/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedVariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe030_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 05:09:16,622 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 05:09:16,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 05:09:16,644 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 05:09:16,644 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 05:09:16,645 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 05:09:16,645 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 05:09:16,647 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 05:09:16,648 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 05:09:16,649 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 05:09:16,649 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 05:09:16,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 05:09:16,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 05:09:16,651 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 05:09:16,652 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 05:09:16,652 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 05:09:16,653 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 05:09:16,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 05:09:16,654 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 05:09:16,655 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 05:09:16,656 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 05:09:16,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 05:09:16,658 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 05:09:16,658 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 05:09:16,660 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-25 05:09:16,660 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-25 05:09:16,660 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-25 05:09:16,661 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-25 05:09:16,661 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-25 05:09:16,662 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-25 05:09:16,662 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 05:09:16,662 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 05:09:16,663 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 05:09:16,663 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 05:09:16,664 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 05:09:16,664 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 05:09:16,665 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 05:09:16,665 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 05:09:16,665 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 05:09:16,665 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 05:09:16,666 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 05:09:16,680 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedVariableLbe.epf [2021-03-25 05:09:16,693 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 05:09:16,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 05:09:16,699 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 05:09:16,699 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 05:09:16,699 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 05:09:16,699 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 05:09:16,699 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 05:09:16,699 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 05:09:16,699 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 05:09:16,700 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 05:09:16,700 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 05:09:16,700 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 05:09:16,700 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 05:09:16,700 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 05:09:16,700 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 05:09:16,700 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 05:09:16,700 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 05:09:16,700 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 05:09:16,700 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 05:09:16,700 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 05:09:16,701 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 05:09:16,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 05:09:16,701 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 05:09:16,701 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 05:09:16,701 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 05:09:16,701 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 05:09:16,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 05:09:16,701 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 05:09:16,701 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 05:09:16,701 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 05:09:16,701 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 05:09:16,948 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 05:09:16,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 05:09:16,969 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 05:09:16,969 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 05:09:16,971 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 05:09:16,972 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe030_pso.opt.i [2021-03-25 05:09:17,028 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2abd42879/7efd08bf425a485181bf9f20601aaeb7/FLAG8b7be1808 [2021-03-25 05:09:17,405 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 05:09:17,405 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe030_pso.opt.i [2021-03-25 05:09:17,413 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2abd42879/7efd08bf425a485181bf9f20601aaeb7/FLAG8b7be1808 [2021-03-25 05:09:17,814 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2abd42879/7efd08bf425a485181bf9f20601aaeb7 [2021-03-25 05:09:17,819 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 05:09:17,820 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 05:09:17,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 05:09:17,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 05:09:17,825 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 05:09:17,825 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:09:17" (1/1) ... [2021-03-25 05:09:17,826 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19e74ca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:17, skipping insertion in model container [2021-03-25 05:09:17,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:09:17" (1/1) ... [2021-03-25 05:09:17,833 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 05:09:17,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 05:09:18,009 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/safe030_pso.opt.i[949,962] [2021-03-25 05:09:18,207 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:09:18,214 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 05:09:18,222 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/safe030_pso.opt.i[949,962] [2021-03-25 05:09:18,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:09:18,317 INFO L208 MainTranslator]: Completed translation [2021-03-25 05:09:18,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:18 WrapperNode [2021-03-25 05:09:18,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 05:09:18,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 05:09:18,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 05:09:18,320 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 05:09:18,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:18" (1/1) ... [2021-03-25 05:09:18,352 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:18" (1/1) ... [2021-03-25 05:09:18,381 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 05:09:18,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 05:09:18,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 05:09:18,382 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 05:09:18,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:18" (1/1) ... [2021-03-25 05:09:18,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:18" (1/1) ... [2021-03-25 05:09:18,397 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:18" (1/1) ... [2021-03-25 05:09:18,397 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:18" (1/1) ... [2021-03-25 05:09:18,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:18" (1/1) ... [2021-03-25 05:09:18,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:18" (1/1) ... [2021-03-25 05:09:18,405 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:18" (1/1) ... [2021-03-25 05:09:18,424 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 05:09:18,424 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 05:09:18,425 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 05:09:18,425 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 05:09:18,425 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 05:09:18,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 05:09:18,483 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 05:09:18,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 05:09:18,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 05:09:18,485 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-25 05:09:18,485 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-25 05:09:18,485 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-25 05:09:18,485 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-25 05:09:18,485 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-25 05:09:18,485 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-25 05:09:18,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 05:09:18,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 05:09:18,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 05:09:18,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 05:09:18,487 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 05:09:19,721 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 05:09:19,721 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-03-25 05:09:19,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:09:19 BoogieIcfgContainer [2021-03-25 05:09:19,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 05:09:19,723 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 05:09:19,723 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 05:09:19,725 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 05:09:19,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 05:09:17" (1/3) ... [2021-03-25 05:09:19,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10fe41d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:09:19, skipping insertion in model container [2021-03-25 05:09:19,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:18" (2/3) ... [2021-03-25 05:09:19,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10fe41d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:09:19, skipping insertion in model container [2021-03-25 05:09:19,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:09:19" (3/3) ... [2021-03-25 05:09:19,727 INFO L111 eAbstractionObserver]: Analyzing ICFG safe030_pso.opt.i [2021-03-25 05:09:19,731 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 05:09:19,733 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-25 05:09:19,734 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 05:09:19,769 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,769 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,770 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,770 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,770 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,770 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,770 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,770 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,770 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,770 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,770 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,770 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,771 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,771 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,771 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,771 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,771 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,771 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,771 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,771 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,771 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,771 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,771 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,771 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,772 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,772 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,772 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,772 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,772 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,772 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,772 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,772 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,772 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,772 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,773 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,773 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,773 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,773 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,773 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,773 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,773 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,773 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,774 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,774 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,774 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,774 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,774 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,774 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,774 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,774 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,774 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,774 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,774 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,774 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,775 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,775 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,775 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,775 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,775 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,775 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,775 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,787 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,788 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,788 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,788 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,788 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,788 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,788 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,788 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,788 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,788 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,789 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,790 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,790 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,790 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,790 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,791 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,791 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,791 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,792 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,792 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,792 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,792 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,792 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,792 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,792 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,793 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,793 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,793 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,793 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,794 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,794 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,794 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,794 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,794 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,794 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,794 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,794 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:19,795 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 05:09:19,813 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-03-25 05:09:19,829 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 05:09:19,829 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 05:09:19,829 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 05:09:19,830 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 05:09:19,830 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 05:09:19,830 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 05:09:19,830 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 05:09:19,830 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 05:09:19,847 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 103 places, 95 transitions, 205 flow [2021-03-25 05:09:19,902 INFO L129 PetriNetUnfolder]: 2/92 cut-off events. [2021-03-25 05:09:19,902 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:09:19,905 INFO L84 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 92 events. 