUnfolder]: 45/141 cut-off events. [2021-03-25 05:14:01,111 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 05:14:01,112 INFO L84 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 141 events. 45/141 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 588 event pairs, 23 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 220. Up to 76 conditions per place. [2021-03-25 05:14:01,113 INFO L142 LiptonReduction]: Number of co-enabled transitions 268 [2021-03-25 05:14:01,614 INFO L154 LiptonReduction]: Checked pairs total: 480 [2021-03-25 05:14:01,614 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-25 05:14:01,615 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 536 [2021-03-25 05:14:01,617 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 87 flow [2021-03-25 05:14:01,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:01,617 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:14:01,617 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:14:01,617 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 05:14:01,617 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:14:01,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:14:01,618 INFO L82 PathProgramCache]: Analyzing trace with hash 2088650593, now seen corresponding path program 1 times [2021-03-25 05:14:01,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:14:01,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710099223] [2021-03-25 05:14:01,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:14:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:14:01,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:14:01,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:14:01,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:14:01,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:14:01,717 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 05:14:01,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 05:14:01,727 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 05:14:01,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710099223] [2021-03-25 05:14:01,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:14:01,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:14:01,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386536580] [2021-03-25 05:14:01,733 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:14:01,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:14:01,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:14:01,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:14:01,738 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 141 [2021-03-25 05:14:01,740 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 87 flow. Second operand has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:01,740 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:14:01,740 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 141 [2021-03-25 05:14:01,740 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:14:01,778 INFO L129 PetriNetUnfolder]: 29/94 cut-off events. [2021-03-25 05:14:01,778 INFO L130 PetriNetUnfolder]: For 22/142 co-relation queries the response was YES. [2021-03-25 05:14:01,780 INFO L84 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 94 events. 29/94 cut-off events. For 22/142 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 351 event pairs, 2 based on Foata normal form. 5/90 useless extension candidates. Maximal degree in co-relation 205. Up to 53 conditions per place. [2021-03-25 05:14:01,781 INFO L132 encePairwiseOnDemand]: 138/141 looper letters, 11 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2021-03-25 05:14:01,782 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 30 transitions, 127 flow [2021-03-25 05:14:01,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:14:01,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:14:01,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 350 transitions. [2021-03-25 05:14:01,789 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274231678486997 [2021-03-25 05:14:01,789 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 350 transitions. [2021-03-25 05:14:01,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 350 transitions. [2021-03-25 05:14:01,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:14:01,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 350 transitions. [2021-03-25 05:14:01,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:01,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:01,797 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:01,797 INFO L185 Difference]: Start difference. First operand has 35 places, 27 transitions, 87 flow. Second operand 3 states and 350 transitions. [2021-03-25 05:14:01,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 30 transitions, 127 flow [2021-03-25 05:14:01,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 30 transitions, 122 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 05:14:01,799 INFO L241 Difference]: Finished difference. Result has 37 places, 27 transitions, 93 flow [2021-03-25 05:14:01,799 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=93, PETRI_PLACES=37, PETRI_TRANSITIONS=27} [2021-03-25 05:14:01,800 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, -3 predicate places. [2021-03-25 05:14:01,800 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:14:01,800 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 27 transitions, 93 flow [2021-03-25 05:14:01,800 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 27 transitions, 93 flow [2021-03-25 05:14:01,801 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 27 transitions, 93 flow [2021-03-25 05:14:01,810 INFO L129 PetriNetUnfolder]: 29/106 cut-off events. [2021-03-25 05:14:01,811 INFO L130 PetriNetUnfolder]: For 16/19 co-relation queries the response was YES. [2021-03-25 05:14:01,811 INFO L84 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 106 events. 29/106 cut-off events. For 16/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 442 event pairs, 18 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 185. Up to 53 conditions per place. [2021-03-25 05:14:01,813 INFO L142 LiptonReduction]: Number of co-enabled transitions 236 [2021-03-25 05:14:01,997 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2021-03-25 05:14:02,230 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2021-03-25 05:14:02,326 INFO L154 LiptonReduction]: Checked pairs total: 308 [2021-03-25 05:14:02,327 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 05:14:02,327 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 527 [2021-03-25 05:14:02,327 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 91 flow [2021-03-25 05:14:02,328 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:02,328 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:14:02,328 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:14:02,328 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 05:14:02,328 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:14:02,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:14:02,329 INFO L82 PathProgramCache]: Analyzing trace with hash -307360235, now seen corresponding path program 1 times [2021-03-25 05:14:02,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:14:02,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254857713] [2021-03-25 05:14:02,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:14:02,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:14:02,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:14:02,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:14:02,376 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 05:14:02,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 05:14:02,385 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 05:14:02,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254857713] [2021-03-25 05:14:02,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:14:02,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:14:02,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537420582] [2021-03-25 05:14:02,387 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:14:02,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:14:02,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:14:02,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:14:02,389 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 142 [2021-03-25 05:14:02,390 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 91 flow. Second operand has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:02,390 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:14:02,390 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 142 [2021-03-25 05:14:02,390 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:14:02,414 INFO L129 PetriNetUnfolder]: 21/81 cut-off events. [2021-03-25 05:14:02,414 INFO L130 PetriNetUnfolder]: For 43/183 co-relation queries the response was YES. [2021-03-25 05:14:02,414 INFO L84 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 81 events. 