/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 00:43:48,128 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 00:43:48,131 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 00:43:48,160 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-26 00:43:48,160 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-26 00:43:48,163 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-26 00:43:48,164 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-26 00:43:48,168 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-26 00:43:48,170 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-26 00:43:48,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-26 00:43:48,175 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-26 00:43:48,176 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-26 00:43:48,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 00:43:48,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 00:43:48,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 00:43:48,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 00:43:48,181 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 00:43:48,182 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 00:43:48,184 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 00:43:48,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 00:43:48,190 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 00:43:48,191 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 00:43:48,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 00:43:48,193 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 00:43:48,197 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-26 00:43:48,197 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-26 00:43:48,197 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-26 00:43:48,198 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-26 00:43:48,199 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-26 00:43:48,199 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-26 00:43:48,199 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-26 00:43:48,200 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-26 00:43:48,201 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-26 00:43:48,201 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-26 00:43:48,202 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-26 00:43:48,202 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-26 00:43:48,202 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-26 00:43:48,202 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-26 00:43:48,203 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 00:43:48,203 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 00:43:48,203 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 00:43:48,204 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf [2021-03-26 00:43:48,231 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 00:43:48,231 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 00:43:48,234 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 00:43:48,234 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 00:43:48,234 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 00:43:48,234 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 00:43:48,234 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 00:43:48,234 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 00:43:48,234 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 00:43:48,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 00:43:48,235 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 00:43:48,235 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 00:43:48,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 00:43:48,235 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 00:43:48,235 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 00:43:48,235 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 00:43:48,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 00:43:48,236 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 00:43:48,236 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 00:43:48,236 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 00:43:48,236 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 00:43:48,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 00:43:48,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 00:43:48,236 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 00:43:48,237 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 00:43:48,237 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 00:43:48,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 00:43:48,237 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-03-26 00:43:48,237 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 00:43:48,237 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 00:43:48,237 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 00:43:48,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 00:43:48,499 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 00:43:48,500 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 00:43:48,501 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-26 00:43:48,501 INFO L275 PluginConnector]: CDTParser initialized [2021-03-26 00:43:48,502 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc.i [2021-03-26 00:43:48,541 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8e48e115/a33e7d88593849e690bce1e1f9879712/FLAG9a806cf4d [2021-03-26 00:43:48,941 INFO L306 CDTParser]: Found 1 translation units. [2021-03-26 00:43:48,942 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc.i [2021-03-26 00:43:48,949 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8e48e115/a33e7d88593849e690bce1e1f9879712/FLAG9a806cf4d [2021-03-26 00:43:49,320 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8e48e115/a33e7d88593849e690bce1e1f9879712 [2021-03-26 00:43:49,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 00:43:49,323 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-26 00:43:49,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-26 00:43:49,324 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-26 00:43:49,325 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-26 00:43:49,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 12:43:49" (1/1) ... [2021-03-26 00:43:49,326 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29242085 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:43:49, skipping insertion in model container [2021-03-26 00:43:49,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 12:43:49" (1/1) ... [2021-03-26 00:43:49,332 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-26 00:43:49,371 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-26 00:43:49,452 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/safe020_pso.oepc.i[950,963] [2021-03-26 00:43:49,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 00:43:49,583 INFO L203 MainTranslator]: Completed pre-run [2021-03-26 00:43:49,620 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/safe020_pso.oepc.i[950,963] [2021-03-26 00:43:49,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 00:43:49,706 INFO L208 MainTranslator]: Completed translation [2021-03-26 00:43:49,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:43:49 WrapperNode [2021-03-26 00:43:49,707 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-26 00:43:49,708 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 00:43:49,708 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 00:43:49,709 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 00:43:49,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:43:49" (1/1) ... [2021-03-26 00:43:49,721 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:43:49" (1/1) ... [2021-03-26 00:43:49,735 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 00:43:49,736 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 00:43:49,736 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 00:43:49,736 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 00:43:49,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:43:49" (1/1) ... [2021-03-26 00:43:49,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:43:49" (1/1) ... [2021-03-26 00:43:49,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:43:49" (1/1) ... [2021-03-26 00:43:49,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:43:49" (1/1) ... [2021-03-26 00:43:49,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:43:49" (1/1) ... [2021-03-26 00:43:49,760 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:43:49" (1/1) ... [2021-03-26 00:43:49,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:43:49" (1/1) ... [2021-03-26 00:43:49,762 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 00:43:49,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 00:43:49,769 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 00:43:49,769 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 00:43:49,769 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:43:49" (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 [2021-03-26 00:43:49,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-26 00:43:49,815 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-26 00:43:49,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-26 