2/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 65 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2021-03-25 05:09:19,905 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 95 transitions, 205 flow [2021-03-25 05:09:19,917 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 92 transitions, 193 flow [2021-03-25 05:09:19,918 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:19,923 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 92 transitions, 193 flow [2021-03-25 05:09:19,941 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 100 places, 92 transitions, 193 flow [2021-03-25 05:09:19,942 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 100 places, 92 transitions, 193 flow [2021-03-25 05:09:19,954 INFO L129 PetriNetUnfolder]: 2/92 cut-off events. [2021-03-25 05:09:19,954 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:09:19,954 INFO L84 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 92 events. 2/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 69 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2021-03-25 05:09:19,966 INFO L142 LiptonReduction]: Number of co-enabled transitions 1578 [2021-03-25 05:09:20,791 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2021-03-25 05:09:21,173 WARN L205 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 88 [2021-03-25 05:09:21,286 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-03-25 05:09:22,023 WARN L205 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 186 [2021-03-25 05:09:22,269 WARN L205 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2021-03-25 05:09:23,515 WARN L205 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 310 DAG size of output: 266 [2021-03-25 05:09:24,041 WARN L205 SmtUtils]: Spent 523.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2021-03-25 05:09:24,782 INFO L154 LiptonReduction]: Checked pairs total: 2818 [2021-03-25 05:09:24,782 INFO L156 LiptonReduction]: Total number of compositions: 62 [2021-03-25 05:09:24,784 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4867 [2021-03-25 05:09:24,792 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-03-25 05:09:24,792 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:09:24,792 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:24,793 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:24,793 INFO L428 AbstractCegarLoop]: === Iteration 1 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:24,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:24,798 INFO L82 PathProgramCache]: Analyzing trace with hash 903762281, now seen corresponding path program 1 times [2021-03-25 05:09:24,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:24,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474558689] [2021-03-25 05:09:24,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:24,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:25,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:25,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:09:25,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:25,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:25,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:09:25,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474558689] [2021-03-25 05:09:25,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:25,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:09:25,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115524117] [2021-03-25 05:09:25,028 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 05:09:25,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:25,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 05:09:25,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 05:09:25,040 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 157 [2021-03-25 05:09:25,044 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 83 flow. Second operand has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:25,044 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:25,044 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 157 [2021-03-25 05:09:25,045 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:25,109 INFO L129 PetriNetUnfolder]: 16/90 cut-off events. [2021-03-25 05:09:25,110 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:09:25,110 INFO L84 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 90 events. 16/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 281 event pairs, 6 based on Foata normal form. 5/88 useless extension candidates. Maximal degree in co-relation 117. Up to 27 conditions per place. [2021-03-25 05:09:25,111 INFO L132 encePairwiseOnDemand]: 153/157 looper letters, 7 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2021-03-25 05:09:25,111 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 37 transitions, 101 flow [2021-03-25 05:09:25,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:09:25,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:09:25,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 426 transitions. [2021-03-25 05:09:25,127 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9044585987261147 [2021-03-25 05:09:25,127 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 426 transitions. [2021-03-25 05:09:25,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 426 transitions. [2021-03-25 05:09:25,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:25,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 426 transitions. [2021-03-25 05:09:25,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:25,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:25,142 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:25,143 INFO L185 Difference]: Start difference. First operand has 46 places, 37 transitions, 83 flow. Second operand 3 states and 426 transitions. [2021-03-25 05:09:25,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 37 transitions, 101 flow [2021-03-25 05:09:25,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 37 transitions, 98 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 05:09:25,147 INFO L241 Difference]: Finished difference. Result has 43 places, 34 transitions, 78 flow [2021-03-25 05:09:25,148 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2021-03-25 05:09:25,149 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2021-03-25 05:09:25,149 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:25,149 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 43 places, 34 transitions, 78 flow [2021-03-25 05:09:25,150 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 43 places, 34 transitions, 78 flow [2021-03-25 05:09:25,151 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 43 places, 34 transitions, 78 flow [2021-03-25 05:09:25,155 INFO L129 PetriNetUnfolder]: 0/34 cut-off events. [2021-03-25 05:09:25,155 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:09:25,156 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 34 events. 0/34 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. 0/33 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 05:09:25,156 INFO L142 LiptonReduction]: Number of co-enabled transitions 318 [2021-03-25 05:09:25,450 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-03-25 05:09:25,582 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-03-25 05:09:25,930 WARN L205 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2021-03-25 05:09:26,218 WARN L205 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2021-03-25 05:09:26,803 WARN L205 SmtUtils]: Spent 582.00 ms on a formula simplification that was a NOOP. DAG size: 266 [2021-03-25 05:09:27,380 WARN L205 SmtUtils]: Spent 575.00 ms on a formula simplification that was a NOOP. DAG size: 266 [2021-03-25 05:09:27,810 WARN L205 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2021-03-25 05:09:28,087 WARN L205 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2021-03-25 05:09:28,660 WARN L205 SmtUtils]: Spent 570.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2021-03-25 05:09:29,237 WARN L205 SmtUtils]: Spent 576.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2021-03-25 05:09:29,585 INFO L154 LiptonReduction]: Checked pairs total: 863 [2021-03-25 05:09:29,586 INFO L156 LiptonReduction]: Total number of compositions: 11 [2021-03-25 05:09:29,586 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4437 [2021-03-25 05:09:29,587 INFO L480 AbstractCegarLoop]: Abstraction has has 33 places, 24 transitions, 58 flow [2021-03-25 05:09:29,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:29,587 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:29,587 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:29,587 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 05:09:29,588 INFO L428 AbstractCegarLoop]: === Iteration 2 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:29,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:29,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1787014718, now seen corresponding path program 1 times [2021-03-25 05:09:29,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:29,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021848306] [2021-03-25 05:09:29,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:29,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:29,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:29,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:29,725 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-25 05:09:29,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-25 05:09:29,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:09:29,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021848306] [2021-03-25 05:09:29,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:29,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:09:29,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145640435] [2021-03-25 05:09:29,730 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:09:29,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:29,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:09:29,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:09:29,739 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 168 [2021-03-25 05:09:29,740 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 24 transitions, 58 flow. Second operand has 4 states, 4 states have (on average 143.75) internal successors, (575), 4 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:29,742 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:29,742 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 168 [2021-03-25 05:09:29,742 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:29,776 INFO L129 PetriNetUnfolder]: 7/46 cut-off events. [2021-03-25 05:09:29,776 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:09:29,777 INFO L84 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 46 events. 7/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 111 event pairs, 1 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 64. Up to 10 conditions per place. [2021-03-25 05:09:29,777 INFO L132 encePairwiseOnDemand]: 163/168 looper letters, 3 selfloop transitions, 3 changer transitions 7/31 dead transitions. [2021-03-25 05:09:29,777 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 31 transitions, 96 flow [2021-03-25 05:09:29,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:09:29,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:09:29,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 728 transitions. [2021-03-25 05:09:29,779 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8666666666666667 [2021-03-25 05:09:29,779 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 728 transitions. [2021-03-25 05:09:29,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 728 transitions. [2021-03-25 05:09:29,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:29,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 728 transitions. [2021-03-25 05:09:29,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 145.6) internal successors, (728), 5 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:29,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 168.0) internal successors, (1008), 6 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:29,782 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 168.0) internal successors, (1008), 6 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:29,782 INFO L185 Difference]: Start difference. First operand has 33 places, 24 transitions, 58 flow. Second operand 5 states and 728 transitions. [2021-03-25 05:09:29,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 31 transitions, 96 flow [2021-03-25 05:09:29,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 31 transitions, 92 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 05:09:29,783 INFO L241 Difference]: Finished difference. Result has 37 places, 24 transitions, 73 flow [2021-03-25 05:09:29,783 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=73, PETRI_PLACES=37, PETRI_TRANSITIONS=24} [2021-03-25 05:09:29,784 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, -9 predicate places. [2021-03-25 05:09:29,784 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:29,784 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 24 transitions, 73 flow [2021-03-25 05:09:29,784 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 24 transitions, 73 flow [2021-03-25 05:09:29,784 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 33 places, 24 transitions, 73 flow [2021-03-25 05:09:29,787 INFO L129 PetriNetUnfolder]: 3/30 cut-off events. [2021-03-25 05:09:29,787 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-25 05:09:29,788 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 30 events. 3/30 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 56 event pairs, 1 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 45. Up to 10 conditions per place. [2021-03-25 05:09:29,788 INFO L142 LiptonReduction]: Number of co-enabled transitions 212 [2021-03-25 05:09:30,361 WARN L205 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 110 [2021-03-25 05:09:30,484 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-03-25 05:09:30,744 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 110 [2021-03-25 05:09:30,877 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-03-25 05:09:30,879 INFO L154 LiptonReduction]: Checked pairs total: 594 [2021-03-25 05:09:30,879 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 05:09:30,879 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1095 [2021-03-25 05:09:30,880 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 22 transitions, 69 flow [2021-03-25 05:09:30,880 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 143.75) internal successors, (575), 4 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:30,883 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:30,883 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:30,883 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 05:09:30,884 INFO L428 AbstractCegarLoop]: === Iteration 3 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:30,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:30,884 INFO L82 PathProgramCache]: Analyzing trace with hash -498930536, now seen corresponding path program 1 times [2021-03-25 05:09:30,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:30,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53821357] [2021-03-25 05:09:30,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:30,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:30,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:30,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:09:30,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:30,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:30,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:09:30,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53821357] [2021-03-25 05:09:30,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:30,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:09:30,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47647164] [2021-03-25 05:09:30,980 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 05:09:30,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:30,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 05:09:30,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 05:09:30,982 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 170 [2021-03-25 05:09:30,982 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 22 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:30,982 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:30,982 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 170 [2021-03-25 05:09:30,982 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:30,999 INFO L129 PetriNetUnfolder]: 7/47 cut-off events. [2021-03-25 05:09:30,999 INFO L130 PetriNetUnfolder]: For 12/16 co-relation queries the response was YES. [2021-03-25 05:09:30,999 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 47 events. 