21/81 cut-off events. For 43/183 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 300 event pairs, 10 based on Foata normal form. 7/82 useless extension candidates. Maximal degree in co-relation 185. Up to 41 conditions per place. [2021-03-25 05:14:02,415 INFO L132 encePairwiseOnDemand]: 139/142 looper letters, 10 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2021-03-25 05:14:02,415 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 29 transitions, 132 flow [2021-03-25 05:14:02,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:14:02,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:14:02,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 349 transitions. [2021-03-25 05:14:02,417 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8192488262910798 [2021-03-25 05:14:02,417 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 349 transitions. [2021-03-25 05:14:02,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 349 transitions. [2021-03-25 05:14:02,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:14:02,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 349 transitions. [2021-03-25 05:14:02,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:02,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:02,420 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:02,420 INFO L185 Difference]: Start difference. First operand has 36 places, 26 transitions, 91 flow. Second operand 3 states and 349 transitions. [2021-03-25 05:14:02,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 29 transitions, 132 flow [2021-03-25 05:14:02,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 29 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 05:14:02,421 INFO L241 Difference]: Finished difference. Result has 37 places, 26 transitions, 96 flow [2021-03-25 05:14:02,422 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=37, PETRI_TRANSITIONS=26} [2021-03-25 05:14:02,422 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, -3 predicate places. [2021-03-25 05:14:02,422 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:14:02,422 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 26 transitions, 96 flow [2021-03-25 05:14:02,422 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 26 transitions, 96 flow [2021-03-25 05:14:02,423 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 26 transitions, 96 flow [2021-03-25 05:14:02,429 INFO L129 PetriNetUnfolder]: 21/83 cut-off events. [2021-03-25 05:14:02,429 INFO L130 PetriNetUnfolder]: For 20/37 co-relation queries the response was YES. [2021-03-25 05:14:02,430 INFO L84 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 83 events. 21/83 cut-off events. For 20/37 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 324 event pairs, 10 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 159. Up to 41 conditions per place. [2021-03-25 05:14:02,431 INFO L142 LiptonReduction]: Number of co-enabled transitions 236 [2021-03-25 05:14:02,433 INFO L154 LiptonReduction]: Checked pairs total: 149 [2021-03-25 05:14:02,433 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:14:02,433 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11 [2021-03-25 05:14:02,435 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 26 transitions, 96 flow [2021-03-25 05:14:02,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:02,435 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:14:02,435 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:14:02,435 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 05:14:02,436 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:14:02,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:14:02,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1081241178, now seen corresponding path program 1 times [2021-03-25 05:14:02,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:14:02,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974218364] [2021-03-25 05:14:02,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:14:02,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:14:02,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:14:02,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:14:02,495 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 05:14:02,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 05:14:02,504 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 05:14:02,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974218364] [2021-03-25 05:14:02,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:14:02,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:14:02,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541495672] [2021-03-25 05:14:02,505 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:14:02,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:14:02,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:14:02,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:14:02,507 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 142 [2021-03-25 05:14:02,507 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 26 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:02,507 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:14:02,507 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 142 [2021-03-25 05:14:02,508 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:14:02,545 INFO L129 PetriNetUnfolder]: 42/140 cut-off events. [2021-03-25 05:14:02,546 INFO L130 PetriNetUnfolder]: For 114/413 co-relation queries the response was YES. [2021-03-25 05:14:02,546 INFO L84 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 140 events. 42/140 cut-off events. For 114/413 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 679 event pairs, 5 based on Foata normal form. 13/145 useless extension candidates. Maximal degree in co-relation 352. Up to 69 conditions per place. [2021-03-25 05:14:02,547 INFO L132 encePairwiseOnDemand]: 135/142 looper letters, 9 selfloop transitions, 12 changer transitions 0/36 dead transitions. [2021-03-25 05:14:02,547 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 36 transitions, 190 flow [2021-03-25 05:14:02,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:14:02,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:14:02,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 560 transitions. [2021-03-25 05:14:02,549 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7887323943661971 [2021-03-25 05:14:02,549 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 560 transitions. [2021-03-25 05:14:02,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 560 transitions. [2021-03-25 05:14:02,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:14:02,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 560 transitions. [2021-03-25 05:14:02,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:02,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:02,553 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:02,553 INFO L185 Difference]: Start difference. First operand has 37 places, 26 transitions, 96 flow. Second operand 5 states and 560 transitions. [2021-03-25 05:14:02,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 36 transitions, 190 flow [2021-03-25 05:14:02,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 36 transitions, 178 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 05:14:02,555 INFO L241 Difference]: Finished difference. Result has 42 places, 33 transitions, 179 flow [2021-03-25 05:14:02,555 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=179, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2021-03-25 05:14:02,555 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 2 predicate places. [2021-03-25 05:14:02,555 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:14:02,555 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 42 places, 33 transitions, 179 flow [2021-03-25 05:14:02,555 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 42 places, 33 transitions, 179 flow [2021-03-25 05:14:02,556 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 42 places, 33 transitions, 179 flow [2021-03-25 05:14:02,565 INFO L129 PetriNetUnfolder]: 35/134 cut-off events. [2021-03-25 05:14:02,565 INFO L130 PetriNetUnfolder]: For 106/184 co-relation queries the response was YES. [2021-03-25 05:14:02,566 INFO L84 FinitePrefix]: Finished finitePrefix Result has 385 conditions, 134 events. 