/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-RepeatedSemanticLbeWithDisjunctivePredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe022_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-11 16:20:33,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-11 16:20:33,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-11 16:20:33,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-11 16:20:33,556 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-11 16:20:33,558 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-11 16:20:33,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-11 16:20:33,563 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-11 16:20:33,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-11 16:20:33,568 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-11 16:20:33,568 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-11 16:20:33,569 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-11 16:20:33,569 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-11 16:20:33,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-11 16:20:33,572 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-11 16:20:33,572 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-11 16:20:33,574 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-11 16:20:33,575 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-11 16:20:33,576 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-11 16:20:33,580 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-11 16:20:33,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-11 16:20:33,582 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-11 16:20:33,583 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-11 16:20:33,583 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-11 16:20:33,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-11 16:20:33,588 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-11 16:20:33,588 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-11 16:20:33,589 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-11 16:20:33,589 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-11 16:20:33,590 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-11 16:20:33,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-11 16:20:33,590 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-11 16:20:33,591 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-11 16:20:33,592 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-11 16:20:33,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-11 16:20:33,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-11 16:20:33,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-11 16:20:33,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-11 16:20:33,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-11 16:20:33,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-11 16:20:33,594 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-11 16:20:33,598 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-RepeatedSemanticLbeWithDisjunctivePredicates.epf [2021-06-11 16:20:33,622 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-11 16:20:33,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-11 16:20:33,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-11 16:20:33,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-11 16:20:33,624 INFO L138 SettingsManager]: * Use SBE=true [2021-06-11 16:20:33,624 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-11 16:20:33,624 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-11 16:20:33,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-11 16:20:33,625 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-11 16:20:33,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-11 16:20:33,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-11 16:20:33,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-11 16:20:33,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-11 16:20:33,625 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-11 16:20:33,625 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-11 16:20:33,626 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-11 16:20:33,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-11 16:20:33,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-11 16:20:33,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-11 16:20:33,626 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-11 16:20:33,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-11 16:20:33,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-11 16:20:33,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-11 16:20:33,626 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-11 16:20:33,626 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-11 16:20:33,626 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-11 16:20:33,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-11 16:20:33,627 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES_DISJUNCTIVE [2021-06-11 16:20:33,627 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-11 16:20:33,627 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-11 16:20:33,627 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-11 16:20:33,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-11 16:20:33,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-11 16:20:33,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-11 16:20:33,855 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-11 16:20:33,855 INFO L275 PluginConnector]: CDTParser initialized [2021-06-11 16:20:33,856 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe022_tso.opt.i [2021-06-11 16:20:33,908 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34a921003/5086fc0548764f4d849d04c75b362110/FLAG40ace5027 [2021-06-11 16:20:34,302 INFO L306 CDTParser]: Found 1 translation units. [2021-06-11 16:20:34,302 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe022_tso.opt.i [2021-06-11 16:20:34,315 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34a921003/5086fc0548764f4d849d04c75b362110/FLAG40ace5027 [2021-06-11 16:20:34,328 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34a921003/5086fc0548764f4d849d04c75b362110 [2021-06-11 16:20:34,330 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-11 16:20:34,331 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-11 16:20:34,333 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-11 16:20:34,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-11 16:20:34,336 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-11 16:20:34,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.06 04:20:34" (1/1) ... [2021-06-11 16:20:34,337 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49cabce3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 04:20:34, skipping insertion in model container [2021-06-11 16:20:34,337 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.06 04:20:34" (1/1) ... [2021-06-11 16:20:34,341 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-11 16:20:34,380 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-11 16:20:34,524 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/safe022_tso.opt.i[949,962] [2021-06-11 16:20:34,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-11 16:20:34,661 INFO L203 MainTranslator]: Completed pre-run [2021-06-11 16:20:34,675 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/safe022_tso.opt.i[949,962] [2021-06-11 16:20:34,701 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-11 16:20:34,738 INFO L208 MainTranslator]: Completed translation [2021-06-11 16:20:34,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 04:20:34 WrapperNode [2021-06-11 16:20:34,738 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-11 16:20:34,739 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-11 16:20:34,739 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-11 16:20:34,739 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-11 16:20:34,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 04:20:34" (1/1) ... [2021-06-11 16:20:34,762 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 04:20:34" (1/1) ... [2021-06-11 16:20:34,773 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-11 16:20:34,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-11 16:20:34,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-11 16:20:34,773 