7/47 cut-off events. For 12/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 137 event pairs, 3 based on Foata normal form. 1/43 useless extension candidates. Maximal degree in co-relation 82. Up to 15 conditions per place. [2021-03-25 05:09:31,000 INFO L132 encePairwiseOnDemand]: 166/170 looper letters, 3 selfloop transitions, 3 changer transitions 0/24 dead transitions. [2021-03-25 05:09:31,000 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 24 transitions, 85 flow [2021-03-25 05:09:31,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:09:31,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:09:31,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 460 transitions. [2021-03-25 05:09:31,002 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9019607843137255 [2021-03-25 05:09:31,002 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 460 transitions. [2021-03-25 05:09:31,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 460 transitions. [2021-03-25 05:09:31,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:31,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 460 transitions. [2021-03-25 05:09:31,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:31,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:31,004 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:31,004 INFO L185 Difference]: Start difference. First operand has 31 places, 22 transitions, 69 flow. Second operand 3 states and 460 transitions. [2021-03-25 05:09:31,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 24 transitions, 85 flow [2021-03-25 05:09:31,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 24 transitions, 78 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-03-25 05:09:31,006 INFO L241 Difference]: Finished difference. Result has 32 places, 24 transitions, 81 flow [2021-03-25 05:09:31,006 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2021-03-25 05:09:31,006 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, -14 predicate places. [2021-03-25 05:09:31,008 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:31,009 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 24 transitions, 81 flow [2021-03-25 05:09:31,009 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 32 places, 24 transitions, 81 flow [2021-03-25 05:09:31,009 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 24 transitions, 81 flow [2021-03-25 05:09:31,014 INFO L129 PetriNetUnfolder]: 10/45 cut-off events. [2021-03-25 05:09:31,014 INFO L130 PetriNetUnfolder]: For 7/9 co-relation queries the response was YES. [2021-03-25 05:09:31,015 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 45 events. 10/45 cut-off events. For 7/9 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 122 event pairs, 3 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 81. Up to 19 conditions per place. [2021-03-25 05:09:31,015 INFO L142 LiptonReduction]: Number of co-enabled transitions 230 [2021-03-25 05:09:31,016 INFO L154 LiptonReduction]: Checked pairs total: 186 [2021-03-25 05:09:31,016 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:09:31,016 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8 [2021-03-25 05:09:31,019 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 81 flow [2021-03-25 05:09:31,020 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:31,020 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:31,020 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:31,020 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 05:09:31,020 INFO L428 AbstractCegarLoop]: === Iteration 4 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:31,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:31,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1603850412, now seen corresponding path program 1 times [2021-03-25 05:09:31,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:31,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028756086] [2021-03-25 05:09:31,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:31,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:31,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:31,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:09:31,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:31,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:31,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:09:31,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028756086] [2021-03-25 05:09:31,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:31,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:09:31,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915259005] [2021-03-25 05:09:31,110 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 05:09:31,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:31,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 05:09:31,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 05:09:31,112 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 170 [2021-03-25 05:09:31,113 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:31,113 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:31,113 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 170 [2021-03-25 05:09:31,113 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:31,125 INFO L129 PetriNetUnfolder]: 4/43 cut-off events. [2021-03-25 05:09:31,125 INFO L130 PetriNetUnfolder]: For 32/76 co-relation queries the response was YES. [2021-03-25 05:09:31,125 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 43 events. 4/43 cut-off events. For 32/76 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 121 event pairs, 2 based on Foata normal form. 4/44 useless extension candidates. Maximal degree in co-relation 79. Up to 13 conditions per place. [2021-03-25 05:09:31,125 INFO L132 encePairwiseOnDemand]: 167/170 looper letters, 3 selfloop transitions, 3 changer transitions 0/24 dead transitions. [2021-03-25 05:09:31,125 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 24 transitions, 93 flow [2021-03-25 05:09:31,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:09:31,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:09:31,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 450 transitions. [2021-03-25 05:09:31,127 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8823529411764706 [2021-03-25 05:09:31,127 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 450 transitions. [2021-03-25 05:09:31,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 450 transitions. [2021-03-25 05:09:31,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:31,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 450 transitions. [2021-03-25 05:09:31,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:31,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:31,130 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:31,130 INFO L185 Difference]: Start difference. First operand has 32 places, 24 transitions, 81 flow. Second operand 3 states and 450 transitions. [2021-03-25 05:09:31,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 24 transitions, 93 flow [2021-03-25 05:09:31,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 24 transitions, 90 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 05:09:31,131 INFO L241 Difference]: Finished difference. Result has 34 places, 24 transitions, 89 flow [2021-03-25 05:09:31,131 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2021-03-25 05:09:31,131 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, -12 predicate places. [2021-03-25 05:09:31,131 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:31,131 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 24 transitions, 89 flow [2021-03-25 05:09:31,131 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 24 transitions, 89 flow [2021-03-25 05:09:31,131 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 24 transitions, 89 flow [2021-03-25 05:09:31,136 INFO L129 PetriNetUnfolder]: 4/47 cut-off events. [2021-03-25 05:09:31,136 INFO L130 PetriNetUnfolder]: For 37/47 co-relation queries the response was YES. [2021-03-25 05:09:31,137 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 47 events. 4/47 cut-off events. For 37/47 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 149 event pairs, 1 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 90. Up to 15 conditions per place. [2021-03-25 05:09:31,138 INFO L142 LiptonReduction]: Number of co-enabled transitions 230 [2021-03-25 05:09:31,139 INFO L154 LiptonReduction]: Checked pairs total: 216 [2021-03-25 05:09:31,139 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:09:31,139 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8 [2021-03-25 05:09:31,140 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 89 flow [2021-03-25 05:09:31,141 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:31,141 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:31,141 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:31,141 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 05:09:31,141 INFO L428 AbstractCegarLoop]: === Iteration 5 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:31,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:31,141 INFO L82 PathProgramCache]: Analyzing trace with hash 583212867, now seen corresponding path program 1 times [2021-03-25 05:09:31,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:31,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59367981] [2021-03-25 05:09:31,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:31,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:31,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:31,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:09:31,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:31,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 05:09:31,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:09:31,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59367981] [2021-03-25 05:09:31,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:31,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:09:31,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572191685] [2021-03-25 05:09:31,237 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:09:31,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:31,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:09:31,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:09:31,239 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 170 [2021-03-25 05:09:31,239 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 89 flow. Second operand has 4 states, 4 states have (on average 131.75) internal successors, (527), 4 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:31,239 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:31,239 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 170 [2021-03-25 05:09:31,239 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:31,287 INFO L129 PetriNetUnfolder]: 83/212 cut-off events. [2021-03-25 05:09:31,287 INFO L130 PetriNetUnfolder]: For 223/259 co-relation queries the response was YES. [2021-03-25 05:09:31,288 INFO L84 FinitePrefix]: Finished finitePrefix Result has 500 conditions, 212 events. 83/212 cut-off events. For 223/259 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1021 event pairs, 53 based on Foata normal form. 1/200 useless extension candidates. Maximal degree in co-relation 487. Up to 129 conditions per place. [2021-03-25 05:09:31,289 INFO L132 encePairwiseOnDemand]: 166/170 looper letters, 7 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2021-03-25 05:09:31,289 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 27 transitions, 115 flow [2021-03-25 05:09:31,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:09:31,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:09:31,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 404 transitions. [2021-03-25 05:09:31,291 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.792156862745098 [2021-03-25 05:09:31,291 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 404 transitions. [2021-03-25 05:09:31,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 404 transitions. [2021-03-25 05:09:31,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:31,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 404 transitions. [2021-03-25 05:09:31,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 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) [2021-03-25 05:09:31,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:31,293 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:31,293 INFO L185 Difference]: Start difference. First operand has 34 places, 24 transitions, 89 flow. Second operand 3 states and 404 transitions. [2021-03-25 05:09:31,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 27 transitions, 115 flow [2021-03-25 05:09:31,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 27 transitions, 110 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-03-25 05:09:31,295 INFO L241 Difference]: Finished difference. Result has 36 places, 26 transitions, 103 flow [2021-03-25 05:09:31,295 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2021-03-25 05:09:31,295 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, -10 predicate places. [2021-03-25 05:09:31,296 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:31,296 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 26 transitions, 103 flow [2021-03-25 05:09:31,296 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 26 transitions, 103 flow [2021-03-25 05:09:31,296 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 26 transitions, 103 flow [2021-03-25 05:09:31,302 INFO L129 PetriNetUnfolder]: 17/81 cut-off events. [2021-03-25 05:09:31,302 INFO L130 PetriNetUnfolder]: For 102/119 co-relation queries the response was YES. [2021-03-25 05:09:31,302 INFO L84 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 81 events. 17/81 cut-off events. For 102/119 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 341 event pairs, 5 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 183. Up to 27 conditions per place. [2021-03-25 05:09:31,303 INFO L142 LiptonReduction]: Number of co-enabled transitions 244 [2021-03-25 05:09:31,305 INFO L154 LiptonReduction]: Checked pairs total: 148 [2021-03-25 05:09:31,305 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:09:31,305 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9 [2021-03-25 05:09:31,308 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 103 flow [2021-03-25 05:09:31,308 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 131.75) internal successors, (527), 4 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:31,309 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:31,309 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:31,309 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 05:09:31,309 INFO L428 AbstractCegarLoop]: === Iteration 6 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:31,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:31,309 INFO L82 PathProgramCache]: Analyzing trace with hash -2015686887, now seen corresponding path program 1 times [2021-03-25 05:09:31,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:31,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534167960] [2021-03-25 05:09:31,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:31,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:31,376 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.3 percent of original size [2021-03-25 05:09:31,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-25 05:09:31,400 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.5 percent of original size [2021-03-25 05:09:31,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-25 05:09:31,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:31,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 05:09:31,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:09:31,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534167960] [2021-03-25 05:09:31,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:31,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:09:31,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906406877] [2021-03-25 05:09:31,428 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:09:31,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:31,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:09:31,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:09:31,429 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 170 [2021-03-25 05:09:31,430 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 103 flow. Second operand has 5 states, 5 states have (on average 131.8) internal successors, (659), 5 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:31,430 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:31,430 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 170 [2021-03-25 05:09:31,430 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:31,479 INFO L129 PetriNetUnfolder]: 80/207 cut-off events. [2021-03-25 05:09:31,480 INFO L130 PetriNetUnfolder]: For 345/367 co-relation queries the response was YES. [2021-03-25 05:09:31,480 INFO L84 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 207 events. 