35/134 cut-off events. For 106/184 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 689 event pairs, 7 based on Foata normal form. 1/130 useless extension candidates. Maximal degree in co-relation 371. Up to 65 conditions per place. [2021-03-25 05:14:02,567 INFO L142 LiptonReduction]: Number of co-enabled transitions 336 [2021-03-25 05:14:02,570 INFO L154 LiptonReduction]: Checked pairs total: 202 [2021-03-25 05:14:02,570 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:14:02,570 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 15 [2021-03-25 05:14:02,571 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 179 flow [2021-03-25 05:14:02,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:02,571 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:14:02,571 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:14:02,572 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 05:14:02,572 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:14:02,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:14:02,573 INFO L82 PathProgramCache]: Analyzing trace with hash -164547976, now seen corresponding path program 2 times [2021-03-25 05:14:02,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:14:02,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499955790] [2021-03-25 05:14:02,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:14:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:14:02,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:14:02,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:14:02,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:14:02,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:14:02,620 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 05:14:02,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 05:14:02,629 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 05:14:02,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499955790] [2021-03-25 05:14:02,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:14:02,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:14:02,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237629970] [2021-03-25 05:14:02,630 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:14:02,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:14:02,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:14:02,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:14:02,631 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 142 [2021-03-25 05:14:02,632 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 108.8) internal successors, (544), 5 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:02,632 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:14:02,632 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 142 [2021-03-25 05:14:02,632 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:14:02,659 INFO L129 PetriNetUnfolder]: 36/139 cut-off events. [2021-03-25 05:14:02,659 INFO L130 PetriNetUnfolder]: For 316/810 co-relation queries the response was YES. [2021-03-25 05:14:02,659 INFO L84 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 139 events. 36/139 cut-off events. For 316/810 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 715 event pairs, 2 based on Foata normal form. 13/145 useless extension candidates. Maximal degree in co-relation 458. Up to 65 conditions per place. [2021-03-25 05:14:02,660 INFO L132 encePairwiseOnDemand]: 138/142 looper letters, 11 selfloop transitions, 3 changer transitions 8/37 dead transitions. [2021-03-25 05:14:02,660 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 37 transitions, 257 flow [2021-03-25 05:14:02,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:14:02,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:14:02,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 446 transitions. [2021-03-25 05:14:02,661 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7852112676056338 [2021-03-25 05:14:02,662 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 446 transitions. [2021-03-25 05:14:02,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 446 transitions. [2021-03-25 05:14:02,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:14:02,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 446 transitions. [2021-03-25 05:14:02,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 111.5) internal successors, (446), 4 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:02,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:02,664 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:02,664 INFO L185 Difference]: Start difference. First operand has 42 places, 33 transitions, 179 flow. Second operand 4 states and 446 transitions. [2021-03-25 05:14:02,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 37 transitions, 257 flow [2021-03-25 05:14:02,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 37 transitions, 249 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-03-25 05:14:02,667 INFO L241 Difference]: Finished difference. Result has 46 places, 25 transitions, 131 flow [2021-03-25 05:14:02,667 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=131, PETRI_PLACES=46, PETRI_TRANSITIONS=25} [2021-03-25 05:14:02,667 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 6 predicate places. [2021-03-25 05:14:02,667 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:14:02,667 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 25 transitions, 131 flow [2021-03-25 05:14:02,668 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 46 places, 25 transitions, 131 flow [2021-03-25 05:14:02,668 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 45 places, 25 transitions, 131 flow [2021-03-25 05:14:02,672 INFO L129 PetriNetUnfolder]: 10/54 cut-off events. [2021-03-25 05:14:02,672 INFO L130 PetriNetUnfolder]: For 55/68 co-relation queries the response was YES. [2021-03-25 05:14:02,672 INFO L84 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 54 events. 