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-11 16:20:34,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 04:20:34" (1/1) ... [2021-06-11 16:20:34,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 04:20:34" (1/1) ... [2021-06-11 16:20:34,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 04:20:34" (1/1) ... [2021-06-11 16:20:34,783 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 04:20:34" (1/1) ... [2021-06-11 16:20:34,798 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 04:20:34" (1/1) ... [2021-06-11 16:20:34,799 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 04:20:34" (1/1) ... [2021-06-11 16:20:34,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 04:20:34" (1/1) ... [2021-06-11 16:20:34,802 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-11 16:20:34,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-11 16:20:34,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-11 16:20:34,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-11 16:20:34,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 04:20:34" (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 [2021-06-11 16:20:34,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-11 16:20:34,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-11 16:20:34,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-11 16:20:34,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-11 16:20:34,856 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-11 16:20:34,856 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-11 16:20:34,856 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-11 16:20:34,856 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-11 16:20:34,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-11 16:20:34,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-11 16:20:34,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-11 16:20:34,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-11 16:20:34,858 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-11 16:20:35,110 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-11 16:20:35,111 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-11 16:20:35,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 04:20:35 BoogieIcfgContainer [2021-06-11 16:20:35,112 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-11 16:20:35,113 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-11 16:20:35,113 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-11 16:20:35,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-11 16:20:35,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.06 04:20:34" (1/3) ... [2021-06-11 16:20:35,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fd37bba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.06 04:20:35, skipping insertion in model container [2021-06-11 16:20:35,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 04:20:34" (2/3) ... [2021-06-11 16:20:35,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fd37bba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.06 04:20:35, skipping insertion in model container [2021-06-11 16:20:35,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 04:20:35" (3/3) ... [2021-06-11 16:20:35,116 INFO L111 eAbstractionObserver]: Analyzing ICFG safe022_tso.opt.i [2021-06-11 16:20:35,120 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-11 16:20:35,123 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-11 16:20:35,123 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-11 16:20:35,137 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:20:35,138 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:20:35,138 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:20:35,138 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:20:35,138 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:20:35,138 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:20:35,138 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:20:35,138 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:20:35,139 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:20:35,139 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:20:35,139 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:20:35,139 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:20:35,139 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:20:35,139 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:20:35,139 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:20:35,139 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:20:35,140 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:20:35,140 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:20:35,140 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:20:35,140 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:20:35,140 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:20:35,140 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:20:35,140 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:20:35,140 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:20:35,141 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:20:35,142 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:20:35,142 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:20:35,142 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:20:35,145 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:20:35,145 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:20:35,145 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:20:35,145 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 16:20:35,146 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 16:20:35,158 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-11 16:20:35,177 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 16:20:35,178 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 16:20:35,178 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 16:20:35,178 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 16:20:35,178 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 16:20:35,178 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 16:20:35,178 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 16:20:35,178 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 16:20:35,187 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 61 transitions, 132 flow [2021-06-11 16:20:35,219 INFO L129 PetriNetUnfolder]: 2/59 cut-off events. [2021-06-11 16:20:35,219 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 16:20:35,222 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 59 events. 2/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2021-06-11 16:20:35,222 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 61 transitions, 132 flow [2021-06-11 16:20:35,225 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 49 transitions, 104 flow [2021-06-11 16:20:35,226 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 16:20:35,234 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 49 transitions, 104 flow [2021-06-11 16:20:35,237 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 49 transitions, 104 flow [2021-06-11 16:20:35,238 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 55 places, 49 transitions, 104 flow [2021-06-11 16:20:35,257 INFO L129 PetriNetUnfolder]: 1/49 cut-off events. [2021-06-11 16:20:35,257 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 16:20:35,257 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 49 events. 