00:43:49,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-26 00:43:49,816 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-26 00:43:49,816 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-26 00:43:49,816 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-26 00:43:49,816 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-26 00:43:49,816 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-26 00:43:49,817 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-26 00:43:49,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-26 00:43:49,817 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-26 00:43:49,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 00:43:49,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 00:43:49,818 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-26 00:43:50,076 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 00:43:50,076 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-26 00:43:50,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 12:43:50 BoogieIcfgContainer [2021-03-26 00:43:50,077 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 00:43:50,078 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 00:43:50,078 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 00:43:50,080 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 00:43:50,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.03 12:43:49" (1/3) ... [2021-03-26 00:43:50,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b269de9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 12:43:50, skipping insertion in model container [2021-03-26 00:43:50,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:43:49" (2/3) ... [2021-03-26 00:43:50,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b269de9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 12:43:50, skipping insertion in model container [2021-03-26 00:43:50,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 12:43:50" (3/3) ... [2021-03-26 00:43:50,081 INFO L111 eAbstractionObserver]: Analyzing ICFG safe020_pso.oepc.i [2021-03-26 00:43:50,085 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 00:43:50,088 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-26 00:43:50,088 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 00:43:50,108 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,108 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,108 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,108 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,108 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,109 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,109 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,109 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,109 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,109 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,109 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,109 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,110 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,110 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,110 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,110 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,110 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,110 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,110 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,110 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,110 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,110 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,111 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,111 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,111 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,111 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,111 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,111 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,111 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,111 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,112 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,112 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,112 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,112 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,112 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,112 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,113 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,114 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,114 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,114 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,117 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,117 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,117 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,117 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,119 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,119 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,119 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,119 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:43:50,120 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 00:43:50,131 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-26 00:43:50,147 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 00:43:50,147 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 00:43:50,147 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 00:43:50,147 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 00:43:50,148 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 00:43:50,148 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 00:43:50,148 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 00:43:50,148 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 00:43:50,154 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2021-03-26 00:43:50,175 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2021-03-26 00:43:50,175 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:43:50,177 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-03-26 00:43:50,177 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 73 transitions, 161 flow [2021-03-26 00:43:50,180 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 58 transitions, 125 flow [2021-03-26 00:43:50,181 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:43:50,189 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 58 transitions, 125 flow [2021-03-26 00:43:50,191 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 58 transitions, 125 flow [2021-03-26 00:43:50,191 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 67 places, 58 transitions, 125 flow [2021-03-26 00:43:50,217 INFO L129 PetriNetUnfolder]: 1/58 cut-off events. [2021-03-26 00:43:50,217 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:43:50,217 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 58 events. 1/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2021-03-26 00:43:50,219 INFO L142 LiptonReduction]: Number of co-enabled transitions 804 [2021-03-26 00:43:51,751 INFO L154 LiptonReduction]: Checked pairs total: 958 [2021-03-26 00:43:51,751 INFO L156 LiptonReduction]: Total number of compositions: 38 [2021-03-26 00:43:51,753 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1573 [2021-03-26 00:43:51,760 INFO L129 PetriNetUnfolder]: 0/18 cut-off events. [2021-03-26 00:43:51,760 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:43:51,760 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:43:51,760 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:43:51,760 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:43:51,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:43:51,763 INFO L82 PathProgramCache]: Analyzing trace with hash 456015442, now seen corresponding path program 1 times [2021-03-26 00:43:51,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:43:51,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058636202] [2021-03-26 00:43:51,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:43:51,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:43:51,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:43:51,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:43:51,920 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-26 00:43:51,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 00:43:51,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:43:51,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058636202] [2021-03-26 00:43:51,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:43:51,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 00:43:51,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030932960] [2021-03-26 00:43:51,940 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:43:51,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:43:51,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:43:51,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:43:51,950 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 111 [2021-03-26 00:43:51,952 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 49 flow. Second operand has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:43:51,952 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:43:51,952 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 111 [2021-03-26 00:43:51,953 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:43:51,979 INFO L129 PetriNetUnfolder]: 8/48 cut-off events. [2021-03-26 00:43:51,979 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:43:51,979 INFO L84 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 48 events. 