10/54 cut-off events. For 55/68 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 177 event pairs, 6 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 149. Up to 24 conditions per place. [2021-03-25 05:14:02,673 INFO L142 LiptonReduction]: Number of co-enabled transitions 218 [2021-03-25 05:14:02,724 INFO L154 LiptonReduction]: Checked pairs total: 225 [2021-03-25 05:14:02,724 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 05:14:02,724 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 57 [2021-03-25 05:14:02,725 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 24 transitions, 133 flow [2021-03-25 05:14:02,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 108.8) internal successors, (544), 5 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:02,725 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:14:02,725 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:14:02,725 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 05:14:02,725 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:14:02,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:14:02,726 INFO L82 PathProgramCache]: Analyzing trace with hash -525910890, now seen corresponding path program 1 times [2021-03-25 05:14:02,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:14:02,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656683049] [2021-03-25 05:14:02,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:14:02,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:14:02,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:14:02,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:14:02,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:14:02,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:14:02,782 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 05:14:02,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 05:14:02,794 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 05:14:02,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656683049] [2021-03-25 05:14:02,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:14:02,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:14:02,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812462120] [2021-03-25 05:14:02,795 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:14:02,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:14:02,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:14:02,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:14:02,798 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 144 [2021-03-25 05:14:02,799 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 24 transitions, 133 flow. Second operand has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:02,799 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:14:02,799 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 144 [2021-03-25 05:14:02,799 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:14:02,834 INFO L129 PetriNetUnfolder]: 17/80 cut-off events. [2021-03-25 05:14:02,834 INFO L130 PetriNetUnfolder]: For 273/443 co-relation queries the response was YES. [2021-03-25 05:14:02,835 INFO L84 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 80 events. 17/80 cut-off events. For 273/443 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 337 event pairs, 2 based on Foata normal form. 9/84 useless extension candidates. Maximal degree in co-relation 268. Up to 35 conditions per place. [2021-03-25 05:14:02,835 INFO L132 encePairwiseOnDemand]: 140/144 looper letters, 8 selfloop transitions, 3 changer transitions 4/29 dead transitions. [2021-03-25 05:14:02,835 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 29 transitions, 211 flow [2021-03-25 05:14:02,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:14:02,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:14:02,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 447 transitions. [2021-03-25 05:14:02,837 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7760416666666666 [2021-03-25 05:14:02,837 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 447 transitions. [2021-03-25 05:14:02,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 447 transitions. [2021-03-25 05:14:02,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:14:02,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 447 transitions. [2021-03-25 05:14:02,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 111.75) internal successors, (447), 4 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:02,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:02,839 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:02,839 INFO L185 Difference]: Start difference. First operand has 44 places, 24 transitions, 133 flow. Second operand 4 states and 447 transitions. [2021-03-25 05:14:02,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 29 transitions, 211 flow [2021-03-25 05:14:02,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 29 transitions, 145 flow, removed 18 selfloop flow, removed 8 redundant places. [2021-03-25 05:14:02,843 INFO L241 Difference]: Finished difference. Result has 41 places, 23 transitions, 98 flow [2021-03-25 05:14:02,843 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=98, PETRI_PLACES=41, PETRI_TRANSITIONS=23} [2021-03-25 05:14:02,843 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2021-03-25 05:14:02,843 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:14:02,844 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 23 transitions, 98 flow [2021-03-25 05:14:02,844 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 41 places, 23 transitions, 98 flow [2021-03-25 05:14:02,844 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 41 places, 23 transitions, 98 flow [2021-03-25 05:14:02,850 INFO L129 PetriNetUnfolder]: 4/34 cut-off events. [2021-03-25 05:14:02,850 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2021-03-25 05:14:02,850 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 34 events. 4/34 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 74 event pairs, 3 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 73. Up to 14 conditions per place. [2021-03-25 05:14:02,851 INFO L142 LiptonReduction]: Number of co-enabled transitions 160 [2021-03-25 05:14:02,905 INFO L154 LiptonReduction]: Checked pairs total: 145 [2021-03-25 05:14:02,905 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 05:14:02,905 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 62 [2021-03-25 05:14:02,906 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 22 transitions, 100 flow [2021-03-25 05:14:02,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:02,907 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:14:02,907 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:14:02,907 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 05:14:02,907 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:14:02,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:14:02,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1112782700, now seen corresponding path program 1 times [2021-03-25 05:14:02,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:14:02,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558143471] [2021-03-25 05:14:02,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:14:02,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:14:02,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:14:02,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:14:02,962 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 05:14:02,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 05:14:02,970 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 05:14:02,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558143471] [2021-03-25 05:14:02,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:14:02,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:14:02,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914708986] [2021-03-25 05:14:02,972 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:14:02,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:14:02,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:14:02,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:14:02,973 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 146 [2021-03-25 05:14:02,975 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 22 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 114.25) internal successors, (457), 4 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:02,975 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:14:02,975 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 146 [2021-03-25 05:14:02,975 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:14:02,995 INFO L129 PetriNetUnfolder]: 3/32 cut-off events. [2021-03-25 05:14:02,996 INFO L130 PetriNetUnfolder]: For 68/102 co-relation queries the response was YES. [2021-03-25 05:14:02,996 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 32 events. 