/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-lit/qw2004-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 05:14:26,816 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 05:14:26,818 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 05:14:26,852 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 05:14:26,852 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 05:14:26,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 05:14:26,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 05:14:26,863 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 05:14:26,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 05:14:26,869 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 05:14:26,870 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 05:14:26,871 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 05:14:26,871 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 05:14:26,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 05:14:26,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 05:14:26,876 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 05:14:26,878 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 05:14:26,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 05:14:26,881 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 05:14:26,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 05:14:26,894 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 05:14:26,895 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 05:14:26,896 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 05:14:26,897 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 05:14:26,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 05:14:26,906 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 05:14:26,907 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 05:14:26,908 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 05:14:26,909 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 05:14:26,909 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 05:14:26,910 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 05:14:26,910 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 05:14:26,911 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 05:14:26,911 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 05:14:26,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 05:14:26,912 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 05:14:26,913 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 05:14:26,932 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 05:14:26,932 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 05:14:26,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 05:14:26,934 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 05:14:26,934 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 05:14:26,934 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 05:14:26,934 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 05:14:26,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 05:14:26,934 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 05:14:26,935 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 05:14:26,935 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 05:14:26,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 05:14:26,935 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 05:14:26,935 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 05:14:26,935 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 05:14:26,935 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 05:14:26,936 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 05:14:26,936 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 05:14:26,936 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 05:14:26,936 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 05:14:26,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 05:14:26,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 05:14:26,936 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 05:14:26,937 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 05:14:26,937 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 05:14:26,937 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 05:14:26,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 05:14:26,937 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 05:14:26,937 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 05:14:26,937 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 05:14:26,937 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 05:14:27,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 05:14:27,308 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 05:14:27,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 05:14:27,311 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 05:14:27,312 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 05:14:27,313 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/qw2004-1.i [2021-03-25 05:14:27,383 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faa49fe44/f1fec38cb2764fc980368996cd89b3d7/FLAG2d419ce5f [2021-03-25 05:14:27,923 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 05:14:27,923 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-1.i [2021-03-25 05:14:27,932 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faa49fe44/f1fec38cb2764fc980368996cd89b3d7/FLAG2d419ce5f [2021-03-25 05:14:28,336 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faa49fe44/f1fec38cb2764fc980368996cd89b3d7 [2021-03-25 05:14:28,338 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 05:14:28,339 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 05:14:28,340 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 05:14:28,340 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 05:14:28,345 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 05:14:28,345 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:14:28" (1/1) ... [2021-03-25 05:14:28,346 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@444b6d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:14:28, skipping insertion in model container [2021-03-25 05:14:28,346 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:14:28" (1/1) ... [2021-03-25 05:14:28,354 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 05:14:28,385 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 05:14:28,666 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-lit/qw2004-1.i[30003,30016] [2021-03-25 05:14:28,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:14:28,694 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 05:14:28,737 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-lit/qw2004-1.i[30003,30016] [2021-03-25 05:14:28,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:14:28,820 INFO L208 MainTranslator]: Completed translation [2021-03-25 05:14:28,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:14:28 WrapperNode [2021-03-25 05:14:28,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 05:14:28,821 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 05:14:28,822 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 05:14:28,822 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 05:14:28,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:14:28" (1/1) ... [2021-03-25 05:14:28,839 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:14:28" (1/1) ... [2021-03-25 05:14:28,857 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 05:14:28,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 05:14:28,858 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 05:14:28,858 