8/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 121 event pairs, 2 based on Foata normal form. 4/49 useless extension candidates. Maximal degree in co-relation 73. Up to 19 conditions per place. [2021-03-26 00:43:51,980 INFO L132 encePairwiseOnDemand]: 105/111 looper letters, 6 selfloop transitions, 5 changer transitions 0/24 dead transitions. [2021-03-26 00:43:51,980 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 24 transitions, 79 flow [2021-03-26 00:43:51,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 00:43:51,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 00:43:51,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 377 transitions. [2021-03-26 00:43:51,988 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8490990990990991 [2021-03-26 00:43:51,989 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 377 transitions. [2021-03-26 00:43:51,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 377 transitions. [2021-03-26 00:43:51,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:43:51,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 377 transitions. [2021-03-26 00:43:51,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:43:51,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:43:51,997 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:43:51,998 INFO L185 Difference]: Start difference. First operand has 30 places, 20 transitions, 49 flow. Second operand 4 states and 377 transitions. [2021-03-26 00:43:51,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 24 transitions, 79 flow [2021-03-26 00:43:52,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 24 transitions, 76 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-26 00:43:52,001 INFO L241 Difference]: Finished difference. Result has 32 places, 22 transitions, 73 flow [2021-03-26 00:43:52,002 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2021-03-26 00:43:52,003 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2021-03-26 00:43:52,003 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:43:52,003 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 22 transitions, 73 flow [2021-03-26 00:43:52,003 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 32 places, 22 transitions, 73 flow [2021-03-26 00:43:52,004 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 22 transitions, 73 flow [2021-03-26 00:43:52,008 INFO L129 PetriNetUnfolder]: 6/45 cut-off events. [2021-03-26 00:43:52,008 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-03-26 00:43:52,008 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 45 events. 6/45 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 124 event pairs, 4 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 76. Up to 16 conditions per place. [2021-03-26 00:43:52,009 INFO L142 LiptonReduction]: Number of co-enabled transitions 128 [2021-03-26 00:43:52,274 INFO L154 LiptonReduction]: Checked pairs total: 119 [2021-03-26 00:43:52,274 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 00:43:52,274 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 271 [2021-03-26 00:43:52,275 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 19 transitions, 67 flow [2021-03-26 00:43:52,275 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:43:52,275 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:43:52,276 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:43:52,276 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 00:43:52,276 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:43:52,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:43:52,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1251576527, now seen corresponding path program 1 times [2021-03-26 00:43:52,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:43:52,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912760497] [2021-03-26 00:43:52,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:43:52,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:43:52,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:43:52,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:43:52,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:43:52,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:43:52,315 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-26 00:43:52,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 00:43:52,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:43:52,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912760497] [2021-03-26 00:43:52,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:43:52,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 00:43:52,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125985328] [2021-03-26 00:43:52,322 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:43:52,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:43:52,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:43:52,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:43:52,323 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 114 [2021-03-26 00:43:52,324 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 19 transitions, 67 flow. Second operand has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:43:52,324 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:43:52,324 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 114 [2021-03-26 00:43:52,324 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:43:52,362 INFO L129 PetriNetUnfolder]: 35/106 cut-off events. [2021-03-26 00:43:52,363 INFO L130 PetriNetUnfolder]: For 64/84 co-relation queries the response was YES. [2021-03-26 00:43:52,363 INFO L84 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 106 events. 35/106 cut-off events. For 64/84 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 412 event pairs, 2 based on Foata normal form. 9/114 useless extension candidates. Maximal degree in co-relation 260. Up to 35 conditions per place. [2021-03-26 00:43:52,363 INFO L132 encePairwiseOnDemand]: 107/114 looper letters, 9 selfloop transitions, 15 changer transitions 0/34 dead transitions. [2021-03-26 00:43:52,364 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 34 transitions, 183 flow [2021-03-26 00:43:52,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 00:43:52,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 00:43:52,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 457 transitions. [2021-03-26 00:43:52,366 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8017543859649123 [2021-03-26 00:43:52,366 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 457 transitions. [2021-03-26 00:43:52,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 457 transitions. [2021-03-26 00:43:52,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:43:52,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 457 transitions. [2021-03-26 00:43:52,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.4) internal successors, (457), 5 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) [2021-03-26 00:43:52,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:43:52,370 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:43:52,370 INFO L185 Difference]: Start difference. First operand has 29 places, 19 transitions, 67 flow. Second operand 5 states and 457 transitions. [2021-03-26 00:43:52,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 34 transitions, 183 flow [2021-03-26 00:43:52,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 34 transitions, 165 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-26 00:43:52,371 INFO L241 Difference]: Finished difference. Result has 35 places, 30 transitions, 178 flow [2021-03-26 00:43:52,371 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2021-03-26 00:43:52,372 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2021-03-26 00:43:52,372 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:43:52,372 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 30 transitions, 178 flow [2021-03-26 00:43:52,372 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 30 transitions, 178 flow [2021-03-26 00:43:52,372 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 30 transitions, 178 flow [2021-03-26 00:43:52,380 INFO L129 PetriNetUnfolder]: 26/94 cut-off events. [2021-03-26 00:43:52,380 INFO L130 PetriNetUnfolder]: For 80/98 co-relation queries the response was YES. [2021-03-26 00:43:52,381 INFO L84 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 94 events. 