3/32 cut-off events. For 68/102 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 63 event pairs, 0 based on Foata normal form. 2/33 useless extension candidates. Maximal degree in co-relation 78. Up to 12 conditions per place. [2021-03-25 05:14:02,996 INFO L132 encePairwiseOnDemand]: 143/146 looper letters, 7 selfloop transitions, 3 changer transitions 0/24 dead transitions. [2021-03-25 05:14:02,996 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 24 transitions, 135 flow [2021-03-25 05:14:02,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:14:02,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:14:02,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 349 transitions. [2021-03-25 05:14:02,998 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7968036529680366 [2021-03-25 05:14:02,998 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 349 transitions. [2021-03-25 05:14:02,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 349 transitions. [2021-03-25 05:14:02,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:14:02,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 349 transitions. [2021-03-25 05:14:03,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:03,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:03,003 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:03,003 INFO L185 Difference]: Start difference. First operand has 40 places, 22 transitions, 100 flow. Second operand 3 states and 349 transitions. [2021-03-25 05:14:03,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 24 transitions, 135 flow [2021-03-25 05:14:03,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 24 transitions, 109 flow, removed 3 selfloop flow, removed 6 redundant places. [2021-03-25 05:14:03,005 INFO L241 Difference]: Finished difference. Result has 37 places, 22 transitions, 88 flow [2021-03-25 05:14:03,005 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=37, PETRI_TRANSITIONS=22} [2021-03-25 05:14:03,005 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, -3 predicate places. [2021-03-25 05:14:03,005 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:14:03,005 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 22 transitions, 88 flow [2021-03-25 05:14:03,006 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 22 transitions, 88 flow [2021-03-25 05:14:03,006 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 22 transitions, 88 flow [2021-03-25 05:14:03,009 INFO L129 PetriNetUnfolder]: 3/31 cut-off events. [2021-03-25 05:14:03,009 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-25 05:14:03,009 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 31 events. 3/31 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 64 event pairs, 2 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 62. Up to 12 conditions per place. [2021-03-25 05:14:03,010 INFO L142 LiptonReduction]: Number of co-enabled transitions 140 [2021-03-25 05:14:03,011 INFO L154 LiptonReduction]: Checked pairs total: 89 [2021-03-25 05:14:03,011 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:14:03,012 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7 [2021-03-25 05:14:03,012 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 22 transitions, 88 flow [2021-03-25 05:14:03,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 114.25) internal successors, (457), 4 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:03,012 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:14:03,012 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:14:03,013 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 05:14:03,013 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:14:03,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:14:03,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1989259157, now seen corresponding path program 1 times [2021-03-25 05:14:03,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:14:03,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520516620] [2021-03-25 05:14:03,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:14:03,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:14:03,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:14:03,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:14:03,054 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 05:14:03,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 05:14:03,063 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 05:14:03,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520516620] [2021-03-25 05:14:03,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:14:03,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:14:03,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509680573] [2021-03-25 05:14:03,064 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:14:03,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:14:03,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:14:03,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:14:03,066 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 146 [2021-03-25 05:14:03,067 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 22 transitions, 88 flow. Second operand has 4 states, 4 states have (on average 109.5) internal successors, (438), 4 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:03,067 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:14:03,067 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 146 [2021-03-25 05:14:03,067 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:14:03,103 INFO L129 PetriNetUnfolder]: 4/44 cut-off events. [2021-03-25 05:14:03,103 INFO L130 PetriNetUnfolder]: For 35/55 co-relation queries the response was YES. [2021-03-25 05:14:03,104 INFO L84 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 44 events. 4/44 cut-off events. For 35/55 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 128 event pairs, 0 based on Foata normal form. 8/51 useless extension candidates. Maximal degree in co-relation 104. Up to 16 conditions per place. [2021-03-25 05:14:03,104 INFO L132 encePairwiseOnDemand]: 138/146 looper letters, 6 selfloop transitions, 7 changer transitions 1/27 dead transitions. [2021-03-25 05:14:03,104 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 27 transitions, 145 flow [2021-03-25 05:14:03,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:14:03,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:14:03,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 556 transitions. [2021-03-25 05:14:03,106 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7616438356164383 [2021-03-25 05:14:03,106 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 556 transitions. [2021-03-25 05:14:03,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 556 transitions. [2021-03-25 05:14:03,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:14:03,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 556 transitions. [2021-03-25 05:14:03,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.2) internal successors, (556), 5 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:03,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 146.0) internal successors, (876), 6 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:03,109 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 146.0) internal successors, (876), 6 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:03,109 INFO L185 Difference]: Start difference. First operand has 37 places, 22 transitions, 88 flow. Second operand 5 states and 556 transitions. [2021-03-25 05:14:03,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 27 transitions, 145 flow [2021-03-25 05:14:03,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 27 transitions, 137 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 05:14:03,110 INFO L241 Difference]: Finished difference. Result has 42 places, 25 transitions, 135 flow [2021-03-25 05:14:03,110 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=135, PETRI_PLACES=42, PETRI_TRANSITIONS=25} [2021-03-25 05:14:03,111 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 2 predicate places. [2021-03-25 05:14:03,111 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:14:03,111 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 42 places, 25 transitions, 135 flow [2021-03-25 05:14:03,111 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 42 places, 25 transitions, 135 flow [2021-03-25 05:14:03,111 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 41 places, 25 transitions, 135 flow [2021-03-25 05:14:03,115 INFO L129 PetriNetUnfolder]: 3/39 cut-off events. [2021-03-25 05:14:03,115 INFO L130 PetriNetUnfolder]: For 27/37 co-relation queries the response was YES. [2021-03-25 05:14:03,115 INFO L84 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 39 events. 