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 05:14:28,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:14:28" (1/1) ... [2021-03-25 05:14:28,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:14:28" (1/1) ... [2021-03-25 05:14:28,868 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:14:28" (1/1) ... [2021-03-25 05:14:28,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:14:28" (1/1) ... [2021-03-25 05:14:28,872 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:14:28" (1/1) ... [2021-03-25 05:14:28,874 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:14:28" (1/1) ... [2021-03-25 05:14:28,876 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:14:28" (1/1) ... [2021-03-25 05:14:28,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 05:14:28,879 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 05:14:28,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 05:14:28,879 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 05:14:28,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:14:28" (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 05:14:28,944 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2021-03-25 05:14:28,944 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2021-03-25 05:14:28,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 05:14:28,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 05:14:28,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 05:14:28,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 05:14:28,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 05:14:28,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 05:14:28,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 05:14:28,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 05:14:28,949 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 05:14:29,324 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 05:14:29,324 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2021-03-25 05:14:29,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:14:29 BoogieIcfgContainer [2021-03-25 05:14:29,326 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 05:14:29,327 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 05:14:29,327 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 05:14:29,330 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 05:14:29,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 05:14:28" (1/3) ... [2021-03-25 05:14:29,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dd562f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:14:29, skipping insertion in model container [2021-03-25 05:14:29,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:14:28" (2/3) ... [2021-03-25 05:14:29,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dd562f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:14:29, skipping insertion in model container [2021-03-25 05:14:29,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:14:29" (3/3) ... [2021-03-25 05:14:29,333 INFO L111 eAbstractionObserver]: Analyzing ICFG qw2004-1.i [2021-03-25 05:14:29,338 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 05:14:29,342 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 05:14:29,342 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 05:14:29,363 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,363 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,363 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,363 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,364 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,364 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,364 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,364 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,364 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,365 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,365 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,365 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,365 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,365 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,365 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,365 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,366 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,366 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,366 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,366 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,366 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,366 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,367 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,367 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,367 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,367 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,367 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,367 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,368 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,368 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,368 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,368 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,368 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,369 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,369 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,369 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,369 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,369 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,369 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,370 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,370 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,370 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,370 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,370 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,371 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,371 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,371 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,371 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,371 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,371 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,372 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,372 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,372 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,372 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,372 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,372 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,373 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,373 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,373 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,373 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,375 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,375 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,375 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_dec_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,376 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,376 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_dec_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,376 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,376 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,376 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,376 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,376 WARN L313 ript$VariableManager]: TermVariabe |BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,377 WARN L313 ript$VariableManager]: TermVariabe BCSP_PnpStopThread1of1ForFork0_BCSP_IoDecrement_~pending~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:14:29,378 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 05:14:29,394 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-25 05:14:29,412 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 05:14:29,412 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 05:14:29,412 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 05:14:29,412 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 05:14:29,413 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 05:14:29,413 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 05:14:29,413 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 05:14:29,413 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 05:14:29,423 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 89 places, 91 transitions, 187 flow [2021-03-25 05:14:29,465 INFO L129 PetriNetUnfolder]: 6/90 cut-off events. [2021-03-25 05:14:29,465 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:14:29,469 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 90 events. 