26/94 cut-off events. For 80/98 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 394 event pairs, 7 based on Foata normal form. 3/93 useless extension candidates. Maximal degree in co-relation 285. Up to 33 conditions per place. [2021-03-26 00:43:52,381 INFO L142 LiptonReduction]: Number of co-enabled transitions 148 [2021-03-26 00:43:52,518 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-03-26 00:43:52,714 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-03-26 00:43:52,772 INFO L154 LiptonReduction]: Checked pairs total: 194 [2021-03-26 00:43:52,772 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 00:43:52,772 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 400 [2021-03-26 00:43:52,773 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 176 flow [2021-03-26 00:43:52,773 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:43:52,773 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:43:52,774 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:43:52,774 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 00:43:52,774 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:43:52,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:43:52,774 INFO L82 PathProgramCache]: Analyzing trace with hash 792750374, now seen corresponding path program 1 times [2021-03-26 00:43:52,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:43:52,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241272159] [2021-03-26 00:43:52,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:43:52,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:43:52,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:43:52,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:43:52,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:43:52,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:43:52,825 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-26 00:43:52,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 00:43:52,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:43:52,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241272159] [2021-03-26 00:43:52,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:43:52,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 00:43:52,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471581658] [2021-03-26 00:43:52,833 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 00:43:52,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:43:52,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 00:43:52,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-26 00:43:52,834 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 115 [2021-03-26 00:43:52,835 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 176 flow. Second operand has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:43:52,835 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:43:52,835 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 115 [2021-03-26 00:43:52,835 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:43:52,867 INFO L129 PetriNetUnfolder]: 25/98 cut-off events. [2021-03-26 00:43:52,867 INFO L130 PetriNetUnfolder]: For 200/264 co-relation queries the response was YES. [2021-03-26 00:43:52,867 INFO L84 FinitePrefix]: Finished finitePrefix Result has 369 conditions, 98 events. 25/98 cut-off events. For 200/264 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 422 event pairs, 2 based on Foata normal form. 12/108 useless extension candidates. Maximal degree in co-relation 354. Up to 32 conditions per place. [2021-03-26 00:43:52,868 INFO L132 encePairwiseOnDemand]: 108/115 looper letters, 7 selfloop transitions, 8 changer transitions 12/36 dead transitions. [2021-03-26 00:43:52,868 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 36 transitions, 285 flow [2021-03-26 00:43:52,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 00:43:52,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 00:43:52,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 453 transitions. [2021-03-26 00:43:52,870 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7878260869565218 [2021-03-26 00:43:52,870 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 453 transitions. [2021-03-26 00:43:52,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 453 transitions. [2021-03-26 00:43:52,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:43:52,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 453 transitions. [2021-03-26 00:43:52,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.6) internal successors, (453), 5 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:43:52,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:43:52,873 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:43:52,873 INFO L185 Difference]: Start difference. First operand has 34 places, 29 transitions, 176 flow. Second operand 5 states and 453 transitions. [2021-03-26 00:43:52,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 36 transitions, 285 flow [2021-03-26 00:43:52,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 36 transitions, 285 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-26 00:43:52,876 INFO L241 Difference]: Finished difference. Result has 40 places, 22 transitions, 148 flow [2021-03-26 00:43:52,876 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=148, PETRI_PLACES=40, PETRI_TRANSITIONS=22} [2021-03-26 00:43:52,876 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2021-03-26 00:43:52,876 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:43:52,877 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 22 transitions, 148 flow [2021-03-26 00:43:52,877 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 22 transitions, 148 flow [2021-03-26 00:43:52,877 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 40 places, 22 transitions, 148 flow [2021-03-26 00:43:52,881 INFO L129 PetriNetUnfolder]: 9/48 cut-off events. [2021-03-26 00:43:52,881 INFO L130 PetriNetUnfolder]: For 79/82 co-relation queries the response was YES. [2021-03-26 00:43:52,881 INFO L84 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 48 events. 9/48 cut-off events. For 79/82 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 131 event pairs, 4 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 171. Up to 20 conditions per place. [2021-03-26 00:43:52,882 INFO L142 LiptonReduction]: Number of co-enabled transitions 110 [2021-03-26 00:43:52,883 INFO L154 LiptonReduction]: Checked pairs total: 46 [2021-03-26 00:43:52,883 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:43:52,883 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7 [2021-03-26 00:43:52,884 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 22 transitions, 148 flow [2021-03-26 00:43:52,884 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:43:52,884 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:43:52,884 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:43:52,885 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-26 00:43:52,885 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:43:52,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:43:52,885 INFO L82 PathProgramCache]: Analyzing trace with hash 405123337, now seen corresponding path program 1 times [2021-03-26 00:43:52,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:43:52,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167111728] [2021-03-26 00:43:52,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:43:52,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:43:52,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:43:52,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:43:52,909 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-26 00:43:52,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 00:43:52,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:43:52,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167111728] [2021-03-26 00:43:52,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:43:52,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 00:43:52,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560536817] [2021-03-26 00:43:52,915 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:43:52,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:43:52,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:43:52,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:43:52,916 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 115 [2021-03-26 00:43:52,916 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 22 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:43:52,917 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:43:52,917 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 115 [2021-03-26 00:43:52,917 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:43:52,930 INFO L129 PetriNetUnfolder]: 7/42 cut-off events. [2021-03-26 00:43:52,930 INFO L130 PetriNetUnfolder]: For 103/119 co-relation queries the response was YES. [2021-03-26 00:43:52,930 INFO L84 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 42 events. 