3/39 cut-off events. For 27/37 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 107 event pairs, 0 based on Foata normal form. 3/41 useless extension candidates. Maximal degree in co-relation 97. Up to 15 conditions per place. [2021-03-25 05:14:03,115 INFO L142 LiptonReduction]: Number of co-enabled transitions 162 [2021-03-25 05:14:03,142 INFO L154 LiptonReduction]: Checked pairs total: 293 [2021-03-25 05:14:03,142 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 05:14:03,142 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 31 [2021-03-25 05:14:03,145 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 25 transitions, 136 flow [2021-03-25 05:14:03,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 109.5) internal successors, (438), 4 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:03,146 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:14:03,146 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:14:03,146 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 05:14:03,147 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:14:03,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:14:03,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1646722839, now seen corresponding path program 2 times [2021-03-25 05:14:03,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:14:03,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640159028] [2021-03-25 05:14:03,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:14:03,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:14:03,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:14:03,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:14:03,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:14:03,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:14:03,194 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 05:14:03,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640159028] [2021-03-25 05:14:03,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:14:03,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:14:03,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202849092] [2021-03-25 05:14:03,195 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:14:03,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:14:03,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:14:03,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:14:03,196 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 147 [2021-03-25 05:14:03,197 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 25 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 126.75) internal successors, (507), 4 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:03,197 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:14:03,197 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 147 [2021-03-25 05:14:03,197 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:14:03,215 INFO L129 PetriNetUnfolder]: 2/41 cut-off events. [2021-03-25 05:14:03,216 INFO L130 PetriNetUnfolder]: For 64/81 co-relation queries the response was YES. [2021-03-25 05:14:03,216 INFO L84 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 41 events. 2/41 cut-off events. For 64/81 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 118 event pairs, 0 based on Foata normal form. 6/46 useless extension candidates. Maximal degree in co-relation 109. Up to 15 conditions per place. [2021-03-25 05:14:03,216 INFO L132 encePairwiseOnDemand]: 142/147 looper letters, 1 selfloop transitions, 3 changer transitions 5/25 dead transitions. [2021-03-25 05:14:03,216 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 25 transitions, 150 flow [2021-03-25 05:14:03,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:14:03,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:14:03,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 512 transitions. [2021-03-25 05:14:03,219 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8707482993197279 [2021-03-25 05:14:03,219 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 512 transitions. [2021-03-25 05:14:03,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 512 transitions. [2021-03-25 05:14:03,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:14:03,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 512 transitions. [2021-03-25 05:14:03,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:03,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 147.0) internal successors, (735), 5 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:03,223 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 147.0) internal successors, (735), 5 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:03,223 INFO L185 Difference]: Start difference. First operand has 41 places, 25 transitions, 136 flow. Second operand 4 states and 512 transitions. [2021-03-25 05:14:03,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 25 transitions, 150 flow [2021-03-25 05:14:03,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 25 transitions, 143 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-03-25 05:14:03,225 INFO L241 Difference]: Finished difference. Result has 44 places, 20 transitions, 102 flow [2021-03-25 05:14:03,225 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=44, PETRI_TRANSITIONS=20} [2021-03-25 05:14:03,225 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2021-03-25 05:14:03,225 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:14:03,225 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 20 transitions, 102 flow [2021-03-25 05:14:03,226 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 20 transitions, 102 flow [2021-03-25 05:14:03,226 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 20 transitions, 102 flow [2021-03-25 05:14:03,229 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-03-25 05:14:03,229 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-03-25 05:14:03,229 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 20 events. 0/20 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 16 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2021-03-25 05:14:03,230 INFO L142 LiptonReduction]: Number of co-enabled transitions 116 [2021-03-25 05:14:03,274 INFO L154 LiptonReduction]: Checked pairs total: 104 [2021-03-25 05:14:03,275 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 05:14:03,275 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 50 [2021-03-25 05:14:03,276 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 18 transitions, 98 flow [2021-03-25 05:14:03,276 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 126.75) internal successors, (507), 4 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:03,276 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:14:03,276 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:14:03,276 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-25 05:14:03,277 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:14:03,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:14:03,277 INFO L82 PathProgramCache]: Analyzing trace with hash -318017799, now seen corresponding path program 1 times [2021-03-25 05:14:03,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:14:03,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229971390] [2021-03-25 05:14:03,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:14:03,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:14:03,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:14:03,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:14:03,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:14:03,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:14:03,318 