6/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 89 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 70. Up to 3 conditions per place. [2021-03-25 05:14:29,470 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 91 transitions, 187 flow [2021-03-25 05:14:29,474 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 90 transitions, 183 flow [2021-03-25 05:14:29,475 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:14:29,483 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 88 places, 90 transitions, 183 flow [2021-03-25 05:14:29,485 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 88 places, 90 transitions, 183 flow [2021-03-25 05:14:29,487 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 88 places, 90 transitions, 183 flow [2021-03-25 05:14:29,504 INFO L129 PetriNetUnfolder]: 6/90 cut-off events. [2021-03-25 05:14:29,504 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:14:29,505 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 90 events. 6/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 88 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 70. Up to 3 conditions per place. [2021-03-25 05:14:29,508 INFO L142 LiptonReduction]: Number of co-enabled transitions 2208 [2021-03-25 05:14:31,054 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2021-03-25 05:14:31,174 INFO L154 LiptonReduction]: Checked pairs total: 1756 [2021-03-25 05:14:31,175 INFO L156 LiptonReduction]: Total number of compositions: 74 [2021-03-25 05:14:31,180 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1705 [2021-03-25 05:14:31,187 INFO L129 PetriNetUnfolder]: 4/23 cut-off events. [2021-03-25 05:14:31,187 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:14:31,188 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:14:31,188 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:14:31,188 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:14:31,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:14:31,193 INFO L82 PathProgramCache]: Analyzing trace with hash -88710408, now seen corresponding path program 1 times [2021-03-25 05:14:31,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:14:31,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983348643] [2021-03-25 05:14:31,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:14:31,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:14:31,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:14:31,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:14:31,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:14:31,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:14:31,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:14:31,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:14:31,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:14:31,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983348643] [2021-03-25 05:14:31,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:14:31,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:14:31,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180432842] [2021-03-25 05:14:31,425 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 05:14:31,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:14:31,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 05:14:31,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 05:14:31,442 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 165 [2021-03-25 05:14:31,447 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 37 transitions, 77 flow. Second operand has 3 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 05:14:31,447 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:14:31,447 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 165 [2021-03-25 05:14:31,448 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:14:31,484 INFO L129 PetriNetUnfolder]: 8/70 cut-off events. [2021-03-25 05:14:31,484 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:14:31,486 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 70 events. 8/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 274 event pairs, 0 based on Foata normal form. 8/65 useless extension candidates. Maximal degree in co-relation 70. Up to 6 conditions per place. [2021-03-25 05:14:31,487 INFO L132 encePairwiseOnDemand]: 159/165 looper letters, 3 selfloop transitions, 3 changer transitions 0/34 dead transitions. [2021-03-25 05:14:31,488 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 34 transitions, 83 flow [2021-03-25 05:14:31,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:14:31,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:14:31,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 434 transitions. [2021-03-25 05:14:31,504 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8767676767676768 [2021-03-25 05:14:31,505 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 434 transitions. [2021-03-25 05:14:31,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 434 transitions. [2021-03-25 05:14:31,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:14:31,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 434 transitions. [2021-03-25 05:14:31,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:31,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:31,523 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:31,525 INFO L185 Difference]: Start difference. First operand has 35 places, 37 transitions, 77 flow. Second operand 3 states and 434 transitions. [2021-03-25 05:14:31,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 34 transitions, 83 flow [2021-03-25 05:14:31,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 34 transitions, 82 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 05:14:31,529 INFO L241 Difference]: Finished difference. Result has 36 places, 34 transitions, 86 flow [2021-03-25 05:14:31,530 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=36, PETRI_TRANSITIONS=34} [2021-03-25 05:14:31,531 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2021-03-25 05:14:31,531 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:14:31,531 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 34 transitions, 86 flow [2021-03-25 05:14:31,532 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 34 transitions, 86 flow [2021-03-25 05:14:31,532 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 34 transitions, 86 flow [2021-03-25 05:14:31,541 INFO L129 PetriNetUnfolder]: 8/70 cut-off events. [2021-03-25 05:14:31,541 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 05:14:31,543 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 70 events. 