7/42 cut-off events. For 103/119 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 105 event pairs, 3 based on Foata normal form. 3/44 useless extension candidates. Maximal degree in co-relation 169. Up to 18 conditions per place. [2021-03-26 00:43:52,931 INFO L132 encePairwiseOnDemand]: 110/115 looper letters, 4 selfloop transitions, 8 changer transitions 0/23 dead transitions. [2021-03-26 00:43:52,931 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 23 transitions, 182 flow [2021-03-26 00:43:52,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 00:43:52,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 00:43:52,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 379 transitions. [2021-03-26 00:43:52,932 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8239130434782609 [2021-03-26 00:43:52,932 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 379 transitions. [2021-03-26 00:43:52,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 379 transitions. [2021-03-26 00:43:52,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:43:52,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 379 transitions. [2021-03-26 00:43:52,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:43:52,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:43:52,934 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:43:52,934 INFO L185 Difference]: Start difference. First operand has 40 places, 22 transitions, 148 flow. Second operand 4 states and 379 transitions. [2021-03-26 00:43:52,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 23 transitions, 182 flow [2021-03-26 00:43:52,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 23 transitions, 143 flow, removed 4 selfloop flow, removed 7 redundant places. [2021-03-26 00:43:52,935 INFO L241 Difference]: Finished difference. Result has 37 places, 23 transitions, 142 flow [2021-03-26 00:43:52,936 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=37, PETRI_TRANSITIONS=23} [2021-03-26 00:43:52,936 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2021-03-26 00:43:52,936 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:43:52,936 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 23 transitions, 142 flow [2021-03-26 00:43:52,936 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 23 transitions, 142 flow [2021-03-26 00:43:52,936 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 23 transitions, 142 flow [2021-03-26 00:43:52,939 INFO L129 PetriNetUnfolder]: 7/42 cut-off events. [2021-03-26 00:43:52,939 INFO L130 PetriNetUnfolder]: For 46/50 co-relation queries the response was YES. [2021-03-26 00:43:52,939 INFO L84 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 42 events. 7/42 cut-off events. For 46/50 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 110 event pairs, 3 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 132. Up to 17 conditions per place. [2021-03-26 00:43:52,940 INFO L142 LiptonReduction]: Number of co-enabled transitions 114 [2021-03-26 00:43:52,941 INFO L154 LiptonReduction]: Checked pairs total: 40 [2021-03-26 00:43:52,941 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:43:52,941 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5 [2021-03-26 00:43:52,942 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 23 transitions, 142 flow [2021-03-26 00:43:52,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:43:52,942 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:43:52,942 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:43:52,942 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-26 00:43:52,942 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:43:52,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:43:52,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1651848443, now seen corresponding path program 1 times [2021-03-26 00:43:52,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:43:52,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662367080] [2021-03-26 00:43:52,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:43:52,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:43:52,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:43:52,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:43:52,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:43:52,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:43:52,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:43:52,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662367080] [2021-03-26 00:43:52,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:43:52,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 00:43:52,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652480605] [2021-03-26 00:43:52,968 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 00:43:52,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:43:52,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 00:43:52,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 00:43:52,969 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 115 [2021-03-26 00:43:52,969 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 23 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:43:52,969 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:43:52,970 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 115 [2021-03-26 00:43:52,970 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:43:52,982 INFO L129 PetriNetUnfolder]: 45/119 cut-off events. [2021-03-26 00:43:52,983 INFO L130 PetriNetUnfolder]: For 166/184 co-relation queries the response was YES. [2021-03-26 00:43:52,983 INFO L84 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 119 events. 45/119 cut-off events. For 166/184 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 485 event pairs, 18 based on Foata normal form. 1/110 useless extension candidates. Maximal degree in co-relation 337. Up to 77 conditions per place. [2021-03-26 00:43:52,983 INFO L132 encePairwiseOnDemand]: 110/115 looper letters, 4 selfloop transitions, 4 changer transitions 0/26 dead transitions. [2021-03-26 00:43:52,984 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 26 transitions, 164 flow [2021-03-26 00:43:52,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 00:43:52,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 00:43:52,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 285 transitions. [2021-03-26 00:43:52,984 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8260869565217391 [2021-03-26 00:43:52,984 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 285 transitions. [2021-03-26 00:43:52,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 285 transitions. [2021-03-26 00:43:52,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:43:52,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 285 transitions. [2021-03-26 00:43:52,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:43:52,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:43:52,986 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:43:52,986 INFO L185 Difference]: Start difference. First operand has 37 places, 23 transitions, 142 flow. Second operand 3 states and 285 transitions. [2021-03-26 00:43:52,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 26 transitions, 164 flow [2021-03-26 00:43:52,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 26 transitions, 156 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-03-26 00:43:52,988 INFO L241 Difference]: Finished difference. Result has 39 places, 26 transitions, 160 flow [2021-03-26 00:43:52,988 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=39, PETRI_TRANSITIONS=26} [2021-03-26 00:43:52,988 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2021-03-26 00:43:52,988 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:43:52,988 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 26 transitions, 160 flow [2021-03-26 00:43:52,988 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 26 transitions, 160 flow [2021-03-26 00:43:52,988 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 39 places, 26 transitions, 160 flow [2021-03-26 00:43:52,994 INFO L129 PetriNetUnfolder]: 43/116 cut-off events. [2021-03-26 00:43:52,994 INFO L130 PetriNetUnfolder]: For 144/158 co-relation queries the response was YES. [2021-03-26 00:43:52,995 INFO L84 FinitePrefix]: Finished finitePrefix Result has 348 conditions, 116 events. 43/116 cut-off events. For 144/158 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 509 event pairs, 19 based on Foata normal form. 2/106 useless extension candidates. Maximal degree in co-relation 331. Up to 73 conditions per place. [2021-03-26 00:43:52,995 INFO L142 LiptonReduction]: Number of co-enabled transitions 126 [2021-03-26 00:43:52,997 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 00:43:52,997 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:43:52,997 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9 [2021-03-26 00:43:52,997 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 26 transitions, 160 flow [2021-03-26 00:43:52,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:43:52,998 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:43:52,998 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:43:52,998 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-26 00:43:52,998 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:43:52,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:43:52,998 INFO L82 PathProgramCache]: Analyzing trace with hash -25263401, now seen corresponding path program 1 times [2021-03-26 00:43:52,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:43:52,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449339811] [2021-03-26 00:43:52,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:43:53,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:43:53,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:43:53,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:43:53,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:43:53,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:43:53,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:43:53,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:43:53,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:43:53,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449339811] [2021-03-26 00:43:53,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:43:53,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 00:43:53,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200222876] [2021-03-26 00:43:53,023 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:43:53,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:43:53,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:43:53,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:43:53,024 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 115 [2021-03-26 00:43:53,024 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 26 transitions, 160 flow. Second operand has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:43:53,024 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:43:53,024 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 115 [2021-03-26 00:43:53,024 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:43:53,043 INFO L129 PetriNetUnfolder]: 23/76 cut-off events. [2021-03-26 00:43:53,043 INFO L130 PetriNetUnfolder]: For 90/118 co-relation queries the response was YES. [2021-03-26 00:43:53,043 INFO L84 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 76 events. 