1/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 30 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2021-06-11 16:20:35,259 INFO L151 LiptonReduction]: Number of co-enabled transitions 456 [2021-06-11 16:20:35,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:20:35,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 16:20:35,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:20:35,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 16:20:35,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 16:20:35,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:20:35,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 16:20:35,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:20:35,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 16:20:35,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:20:35,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 16:20:35,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:20:35,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 16:20:35,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:20:35,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 16:20:35,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:20:35,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 16:20:35,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:20:35,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 16:20:35,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:20:35,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 16:20:35,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:20:35,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 16:20:35,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:20:35,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 16:20:35,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:20:35,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 16:20:35,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:20:35,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 16:20:35,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 16:20:35,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:20:35,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 16:20:35,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:20:35,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 16:20:35,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:20:35,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 16:20:35,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:20:35,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 16:20:35,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:20:35,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 16:20:35,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 16:20:35,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:20:35,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 16:20:36,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:20:36,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 16:20:36,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:20:36,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 16:20:36,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:20:36,112 INFO L147 QuantifierPusher]: treesize reduction 15, result has 6.3 percent of original size 1 [2021-06-11 16:20:36,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:20:36,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 16:20:36,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:20:36,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 16:20:36,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:20:36,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 16:20:36,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:20:36,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-11 16:20:36,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-06-11 16:20:36,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:20:36,347 INFO L147 QuantifierPusher]: treesize reduction 17, result has 19.0 percent of original size 4 [2021-06-11 16:20:36,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:20:36,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 16:20:36,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:20:36,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 16:20:36,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 16:20:36,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:20:36,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 16:20:36,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:20:36,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 16:20:36,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 16:20:36,751 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-06-11 16:20:36,927 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-06-11 16:20:37,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:20:37,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 16:20:37,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:20:37,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 16:20:37,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 16:20:37,024 INFO L163 LiptonReduction]: Checked pairs total: 858 [2021-06-11 16:20:37,024 INFO L165 LiptonReduction]: Total number of compositions: 40 [2021-06-11 16:20:37,027 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1802 [2021-06-11 16:20:37,034 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2021-06-11 16:20:37,034 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 16:20:37,034 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 16:20:37,034 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-06-11 16:20:37,034 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-11 16:20:37,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 16:20:37,038 INFO L82 PathProgramCache]: Analyzing trace with hash 203969178, now seen corresponding path program 1 times [2021-06-11 16:20:37,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 16:20:37,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176636619] [2021-06-11 16:20:37,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 16:20:37,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 16:20:37,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:20:37,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 16:20:37,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 16:20:37,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176636619] [2021-06-11 16:20:37,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 16:20:37,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 16:20:37,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34293946] [2021-06-11 16:20:37,132 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-11 16:20:37,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 16:20:37,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-11 16:20:37,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-11 16:20:37,141 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 101 [2021-06-11 16:20:37,142 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 32 flow. Second operand has 2 states, 2 states have (on average 94.5) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 16:20:37,142 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 16:20:37,142 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 101 [2021-06-11 16:20:37,142 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 16:20:37,146 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-06-11 16:20:37,146 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 16:20:37,146 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20 conditions, 12 events. 0/12 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 9 event pairs, 0 based on Foata normal form. 1/13 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-06-11 16:20:37,147 INFO L132 encePairwiseOnDemand]: 100/101 looper letters, 0 selfloop transitions, 0 changer transitions 0/12 dead transitions. [2021-06-11 16:20:37,147 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 12 transitions, 30 flow [2021-06-11 16:20:37,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-11 16:20:37,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-06-11 16:20:37,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 189 transitions. [2021-06-11 16:20:37,153 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9356435643564357 [2021-06-11 16:20:37,154 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 189 transitions. [2021-06-11 16:20:37,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 189 transitions. [2021-06-11 16:20:37,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 16:20:37,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 189 transitions. [2021-06-11 16:20:37,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 94.5) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 16:20:37,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 16:20:37,182 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 16:20:37,184 INFO L185 Difference]: Start difference. First operand has 19 places, 13 transitions, 32 flow. Second operand 2 states and 189 transitions. [2021-06-11 16:20:37,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 12 transitions, 30 flow [2021-06-11 16:20:37,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 12 transitions, 28 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-11 16:20:37,186 INFO L241 Difference]: Finished difference. Result has 18 places, 12 transitions, 28 flow [2021-06-11 16:20:37,187 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=28, PETRI_PLACES=18, PETRI_TRANSITIONS=12} [2021-06-11 16:20:37,187 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, -1 predicate places. [2021-06-11 16:20:37,187 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 16:20:37,188 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 18 places, 12 transitions, 28 flow [2021-06-11 16:20:37,188 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 18 places, 12 transitions, 28 flow [2021-06-11 16:20:37,188 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 12 transitions, 28 flow [2021-06-11 16:20:37,190 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-06-11 16:20:37,190 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 16:20:37,190 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17 conditions, 12 events. 