8/70 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 270 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 73. Up to 6 conditions per place. [2021-03-25 05:14:31,544 INFO L142 LiptonReduction]: Number of co-enabled transitions 368 [2021-03-25 05:14:32,196 INFO L154 LiptonReduction]: Checked pairs total: 405 [2021-03-25 05:14:32,197 INFO L156 LiptonReduction]: Total number of compositions: 17 [2021-03-25 05:14:32,197 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 666 [2021-03-25 05:14:32,198 INFO L480 AbstractCegarLoop]: Abstraction has has 22 places, 19 transitions, 56 flow [2021-03-25 05:14:32,198 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 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 05:14:32,198 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:14:32,199 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:14:32,199 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 05:14:32,199 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:14:32,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:14:32,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1533776373, now seen corresponding path program 1 times [2021-03-25 05:14:32,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:14:32,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140886350] [2021-03-25 05:14:32,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:14:32,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:14:32,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:14:32,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:14:32,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:14:32,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:14:32,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:14:32,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:14:32,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:14:32,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140886350] [2021-03-25 05:14:32,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:14:32,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:14:32,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777303873] [2021-03-25 05:14:32,245 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 05:14:32,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:14:32,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 05:14:32,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 05:14:32,247 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 182 [2021-03-25 05:14:32,248 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 19 transitions, 56 flow. Second operand has 3 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 05:14:32,248 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:14:32,248 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 182 [2021-03-25 05:14:32,248 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:14:32,264 INFO L129 PetriNetUnfolder]: 4/34 cut-off events. [2021-03-25 05:14:32,264 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 05:14:32,264 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 34 events. 4/34 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 115 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 51. Up to 11 conditions per place. [2021-03-25 05:14:32,265 INFO L132 encePairwiseOnDemand]: 179/182 looper letters, 7 selfloop transitions, 1 changer transitions 0/20 dead transitions. [2021-03-25 05:14:32,265 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 20 transitions, 74 flow [2021-03-25 05:14:32,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:14:32,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:14:32,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 466 transitions. [2021-03-25 05:14:32,267 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8534798534798534 [2021-03-25 05:14:32,267 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 466 transitions. [2021-03-25 05:14:32,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 466 transitions. [2021-03-25 05:14:32,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:14:32,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 466 transitions. [2021-03-25 05:14:32,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:32,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 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 05:14:32,270 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 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 05:14:32,270 INFO L185 Difference]: Start difference. First operand has 22 places, 19 transitions, 56 flow. Second operand 3 states and 466 transitions. [2021-03-25 05:14:32,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 20 transitions, 74 flow [2021-03-25 05:14:32,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 20 transitions, 68 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 05:14:32,271 INFO L241 Difference]: Finished difference. Result has 23 places, 19 transitions, 57 flow [2021-03-25 05:14:32,271 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=57, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2021-03-25 05:14:32,272 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, -12 predicate places. [2021-03-25 05:14:32,272 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:14:32,272 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 23 places, 19 transitions, 57 flow [2021-03-25 05:14:32,273 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 23 places, 19 transitions, 57 flow [2021-03-25 05:14:32,273 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 23 places, 19 transitions, 57 flow [2021-03-25 05:14:32,276 INFO L129 PetriNetUnfolder]: 4/34 cut-off events. [2021-03-25 05:14:32,276 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 05:14:32,276 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 34 events. 4/34 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 125 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 42. Up to 5 conditions per place. [2021-03-25 05:14:32,277 INFO L142 LiptonReduction]: Number of co-enabled transitions 108 [2021-03-25 05:14:32,592 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2021-03-25 05:14:32,779 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2021-03-25 05:14:32,840 INFO L154 LiptonReduction]: Checked pairs total: 173 [2021-03-25 05:14:32,840 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 05:14:32,840 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 568 [2021-03-25 05:14:32,841 INFO L480 AbstractCegarLoop]: Abstraction has has 21 places, 17 transitions, 53 flow [2021-03-25 05:14:32,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 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 05:14:32,842 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:14:32,842 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-25 05:14:32,842 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 05:14:32,842 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:14:32,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:14:32,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1864713311, now seen corresponding path program 1 times [2021-03-25 05:14:32,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:14:32,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403498551] [2021-03-25 