23/76 cut-off events. For 90/118 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 247 event pairs, 3 based on Foata normal form. 20/93 useless extension candidates. Maximal degree in co-relation 257. Up to 48 conditions per place. [2021-03-26 00:43:53,043 INFO L132 encePairwiseOnDemand]: 110/115 looper letters, 4 selfloop transitions, 7 changer transitions 0/29 dead transitions. [2021-03-26 00:43:53,043 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 29 transitions, 194 flow [2021-03-26 00:43:53,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 00:43:53,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 00:43:53,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 380 transitions. [2021-03-26 00:43:53,048 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8260869565217391 [2021-03-26 00:43:53,048 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 380 transitions. [2021-03-26 00:43:53,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 380 transitions. [2021-03-26 00:43:53,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:43:53,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 380 transitions. [2021-03-26 00:43:53,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:43:53,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:43:53,050 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:43:53,050 INFO L185 Difference]: Start difference. First operand has 39 places, 26 transitions, 160 flow. Second operand 4 states and 380 transitions. [2021-03-26 00:43:53,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 29 transitions, 194 flow [2021-03-26 00:43:53,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 29 transitions, 175 flow, removed 3 selfloop flow, removed 3 redundant places. [2021-03-26 00:43:53,052 INFO L241 Difference]: Finished difference. Result has 40 places, 29 transitions, 181 flow [2021-03-26 00:43:53,052 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=40, PETRI_TRANSITIONS=29} [2021-03-26 00:43:53,052 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2021-03-26 00:43:53,052 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:43:53,052 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 29 transitions, 181 flow [2021-03-26 00:43:53,052 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 29 transitions, 181 flow [2021-03-26 00:43:53,052 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 40 places, 29 transitions, 181 flow [2021-03-26 00:43:53,056 INFO L129 PetriNetUnfolder]: 22/74 cut-off events. [2021-03-26 00:43:53,056 INFO L130 PetriNetUnfolder]: For 60/78 co-relation queries the response was YES. [2021-03-26 00:43:53,056 INFO L84 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 74 events. 22/74 cut-off events. For 60/78 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 238 event pairs, 3 based on Foata normal form. 5/78 useless extension candidates. Maximal degree in co-relation 238. Up to 44 conditions per place. [2021-03-26 00:43:53,057 INFO L142 LiptonReduction]: Number of co-enabled transitions 116 [2021-03-26 00:43:53,058 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 00:43:53,058 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:43:53,058 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-03-26 00:43:53,059 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 29 transitions, 181 flow [2021-03-26 00:43:53,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:43:53,059 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:43:53,059 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:43:53,059 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-26 00:43:53,059 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:43:53,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:43:53,060 INFO L82 PathProgramCache]: Analyzing trace with hash 223997766, now seen corresponding path program 1 times [2021-03-26 00:43:53,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:43:53,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109365382] [2021-03-26 00:43:53,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:43:53,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:43:53,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:43:53,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:43:53,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:43:53,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:43:53,088 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-26 00:43:53,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 00:43:53,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:43:53,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109365382] [2021-03-26 00:43:53,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:43:53,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 00:43:53,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298654180] [2021-03-26 00:43:53,094 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:43:53,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:43:53,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:43:53,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:43:53,094 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 115 [2021-03-26 00:43:53,095 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 29 transitions, 181 flow. Second operand has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:43:53,095 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:43:53,095 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 115 [2021-03-26 00:43:53,095 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:43:53,115 INFO L129 PetriNetUnfolder]: 24/83 cut-off events. [2021-03-26 00:43:53,115 INFO L130 PetriNetUnfolder]: For 115/171 co-relation queries the response was YES. [2021-03-26 00:43:53,116 INFO L84 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 83 events. 24/83 cut-off events. For 115/171 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 300 event pairs, 2 based on Foata normal form. 21/101 useless extension candidates. Maximal degree in co-relation 289. Up to 54 conditions per place. [2021-03-26 00:43:53,116 INFO L132 encePairwiseOnDemand]: 108/115 looper letters, 5 selfloop transitions, 11 changer transitions 2/32 dead transitions. [2021-03-26 00:43:53,116 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 32 transitions, 234 flow [2021-03-26 00:43:53,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 00:43:53,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 00:43:53,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 450 transitions. [2021-03-26 00:43:53,117 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.782608695652174 [2021-03-26 00:43:53,117 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 450 transitions. [2021-03-26 00:43:53,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 450 transitions. [2021-03-26 00:43:53,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:43:53,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 450 transitions. [2021-03-26 00:43:53,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:43:53,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:43:53,119 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:43:53,119 INFO L185 Difference]: Start difference. First operand has 40 places, 29 transitions, 181 flow. Second operand 5 states and 450 transitions. [2021-03-26 00:43:53,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 32 transitions, 234 flow [2021-03-26 00:43:53,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 32 transitions, 220 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-03-26 00:43:53,120 INFO L241 Difference]: Finished difference. Result has 44 places, 30 transitions, 219 flow [2021-03-26 00:43:53,121 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=219, PETRI_PLACES=44, PETRI_TRANSITIONS=30} [2021-03-26 00:43:53,121 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 14 predicate places. [2021-03-26 00:43:53,121 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:43:53,121 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 30 transitions, 219 flow [2021-03-26 00:43:53,121 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 30 transitions, 219 flow [2021-03-26 00:43:53,121 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 30 transitions, 219 flow [2021-03-26 00:43:53,125 INFO L129 PetriNetUnfolder]: 19/77 cut-off events. [2021-03-26 00:43:53,125 INFO L130 PetriNetUnfolder]: For 90/118 co-relation queries the response was YES. [2021-03-26 00:43:53,126 INFO L84 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 77 events. 