0/12 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 9 event pairs, 0 based on Foata normal form. 0/12 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-06-11 16:20:37,190 INFO L151 LiptonReduction]: Number of co-enabled transitions 54 [2021-06-11 16:20:37,191 INFO L163 LiptonReduction]: Checked pairs total: 60 [2021-06-11 16:20:37,191 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 16:20:37,191 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4 [2021-06-11 16:20:37,192 INFO L480 AbstractCegarLoop]: Abstraction has has 17 places, 12 transitions, 28 flow [2021-06-11 16:20:37,192 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 94.5) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 16:20:37,192 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 16:20:37,192 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-06-11 16:20:37,192 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-11 16:20:37,192 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-11 16:20:37,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 16:20:37,193 INFO L82 PathProgramCache]: Analyzing trace with hash 2028076998, now seen corresponding path program 1 times [2021-06-11 16:20:37,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 16:20:37,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037350004] [2021-06-11 16:20:37,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 16:20:37,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 16:20:37,241 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-06-11 16:20:37,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-11 16:20:37,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 16:20:37,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037350004] [2021-06-11 16:20:37,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 16:20:37,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 16:20:37,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30450433] [2021-06-11 16:20:37,248 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 16:20:37,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 16:20:37,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 16:20:37,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 16:20:37,249 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 101 [2021-06-11 16:20:37,250 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 12 transitions, 28 flow. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 16:20:37,250 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 16:20:37,250 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 101 [2021-06-11 16:20:37,250 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 16:20:37,257 INFO L129 PetriNetUnfolder]: 1/14 cut-off events. [2021-06-11 16:20:37,257 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 16:20:37,257 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 14 events. 1/14 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs, 1 based on Foata normal form. 1/15 useless extension candidates. Maximal degree in co-relation 19. Up to 6 conditions per place. [2021-06-11 16:20:37,258 INFO L132 encePairwiseOnDemand]: 98/101 looper letters, 2 selfloop transitions, 2 changer transitions 0/12 dead transitions. [2021-06-11 16:20:37,258 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 12 transitions, 36 flow [2021-06-11 16:20:37,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 16:20:37,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 16:20:37,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 239 transitions. [2021-06-11 16:20:37,259 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7887788778877888 [2021-06-11 16:20:37,259 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 239 transitions. [2021-06-11 16:20:37,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 239 transitions. [2021-06-11 16:20:37,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 16:20:37,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 239 transitions. [2021-06-11 16:20:37,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 16:20:37,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 16:20:37,262 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 16:20:37,262 INFO L185 Difference]: Start difference. First operand has 17 places, 12 transitions, 28 flow. Second operand 3 states and 239 transitions. [2021-06-11 16:20:37,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 12 transitions, 36 flow [2021-06-11 16:20:37,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 12 transitions, 36 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-11 16:20:37,263 INFO L241 Difference]: Finished difference. Result has 20 places, 12 transitions, 36 flow [2021-06-11 16:20:37,263 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=20, PETRI_TRANSITIONS=12} [2021-06-11 16:20:37,264 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, 1 predicate places. [2021-06-11 16:20:37,264 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 16:20:37,264 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 20 places, 12 transitions, 36 flow [2021-06-11 16:20:37,264 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 20 places, 12 transitions, 36 flow [2021-06-11 16:20:37,264 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 20 places, 12 transitions, 36 flow [2021-06-11 16:20:37,266 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-06-11 16:20:37,266 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 16:20:37,266 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23 conditions, 12 events. 0/12 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 0 based on Foata normal form. 0/12 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-06-11 16:20:37,266 INFO L151 LiptonReduction]: Number of co-enabled transitions 52 [2021-06-11 16:20:37,267 INFO L163 LiptonReduction]: Checked pairs total: 44 [2021-06-11 16:20:37,268 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 16:20:37,268 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4 [2021-06-11 16:20:37,268 INFO L480 AbstractCegarLoop]: Abstraction has has 20 places, 12 transitions, 36 flow [2021-06-11 16:20:37,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 16:20:37,269 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 16:20:37,269 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-06-11 16:20:37,269 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-11 16:20:37,269 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-11 16:20:37,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 16:20:37,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1554122850, now seen corresponding path program 1 times [2021-06-11 16:20:37,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 16:20:37,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642151998] [2021-06-11 16:20:37,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 16:20:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 16:20:37,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:20:37,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 16:20:37,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:20:37,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 16:20:37,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 16:20:37,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642151998] [2021-06-11 16:20:37,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 16:20:37,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-11 16:20:37,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062100273] [2021-06-11 16:20:37,302 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-11 16:20:37,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 16:20:37,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-11 16:20:37,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-11 16:20:37,303 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 101 [2021-06-11 16:20:37,304 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 12 transitions, 36 flow. Second operand has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 16:20:37,304 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 16:20:37,304 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 101 [2021-06-11 16:20:37,304 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 16:20:37,323 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2021-06-11 16:20:37,324 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-06-11 16:20:37,324 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 17 events. 