05:14:32,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:14:32,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:14:32,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:14:32,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:14:32,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:14:32,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:14:32,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:14:32,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403498551] [2021-03-25 05:14:32,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:14:32,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:14:32,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550489262] [2021-03-25 05:14:32,899 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 05:14:32,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:14:32,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 05:14:32,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 05:14:32,903 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 185 [2021-03-25 05:14:32,904 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 53 flow. Second operand has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:32,904 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:14:32,904 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 185 [2021-03-25 05:14:32,904 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:14:32,922 INFO L129 PetriNetUnfolder]: 4/39 cut-off events. [2021-03-25 05:14:32,923 INFO L130 PetriNetUnfolder]: For 7/8 co-relation queries the response was YES. [2021-03-25 05:14:32,923 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 39 events. 4/39 cut-off events. For 7/8 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 127 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 60. Up to 7 conditions per place. [2021-03-25 05:14:32,924 INFO L132 encePairwiseOnDemand]: 181/185 looper letters, 2 selfloop transitions, 2 changer transitions 1/18 dead transitions. [2021-03-25 05:14:32,924 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 18 transitions, 67 flow [2021-03-25 05:14:32,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:14:32,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:14:32,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 477 transitions. [2021-03-25 05:14:32,926 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8594594594594595 [2021-03-25 05:14:32,926 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 477 transitions. [2021-03-25 05:14:32,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 477 transitions. [2021-03-25 05:14:32,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:14:32,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 477 transitions. [2021-03-25 05:14:32,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:32,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:32,929 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:32,929 INFO L185 Difference]: Start difference. First operand has 21 places, 17 transitions, 53 flow. Second operand 3 states and 477 transitions. [2021-03-25 05:14:32,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 18 transitions, 67 flow [2021-03-25 05:14:32,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 18 transitions, 66 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 05:14:32,930 INFO L241 Difference]: Finished difference. Result has 24 places, 17 transitions, 64 flow [2021-03-25 05:14:32,930 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=24, PETRI_TRANSITIONS=17} [2021-03-25 05:14:32,931 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, -11 predicate places. [2021-03-25 05:14:32,931 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:14:32,931 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 24 places, 17 transitions, 64 flow [2021-03-25 05:14:32,931 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 24 places, 17 transitions, 64 flow [2021-03-25 05:14:32,932 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 24 places, 17 transitions, 64 flow [2021-03-25 05:14:32,936 INFO L129 PetriNetUnfolder]: 4/33 cut-off events. [2021-03-25 05:14:32,937 INFO L130 PetriNetUnfolder]: For 9/10 co-relation queries the response was YES. [2021-03-25 05:14:32,937 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 33 events. 4/33 cut-off events. For 9/10 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 111 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 53. Up to 7 conditions per place. [2021-03-25 05:14:32,937 INFO L142 LiptonReduction]: Number of co-enabled transitions 78 [2021-03-25 05:14:32,939 INFO L154 LiptonReduction]: Checked pairs total: 65 [2021-03-25 05:14:32,939 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:14:32,940 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9 [2021-03-25 05:14:32,944 INFO L480 AbstractCegarLoop]: Abstraction has has 24 places, 17 transitions, 64 flow [2021-03-25 05:14:32,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:32,944 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:14:32,945 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:14:32,945 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 05:14:32,945 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:14:32,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:14:32,945 INFO L82 PathProgramCache]: Analyzing trace with hash 778166515, now seen corresponding path program 1 times [2021-03-25 05:14:32,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:14:32,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371191247] [2021-03-25 05:14:32,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:14:32,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:14:32,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:14:32,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:14:32,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:14:32,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:14:32,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:14:32,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:14:32,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:14:32,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371191247] [2021-03-25 05:14:32,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:14:32,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:14:32,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917699381] [2021-03-25 05:14:32,996 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:14:32,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:14:32,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:14:32,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:14:32,997 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 185 [2021-03-25 05:14:32,998 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 17 transitions, 64 flow. Second operand has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:32,998 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:14:32,998 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 185 [2021-03-25 05:14:32,998 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:14:33,023 INFO L129 PetriNetUnfolder]: 14/62 cut-off events. [2021-03-25 05:14:33,024 INFO L130 PetriNetUnfolder]: For 25/26 co-relation queries the response was YES. [2021-03-25 05:14:33,024 INFO L84 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 62 events. 