19/77 cut-off events. For 90/118 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 293 event pairs, 2 based on Foata normal form. 6/80 useless extension candidates. Maximal degree in co-relation 244. Up to 40 conditions per place. [2021-03-26 00:43:53,126 INFO L142 LiptonReduction]: Number of co-enabled transitions 122 [2021-03-26 00:43:53,185 INFO L154 LiptonReduction]: Checked pairs total: 6 [2021-03-26 00:43:53,185 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 00:43:53,186 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 65 [2021-03-26 00:43:53,186 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 29 transitions, 217 flow [2021-03-26 00:43:53,186 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:43:53,187 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:43:53,187 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:43:53,187 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-26 00:43:53,187 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:43:53,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:43:53,187 INFO L82 PathProgramCache]: Analyzing trace with hash 629261828, now seen corresponding path program 2 times [2021-03-26 00:43:53,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:43:53,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546391558] [2021-03-26 00:43:53,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:43:53,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:43:53,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:43:53,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:43:53,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:43:53,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:43:53,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:43:53,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:43:53,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:43:53,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:43:53,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:43:53,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546391558] [2021-03-26 00:43:53,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:43:53,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 00:43:53,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465383690] [2021-03-26 00:43:53,232 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 00:43:53,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:43:53,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 00:43:53,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-26 00:43:53,233 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 116 [2021-03-26 00:43:53,234 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 29 transitions, 217 flow. Second operand has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:43:53,234 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:43:53,234 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 116 [2021-03-26 00:43:53,234 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:43:53,252 INFO L129 PetriNetUnfolder]: 15/57 cut-off events. [2021-03-26 00:43:53,253 INFO L130 PetriNetUnfolder]: For 158/247 co-relation queries the response was YES. [2021-03-26 00:43:53,253 INFO L84 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 57 events. 15/57 cut-off events. For 158/247 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 179 event pairs, 0 based on Foata normal form. 41/96 useless extension candidates. Maximal degree in co-relation 208. Up to 23 conditions per place. [2021-03-26 00:43:53,253 INFO L132 encePairwiseOnDemand]: 111/116 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2021-03-26 00:43:53,253 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 28 transitions, 221 flow [2021-03-26 00:43:53,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 00:43:53,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 00:43:53,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 470 transitions. [2021-03-26 00:43:53,255 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8103448275862069 [2021-03-26 00:43:53,255 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 470 transitions. [2021-03-26 00:43:53,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 470 transitions. [2021-03-26 00:43:53,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:43:53,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 470 transitions. [2021-03-26 00:43:53,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:43:53,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:43:53,258 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:43:53,258 INFO L185 Difference]: Start difference. First operand has 43 places, 29 transitions, 217 flow. Second operand 5 states and 470 transitions. [2021-03-26 00:43:53,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 28 transitions, 221 flow [2021-03-26 00:43:53,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 28 transitions, 204 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-03-26 00:43:53,259 INFO L241 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2021-03-26 00:43:53,259 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2021-03-26 00:43:53,259 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 12 predicate places. [2021-03-26 00:43:53,259 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:43:53,259 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 42 places, 0 transitions, 0 flow [2021-03-26 00:43:53,260 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 42 places, 0 transitions, 0 flow [2021-03-26 00:43:53,260 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-26 00:43:53,260 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-26 00:43:53,260 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:43:53,260 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. [2021-03-26 00:43:53,260 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-26 00:43:53,260 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 00:43:53,260 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:43:53,260 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-26 00:43:53,261 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-26 00:43:53,261 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:43:53,261 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-26 00:43:53,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.03 12:43:53 BasicIcfg [2021-03-26 00:43:53,263 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-26 00:43:53,264 INFO L168 Benchmark]: Toolchain (without parser) took 3941.10 ms. Allocated memory was 255.9 MB in the beginning and 459.3 MB in the end (delta: 203.4 MB). Free memory was 234.7 MB in the beginning and 251.1 MB in the end (delta: -16.4 MB). Peak memory consumption was 185.5 MB. Max. memory is 16.0 GB. [2021-03-26 00:43:53,264 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 00:43:53,265 INFO L168 Benchmark]: CACSL2BoogieTranslator took 384.30 ms. Allocated memory was 255.9 MB in the beginning and 381.7 MB in the end (delta: 125.8 MB). Free memory was 234.7 MB in the beginning and 345.9 MB in the end (delta: -111.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-26 00:43:53,265 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.23 ms. Allocated memory is still 381.7 MB. Free memory was 345.9 MB in the beginning and 343.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-26 00:43:53,265 INFO L168 Benchmark]: Boogie Preprocessor took 25.71 ms. Allocated memory is still 381.7 MB. Free memory was 343.8 MB in the beginning and 343.2 MB in the end (delta: 650.9 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 00:43:53,265 INFO L168 Benchmark]: RCFGBuilder took 314.62 ms. Allocated memory is still 381.7 MB. Free memory was 342.4 MB in the beginning and 321.5 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-03-26 00:43:53,266 INFO L168 Benchmark]: TraceAbstraction took 3185.57 ms. Allocated memory was 381.7 MB in the beginning and 459.3 MB in the end (delta: 77.6 MB). Free memory was 320.7 MB in the beginning and 251.1 MB in the end (delta: 69.7 MB). Peak memory consumption was 148.7 MB. Max. memory is 16.0 GB. [2021-03-26 00:43:53,267 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 384.30 ms. Allocated memory was 255.9 MB in the beginning and 381.7 MB in the end (delta: 125.8 MB). Free memory was 234.7 MB in the beginning and 345.9 MB in the end (delta: -111.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 27.23 ms. Allocated memory is still 381.7 MB. Free memory was 345.9 MB in the beginning and 343.