0/17 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 25 event pairs, 0 based on Foata normal form. 2/19 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-06-11 16:20:37,324 INFO L132 encePairwiseOnDemand]: 97/101 looper letters, 1 selfloop transitions, 3 changer transitions 1/13 dead transitions. [2021-06-11 16:20:37,324 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 13 transitions, 51 flow [2021-06-11 16:20:37,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-11 16:20:37,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-11 16:20:37,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 315 transitions. [2021-06-11 16:20:37,326 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7797029702970297 [2021-06-11 16:20:37,326 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 315 transitions. [2021-06-11 16:20:37,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 315 transitions. [2021-06-11 16:20:37,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 16:20:37,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 315 transitions. [2021-06-11 16:20:37,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 16:20:37,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 101.0) internal successors, (505), 5 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 16:20:37,329 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 101.0) internal successors, (505), 5 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 16:20:37,329 INFO L185 Difference]: Start difference. First operand has 20 places, 12 transitions, 36 flow. Second operand 4 states and 315 transitions. [2021-06-11 16:20:37,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 13 transitions, 51 flow [2021-06-11 16:20:37,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 13 transitions, 45 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-11 16:20:37,330 INFO L241 Difference]: Finished difference. Result has 23 places, 12 transitions, 46 flow [2021-06-11 16:20:37,330 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=46, PETRI_PLACES=23, PETRI_TRANSITIONS=12} [2021-06-11 16:20:37,330 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, 4 predicate places. [2021-06-11 16:20:37,330 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 16:20:37,330 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 23 places, 12 transitions, 46 flow [2021-06-11 16:20:37,330 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 23 places, 12 transitions, 46 flow [2021-06-11 16:20:37,330 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 23 places, 12 transitions, 46 flow [2021-06-11 16:20:37,332 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-06-11 16:20:37,332 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-06-11 16:20:37,332 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 12 events. 0/12 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 9 event pairs, 0 based on Foata normal form. 0/12 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-06-11 16:20:37,333 INFO L151 LiptonReduction]: Number of co-enabled transitions 36 [2021-06-11 16:20:37,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:20:37,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 16:20:37,356 INFO L163 LiptonReduction]: Checked pairs total: 26 [2021-06-11 16:20:37,356 INFO L165 LiptonReduction]: Total number of compositions: 1 [2021-06-11 16:20:37,357 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 27 [2021-06-11 16:20:37,358 INFO L480 AbstractCegarLoop]: Abstraction has has 22 places, 11 transitions, 44 flow [2021-06-11 16:20:37,359 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 16:20:37,359 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 16:20:37,359 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 16:20:37,359 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-11 16:20:37,359 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-11 16:20:37,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 16:20:37,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1136490401, now seen corresponding path program 1 times [2021-06-11 16:20:37,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 16:20:37,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998218401] [2021-06-11 16:20:37,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 16:20:37,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 16:20:37,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:20:37,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 16:20:37,430 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-06-11 16:20:37,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 16:20:37,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 16:20:37,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998218401] [2021-06-11 16:20:37,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 16:20:37,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-11 16:20:37,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624838214] [2021-06-11 16:20:37,437 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-11 16:20:37,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 16:20:37,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-11 16:20:37,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-11 16:20:37,440 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 102 [2021-06-11 16:20:37,441 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 11 transitions, 44 flow. Second operand has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 16:20:37,441 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 16:20:37,441 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 102 [2021-06-11 16:20:37,441 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 16:20:37,466 INFO L129 PetriNetUnfolder]: 6/26 cut-off events. [2021-06-11 16:20:37,466 INFO L130 PetriNetUnfolder]: For 31/33 co-relation queries the response was YES. [2021-06-11 16:20:37,466 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 26 events. 6/26 cut-off events. For 31/33 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 51 event pairs, 2 based on Foata normal form. 6/31 useless extension candidates. Maximal degree in co-relation 59. Up to 15 conditions per place. [2021-06-11 16:20:37,467 INFO L132 encePairwiseOnDemand]: 97/102 looper letters, 4 selfloop transitions, 3 changer transitions 5/18 dead transitions. [2021-06-11 16:20:37,469 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 18 transitions, 82 flow [2021-06-11 16:20:37,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-11 16:20:37,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-11 16:20:37,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 394 transitions. [2021-06-11 16:20:37,472 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7725490196078432 [2021-06-11 16:20:37,472 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 394 transitions. [2021-06-11 16:20:37,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 394 transitions. [2021-06-11 16:20:37,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 16:20:37,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 394 transitions. [2021-06-11 16:20:37,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 78.8) internal successors, (394), 5 