14/62 cut-off events. For 25/26 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 256 event pairs, 0 based on Foata normal form. 5/56 useless extension candidates. Maximal degree in co-relation 125. Up to 33 conditions per place. [2021-03-25 05:14:33,024 INFO L132 encePairwiseOnDemand]: 180/185 looper letters, 3 selfloop transitions, 2 changer transitions 11/21 dead transitions. [2021-03-25 05:14:33,024 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 21 transitions, 94 flow [2021-03-25 05:14:33,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:14:33,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:14:33,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 768 transitions. [2021-03-25 05:14:33,030 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8302702702702702 [2021-03-25 05:14:33,030 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 768 transitions. [2021-03-25 05:14:33,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 768 transitions. [2021-03-25 05:14:33,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:14:33,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 768 transitions. [2021-03-25 05:14:33,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 153.6) internal successors, (768), 5 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:33,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:33,035 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:33,035 INFO L185 Difference]: Start difference. First operand has 24 places, 17 transitions, 64 flow. Second operand 5 states and 768 transitions. [2021-03-25 05:14:33,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 21 transitions, 94 flow [2021-03-25 05:14:33,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 21 transitions, 90 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 05:14:33,038 INFO L241 Difference]: Finished difference. Result has 28 places, 10 transitions, 46 flow [2021-03-25 05:14:33,038 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=46, PETRI_PLACES=28, PETRI_TRANSITIONS=10} [2021-03-25 05:14:33,038 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, -7 predicate places. [2021-03-25 05:14:33,038 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:14:33,038 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 28 places, 10 transitions, 46 flow [2021-03-25 05:14:33,039 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 28 places, 10 transitions, 46 flow [2021-03-25 05:14:33,039 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 21 places, 10 transitions, 46 flow [2021-03-25 05:14:33,044 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-03-25 05:14:33,044 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-03-25 05:14:33,044 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 16 events. 0/16 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 16 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-03-25 05:14:33,044 INFO L142 LiptonReduction]: Number of co-enabled transitions 8 [2021-03-25 05:14:33,142 INFO L154 LiptonReduction]: Checked pairs total: 14 [2021-03-25 05:14:33,143 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 05:14:33,143 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 105 [2021-03-25 05:14:33,144 INFO L480 AbstractCegarLoop]: Abstraction has has 19 places, 8 transitions, 42 flow [2021-03-25 05:14:33,145 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:33,145 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:14:33,145 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:14:33,146 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 05:14:33,149 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:14:33,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:14:33,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1647868309, now seen corresponding path program 1 times [2021-03-25 05:14:33,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:14:33,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385264942] [2021-03-25 05:14:33,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:14:33,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:14:33,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:14:33,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 05:14:33,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:14:33,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:14:33,215 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-25 05:14:33,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-25 05:14:33,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:14:33,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:14:33,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:14:33,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385264942] [2021-03-25 05:14:33,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:14:33,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:14:33,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566478525] [2021-03-25 05:14:33,222 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:14:33,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:14:33,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:14:33,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:14:33,225 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 187 [2021-03-25 05:14:33,226 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 8 transitions, 42 flow. Second operand has 5 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 05:14:33,226 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:14:33,226 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 187 [2021-03-25 05:14:33,226 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:14:33,254 INFO L129 PetriNetUnfolder]: 1/14 cut-off events. [2021-03-25 05:14:33,254 INFO L130 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2021-03-25 05:14:33,255 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 14 events. 1/14 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 19 event pairs, 1 based on Foata normal form. 2/16 useless extension candidates. Maximal degree in co-relation 45. Up to 6 conditions per place. [2021-03-25 05:14:33,256 INFO L132 encePairwiseOnDemand]: 182/187 looper letters, 4 selfloop transitions, 2 changer transitions 4/11 dead transitions. [2021-03-25 05:14:33,256 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 11 transitions, 72 flow [2021-03-25 05:14:33,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:14:33,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:14:33,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 711 transitions. [2021-03-25 05:14:33,258 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.760427807486631 [2021-03-25 05:14:33,258 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 711 transitions. [2021-03-25 05:14:33,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 711 transitions. [2021-03-25 05:14:33,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:14:33,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 711 transitions. [2021-03-25 05:14:33,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 142.2) internal successors, (711), 5 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:33,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:33,263 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:33,263 INFO L185 Difference]: Start difference. First operand has 19 places, 8 transitions, 42 flow. Second operand 5 states and 711 transitions. [2021-03-25 05:14:33,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 11 transitions, 72 flow [2021-03-25 05:14:33,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 11 transitions, 60 flow, removed 3 selfloop flow, removed 6 redundant places. [2021-03-25 05:14:33,264 INFO L241 Difference]: Finished difference. Result has 19 places, 7 transitions, 36 flow [2021-03-25 05:14:33,264 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=36, PETRI_PLACES=19, PETRI_TRANSITIONS=7} [2021-03-25 05:14:33,265 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, -16 predicate places. [2021-03-25 05:14:33,265 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:14:33,265 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 19 places, 7 transitions, 36 flow [2021-03-25 05:14:33,265 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 19 places, 7 transitions, 36 flow [2021-03-25 05:14:33,265 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 7 transitions, 36 flow [2021-03-25 05:14:33,267 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-03-25 05:14:33,267 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 05:14:33,267 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25 conditions, 7 events. 