80/207 cut-off events. For 345/367 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 987 event pairs, 15 based on Foata normal form. 6/204 useless extension candidates. Maximal degree in co-relation 523. Up to 109 conditions per place. [2021-03-25 05:09:31,481 INFO L132 encePairwiseOnDemand]: 166/170 looper letters, 8 selfloop transitions, 4 changer transitions 0/29 dead transitions. [2021-03-25 05:09:31,481 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 29 transitions, 133 flow [2021-03-25 05:09:31,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:09:31,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:09:31,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 537 transitions. [2021-03-25 05:09:31,483 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7897058823529411 [2021-03-25 05:09:31,483 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 537 transitions. [2021-03-25 05:09:31,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 537 transitions. [2021-03-25 05:09:31,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:31,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 537 transitions. [2021-03-25 05:09:31,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 134.25) internal successors, (537), 4 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:31,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 170.0) internal successors, (850), 5 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:31,486 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 170.0) internal successors, (850), 5 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:31,486 INFO L185 Difference]: Start difference. First operand has 36 places, 26 transitions, 103 flow. Second operand 4 states and 537 transitions. [2021-03-25 05:09:31,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 29 transitions, 133 flow [2021-03-25 05:09:31,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 29 transitions, 130 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 05:09:31,487 INFO L241 Difference]: Finished difference. Result has 39 places, 26 transitions, 112 flow [2021-03-25 05:09:31,487 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=112, PETRI_PLACES=39, PETRI_TRANSITIONS=26} [2021-03-25 05:09:31,488 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, -7 predicate places. [2021-03-25 05:09:31,488 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:31,488 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 26 transitions, 112 flow [2021-03-25 05:09:31,488 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 26 transitions, 112 flow [2021-03-25 05:09:31,488 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 39 places, 26 transitions, 112 flow [2021-03-25 05:09:31,494 INFO L129 PetriNetUnfolder]: 10/74 cut-off events. [2021-03-25 05:09:31,494 INFO L130 PetriNetUnfolder]: For 136/149 co-relation queries the response was YES. [2021-03-25 05:09:31,494 INFO L84 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 74 events. 10/74 cut-off events. For 136/149 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 313 event pairs, 5 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 169. Up to 23 conditions per place. [2021-03-25 05:09:31,495 INFO L142 LiptonReduction]: Number of co-enabled transitions 244 [2021-03-25 05:09:31,496 INFO L154 LiptonReduction]: Checked pairs total: 144 [2021-03-25 05:09:31,496 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:09:31,496 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8 [2021-03-25 05:09:31,496 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 26 transitions, 112 flow [2021-03-25 05:09:31,497 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 131.8) internal successors, (659), 5 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:31,497 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:31,497 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:31,497 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 05:09:31,497 INFO L428 AbstractCegarLoop]: === Iteration 7 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:31,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:31,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1118630836, now seen corresponding path program 1 times [2021-03-25 05:09:31,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:31,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095157627] [2021-03-25 05:09:31,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:31,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:31,555 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.7 percent of original size [2021-03-25 05:09:31,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-03-25 05:09:31,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:31,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:09:31,590 INFO L142 QuantifierPusher]: treesize reduction 10, result has 81.5 percent of original size [2021-03-25 05:09:31,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-25 05:09:31,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:09:31,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095157627] [2021-03-25 05:09:31,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:31,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:09:31,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873395310] [2021-03-25 05:09:31,604 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:09:31,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:31,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:09:31,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:09:31,605 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 170 [2021-03-25 05:09:31,605 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 26 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 126.8) internal successors, (634), 5 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:31,605 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:31,605 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 170 [2021-03-25 05:09:31,605 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:31,682 INFO L129 PetriNetUnfolder]: 68/184 cut-off events. [2021-03-25 05:09:31,682 INFO L130 PetriNetUnfolder]: For 445/468 co-relation queries the response was YES. [2021-03-25 05:09:31,683 INFO L84 FinitePrefix]: Finished finitePrefix Result has 504 conditions, 184 events. 68/184 cut-off events. For 445/468 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 848 event pairs, 28 based on Foata normal form. 3/179 useless extension candidates. Maximal degree in co-relation 487. Up to 105 conditions per place. [2021-03-25 05:09:31,683 INFO L132 encePairwiseOnDemand]: 165/170 looper letters, 8 selfloop transitions, 5 changer transitions 0/30 dead transitions. [2021-03-25 05:09:31,684 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 30 transitions, 148 flow [2021-03-25 05:09:31,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:09:31,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:09:31,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 518 transitions. [2021-03-25 05:09:31,685 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7617647058823529 [2021-03-25 05:09:31,685 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 518 transitions. [2021-03-25 05:09:31,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 518 transitions. [2021-03-25 05:09:31,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:31,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 518 transitions. [2021-03-25 05:09:31,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 129.5) internal successors, (518), 4 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:31,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 170.0) internal successors, (850), 5 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:31,688 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 170.0) internal successors, (850), 5 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:31,688 INFO L185 Difference]: Start difference. First operand has 39 places, 26 transitions, 112 flow. Second operand 4 states and 518 transitions. [2021-03-25 05:09:31,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 30 transitions, 148 flow [2021-03-25 05:09:31,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 30 transitions, 140 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-25 05:09:31,690 INFO L241 Difference]: Finished difference. Result has 41 places, 28 transitions, 129 flow [2021-03-25 05:09:31,691 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=129, PETRI_PLACES=41, PETRI_TRANSITIONS=28} [2021-03-25 05:09:31,691 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, -5 predicate places. [2021-03-25 05:09:31,691 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:31,691 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 28 transitions, 129 flow [2021-03-25 05:09:31,691 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 41 places, 28 transitions, 129 flow [2021-03-25 05:09:31,691 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 41 places, 28 transitions, 129 flow [2021-03-25 05:09:31,698 INFO L129 PetriNetUnfolder]: 16/81 cut-off events. [2021-03-25 05:09:31,698 INFO L130 PetriNetUnfolder]: For 182/187 co-relation queries the response was YES. [2021-03-25 05:09:31,698 INFO L84 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 81 events. 16/81 cut-off events. For 182/187 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 339 event pairs, 5 based on Foata normal form. 1/80 useless extension candidates. Maximal degree in co-relation 216. Up to 25 conditions per place. [2021-03-25 05:09:31,699 INFO L142 LiptonReduction]: Number of co-enabled transitions 260 [2021-03-25 05:09:31,702 INFO L154 LiptonReduction]: Checked pairs total: 142 [2021-03-25 05:09:31,702 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:09:31,702 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11 [2021-03-25 05:09:31,705 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 28 transitions, 129 flow [2021-03-25 05:09:31,705 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 126.8) internal successors, (634), 5 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:31,705 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:31,705 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:31,705 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 05:09:31,705 INFO L428 AbstractCegarLoop]: === Iteration 8 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:31,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:31,706 INFO L82 PathProgramCache]: Analyzing trace with hash -48620086, now seen corresponding path program 1 times [2021-03-25 05:09:31,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:31,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497443143] [2021-03-25 05:09:31,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:31,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:31,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:31,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:31,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:31,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:31,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:31,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 05:09:31,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:31,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 05:09:31,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:09:31,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497443143] [2021-03-25 05:09:31,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:31,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:09:31,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940635461] [2021-03-25 05:09:31,782 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:09:31,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:31,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:09:31,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:09:31,783 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 170 [2021-03-25 05:09:31,784 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 28 transitions, 129 flow. Second operand has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:31,784 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:31,784 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 170 [2021-03-25 05:09:31,784 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:31,843 INFO L129 PetriNetUnfolder]: 94/232 cut-off events. [2021-03-25 05:09:31,843 INFO L130 PetriNetUnfolder]: For 691/709 co-relation queries the response was YES. [2021-03-25 05:09:31,844 INFO L84 FinitePrefix]: Finished finitePrefix Result has 710 conditions, 232 events. 94/232 cut-off events. For 691/709 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1128 event pairs, 20 based on Foata normal form. 7/227 useless extension candidates. Maximal degree in co-relation 692. Up to 127 conditions per place. [2021-03-25 05:09:31,845 INFO L132 encePairwiseOnDemand]: 163/170 looper letters, 8 selfloop transitions, 11 changer transitions 0/36 dead transitions. [2021-03-25 05:09:31,845 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 36 transitions, 201 flow [2021-03-25 05:09:31,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:09:31,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:09:31,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 706 transitions. [2021-03-25 05:09:31,847 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8305882352941176 [2021-03-25 05:09:31,847 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 706 transitions. [2021-03-25 05:09:31,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 706 transitions. [2021-03-25 05:09:31,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:31,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 706 transitions. [2021-03-25 05:09:31,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 141.2) internal successors, (706), 5 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:31,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 170.0) internal successors, (1020), 6 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:31,849 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 170.0) internal successors, (1020), 6 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:31,850 INFO L185 Difference]: Start difference. First operand has 41 places, 28 transitions, 129 flow. Second operand 5 states and 706 transitions. [2021-03-25 05:09:31,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 36 transitions, 201 flow [2021-03-25 05:09:31,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 36 transitions, 192 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-25 05:09:31,852 INFO L241 Difference]: Finished difference. Result has 45 places, 35 transitions, 197 flow [2021-03-25 05:09:31,852 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=197, PETRI_PLACES=45, PETRI_TRANSITIONS=35} [2021-03-25 05:09:31,852 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, -1 predicate places. [2021-03-25 05:09:31,852 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:31,852 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 35 transitions, 197 flow [2021-03-25 05:09:31,852 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 35 transitions, 197 flow [2021-03-25 05:09:31,853 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 45 places, 35 transitions, 197 flow [2021-03-25 05:09:31,870 INFO L129 PetriNetUnfolder]: 67/197 cut-off events. [2021-03-25 05:09:31,871 INFO L130 PetriNetUnfolder]: For 874/902 co-relation queries the response was YES. [2021-03-25 05:09:31,871 INFO L84 FinitePrefix]: Finished finitePrefix Result has 676 conditions, 197 events. 67/197 cut-off events. For 874/902 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1066 event pairs, 13 based on Foata normal form. 4/185 useless extension candidates. Maximal degree in co-relation 658. Up to 74 conditions per place. [2021-03-25 05:09:31,872 INFO L142 LiptonReduction]: Number of co-enabled transitions 326 [2021-03-25 05:09:31,877 INFO L154 LiptonReduction]: Checked pairs total: 95 [2021-03-25 05:09:31,877 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:09:31,877 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 25 [2021-03-25 05:09:31,878 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 35 transitions, 197 flow [2021-03-25 05:09:31,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:31,879 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:31,879 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:31,879 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 05:09:31,879 INFO L428 AbstractCegarLoop]: === Iteration 9 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:31,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:31,879 INFO L82 PathProgramCache]: Analyzing trace with hash -3772054, now seen corresponding path program 2 times [2021-03-25 05:09:31,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:31,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093300693] [2021-03-25 05:09:31,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:31,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:31,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:31,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 05:09:31,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:31,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 05:09:31,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:31,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 05:09:31,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:31,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 05:09:31,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:09:31,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093300693] [2021-03-25 05:09:31,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:31,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:09:31,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386849102] [2021-03-25 05:09:31,932 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:09:31,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:31,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:09:31,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:09:31,933 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 170 [2021-03-25 05:09:31,933 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 197 flow. Second operand has 5 states, 5 states have (on average 130.0) internal successors, (650), 5 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:31,933 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:31,933 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 170 [2021-03-25 05:09:31,933 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:32,026 INFO L129 PetriNetUnfolder]: 86/224 cut-off events. [2021-03-25 05:09:32,026 INFO L130 PetriNetUnfolder]: For 963/989 co-relation queries the response was YES. [2021-03-25 05:09:32,027 INFO L84 FinitePrefix]: Finished finitePrefix Result has 830 conditions, 224 events. 