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 16:20:37,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 16:20:37,477 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 16:20:37,477 INFO L185 Difference]: Start difference. First operand has 22 places, 11 transitions, 44 flow. Second operand 5 states and 394 transitions. [2021-06-11 16:20:37,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 18 transitions, 82 flow [2021-06-11 16:20:37,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 18 transitions, 70 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-06-11 16:20:37,478 INFO L241 Difference]: Finished difference. Result has 25 places, 13 transitions, 59 flow [2021-06-11 16:20:37,478 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=59, PETRI_PLACES=25, PETRI_TRANSITIONS=13} [2021-06-11 16:20:37,478 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, 6 predicate places. [2021-06-11 16:20:37,479 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 16:20:37,479 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 25 places, 13 transitions, 59 flow [2021-06-11 16:20:37,479 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 25 places, 13 transitions, 59 flow [2021-06-11 16:20:37,479 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 23 places, 13 transitions, 59 flow [2021-06-11 16:20:37,483 INFO L129 PetriNetUnfolder]: 5/21 cut-off events. [2021-06-11 16:20:37,483 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2021-06-11 16:20:37,483 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 21 events. 5/21 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 27 event pairs, 2 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 51. Up to 12 conditions per place. [2021-06-11 16:20:37,484 INFO L151 LiptonReduction]: Number of co-enabled transitions 18 [2021-06-11 16:20:37,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:20:37,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 16:20:37,531 INFO L163 LiptonReduction]: Checked pairs total: 14 [2021-06-11 16:20:37,531 INFO L165 LiptonReduction]: Total number of compositions: 1 [2021-06-11 16:20:37,531 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 53 [2021-06-11 16:20:37,534 INFO L480 AbstractCegarLoop]: Abstraction has has 23 places, 13 transitions, 60 flow [2021-06-11 16:20:37,534 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 16:20:37,534 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 16:20:37,534 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 16:20:37,534 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-11 16:20:37,534 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-11 16:20:37,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 16:20:37,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1151336177, now seen corresponding path program 1 times [2021-06-11 16:20:37,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 16:20:37,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084547963] [2021-06-11 16:20:37,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 16:20:37,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 16:20:37,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:20:37,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 16:20:37,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:20:37,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 16:20:37,600 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-06-11 16:20:37,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 16:20:37,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 16:20:37,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084547963] [2021-06-11 16:20:37,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 16:20:37,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 16:20:37,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330894521] [2021-06-11 16:20:37,607 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-11 16:20:37,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 16:20:37,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-11 16:20:37,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-11 16:20:37,617 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 103 [2021-06-11 16:20:37,618 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 13 transitions, 60 flow. Second operand has 5 states, 5 states have (on average 76.8) internal successors, (384), 5 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 16:20:37,618 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 16:20:37,618 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 103 [2021-06-11 16:20:37,618 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 16:20:37,640 INFO L129 PetriNetUnfolder]: 2/19 cut-off events. [2021-06-11 16:20:37,640 INFO L130 PetriNetUnfolder]: For 23/26 co-relation queries the response was YES. [2021-06-11 16:20:37,640 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 19 events. 2/19 cut-off events. For 23/26 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 21 event pairs, 0 based on Foata normal form. 4/22 useless extension candidates. Maximal degree in co-relation 52. Up to 10 conditions per place. [2021-06-11 16:20:37,640 INFO L132 encePairwiseOnDemand]: 97/103 looper letters, 2 selfloop transitions, 5 changer transitions 3/16 dead transitions. [2021-06-11 16:20:37,640 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 16 transitions, 96 flow [2021-06-11 16:20:37,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-11 16:20:37,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-06-11 16:20:37,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 468 transitions. [2021-06-11 16:20:37,646 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7572815533980582 [2021-06-11 16:20:37,646 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 468 transitions. [2021-06-11 16:20:37,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 468 transitions. [2021-06-11 16:20:37,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 16:20:37,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 468 transitions. [2021-06-11 16:20:37,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 78.0) internal successors, (468), 6 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 16:20:37,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 103.0) internal successors, (721), 7 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 16:20:37,648 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 103.0) internal successors, (721), 7 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 16:20:37,648 INFO L185 Difference]: Start difference. First operand has 23 places, 13 transitions, 60 flow. Second operand 6 states and 468 transitions. [2021-06-11 16:20:37,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 16 transitions, 96 flow [2021-06-11 16:20:37,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 16 transitions, 83 flow, removed 5 selfloop flow, removed 2 redundant places. [2021-06-11 16:20:37,650 INFO L241 Difference]: Finished difference. Result has 29 places, 13 transitions, 71 flow [2021-06-11 16:20:37,650 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=71, PETRI_PLACES=29, PETRI_TRANSITIONS=13} [2021-06-11 16:20:37,650 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, 10 predicate places. [2021-06-11 16:20:37,651 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 16:20:37,651 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 13 transitions, 71 flow [2021-06-11 16:20:37,651 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 13 transitions, 71 flow [2021-06-11 16:20:37,651 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 27 places, 13 transitions, 71 flow [2021-06-11 16:20:37,653 INFO L129 PetriNetUnfolder]: 1/15 cut-off events. [2021-06-11 16:20:37,653 INFO L130 PetriNetUnfolder]: For 13/14 co-relation queries the response was YES. [2021-06-11 16:20:37,653 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 15 events. 