0/7 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 1 event pairs, 0 based on Foata normal form. 0/7 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-25 05:14:33,267 INFO L142 LiptonReduction]: Number of co-enabled transitions 2 [2021-03-25 05:14:33,453 INFO L154 LiptonReduction]: Checked pairs total: 2 [2021-03-25 05:14:33,453 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 05:14:33,453 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 188 [2021-03-25 05:14:33,454 INFO L480 AbstractCegarLoop]: Abstraction has has 15 places, 5 transitions, 32 flow [2021-03-25 05:14:33,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 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 05:14:33,454 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:14:33,454 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:14:33,454 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 05:14:33,455 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:14:33,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:14:33,455 INFO L82 PathProgramCache]: Analyzing trace with hash 960596391, now seen corresponding path program 1 times [2021-03-25 05:14:33,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:14:33,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039304673] [2021-03-25 05:14:33,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:14:33,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:14:33,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:14:33,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:14:33,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:14:33,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:14:33,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:14:33,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:14:33,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:14:33,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039304673] [2021-03-25 05:14:33,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:14:33,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:14:33,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342470552] [2021-03-25 05:14:33,474 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 05:14:33,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:14:33,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 05:14:33,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 05:14:33,476 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 189 [2021-03-25 05:14:33,476 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 5 transitions, 32 flow. Second operand has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:33,476 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:14:33,476 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 189 [2021-03-25 05:14:33,476 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:14:33,481 INFO L129 PetriNetUnfolder]: 0/4 cut-off events. [2021-03-25 05:14:33,482 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2021-03-25 05:14:33,482 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22 conditions, 4 events. 0/4 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/5 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 05:14:33,482 INFO L132 encePairwiseOnDemand]: 187/189 looper letters, 0 selfloop transitions, 0 changer transitions 4/4 dead transitions. [2021-03-25 05:14:33,482 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 4 transitions, 28 flow [2021-03-25 05:14:33,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:14:33,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:14:33,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 468 transitions. [2021-03-25 05:14:33,483 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2021-03-25 05:14:33,484 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 468 transitions. [2021-03-25 05:14:33,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 468 transitions. [2021-03-25 05:14:33,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:14:33,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 468 transitions. [2021-03-25 05:14:33,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:33,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 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 05:14:33,486 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 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 05:14:33,486 INFO L185 Difference]: Start difference. First operand has 15 places, 5 transitions, 32 flow. Second operand 3 states and 468 transitions. [2021-03-25 05:14:33,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 4 transitions, 28 flow [2021-03-25 05:14:33,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 9 places, 4 transitions, 14 flow, removed 1 selfloop flow, removed 7 redundant places. [2021-03-25 05:14:33,487 INFO L241 Difference]: Finished difference. Result has 9 places, 0 transitions, 0 flow [2021-03-25 05:14:33,487 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=10, PETRI_DIFFERENCE_MINUEND_PLACES=7, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=9, PETRI_TRANSITIONS=0} [2021-03-25 05:14:33,487 INFO L343 CegarLoopForPetriNet]: 35 programPoint places, -26 predicate places. [2021-03-25 05:14:33,487 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:14:33,487 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 9 places, 0 transitions, 0 flow [2021-03-25 05:14:33,488 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 9 places, 0 transitions, 0 flow [2021-03-25 05:14:33,488 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 05:14:33,488 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 05:14:33,488 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:14:33,488 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-25 05:14:33,488 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 05:14:33,488 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 05:14:33,488 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:14:33,488 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 05:14:33,489 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 05:14:33,489 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:14:33,489 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 05:14:33,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 05:14:33 BasicIcfg [2021-03-25 05:14:33,493 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 05:14:33,493 INFO L168 Benchmark]: Toolchain (without parser) took 5154.01 ms. Allocated memory was 255.9 MB in the beginning and 448.8 MB in the end (delta: 192.9 MB). Free memory was 234.6 MB in the beginning and 254.8 MB in the end (delta: -20.2 MB). Peak memory consumption was 172.3 MB. Max. memory is 16.0 GB. [2021-03-25 05:14:33,494 INFO L168 Benchmark]: CDTParser took 0.51 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 05:14:33,494 INFO L168 Benchmark]: CACSL2BoogieTranslator took 480.55 ms. Allocated memory was 255.9 MB in the beginning and 373.3 MB in the end (delta: 117.4 MB). Free memory was 234.1 MB in the beginning and 335.5 MB in the end (delta: -101.