86/224 cut-off events. For 963/989 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1110 event pairs, 9 based on Foata normal form. 7/222 useless extension candidates. Maximal degree in co-relation 810. Up to 113 conditions per place. [2021-03-25 05:09:32,029 INFO L132 encePairwiseOnDemand]: 163/170 looper letters, 12 selfloop transitions, 9 changer transitions 0/38 dead transitions. [2021-03-25 05:09:32,029 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 38 transitions, 240 flow [2021-03-25 05:09:32,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:09:32,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:09:32,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 659 transitions. [2021-03-25 05:09:32,031 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7752941176470588 [2021-03-25 05:09:32,031 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 659 transitions. [2021-03-25 05:09:32,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 659 transitions. [2021-03-25 05:09:32,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:32,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 659 transitions. [2021-03-25 05:09:32,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 131.8) internal successors, (659), 5 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:32,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 170.0) internal successors, (1020), 6 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:32,034 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 170.0) internal successors, (1020), 6 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:32,034 INFO L185 Difference]: Start difference. First operand has 45 places, 35 transitions, 197 flow. Second operand 5 states and 659 transitions. [2021-03-25 05:09:32,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 38 transitions, 240 flow [2021-03-25 05:09:32,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 38 transitions, 235 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-03-25 05:09:32,036 INFO L241 Difference]: Finished difference. Result has 49 places, 36 transitions, 212 flow [2021-03-25 05:09:32,036 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=212, PETRI_PLACES=49, PETRI_TRANSITIONS=36} [2021-03-25 05:09:32,037 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 3 predicate places. [2021-03-25 05:09:32,037 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:32,037 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 36 transitions, 212 flow [2021-03-25 05:09:32,037 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 36 transitions, 212 flow [2021-03-25 05:09:32,037 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 49 places, 36 transitions, 212 flow [2021-03-25 05:09:32,059 INFO L129 PetriNetUnfolder]: 56/185 cut-off events. [2021-03-25 05:09:32,060 INFO L130 PetriNetUnfolder]: For 873/897 co-relation queries the response was YES. [2021-03-25 05:09:32,060 INFO L84 FinitePrefix]: Finished finitePrefix Result has 662 conditions, 185 events. 56/185 cut-off events. For 873/897 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1005 event pairs, 15 based on Foata normal form. 4/176 useless extension candidates. Maximal degree in co-relation 642. Up to 68 conditions per place. [2021-03-25 05:09:32,062 INFO L142 LiptonReduction]: Number of co-enabled transitions 336 [2021-03-25 05:09:32,066 INFO L154 LiptonReduction]: Checked pairs total: 121 [2021-03-25 05:09:32,066 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:09:32,066 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 29 [2021-03-25 05:09:32,066 INFO L480 AbstractCegarLoop]: Abstraction has has 49 places, 36 transitions, 212 flow [2021-03-25 05:09:32,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 130.0) internal successors, (650), 5 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:32,067 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:32,067 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:32,067 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-25 05:09:32,067 INFO L428 AbstractCegarLoop]: === Iteration 10 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:32,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:32,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1938214636, now seen corresponding path program 3 times [2021-03-25 05:09:32,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:32,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212610972] [2021-03-25 05:09:32,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:32,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:32,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:32,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 05:09:32,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:32,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:09:32,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:32,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 05:09:32,135 INFO L142 QuantifierPusher]: treesize reduction 10, result has 82.8 percent of original size [2021-03-25 05:09:32,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-03-25 05:09:32,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:09:32,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212610972] [2021-03-25 05:09:32,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:32,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:09:32,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823782084] [2021-03-25 05:09:32,154 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 05:09:32,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:32,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 05:09:32,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-25 05:09:32,155 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 170 [2021-03-25 05:09:32,156 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 36 transitions, 212 flow. Second operand has 6 states, 6 states have (on average 130.83333333333334) internal successors, (785), 6 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:32,156 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:32,156 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 170 [2021-03-25 05:09:32,156 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:32,244 INFO L129 PetriNetUnfolder]: 77/205 cut-off events. [2021-03-25 05:09:32,244 INFO L130 PetriNetUnfolder]: For 1141/1169 co-relation queries the response was YES. [2021-03-25 05:09:32,245 INFO L84 FinitePrefix]: Finished finitePrefix Result has 822 conditions, 205 events. 77/205 cut-off events. For 1141/1169 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1011 event pairs, 2 based on Foata normal form. 18/209 useless extension candidates. Maximal degree in co-relation 800. Up to 99 conditions per place. [2021-03-25 05:09:32,245 INFO L132 encePairwiseOnDemand]: 164/170 looper letters, 15 selfloop transitions, 12 changer transitions 0/44 dead transitions. [2021-03-25 05:09:32,246 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 44 transitions, 308 flow [2021-03-25 05:09:32,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:09:32,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:09:32,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 667 transitions. [2021-03-25 05:09:32,248 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7847058823529411 [2021-03-25 05:09:32,248 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 667 transitions. [2021-03-25 05:09:32,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 667 transitions. [2021-03-25 05:09:32,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:32,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 667 transitions. [2021-03-25 05:09:32,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 133.4) internal successors, (667), 5 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:32,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 170.0) internal successors, (1020), 6 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:32,250 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 170.0) internal successors, (1020), 6 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:32,250 INFO L185 Difference]: Start difference. First operand has 49 places, 36 transitions, 212 flow. Second operand 5 states and 667 transitions. [2021-03-25 05:09:32,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 44 transitions, 308 flow [2021-03-25 05:09:32,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 44 transitions, 303 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 05:09:32,253 INFO L241 Difference]: Finished difference. Result has 52 places, 39 transitions, 267 flow [2021-03-25 05:09:32,253 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=267, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2021-03-25 05:09:32,254 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 6 predicate places. [2021-03-25 05:09:32,254 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:32,254 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 52 places, 39 transitions, 267 flow [2021-03-25 05:09:32,254 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 52 places, 39 transitions, 267 flow [2021-03-25 05:09:32,254 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 52 places, 39 transitions, 267 flow [2021-03-25 05:09:32,273 INFO L129 PetriNetUnfolder]: 59/192 cut-off events. [2021-03-25 05:09:32,274 INFO L130 PetriNetUnfolder]: For 886/904 co-relation queries the response was YES. [2021-03-25 05:09:32,274 INFO L84 FinitePrefix]: Finished finitePrefix Result has 754 conditions, 192 events. 59/192 cut-off events. For 886/904 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1104 event pairs, 12 based on Foata normal form. 7/191 useless extension candidates. Maximal degree in co-relation 733. Up to 65 conditions per place. [2021-03-25 05:09:32,276 INFO L142 LiptonReduction]: Number of co-enabled transitions 360 [2021-03-25 05:09:32,279 INFO L154 LiptonReduction]: Checked pairs total: 204 [2021-03-25 05:09:32,279 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:09:32,279 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 25 [2021-03-25 05:09:32,280 INFO L480 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 267 flow [2021-03-25 05:09:32,280 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 130.83333333333334) internal successors, (785), 6 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:32,280 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:32,280 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:32,280 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-25 05:09:32,280 INFO L428 AbstractCegarLoop]: === Iteration 11 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:32,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:32,281 INFO L82 PathProgramCache]: Analyzing trace with hash -636143535, now seen corresponding path program 1 times [2021-03-25 05:09:32,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:32,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208933993] [2021-03-25 05:09:32,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:32,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:32,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:32,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:09:32,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:32,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:32,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:09:32,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208933993] [2021-03-25 05:09:32,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:32,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:09:32,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240925468] [2021-03-25 05:09:32,326 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 05:09:32,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:32,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 05:09:32,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 05:09:32,327 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 170 [2021-03-25 05:09:32,328 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 267 flow. Second operand has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:32,328 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:32,328 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 170 [2021-03-25 05:09:32,328 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:32,355 INFO L129 PetriNetUnfolder]: 60/228 cut-off events. [2021-03-25 05:09:32,356 INFO L130 PetriNetUnfolder]: For 1447/1498 co-relation queries the response was YES. [2021-03-25 05:09:32,356 INFO L84 FinitePrefix]: Finished finitePrefix Result has 907 conditions, 228 events. 60/228 cut-off events. For 1447/1498 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1421 event pairs, 9 based on Foata normal form. 17/232 useless extension candidates. Maximal degree in co-relation 884. Up to 83 conditions per place. [2021-03-25 05:09:32,357 INFO L132 encePairwiseOnDemand]: 167/170 looper letters, 3 selfloop transitions, 3 changer transitions 0/39 dead transitions. [2021-03-25 05:09:32,357 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 39 transitions, 279 flow [2021-03-25 05:09:32,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:09:32,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:09:32,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 459 transitions. [2021-03-25 05:09:32,358 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9 [2021-03-25 05:09:32,358 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 459 transitions. [2021-03-25 05:09:32,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 459 transitions. [2021-03-25 05:09:32,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:32,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 459 transitions. [2021-03-25 05:09:32,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:32,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:32,360 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:32,360 INFO L185 Difference]: Start difference. First operand has 52 places, 39 transitions, 267 flow. Second operand 3 states and 459 transitions. [2021-03-25 05:09:32,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 39 transitions, 279 flow [2021-03-25 05:09:32,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 39 transitions, 260 flow, removed 1 selfloop flow, removed 4 redundant places. [2021-03-25 05:09:32,362 INFO L241 Difference]: Finished difference. Result has 51 places, 39 transitions, 259 flow [2021-03-25 05:09:32,363 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=259, PETRI_PLACES=51, PETRI_TRANSITIONS=39} [2021-03-25 05:09:32,363 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 5 predicate places. [2021-03-25 05:09:32,363 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:32,363 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 39 transitions, 259 flow [2021-03-25 05:09:32,363 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 39 transitions, 259 flow [2021-03-25 05:09:32,363 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 39 transitions, 259 flow [2021-03-25 05:09:32,383 INFO L129 PetriNetUnfolder]: 65/227 cut-off events. [2021-03-25 05:09:32,383 INFO L130 PetriNetUnfolder]: For 817/842 co-relation queries the response was YES. [2021-03-25 05:09:32,383 INFO L84 FinitePrefix]: Finished finitePrefix Result has 838 conditions, 227 events. 65/227 cut-off events. For 817/842 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1371 event pairs, 15 based on Foata normal form. 4/215 useless extension candidates. Maximal degree in co-relation 818. Up to 83 conditions per place. [2021-03-25 05:09:32,385 INFO L142 LiptonReduction]: Number of co-enabled transitions 360 [2021-03-25 05:09:32,389 INFO L154 LiptonReduction]: Checked pairs total: 159 [2021-03-25 05:09:32,389 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:09:32,389 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 26 [2021-03-25 05:09:32,390 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 39 transitions, 259 flow [2021-03-25 05:09:32,390 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:32,390 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:32,390 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:32,391 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-25 05:09:32,391 INFO L428 AbstractCegarLoop]: === Iteration 12 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:32,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:32,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1224464771, now seen corresponding path program 1 times [2021-03-25 05:09:32,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:32,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913581546] [2021-03-25 05:09:32,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:32,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:32,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 05:09:32,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:32,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 05:09:32,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:32,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:09:32,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:32,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 05:09:32,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:32,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 05:09:32,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:09:32,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913581546] [2021-03-25 05:09:32,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:32,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:09:32,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443618920] [2021-03-25 05:09:32,465 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 05:09:32,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:32,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 05:09:32,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-25 05:09:32,466 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 170 [2021-03-25 05:09:32,466 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 39 transitions, 259 flow. Second operand has 6 states, 6 states have (on average 126.0) internal successors, (756), 6 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:32,466 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:32,466 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 170 [2021-03-25 05:09:32,466 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:32,560 INFO L129 PetriNetUnfolder]: 80/270 cut-off events. [2021-03-25 05:09:32,560 INFO L130 PetriNetUnfolder]: For 1053/1096 co-relation queries the response was YES. [2021-03-25 05:09:32,561 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1114 conditions, 270 events. 