1/15 cut-off events. For 13/14 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 0 based on Foata normal form. 1/15 useless extension candidates. Maximal degree in co-relation 36. Up to 6 conditions per place. [2021-06-11 16:20:37,653 INFO L151 LiptonReduction]: Number of co-enabled transitions 8 [2021-06-11 16:20:37,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:20:37,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 16:20:37,700 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 16:20:37,701 INFO L165 LiptonReduction]: Total number of compositions: 2 [2021-06-11 16:20:37,701 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 50 [2021-06-11 16:20:37,701 INFO L480 AbstractCegarLoop]: Abstraction has has 26 places, 12 transitions, 69 flow [2021-06-11 16:20:37,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 76.8) internal successors, (384), 5 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 16:20:37,702 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 16:20:37,702 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 16:20:37,702 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-11 16:20:37,702 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-11 16:20:37,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 16:20:37,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1359274290, now seen corresponding path program 1 times [2021-06-11 16:20:37,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 16:20:37,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226102012] [2021-06-11 16:20:37,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 16:20:37,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 16:20:37,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:20:37,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 16:20:37,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:20:37,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 16:20:37,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 16:20:37,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 16:20:37,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 16:20:37,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226102012] [2021-06-11 16:20:37,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 16:20:37,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 16:20:37,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854281857] [2021-06-11 16:20:37,725 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-11 16:20:37,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 16:20:37,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-11 16:20:37,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-11 16:20:37,726 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 105 [2021-06-11 16:20:37,726 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 12 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 16:20:37,726 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 16:20:37,727 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 105 [2021-06-11 16:20:37,727 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 16:20:37,740 INFO L129 PetriNetUnfolder]: 1/12 cut-off events. [2021-06-11 16:20:37,740 INFO L130 PetriNetUnfolder]: For 25/26 co-relation queries the response was YES. [2021-06-11 16:20:37,740 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 12 events. 1/12 cut-off events. For 25/26 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 7 event pairs, 0 based on Foata normal form. 2/13 useless extension candidates. Maximal degree in co-relation 39. Up to 6 conditions per place. [2021-06-11 16:20:37,741 INFO L132 encePairwiseOnDemand]: 100/105 looper letters, 0 selfloop transitions, 0 changer transitions 11/11 dead transitions. [2021-06-11 16:20:37,741 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 11 transitions, 69 flow [2021-06-11 16:20:37,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-11 16:20:37,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-11 16:20:37,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 314 transitions. [2021-06-11 16:20:37,742 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7476190476190476 [2021-06-11 16:20:37,742 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 314 transitions. [2021-06-11 16:20:37,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 314 transitions. [2021-06-11 16:20:37,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 16:20:37,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 314 transitions. [2021-06-11 16:20:37,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 16:20:37,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 105.0) internal successors, (525), 5 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 16:20:37,745 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 105.0) internal successors, (525), 5 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 16:20:37,745 INFO L185 Difference]: Start difference. First operand has 26 places, 12 transitions, 69 flow. Second operand 4 states and 314 transitions. [2021-06-11 16:20:37,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 11 transitions, 69 flow [2021-06-11 16:20:37,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 11 transitions, 57 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-06-11 16:20:37,746 INFO L241 Difference]: Finished difference. Result has 25 places, 0 transitions, 0 flow [2021-06-11 16:20:37,746 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=47, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=25, PETRI_TRANSITIONS=0} [2021-06-11 16:20:37,747 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, 6 predicate places. [2021-06-11 16:20:37,747 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 16:20:37,747 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 25 places, 0 transitions, 0 flow [2021-06-11 16:20:37,747 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 25 places, 0 transitions, 0 flow [2021-06-11 16:20:37,747 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-06-11 16:20:37,747 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-06-11 16:20:37,747 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 16:20:37,747 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. [2021-06-11 16:20:37,747 INFO L151 LiptonReduction]: Number of co-enabled transitions 0 [2021-06-11 16:20:37,747 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 16:20:37,748 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 16:20:37,748 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-06-11 16:20:37,750 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-06-11 16:20:37,750 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 16:20:37,750 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-11 16:20:37,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.06 04:20:37 BasicIcfg [2021-06-11 16:20:37,753 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-11 16:20:37,755 INFO L168 Benchmark]: Toolchain (without parser) took 3422.10 ms. Allocated memory was 350.2 MB in the beginning and 474.0 MB in the end (delta: 123.7 MB). Free memory was 313.8 MB in the beginning and 353.5 MB in the end (delta: -39.8 MB). Peak memory consumption was 86.5 MB. Max. memory is 16.0 GB. [2021-06-11 16:20:37,756 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 350.2 MB. Free memory is still 331.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-11 16:20:37,756 INFO L168 Benchmark]: CACSL2BoogieTranslator took 405.15 ms. Allocated memory is still 350.2 MB. Free memory was 313.5 MB in the beginning and 313.1 MB in the end (delta: 444.3 kB). Peak memory consumption was 9.1 MB. Max. memory is 16.0 GB. [2021-06-11 16:20:37,756 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.70 ms. Allocated memory is still 350.2 MB. Free memory was 313.1 MB in the beginning and 311.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-11 16:20:37,757 INFO L168 Benchmark]: Boogie Preprocessor took 28.61 ms. Allocated memory is still 350.2 MB. Free memory was 311.0 MB in the beginning and 309.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-11 16:20:37,759 INFO L168 Benchmark]: RCFGBuilder took 309.62 ms. Allocated memory is still 350.2 MB. Free memory was 309.9 MB in the beginning and 287.9 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-06-11 16:20:37,760 INFO L168 Benchmark]: TraceAbstraction took 2640.25 ms. Allocated memory was 350.2 MB in the beginning and 474.0 MB in the end (delta: 123.7 MB). Free memory was 287.9 MB in the beginning and 353.5 MB in the end (delta: -65.6 MB). Peak memory consumption was 60.2 MB. Max. memory is 16.0 GB. [2021-06-11 16:20:37,762 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 350.2 MB. Free memory is still 331.