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 05:14:03,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229971390] [2021-03-25 05:14:03,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:14:03,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:14:03,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234737189] [2021-03-25 05:14:03,318 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:14:03,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:14:03,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:14:03,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:14:03,319 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 149 [2021-03-25 05:14:03,320 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 18 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 125.75) internal successors, (503), 4 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:03,320 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:14:03,320 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 149 [2021-03-25 05:14:03,320 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:14:03,331 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2021-03-25 05:14:03,331 INFO L130 PetriNetUnfolder]: For 58/61 co-relation queries the response was YES. [2021-03-25 05:14:03,331 INFO L84 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 17 events. 0/17 cut-off events. For 58/61 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 14 event pairs, 0 based on Foata normal form. 2/19 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-03-25 05:14:03,331 INFO L132 encePairwiseOnDemand]: 146/149 looper letters, 0 selfloop transitions, 0 changer transitions 17/17 dead transitions. [2021-03-25 05:14:03,331 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 17 transitions, 90 flow [2021-03-25 05:14:03,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:14:03,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:14:03,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 505 transitions. [2021-03-25 05:14:03,333 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8473154362416108 [2021-03-25 05:14:03,333 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 505 transitions. [2021-03-25 05:14:03,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 505 transitions. [2021-03-25 05:14:03,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:14:03,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 505 transitions. [2021-03-25 05:14:03,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 126.25) internal successors, (505), 4 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:03,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:03,336 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:03,336 INFO L185 Difference]: Start difference. First operand has 42 places, 18 transitions, 98 flow. Second operand 4 states and 505 transitions. [2021-03-25 05:14:03,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 17 transitions, 90 flow [2021-03-25 05:14:03,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 17 transitions, 54 flow, removed 6 selfloop flow, removed 12 redundant places. [2021-03-25 05:14:03,337 INFO L241 Difference]: Finished difference. Result has 32 places, 0 transitions, 0 flow [2021-03-25 05:14:03,337 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=32, PETRI_TRANSITIONS=0} [2021-03-25 05:14:03,337 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, -8 predicate places. [2021-03-25 05:14:03,337 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:14:03,337 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 0 transitions, 0 flow [2021-03-25 05:14:03,338 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 32 places, 0 transitions, 0 flow [2021-03-25 05:14:03,338 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 05:14:03,338 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 05:14:03,338 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:14:03,338 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 05:14:03,338 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 05:14:03,338 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 05:14:03,338 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:14:03,338 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 05:14:03,339 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 05:14:03,339 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 125.75) internal successors, (503), 4 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:03,339 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-25 05:14:03,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 05:14:03 BasicIcfg [2021-03-25 05:14:03,342 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 05:14:03,343 INFO L168 Benchmark]: Toolchain (without parser) took 5232.05 ms. Allocated memory was 255.9 MB in the beginning and 425.7 MB in the end (delta: 169.9 MB). Free memory was 233.4 MB in the beginning and 199.0 MB in the end (delta: 34.4 MB). Peak memory consumption was 204.3 MB. Max. memory is 16.0 GB. [2021-03-25 05:14:03,343 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 05:14:03,343 INFO L168 Benchmark]: CACSL2BoogieTranslator took 508.80 ms. Allocated memory was 255.9 MB in the beginning and 354.4 MB in the end (delta: 98.6 MB). Free memory was 233.0 MB in the beginning and 316.9 MB in the end (delta: -83.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-25 05:14:03,344 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.73 ms. Allocated memory is still 354.4 MB. Free memory was 316.9 MB in the beginning and 314.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:14:03,344 INFO L168 Benchmark]: Boogie Preprocessor took 26.45 ms. Allocated memory is still 354.4 MB. Free memory was 314.8 MB in the beginning and 313.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:14:03,344 INFO L168 Benchmark]: RCFGBuilder took 375.54 ms. Allocated memory is still 354.4 MB. Free memory was 313.7 MB in the beginning and 289.1 MB in the end (delta: 24.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-03-25 05:14:03,344 INFO L168 Benchmark]: TraceAbstraction took 4260.31 ms. Allocated memory was 354.4 MB in the beginning and 425.7 MB in the end (delta: 71.3 MB). Free memory was 288.6 MB in the beginning and 199.0 MB in the end (delta: 89.5 MB). Peak memory consumption was 161.8 MB. Max. memory is 16.0 GB. [2021-03-25 05:14:03,345 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 508.80 ms. Allocated memory was 255.9 MB in the beginning and 354.4 MB in the end (delta: 98.6 MB). Free memory was 233.0 MB in the beginning and 316.9 MB in the end (delta: -83.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 54.73 ms. Allocated memory is still 354.4 MB. Free memory was 316.9 MB in the beginning and 314.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 26.45 ms. Allocated memory is still 354.4 MB. Free memory was 314.8 MB in the beginning and 313.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 375.54 ms. Allocated memory is still 354.4 MB. Free memory was 313.7 MB in the beginning and 289.1 MB in the end (delta: 24.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4260.31 ms. Allocated memory was 354.4 MB in the beginning and 425.7 MB in the end (delta: 71.3 MB). Free memory was 288.6 MB in the beginning and 199.0 MB in the end (delta: 89.5 MB). Peak memory consumption was 161.