80/270 cut-off events. For 1053/1096 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1701 event pairs, 1 based on Foata normal form. 25/284 useless extension candidates. Maximal degree in co-relation 1092. Up to 122 conditions per place. [2021-03-25 05:09:32,562 INFO L132 encePairwiseOnDemand]: 164/170 looper letters, 15 selfloop transitions, 18 changer transitions 0/50 dead transitions. [2021-03-25 05:09:32,562 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 50 transitions, 394 flow [2021-03-25 05:09:32,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 05:09:32,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 05:09:32,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 897 transitions. [2021-03-25 05:09:32,564 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.753781512605042 [2021-03-25 05:09:32,564 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 897 transitions. [2021-03-25 05:09:32,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 897 transitions. [2021-03-25 05:09:32,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:32,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 897 transitions. [2021-03-25 05:09:32,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 128.14285714285714) internal successors, (897), 7 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:32,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 170.0) internal successors, (1360), 8 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:32,567 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 170.0) internal successors, (1360), 8 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:32,567 INFO L185 Difference]: Start difference. First operand has 51 places, 39 transitions, 259 flow. Second operand 7 states and 897 transitions. [2021-03-25 05:09:32,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 50 transitions, 394 flow [2021-03-25 05:09:32,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 50 transitions, 389 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-03-25 05:09:32,569 INFO L241 Difference]: Finished difference. Result has 58 places, 45 transitions, 357 flow [2021-03-25 05:09:32,569 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=357, PETRI_PLACES=58, PETRI_TRANSITIONS=45} [2021-03-25 05:09:32,570 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 12 predicate places. [2021-03-25 05:09:32,570 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:32,570 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 45 transitions, 357 flow [2021-03-25 05:09:32,570 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 58 places, 45 transitions, 357 flow [2021-03-25 05:09:32,570 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 58 places, 45 transitions, 357 flow [2021-03-25 05:09:32,591 INFO L129 PetriNetUnfolder]: 70/248 cut-off events. [2021-03-25 05:09:32,591 INFO L130 PetriNetUnfolder]: For 1049/1086 co-relation queries the response was YES. [2021-03-25 05:09:32,592 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1035 conditions, 248 events. 70/248 cut-off events. For 1049/1086 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1569 event pairs, 12 based on Foata normal form. 23/255 useless extension candidates. Maximal degree in co-relation 1012. Up to 94 conditions per place. [2021-03-25 05:09:32,593 INFO L142 LiptonReduction]: Number of co-enabled transitions 406 [2021-03-25 05:09:32,599 INFO L154 LiptonReduction]: Checked pairs total: 294 [2021-03-25 05:09:32,599 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:09:32,599 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 29 [2021-03-25 05:09:32,600 INFO L480 AbstractCegarLoop]: Abstraction has has 58 places, 45 transitions, 357 flow [2021-03-25 05:09:32,600 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 126.0) internal successors, (756), 6 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:32,600 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:32,600 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:32,600 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-25 05:09:32,600 INFO L428 AbstractCegarLoop]: === Iteration 13 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:32,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:32,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1261145831, now seen corresponding path program 2 times [2021-03-25 05:09:32,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:32,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620096405] [2021-03-25 05:09:32,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:32,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:32,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:32,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 05:09:32,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:32,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 05:09:32,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:32,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-25 05:09:32,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:32,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 05:09:32,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:32,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 05:09:32,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:09:32,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620096405] [2021-03-25 05:09:32,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:32,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:09:32,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012895011] [2021-03-25 05:09:32,698 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 05:09:32,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:32,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 05:09:32,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-03-25 05:09:32,699 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 170 [2021-03-25 05:09:32,699 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 45 transitions, 357 flow. Second operand has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:32,699 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:32,699 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 170 [2021-03-25 05:09:32,699 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:32,775 INFO L129 PetriNetUnfolder]: 72/274 cut-off events. [2021-03-25 05:09:32,775 INFO L130 PetriNetUnfolder]: For 1337/1380 co-relation queries the response was YES. [2021-03-25 05:09:32,776 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1208 conditions, 274 events. 72/274 cut-off events. For 1337/1380 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 1829 event pairs, 3 based on Foata normal form. 15/278 useless extension candidates. Maximal degree in co-relation 1183. Up to 96 conditions per place. [2021-03-25 05:09:32,777 INFO L132 encePairwiseOnDemand]: 165/170 looper letters, 20 selfloop transitions, 10 changer transitions 1/48 dead transitions. [2021-03-25 05:09:32,777 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 48 transitions, 435 flow [2021-03-25 05:09:32,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:09:32,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:09:32,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 644 transitions. [2021-03-25 05:09:32,779 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7576470588235295 [2021-03-25 05:09:32,779 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 644 transitions. [2021-03-25 05:09:32,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 644 transitions. [2021-03-25 05:09:32,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:32,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 644 transitions. [2021-03-25 05:09:32,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 128.8) internal successors, (644), 5 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:32,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 170.0) internal successors, (1020), 6 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:32,782 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 170.0) internal successors, (1020), 6 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:32,782 INFO L185 Difference]: Start difference. First operand has 58 places, 45 transitions, 357 flow. Second operand 5 states and 644 transitions. [2021-03-25 05:09:32,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 48 transitions, 435 flow [2021-03-25 05:09:32,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 48 transitions, 424 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-03-25 05:09:32,784 INFO L241 Difference]: Finished difference. Result has 61 places, 45 transitions, 373 flow [2021-03-25 05:09:32,785 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=373, PETRI_PLACES=61, PETRI_TRANSITIONS=45} [2021-03-25 05:09:32,785 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 15 predicate places. [2021-03-25 05:09:32,785 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:32,785 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 45 transitions, 373 flow [2021-03-25 05:09:32,785 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 45 transitions, 373 flow [2021-03-25 05:09:32,785 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 61 places, 45 transitions, 373 flow [2021-03-25 05:09:32,805 INFO L129 PetriNetUnfolder]: 59/241 cut-off events. [2021-03-25 05:09:32,805 INFO L130 PetriNetUnfolder]: For 1107/1123 co-relation queries the response was YES. [2021-03-25 05:09:32,806 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1031 conditions, 241 events. 59/241 cut-off events. For 1107/1123 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 1615 event pairs, 15 based on Foata normal form. 11/237 useless extension candidates. Maximal degree in co-relation 1006. Up to 94 conditions per place. [2021-03-25 05:09:32,807 INFO L142 LiptonReduction]: Number of co-enabled transitions 406 [2021-03-25 05:09:32,813 INFO L154 LiptonReduction]: Checked pairs total: 306 [2021-03-25 05:09:32,813 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:09:32,813 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 28 [2021-03-25 05:09:32,813 INFO L480 AbstractCegarLoop]: Abstraction has has 61 places, 45 transitions, 373 flow [2021-03-25 05:09:32,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:32,813 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:32,813 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:32,814 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-25 05:09:32,814 INFO L428 AbstractCegarLoop]: === Iteration 14 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:32,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:32,814 INFO L82 PathProgramCache]: Analyzing trace with hash -153541455, now seen corresponding path program 1 times [2021-03-25 05:09:32,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:32,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387894673] [2021-03-25 05:09:32,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:32,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:32,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:32,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:32,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:32,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 05:09:32,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:32,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:09:32,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:09:32,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387894673] [2021-03-25 05:09:32,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:32,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:09:32,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347893521] [2021-03-25 05:09:32,847 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:09:32,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:32,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:09:32,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:09:32,848 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 170 [2021-03-25 05:09:32,849 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 45 transitions, 373 flow. Second operand has 4 states, 4 states have (on average 140.75) internal successors, (563), 4 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:32,849 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:32,849 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 170 [2021-03-25 05:09:32,849 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:32,955 INFO L129 PetriNetUnfolder]: 380/839 cut-off events. [2021-03-25 05:09:32,955 INFO L130 PetriNetUnfolder]: For 1769/2041 co-relation queries the response was YES. [2021-03-25 05:09:32,957 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2564 conditions, 839 events. 380/839 cut-off events. For 1769/2041 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 6243 event pairs, 154 based on Foata normal form. 163/902 useless extension candidates. Maximal degree in co-relation 2537. Up to 522 conditions per place. [2021-03-25 05:09:32,958 INFO L132 encePairwiseOnDemand]: 164/170 looper letters, 9 selfloop transitions, 8 changer transitions 5/55 dead transitions. [2021-03-25 05:09:32,958 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 55 transitions, 429 flow [2021-03-25 05:09:32,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:09:32,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:09:32,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 718 transitions. [2021-03-25 05:09:32,960 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8447058823529412 [2021-03-25 05:09:32,960 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 718 transitions. [2021-03-25 05:09:32,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 718 transitions. [2021-03-25 05:09:32,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:32,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 718 transitions. [2021-03-25 05:09:32,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 143.6) internal successors, (718), 5 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:32,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 170.0) internal successors, (1020), 6 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:32,963 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 170.0) internal successors, (1020), 6 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:32,963 INFO L185 Difference]: Start difference. First operand has 61 places, 45 transitions, 373 flow. Second operand 5 states and 718 transitions. [2021-03-25 05:09:32,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 55 transitions, 429 flow [2021-03-25 05:09:32,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 55 transitions, 409 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-03-25 05:09:32,968 INFO L241 Difference]: Finished difference. Result has 65 places, 47 transitions, 375 flow [2021-03-25 05:09:32,968 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=375, PETRI_PLACES=65, PETRI_TRANSITIONS=47} [2021-03-25 05:09:32,968 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 19 predicate places. [2021-03-25 05:09:32,968 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:32,968 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 47 transitions, 375 flow [2021-03-25 05:09:32,968 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 47 transitions, 375 flow [2021-03-25 05:09:32,969 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 65 places, 47 transitions, 375 flow [2021-03-25 05:09:33,029 INFO L129 PetriNetUnfolder]: 381/847 cut-off events. [2021-03-25 05:09:33,030 INFO L130 PetriNetUnfolder]: For 2665/2904 co-relation queries the response was YES. [2021-03-25 05:09:33,032 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3163 conditions, 847 events. 