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 405.15 ms. Allocated memory is still 350.2 MB. Free memory was 313.5 MB in the beginning and 313.1 MB in the end (delta: 444.3 kB). Peak memory consumption was 9.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 33.70 ms. Allocated memory is still 350.2 MB. Free memory was 313.1 MB in the beginning and 311.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 28.61 ms. Allocated memory is still 350.2 MB. Free memory was 311.0 MB in the beginning and 309.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 309.62 ms. Allocated memory is still 350.2 MB. Free memory was 309.9 MB in the beginning and 287.9 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2640.25 ms. Allocated memory was 350.2 MB in the beginning and 474.0 MB in the end (delta: 123.7 MB). Free memory was 287.9 MB in the beginning and 353.5 MB in the end (delta: -65.6 MB). Peak memory consumption was 60.2 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1787.1ms, 55 PlacesBefore, 19 PlacesAfterwards, 49 TransitionsBefore, 13 TransitionsAfterwards, 456 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 0 ChoiceCompositions, 40 TotalNumberOfCompositions, 858 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 627, positive: 568, positive conditional: 568, positive unconditional: 0, negative: 59, negative conditional: 59, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 627, positive: 568, positive conditional: 0, positive unconditional: 568, negative: 59, negative conditional: 0, negative unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 627, positive: 568, positive conditional: 0, positive unconditional: 568, negative: 59, negative conditional: 0, negative unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 429, positive: 406, positive conditional: 0, positive unconditional: 406, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 429, positive: 404, positive conditional: 0, positive unconditional: 404, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 25, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 71, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 62, negative conditional: 0, negative unconditional: 62, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 627, positive: 162, positive conditional: 0, positive unconditional: 162, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 429, unknown conditional: 0, unknown unconditional: 429] , Statistics on independence cache: Total cache size (in pairs): 429, Positive cache size: 406, Positive conditional cache size: 0, Positive unconditional cache size: 406, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.3ms, 18 PlacesBefore, 17 PlacesAfterwards, 12 TransitionsBefore, 12 TransitionsAfterwards, 54 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 60 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 37, positive: 27, positive conditional: 27, positive unconditional: 0, negative: 10, negative conditional: 10, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 37, positive: 27, positive conditional: 0, positive unconditional: 27, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 37, positive: 27, positive conditional: 0, positive unconditional: 27, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.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: 37, positive: 27, positive conditional: 0, positive unconditional: 27, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 429, Positive cache size: 406, Positive conditional cache size: 0, Positive unconditional cache size: 406, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.6ms, 20 PlacesBefore, 20 PlacesAfterwards, 12 TransitionsBefore, 12 TransitionsAfterwards, 52 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 44 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 19, positive: 12, positive conditional: 12, positive unconditional: 0, negative: 7, negative conditional: 7, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 19, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 19, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , 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: 19, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 430, Positive cache size: 407, Positive conditional cache size: 0, Positive unconditional cache size: 407, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, Eliminated conditions: 4 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 26.2ms, 23 PlacesBefore, 22 PlacesAfterwards, 12 TransitionsBefore, 11 TransitionsAfterwards, 36 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 26 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 15, positive: 9, positive conditional: 9, positive unconditional: 0, negative: 6, negative conditional: 6, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 15, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 15, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , 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: 15, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 432, Positive cache size: 409, Positive conditional cache size: 0, Positive unconditional cache size: 409, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 51.9ms, 25 PlacesBefore, 23 PlacesAfterwards, 13 TransitionsBefore, 13 TransitionsAfterwards, 18 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 14 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 12, positive: 8, positive conditional: 8, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 12, positive: 8, positive conditional: 3, positive unconditional: 5, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 12, positive: 8, positive conditional: 3, positive unconditional: 5, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 1, 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: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , 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: 12, positive: 6, positive conditional: 2, positive unconditional: 4, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 2, unknown conditional: 1, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 434, Positive cache size: 411, Positive conditional cache size: 1, Positive unconditional cache size: 410, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, Eliminated conditions: 1 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 49.8ms, 29 PlacesBefore, 26 PlacesAfterwards, 13 TransitionsBefore, 12 TransitionsAfterwards, 8 CoEnabledTransitionPairs, 2 FixpointIterations, 2 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: 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: SemanticConditionEliminator.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] , SemanticConditionEliminator.Statistics on underlying relation: 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: 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): 434, Positive cache size: 411, Positive conditional cache size: 1, Positive unconditional cache size: 410, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.6ms, 25 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: 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: SemanticConditionEliminator.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] , SemanticConditionEliminator.Statistics on underlying relation: 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: 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): 434, Positive cache size: 411, Positive conditional cache size: 1, Positive unconditional cache size: 410, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, Eliminated conditions: 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 3 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 1.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2577.1ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 187.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1853.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 17 SDtfs, 7 SDslu, 9 SDs, 0 SdLazy, 50 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 34.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 43.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=71occurred in iteration=5, InterpolantAutomatonStates: 24, 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: 9.7ms SsaConstructionTime, 72.6ms SatisfiabilityAnalysisTime, 177.3ms InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 134 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...