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 25.71 ms. Allocated memory is still 381.7 MB. Free memory was 343.8 MB in the beginning and 343.2 MB in the end (delta: 650.9 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 314.62 ms. Allocated memory is still 381.7 MB. Free memory was 342.4 MB in the beginning and 321.5 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3185.57 ms. Allocated memory was 381.7 MB in the beginning and 459.3 MB in the end (delta: 77.6 MB). Free memory was 320.7 MB in the beginning and 251.1 MB in the end (delta: 69.7 MB). Peak memory consumption was 148.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1560.9ms, 67 PlacesBefore, 30 PlacesAfterwards, 58 TransitionsBefore, 20 TransitionsAfterwards, 804 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 38 TotalNumberOfCompositions, 958 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 677, positive: 643, positive conditional: 643, positive unconditional: 0, negative: 34, negative conditional: 34, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 553, positive: 532, positive conditional: 0, positive unconditional: 532, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 553, positive: 532, positive conditional: 0, positive unconditional: 532, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 553, positive: 527, positive conditional: 0, positive unconditional: 527, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 26, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 92, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 73, negative conditional: 0, negative unconditional: 73, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 677, positive: 111, positive conditional: 111, positive unconditional: 0, negative: 13, negative conditional: 13, negative unconditional: 0, unknown: 553, unknown conditional: 553, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 34, Positive cache size: 27, Positive conditional cache size: 27, Positive unconditional cache size: 0, Negative cache size: 7, Negative conditional cache size: 7, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 270.6ms, 32 PlacesBefore, 29 PlacesAfterwards, 22 TransitionsBefore, 19 TransitionsAfterwards, 128 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 119 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 66, positive: 56, positive conditional: 56, positive unconditional: 0, negative: 10, negative conditional: 10, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 33, positive: 28, positive conditional: 9, positive unconditional: 19, negative: 5, negative conditional: 1, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 33, positive: 28, positive conditional: 9, positive unconditional: 19, negative: 5, negative conditional: 1, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 33, positive: 25, positive conditional: 0, positive unconditional: 25, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 8, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 5, negative conditional: 1, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 27, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 20, negative conditional: 7, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 66, positive: 28, positive conditional: 28, positive unconditional: 0, negative: 5, negative conditional: 5, negative unconditional: 0, unknown: 33, unknown conditional: 33, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 46, Positive cache size: 36, Positive conditional cache size: 36, Positive unconditional cache size: 0, Negative cache size: 10, Negative conditional cache size: 10, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 400.2ms, 35 PlacesBefore, 34 PlacesAfterwards, 30 TransitionsBefore, 29 TransitionsAfterwards, 148 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 194 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 166, positive: 152, positive conditional: 152, positive unconditional: 0, negative: 14, negative conditional: 14, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 20, positive: 19, positive conditional: 8, positive unconditional: 11, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 20, positive: 19, positive conditional: 8, positive unconditional: 11, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 20, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 6, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 166, positive: 133, positive conditional: 133, positive unconditional: 0, negative: 13, negative conditional: 13, negative unconditional: 0, unknown: 20, unknown conditional: 20, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 55, Positive conditional cache size: 55, Positive unconditional cache size: 0, Negative cache size: 11, Negative conditional cache size: 11, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.4ms, 40 PlacesBefore, 40 PlacesAfterwards, 22 TransitionsBefore, 22 TransitionsAfterwards, 110 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 46 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 40, positive: 36, positive conditional: 36, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 15, positive: 15, positive conditional: 7, positive unconditional: 8, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 15, positive: 15, positive conditional: 7, positive unconditional: 8, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 15, positive: 15, positive conditional: 0, positive unconditional: 15, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 40, positive: 21, positive conditional: 21, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 15, unknown conditional: 15, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 81, Positive cache size: 70, Positive conditional cache size: 70, Positive unconditional cache size: 0, Negative cache size: 11, Negative conditional cache size: 11, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.7ms, 37 PlacesBefore, 37 PlacesAfterwards, 23 TransitionsBefore, 23 TransitionsAfterwards, 114 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 40 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 35, positive: 31, positive conditional: 31, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 14, positive: 14, positive conditional: 9, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 14, positive: 14, positive conditional: 9, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 14, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 35, positive: 17, positive conditional: 17, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 14, unknown conditional: 14, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 95, Positive cache size: 84, Positive conditional cache size: 84, Positive unconditional cache size: 0, Negative cache size: 11, Negative conditional cache size: 11, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.4ms, 39 PlacesBefore, 39 PlacesAfterwards, 26 TransitionsBefore, 26 TransitionsAfterwards, 126 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 95, Positive cache size: 84, Positive conditional cache size: 84, Positive unconditional cache size: 0, Negative cache size: 11, Negative conditional cache size: 11, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.0ms, 40 PlacesBefore, 40 PlacesAfterwards, 29 TransitionsBefore, 29 TransitionsAfterwards, 116 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 95, Positive cache size: 84, Positive conditional cache size: 84, Positive unconditional cache size: 0, Negative cache size: 11, Negative conditional cache size: 11, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 64.4ms, 44 PlacesBefore, 43 PlacesAfterwards, 30 TransitionsBefore, 29 TransitionsAfterwards, 122 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 6 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 6, 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: 6, positive: 6, positive conditional: 5, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 5, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 6, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 6, unknown conditional: 6, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 79, Positive cache size: 73, Positive conditional cache size: 73, Positive unconditional cache size: 0, Negative cache size: 6, Negative conditional cache size: 6, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.4ms, 42 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 79, Positive cache size: 73, Positive conditional cache size: 73, Positive unconditional cache size: 0, Negative cache size: 6, Negative conditional cache size: 6, Negative unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3116.7ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 270.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1609.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 43 SDtfs, 27 SDslu, 24 SDs, 0 SdLazy, 85 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 68.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 73.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=219occurred in iteration=7, InterpolantAutomatonStates: 35, 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: 11.6ms SsaConstructionTime, 93.6ms SatisfiabilityAnalysisTime, 256.7ms InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 89 ConstructedInterpolants, 0 QuantifiedInterpolants, 407 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...