381/847 cut-off events. For 2665/2904 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 6398 event pairs, 124 based on Foata normal form. 15/757 useless extension candidates. Maximal degree in co-relation 3135. Up to 542 conditions per place. [2021-03-25 05:09:33,037 INFO L142 LiptonReduction]: Number of co-enabled transitions 502 [2021-03-25 05:09:33,046 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 05:09:33,046 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:09:33,046 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 78 [2021-03-25 05:09:33,046 INFO L480 AbstractCegarLoop]: Abstraction has has 65 places, 47 transitions, 375 flow [2021-03-25 05:09:33,047 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 140.75) internal successors, (563), 4 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:33,047 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:33,047 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:33,047 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-25 05:09:33,047 INFO L428 AbstractCegarLoop]: === Iteration 15 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:33,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:33,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1922884160, now seen corresponding path program 1 times [2021-03-25 05:09:33,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:33,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079575593] [2021-03-25 05:09:33,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:33,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:33,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:33,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:33,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:33,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:33,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:33,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 05:09:33,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:33,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:09:33,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:09:33,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079575593] [2021-03-25 05:09:33,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:33,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:09:33,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522931596] [2021-03-25 05:09:33,091 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:09:33,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:33,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:09:33,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:09:33,092 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 170 [2021-03-25 05:09:33,092 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 47 transitions, 375 flow. Second operand has 5 states, 5 states have (on average 140.8) internal successors, (704), 5 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:33,092 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:33,092 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 170 [2021-03-25 05:09:33,092 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:33,181 INFO L129 PetriNetUnfolder]: 223/607 cut-off events. [2021-03-25 05:09:33,181 INFO L130 PetriNetUnfolder]: For 2005/3348 co-relation queries the response was YES. [2021-03-25 05:09:33,183 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2560 conditions, 607 events. 223/607 cut-off events. For 2005/3348 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 4632 event pairs, 23 based on Foata normal form. 342/885 useless extension candidates. Maximal degree in co-relation 2530. Up to 425 conditions per place. [2021-03-25 05:09:33,184 INFO L132 encePairwiseOnDemand]: 164/170 looper letters, 5 selfloop transitions, 15 changer transitions 6/55 dead transitions. [2021-03-25 05:09:33,184 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 55 transitions, 460 flow [2021-03-25 05:09:33,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 05:09:33,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 05:09:33,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1005 transitions. [2021-03-25 05:09:33,186 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8445378151260504 [2021-03-25 05:09:33,186 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1005 transitions. [2021-03-25 05:09:33,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1005 transitions. [2021-03-25 05:09:33,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:33,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1005 transitions. [2021-03-25 05:09:33,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 143.57142857142858) internal successors, (1005), 7 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:33,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 170.0) internal successors, (1360), 8 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:33,190 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 170.0) internal successors, (1360), 8 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:33,190 INFO L185 Difference]: Start difference. First operand has 65 places, 47 transitions, 375 flow. Second operand 7 states and 1005 transitions. [2021-03-25 05:09:33,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 55 transitions, 460 flow [2021-03-25 05:09:33,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 55 transitions, 431 flow, removed 2 selfloop flow, removed 5 redundant places. [2021-03-25 05:09:33,194 INFO L241 Difference]: Finished difference. Result has 69 places, 49 transitions, 405 flow [2021-03-25 05:09:33,194 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=405, PETRI_PLACES=69, PETRI_TRANSITIONS=49} [2021-03-25 05:09:33,194 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 23 predicate places. [2021-03-25 05:09:33,195 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:33,195 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 49 transitions, 405 flow [2021-03-25 05:09:33,195 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 49 transitions, 405 flow [2021-03-25 05:09:33,195 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 49 transitions, 405 flow [2021-03-25 05:09:33,218 INFO L129 PetriNetUnfolder]: 89/280 cut-off events. [2021-03-25 05:09:33,218 INFO L130 PetriNetUnfolder]: For 1214/1381 co-relation queries the response was YES. [2021-03-25 05:09:33,219 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1304 conditions, 280 events. 89/280 cut-off events. For 1214/1381 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 1759 event pairs, 11 based on Foata normal form. 7/267 useless extension candidates. Maximal degree in co-relation 1274. Up to 187 conditions per place. [2021-03-25 05:09:33,220 INFO L142 LiptonReduction]: Number of co-enabled transitions 388 [2021-03-25 05:09:33,685 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2021-03-25 05:09:34,015 WARN L205 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 80 [2021-03-25 05:09:34,119 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-03-25 05:09:34,266 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 66 [2021-03-25 05:09:34,534 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 85 [2021-03-25 05:09:34,704 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 66 [2021-03-25 05:09:34,960 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 85 [2021-03-25 05:09:35,018 INFO L154 LiptonReduction]: Checked pairs total: 104 [2021-03-25 05:09:35,018 INFO L156 LiptonReduction]: Total number of compositions: 9 [2021-03-25 05:09:35,018 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1823 [2021-03-25 05:09:35,018 INFO L480 AbstractCegarLoop]: Abstraction has has 68 places, 46 transitions, 415 flow [2021-03-25 05:09:35,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 140.8) internal successors, (704), 5 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:35,019 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:35,019 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:35,019 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-25 05:09:35,019 INFO L428 AbstractCegarLoop]: === Iteration 16 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:35,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:35,019 INFO L82 PathProgramCache]: Analyzing trace with hash -952766500, now seen corresponding path program 1 times [2021-03-25 05:09:35,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:35,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787524829] [2021-03-25 05:09:35,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:35,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:35,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:35,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:35,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:35,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:35,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:35,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:35,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:35,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 05:09:35,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:35,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:09:35,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:09:35,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787524829] [2021-03-25 05:09:35,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:35,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 05:09:35,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025325796] [2021-03-25 05:09:35,062 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 05:09:35,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:35,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 05:09:35,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 05:09:35,063 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 177 [2021-03-25 05:09:35,064 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 46 transitions, 415 flow. Second operand has 6 states, 6 states have (on average 147.83333333333334) internal successors, (887), 6 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:35,064 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:35,064 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 177 [2021-03-25 05:09:35,064 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:35,110 INFO L129 PetriNetUnfolder]: 37/144 cut-off events. [2021-03-25 05:09:35,111 INFO L130 PetriNetUnfolder]: For 659/714 co-relation queries the response was YES. [2021-03-25 05:09:35,111 INFO L84 FinitePrefix]: Finished finitePrefix Result has 720 conditions, 144 events. 37/144 cut-off events. For 659/714 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 710 event pairs, 0 based on Foata normal form. 46/184 useless extension candidates. Maximal degree in co-relation 688. Up to 95 conditions per place. [2021-03-25 05:09:35,111 INFO L132 encePairwiseOnDemand]: 171/177 looper letters, 2 selfloop transitions, 11 changer transitions 17/44 dead transitions. [2021-03-25 05:09:35,111 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 44 transitions, 420 flow [2021-03-25 05:09:35,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 05:09:35,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 05:09:35,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1047 transitions. [2021-03-25 05:09:35,113 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8450363196125908 [2021-03-25 05:09:35,113 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1047 transitions. [2021-03-25 05:09:35,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1047 transitions. [2021-03-25 05:09:35,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:35,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1047 transitions. [2021-03-25 05:09:35,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 149.57142857142858) internal successors, (1047), 7 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:35,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:35,117 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:35,117 INFO L185 Difference]: Start difference. First operand has 68 places, 46 transitions, 415 flow. Second operand 7 states and 1047 transitions. [2021-03-25 05:09:35,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 44 transitions, 420 flow [2021-03-25 05:09:35,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 44 transitions, 339 flow, removed 25 selfloop flow, removed 9 redundant places. [2021-03-25 05:09:35,119 INFO L241 Difference]: Finished difference. Result has 63 places, 27 transitions, 215 flow [2021-03-25 05:09:35,119 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=215, PETRI_PLACES=63, PETRI_TRANSITIONS=27} [2021-03-25 05:09:35,119 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 17 predicate places. [2021-03-25 05:09:35,119 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:35,119 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 27 transitions, 215 flow [2021-03-25 05:09:35,119 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 27 transitions, 215 flow [2021-03-25 05:09:35,120 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 58 places, 27 transitions, 215 flow [2021-03-25 05:09:35,123 INFO L129 PetriNetUnfolder]: 7/36 cut-off events. [2021-03-25 05:09:35,123 INFO L130 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2021-03-25 05:09:35,123 INFO L84 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 36 events. 7/36 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 62 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 145. Up to 14 conditions per place. [2021-03-25 05:09:35,123 INFO L142 LiptonReduction]: Number of co-enabled transitions 28 [2021-03-25 05:09:35,686 WARN L205 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 182 [2021-03-25 05:09:35,891 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2021-03-25 05:09:37,222 WARN L205 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 336 DAG size of output: 264 [2021-03-25 05:09:37,724 WARN L205 SmtUtils]: Spent 500.00 ms on a formula simplification that was a NOOP. DAG size: 244 [2021-03-25 05:09:37,931 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2021-03-25 05:09:38,327 WARN L205 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 80 [2021-03-25 05:09:38,442 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-03-25 05:09:38,698 WARN L205 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2021-03-25 05:09:38,924 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2021-03-25 05:09:39,504 WARN L205 SmtUtils]: Spent 577.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2021-03-25 05:09:40,083 WARN L205 SmtUtils]: Spent 578.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2021-03-25 05:09:40,346 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-03-25 05:09:40,457 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-03-25 05:09:40,459 INFO L154 LiptonReduction]: Checked pairs total: 9 [2021-03-25 05:09:40,460 INFO L156 LiptonReduction]: Total number of compositions: 7 [2021-03-25 05:09:40,460 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5341 [2021-03-25 05:09:40,460 INFO L480 AbstractCegarLoop]: Abstraction has has 54 places, 23 transitions, 211 flow [2021-03-25 05:09:40,460 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 147.83333333333334) internal successors, (887), 6 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:09:40,460 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:40,460 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:40,460 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-25 05:09:40,460 INFO L428 AbstractCegarLoop]: === Iteration 17 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:40,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:40,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1918090775, now seen corresponding path program 1 times [2021-03-25 05:09:40,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:40,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450488646] [2021-03-25 05:09:40,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:40,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 05:09:40,482 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 05:09:40,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 05:09:40,502 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 05:09:40,524 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-25 05:09:40,524 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-25 05:09:40,525 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-25 05:09:40,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 05:09:40 BasicIcfg [2021-03-25 05:09:40,570 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 05:09:40,571 INFO L168 Benchmark]: Toolchain (without parser) took 22750.64 ms. Allocated memory was 341.8 MB in the beginning and 813.7 MB in the end (delta: 471.9 MB). Free memory was 304.7 MB in the beginning and 388.3 MB in the end (delta: -83.7 MB). Peak memory consumption was 388.4 MB. Max. memory is 16.0 GB. [2021-03-25 05:09:40,571 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 341.8 MB. Free memory is still 323.3 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 05:09:40,571 INFO L168 Benchmark]: CACSL2BoogieTranslator took 496.65 ms. Allocated memory is still 341.8 MB. Free memory was 304.5 MB in the beginning and 302.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.0 GB. [2021-03-25 05:09:40,571 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.62 ms. Allocated memory is still 341.8 MB. Free memory was 302.8 MB in the beginning and 299.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:09:40,571 INFO L168 Benchmark]: Boogie Preprocessor took 42.23 ms. Allocated memory is still 341.8 MB. Free memory was 299.6 MB in the beginning and 297.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:09:40,572 INFO L168 Benchmark]: RCFGBuilder took 1297.92 ms. Allocated memory is still 341.8 MB. Free memory was 297.5 MB in the beginning and 254.3 MB in the end (delta: 43.2 MB). Peak memory consumption was 137.6 MB. Max. memory is 16.0 GB. [2021-03-25 05:09:40,572 INFO L168 Benchmark]: TraceAbstraction took 20847.11 ms. Allocated memory was 341.8 MB in the beginning and 813.7 MB in the end (delta: 471.9 MB). Free memory was 253.2 MB in the beginning and 388.3 MB in the end (delta: -135.1 MB). Peak memory consumption was 335.7 MB. Max. memory is 16.0 GB. [2021-03-25 05:09:40,572 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 341.8 MB. Free memory is still 323.3 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 496.65 ms. Allocated memory is still 341.8 MB. Free memory was 304.5 MB in the beginning and 302.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 61.62 ms. Allocated memory is still 341.8 MB. Free memory was 302.8 MB in the beginning and 299.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 42.23 ms. Allocated memory is still 341.8 MB. Free memory was 299.6 MB in the beginning and 297.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 1297.92 ms. Allocated memory is still 341.8 MB. Free memory was 297.5 MB in the beginning and 254.3 MB in the end (delta: 43.2 MB). Peak memory consumption was 137.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 20847.11 ms. Allocated memory was 341.8 MB in the beginning and 813.7 MB in the end (delta: 471.9 MB). Free memory was 253.2 MB in the beginning and 388.3 MB in the end (delta: -135.1 MB). Peak memory consumption was 335.