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1369.2ms, 85 PlacesBefore, 40 PlacesAfterwards, 73 TransitionsBefore, 27 TransitionsAfterwards, 1392 CoEnabledTransitionPairs, 4 FixpointIterations, 17 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 46 TotalNumberOfCompositions, 1938 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1076, positive: 1024, positive conditional: 0, positive unconditional: 1024, negative: 52, negative conditional: 0, negative unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 693, positive: 667, positive conditional: 0, positive unconditional: 667, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 693, positive: 667, positive conditional: 0, positive unconditional: 667, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1076, positive: 357, positive conditional: 0, positive unconditional: 357, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 693, unknown conditional: 0, unknown unconditional: 693] , Statistics on independence cache: Total cache size (in pairs): 76, Positive cache size: 70, Positive conditional cache size: 0, Positive unconditional cache size: 70, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 518.7ms, 39 PlacesBefore, 35 PlacesAfterwards, 31 TransitionsBefore, 27 TransitionsAfterwards, 268 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 4 TotalNumberOfCompositions, 480 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 225, positive: 194, positive conditional: 0, positive unconditional: 194, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 23, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 23, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 225, positive: 175, positive conditional: 0, positive unconditional: 175, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 23, unknown conditional: 0, unknown unconditional: 23] , Statistics on independence cache: Total cache size (in pairs): 84, Positive cache size: 75, Positive conditional cache size: 0, Positive unconditional cache size: 75, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 526.2ms, 37 PlacesBefore, 36 PlacesAfterwards, 27 TransitionsBefore, 26 TransitionsAfterwards, 236 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 308 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 81, positive: 59, positive conditional: 0, positive unconditional: 59, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 81, positive: 59, positive conditional: 0, positive unconditional: 59, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 85, Positive cache size: 75, Positive conditional cache size: 0, Positive unconditional cache size: 75, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.7ms, 37 PlacesBefore, 37 PlacesAfterwards, 26 TransitionsBefore, 26 TransitionsAfterwards, 236 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 149 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 58, positive: 47, positive conditional: 0, positive unconditional: 47, negative: 11, negative conditional: 0, negative unconditional: 11, 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: 58, positive: 45, positive conditional: 0, positive unconditional: 45, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 87, Positive cache size: 77, Positive conditional cache size: 0, Positive unconditional cache size: 77, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 14.9ms, 42 PlacesBefore, 42 PlacesAfterwards, 33 TransitionsBefore, 33 TransitionsAfterwards, 336 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 202 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 41, positive: 30, positive conditional: 0, positive unconditional: 30, negative: 11, negative conditional: 0, negative unconditional: 11, 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: 41, positive: 30, positive conditional: 0, positive unconditional: 30, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 87, Positive cache size: 77, Positive conditional cache size: 0, Positive unconditional cache size: 77, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 56.3ms, 46 PlacesBefore, 44 PlacesAfterwards, 25 TransitionsBefore, 24 TransitionsAfterwards, 218 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 225 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 94, positive: 78, positive conditional: 0, positive unconditional: 78, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 3, positive conditional: 0, positive unconditional: 3, 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: 4, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 94, positive: 75, positive conditional: 0, positive unconditional: 75, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 76, Positive cache size: 67, Positive conditional cache size: 0, Positive unconditional cache size: 67, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 61.2ms, 41 PlacesBefore, 40 PlacesAfterwards, 23 TransitionsBefore, 22 TransitionsAfterwards, 160 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 145 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 73, positive: 61, positive conditional: 0, positive unconditional: 61, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 73, positive: 61, positive conditional: 0, positive unconditional: 61, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 46, Positive cache size: 39, Positive conditional cache size: 0, Positive unconditional cache size: 39, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.8ms, 37 PlacesBefore, 37 PlacesAfterwards, 22 TransitionsBefore, 22 TransitionsAfterwards, 140 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 89 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 12, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 8, negative conditional: 0, negative unconditional: 8, 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: 12, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 46, Positive cache size: 39, Positive conditional cache size: 0, Positive unconditional cache size: 39, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 31.2ms, 42 PlacesBefore, 41 PlacesAfterwards, 25 TransitionsBefore, 25 TransitionsAfterwards, 162 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 293 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 59, positive: 38, positive conditional: 0, positive unconditional: 38, negative: 21, negative conditional: 0, negative unconditional: 21, 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: 59, positive: 37, positive conditional: 0, positive unconditional: 37, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 44, Positive cache size: 38, Positive conditional cache size: 0, Positive unconditional cache size: 38, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 49.7ms, 44 PlacesBefore, 42 PlacesAfterwards, 20 TransitionsBefore, 18 TransitionsAfterwards, 116 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 104 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 24, positive: 15, positive conditional: 0, positive unconditional: 15, 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: 6, positive: 5, positive conditional: 0, positive unconditional: 5, 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: 6, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 24, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 6, unknown conditional: 0, unknown unconditional: 6] , Statistics on independence cache: Total cache size (in pairs): 25, Positive cache size: 21, Positive conditional cache size: 0, Positive unconditional cache size: 21, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.7ms, 32 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): 25, Positive cache size: 21, Positive conditional cache size: 0, Positive unconditional cache size: 21, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - 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 5 procedures, 90 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 5.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 4169.5ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 495.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1451.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 66 SDtfs, 41 SDslu, 28 SDs, 0 SdLazy, 77 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 97.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 131.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=179occurred in iteration=4, InterpolantAutomatonStates: 38, 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: 30.9ms SsaConstructionTime, 180.5ms SatisfiabilityAnalysisTime, 501.6ms InterpolantComputationTime, 138 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 128 ConstructedInterpolants, 0 QuantifiedInterpolants, 966 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...