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-25 05:14:33,494 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.29 ms. Allocated memory is still 373.3 MB. Free memory was 335.5 MB in the beginning and 333.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:14:33,495 INFO L168 Benchmark]: Boogie Preprocessor took 19.94 ms. Allocated memory is still 373.3 MB. Free memory was 333.5 MB in the beginning and 331.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:14:33,495 INFO L168 Benchmark]: RCFGBuilder took 447.23 ms. Allocated memory is still 373.3 MB. Free memory was 331.7 MB in the beginning and 306.5 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-03-25 05:14:33,495 INFO L168 Benchmark]: TraceAbstraction took 4165.53 ms. Allocated memory was 373.3 MB in the beginning and 448.8 MB in the end (delta: 75.5 MB). Free memory was 306.0 MB in the beginning and 254.8 MB in the end (delta: 51.2 MB). Peak memory consumption was 129.8 MB. Max. memory is 16.0 GB. [2021-03-25 05:14:33,497 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 480.55 ms. Allocated memory was 255.9 MB in the beginning and 373.3 MB in the end (delta: 117.4 MB). Free memory was 234.1 MB in the beginning and 335.5 MB in the end (delta: -101.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 36.29 ms. Allocated memory is still 373.3 MB. Free memory was 335.5 MB in the beginning and 333.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 19.94 ms. Allocated memory is still 373.3 MB. Free memory was 333.5 MB in the beginning and 331.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 447.23 ms. Allocated memory is still 373.3 MB. Free memory was 331.7 MB in the beginning and 306.5 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4165.53 ms. Allocated memory was 373.3 MB in the beginning and 448.8 MB in the end (delta: 75.5 MB). Free memory was 306.0 MB in the beginning and 254.8 MB in the end (delta: 51.2 MB). Peak memory consumption was 129.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1689.3ms, 88 PlacesBefore, 35 PlacesAfterwards, 90 TransitionsBefore, 37 TransitionsAfterwards, 2208 CoEnabledTransitionPairs, 5 FixpointIterations, 16 TrivialSequentialCompositions, 47 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 0 ChoiceCompositions, 74 TotalNumberOfCompositions, 1756 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1506, positive: 1488, positive conditional: 0, positive unconditional: 1488, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1087, positive: 1076, positive conditional: 0, positive unconditional: 1076, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1087, positive: 1076, positive conditional: 0, positive unconditional: 1076, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1506, positive: 412, positive conditional: 0, positive unconditional: 412, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 1087, unknown conditional: 0, unknown unconditional: 1087] , Statistics on independence cache: Total cache size (in pairs): 78, Positive cache size: 77, Positive conditional cache size: 0, Positive unconditional cache size: 77, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 664.6ms, 36 PlacesBefore, 22 PlacesAfterwards, 34 TransitionsBefore, 19 TransitionsAfterwards, 368 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 13 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 1 ChoiceCompositions, 17 TotalNumberOfCompositions, 405 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 248, positive: 227, positive conditional: 0, positive unconditional: 227, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 106, positive: 93, positive conditional: 0, positive unconditional: 93, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 106, positive: 93, positive conditional: 0, positive unconditional: 93, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 248, positive: 134, positive conditional: 0, positive unconditional: 134, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 106, unknown conditional: 0, unknown unconditional: 106] , Statistics on independence cache: Total cache size (in pairs): 20, Positive cache size: 15, Positive conditional cache size: 0, Positive unconditional cache size: 15, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 567.8ms, 23 PlacesBefore, 21 PlacesAfterwards, 19 TransitionsBefore, 17 TransitionsAfterwards, 108 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 173 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 78, positive: 56, positive conditional: 0, positive unconditional: 56, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 15, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 15, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 78, positive: 43, positive conditional: 0, positive unconditional: 43, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 15, unknown conditional: 0, unknown unconditional: 15] , Statistics on independence cache: Total cache size (in pairs): 27, Positive cache size: 21, Positive conditional cache size: 0, Positive unconditional cache size: 21, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.8ms, 24 PlacesBefore, 24 PlacesAfterwards, 17 TransitionsBefore, 17 TransitionsAfterwards, 78 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 65 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: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 23, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 29, Positive cache size: 23, Positive conditional cache size: 0, Positive unconditional cache size: 23, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 104.2ms, 28 PlacesBefore, 19 PlacesAfterwards, 10 TransitionsBefore, 8 TransitionsAfterwards, 8 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 14 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 10, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 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: 10, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 15, Positive cache size: 11, Positive conditional cache size: 0, Positive unconditional cache size: 11, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 188.0ms, 19 PlacesBefore, 15 PlacesAfterwards, 7 TransitionsBefore, 5 TransitionsAfterwards, 2 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 2 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 8, Positive cache size: 6, Positive conditional cache size: 0, Positive unconditional cache size: 6, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.7ms, 9 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 8, Positive cache size: 6, Positive conditional cache size: 0, Positive unconditional cache size: 6, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - PositiveResult [Line: 690]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 86 locations, 1 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: SAFE, OverallTime: 4081.5ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 247.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1770.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 26 SDtfs, 4 SDslu, 9 SDs, 0 SdLazy, 46 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 48.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=86occurred in iteration=1, InterpolantAutomatonStates: 22, 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: 13.4ms SsaConstructionTime, 69.0ms SatisfiabilityAnalysisTime, 260.9ms InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 86 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...