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4841.1ms, 100 PlacesBefore, 46 PlacesAfterwards, 92 TransitionsBefore, 37 TransitionsAfterwards, 1578 CoEnabledTransitionPairs, 6 FixpointIterations, 26 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 62 TotalNumberOfCompositions, 2818 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1397, positive: 1318, positive conditional: 0, positive unconditional: 1318, negative: 79, negative conditional: 0, negative unconditional: 79, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 742, positive: 728, positive conditional: 0, positive unconditional: 728, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 742, positive: 728, positive conditional: 0, positive unconditional: 728, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1397, positive: 590, positive conditional: 0, positive unconditional: 590, negative: 65, negative conditional: 0, negative unconditional: 65, unknown: 742, unknown conditional: 0, unknown unconditional: 742] , Statistics on independence cache: Total cache size (in pairs): 95, Positive cache size: 88, Positive conditional cache size: 0, Positive unconditional cache size: 88, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4435.8ms, 43 PlacesBefore, 33 PlacesAfterwards, 34 TransitionsBefore, 24 TransitionsAfterwards, 318 CoEnabledTransitionPairs, 3 FixpointIterations, 6 TrivialSequentialCompositions, 5 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 11 TotalNumberOfCompositions, 863 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 302, positive: 246, positive conditional: 0, positive unconditional: 246, negative: 56, negative conditional: 0, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 46, positive: 34, positive conditional: 0, positive unconditional: 34, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 46, positive: 34, positive conditional: 0, positive unconditional: 34, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 302, positive: 212, positive conditional: 0, positive unconditional: 212, negative: 44, negative conditional: 0, negative unconditional: 44, unknown: 46, unknown conditional: 0, unknown unconditional: 46] , Statistics on independence cache: Total cache size (in pairs): 77, Positive cache size: 63, Positive conditional cache size: 0, Positive unconditional cache size: 63, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1095.3ms, 37 PlacesBefore, 31 PlacesAfterwards, 24 TransitionsBefore, 22 TransitionsAfterwards, 212 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 594 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 166, positive: 118, positive conditional: 0, positive unconditional: 118, negative: 48, negative conditional: 0, negative unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 166, positive: 118, positive conditional: 0, positive unconditional: 118, negative: 45, negative conditional: 0, negative unconditional: 45, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 80, Positive cache size: 63, Positive conditional cache size: 0, Positive unconditional cache size: 63, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.2ms, 32 PlacesBefore, 32 PlacesAfterwards, 24 TransitionsBefore, 24 TransitionsAfterwards, 230 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 186 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 38, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 38, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 80, Positive cache size: 63, Positive conditional cache size: 0, Positive unconditional cache size: 63, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.5ms, 34 PlacesBefore, 34 PlacesAfterwards, 24 TransitionsBefore, 24 TransitionsAfterwards, 230 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 216 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 53, positive: 37, positive conditional: 0, positive unconditional: 37, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 53, positive: 36, positive conditional: 0, positive unconditional: 36, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 81, Positive cache size: 64, Positive conditional cache size: 0, Positive unconditional cache size: 64, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.8ms, 36 PlacesBefore, 36 PlacesAfterwards, 26 TransitionsBefore, 26 TransitionsAfterwards, 244 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 148 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 23, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 23, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 84, Positive cache size: 66, Positive conditional cache size: 0, Positive unconditional cache size: 66, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.1ms, 39 PlacesBefore, 39 PlacesAfterwards, 26 TransitionsBefore, 26 TransitionsAfterwards, 244 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 144 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 18, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 18, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 87, Positive cache size: 69, Positive conditional cache size: 0, Positive unconditional cache size: 69, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11.0ms, 41 PlacesBefore, 41 PlacesAfterwards, 28 TransitionsBefore, 28 TransitionsAfterwards, 260 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 142 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 16, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 16, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 88, Positive cache size: 70, Positive conditional cache size: 0, Positive unconditional cache size: 70, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 24.5ms, 45 PlacesBefore, 45 PlacesAfterwards, 35 TransitionsBefore, 35 TransitionsAfterwards, 326 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 95 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 15, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 15, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 88, Positive cache size: 70, Positive conditional cache size: 0, Positive unconditional cache size: 70, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 28.9ms, 49 PlacesBefore, 49 PlacesAfterwards, 36 TransitionsBefore, 36 TransitionsAfterwards, 336 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 121 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 16, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 16, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 88, Positive cache size: 70, Positive conditional cache size: 0, Positive unconditional cache size: 70, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 24.9ms, 52 PlacesBefore, 52 PlacesAfterwards, 39 TransitionsBefore, 39 TransitionsAfterwards, 360 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 204 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 51, positive: 40, positive conditional: 0, positive unconditional: 40, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 51, positive: 39, positive conditional: 0, positive unconditional: 39, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 89, Positive cache size: 71, Positive conditional cache size: 0, Positive unconditional cache size: 71, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 26.2ms, 51 PlacesBefore, 51 PlacesAfterwards, 39 TransitionsBefore, 39 TransitionsAfterwards, 360 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 159 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 32, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 32, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 89, Positive cache size: 71, Positive conditional cache size: 0, Positive unconditional cache size: 71, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 28.7ms, 58 PlacesBefore, 58 PlacesAfterwards, 45 TransitionsBefore, 45 TransitionsAfterwards, 406 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 294 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 79, positive: 64, positive conditional: 0, positive unconditional: 64, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 79, positive: 63, positive conditional: 0, positive unconditional: 63, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 90, Positive cache size: 72, Positive conditional cache size: 0, Positive unconditional cache size: 72, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 27.6ms, 61 PlacesBefore, 61 PlacesAfterwards, 45 TransitionsBefore, 45 TransitionsAfterwards, 406 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 306 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 90, positive: 74, positive conditional: 0, positive unconditional: 74, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 90, positive: 74, positive conditional: 0, positive unconditional: 74, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 90, Positive cache size: 72, Positive conditional cache size: 0, Positive unconditional cache size: 72, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 77.8ms, 65 PlacesBefore, 65 PlacesAfterwards, 47 TransitionsBefore, 47 TransitionsAfterwards, 502 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 90, Positive cache size: 72, Positive conditional cache size: 0, Positive unconditional cache size: 72, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1823.2ms, 69 PlacesBefore, 68 PlacesAfterwards, 49 TransitionsBefore, 46 TransitionsAfterwards, 388 CoEnabledTransitionPairs, 3 FixpointIterations, 1 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 9 TotalNumberOfCompositions, 104 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 104, positive: 104, positive conditional: 0, positive unconditional: 104, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 5, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 104, positive: 99, positive conditional: 0, positive unconditional: 99, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 5, unknown conditional: 0, unknown unconditional: 5] , Statistics on independence cache: Total cache size (in pairs): 67, Positive cache size: 63, Positive conditional cache size: 0, Positive unconditional cache size: 63, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5340.1ms, 63 PlacesBefore, 54 PlacesAfterwards, 27 TransitionsBefore, 23 TransitionsAfterwards, 28 CoEnabledTransitionPairs, 3 FixpointIterations, 4 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 7 TotalNumberOfCompositions, 9 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 9, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 30, Positive cache size: 29, Positive conditional cache size: 0, Positive unconditional cache size: 29, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L710] 0 _Bool main$tmp_guard0; [L711] 0 _Bool main$tmp_guard1; [L713] 0 int x = 0; [L715] 0 int y = 0; [L716] 0 _Bool y$flush_delayed; [L717] 0 int y$mem_tmp; [L718] 0 _Bool y$r_buff0_thd0; [L719] 0 _Bool y$r_buff0_thd1; [L720] 0 _Bool y$r_buff0_thd2; [L721] 0 _Bool y$r_buff0_thd3; [L722] 0 _Bool y$r_buff1_thd0; [L723] 0 _Bool y$r_buff1_thd1; [L724] 0 _Bool y$r_buff1_thd2; [L725] 0 _Bool y$r_buff1_thd3; [L726] 0 _Bool y$read_delayed; [L727] 0 int *y$read_delayed_var; [L728] 0 int y$w_buff0; [L729] 0 _Bool y$w_buff0_used; [L730] 0 int y$w_buff1; [L731] 0 _Bool y$w_buff1_used; [L733] 0 int z = 0; [L734] 0 _Bool weak$$choice0; [L735] 0 _Bool weak$$choice2; [L811] 0 pthread_t t2498; [L812] FCALL, FORK 0 pthread_create(&t2498, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L813] 0 pthread_t t2499; [L814] FCALL, FORK 0 pthread_create(&t2499, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L815] 0 pthread_t t2500; [L816] FCALL, FORK 0 pthread_create(&t2500, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L774] 3 y$w_buff1 = y$w_buff0 [L775] 3 y$w_buff0 = 2 [L776] 3 y$w_buff1_used = y$w_buff0_used [L777] 3 y$w_buff0_used = (_Bool)1 [L18] COND FALSE 3 !(!expression) [L779] 3 y$r_buff1_thd0 = y$r_buff0_thd0 [L780] 3 y$r_buff1_thd1 = y$r_buff0_thd1 [L781] 3 y$r_buff1_thd2 = y$r_buff0_thd2 [L782] 3 y$r_buff1_thd3 = y$r_buff0_thd3 [L783] 3 y$r_buff0_thd3 = (_Bool)1 [L786] 3 z = 1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L739] 1 z = 2 [L742] 1 x = 1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L754] 2 x = 2 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L757] 2 y = 1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L789] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L789] 3 y = y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L790] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L790] 3 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L791] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L791] 3 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L792] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L792] 3 y$r_buff0_thd3 = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L793] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 [L793] 3 y$r_buff1_thd3 = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 [L760] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L760] EXPR 2 y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y [L760] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L760] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L761] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L761] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L762] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L762] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L763] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L763] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L764] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 [L764] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 [L767] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L769] 2 return 0; [L747] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L749] 1 return 0; [L796] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L798] 3 return 0; [L818] 0 main$tmp_guard0 = __unbuffered_cnt == 3 [L3] COND FALSE 0 !(!cond) [L822] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L822] EXPR 0 y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y [L822] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L822] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L823] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L823] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L824] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L824] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L825] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L825] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L826] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 [L826] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 [L829] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L830] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L831] 0 y$flush_delayed = weak$$choice2 [L832] 0 y$mem_tmp = y [L833] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L833] 0 y = !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L834] EXPR 0 weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L834] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0) [L834] EXPR 0 weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L834] 0 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L835] EXPR 0 weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L835] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1) [L835] EXPR 0 weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L835] 0 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L836] EXPR 0 weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L836] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used) [L836] EXPR 0 weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L836] 0 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L837] EXPR 0 weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L837] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0) [L837] EXPR 0 weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L837] 0 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L838] EXPR 0 weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L838] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0) [L838] EXPR 0 weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L838] 0 y$r_buff0_thd0 = weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L839] EXPR 0 weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L839] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0) [L839] EXPR 0 weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L839] 0 y$r_buff1_thd0 = weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L840] 0 main$tmp_guard1 = !(x == 2 && y == 2 && z == 2) [L841] EXPR 0 y$flush_delayed ? y$mem_tmp : y [L841] 0 y = y$flush_delayed ? y$mem_tmp : y [L842] 0 y$flush_delayed = (_Bool)0 [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\result={0:0}, \result={0:0}, __unbuffered_cnt=3, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=51, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 94 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 20698.1ms, OverallIterations: 17, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1190.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4958.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 61 SDtfs, 33 SDslu, 18 SDs, 0 SdLazy, 313 SolverSat, 76 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 287.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 363.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=415occurred in iteration=15, InterpolantAutomatonStates: 74, 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: 38.4ms SsaConstructionTime, 439.8ms SatisfiabilityAnalysisTime, 845.7ms InterpolantComputationTime, 236 NumberOfCodeBlocks, 236 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 202 ConstructedInterpolants, 0 QuantifiedInterpolants, 1448 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 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 RESULT: Ultimate proved your program to be incorrect! Received shutdown request...