/usr/bin/java -Xmx8000000000 -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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 07:28:02,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 07:28:02,865 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 07:28:02,895 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-13 07:28:02,896 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-13 07:28:02,899 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-13 07:28:02,901 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-13 07:28:02,907 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-13 07:28:02,908 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-13 07:28:02,911 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-13 07:28:02,912 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-13 07:28:02,913 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-13 07:28:02,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-13 07:28:02,915 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-13 07:28:02,916 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-13 07:28:02,916 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-13 07:28:02,918 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-13 07:28:02,919 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-13 07:28:02,921 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-13 07:28:02,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-13 07:28:02,941 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-13 07:28:02,942 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-13 07:28:02,943 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-13 07:28:02,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-13 07:28:02,947 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-13 07:28:02,949 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-13 07:28:02,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-13 07:28:02,950 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-13 07:28:02,950 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-13 07:28:02,951 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-13 07:28:02,951 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-13 07:28:02,951 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-13 07:28:02,951 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-13 07:28:02,952 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-13 07:28:02,952 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-13 07:28:02,953 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-13 07:28:02,958 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-NoLbe.epf [2021-06-13 07:28:02,977 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 07:28:02,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 07:28:02,978 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 07:28:02,978 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 07:28:02,978 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 07:28:02,978 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 07:28:02,979 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 07:28:02,979 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 07:28:02,979 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 07:28:02,979 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 07:28:02,979 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 07:28:02,979 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 07:28:02,979 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 07:28:02,979 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 07:28:02,979 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 07:28:02,979 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 07:28:02,979 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 07:28:02,980 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 07:28:02,980 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 07:28:02,980 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 07:28:02,980 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 07:28:02,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 07:28:02,980 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 07:28:02,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 07:28:02,980 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 07:28:02,980 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 07:28:02,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 07:28:02,981 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 07:28:02,981 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-13 07:28:02,981 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 07:28:03,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 07:28:03,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 07:28:03,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 07:28:03,219 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-13 07:28:03,224 INFO L275 PluginConnector]: CDTParser initialized [2021-06-13 07:28:03,225 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i [2021-06-13 07:28:03,291 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31eb21f77/f1510272da6a4c1ea86537cbbc4e355e/FLAGb42e269d9 [2021-06-13 07:28:03,660 INFO L306 CDTParser]: Found 1 translation units. [2021-06-13 07:28:03,660 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i [2021-06-13 07:28:03,674 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31eb21f77/f1510272da6a4c1ea86537cbbc4e355e/FLAGb42e269d9 [2021-06-13 07:28:04,032 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31eb21f77/f1510272da6a4c1ea86537cbbc4e355e [2021-06-13 07:28:04,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 07:28:04,035 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-13 07:28:04,037 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-13 07:28:04,037 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-13 07:28:04,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-13 07:28:04,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 07:28:04" (1/1) ... [2021-06-13 07:28:04,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40c230b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:28:04, skipping insertion in model container [2021-06-13 07:28:04,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 07:28:04" (1/1) ... [2021-06-13 07:28:04,046 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-13 07:28:04,070 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-13 07:28:04,178 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i[950,963] [2021-06-13 07:28:04,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 07:28:04,326 INFO L203 MainTranslator]: Completed pre-run [2021-06-13 07:28:04,333 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i[950,963] [2021-06-13 07:28:04,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 07:28:04,405 INFO L208 MainTranslator]: Completed translation [2021-06-13 07:28:04,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:28:04 WrapperNode [2021-06-13 07:28:04,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-13 07:28:04,406 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 07:28:04,406 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 07:28:04,407 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 07:28:04,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:28:04" (1/1) ... [2021-06-13 07:28:04,419 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:28:04" (1/1) ... [2021-06-13 07:28:04,430 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 07:28:04,431 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 07:28:04,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 07:28:04,431 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 07:28:04,436 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:28:04" (1/1) ... [2021-06-13 07:28:04,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:28:04" (1/1) ... [2021-06-13 07:28:04,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:28:04" (1/1) ... [2021-06-13 07:28:04,438 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:28:04" (1/1) ... [2021-06-13 07:28:04,440 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:28:04" (1/1) ... [2021-06-13 07:28:04,441 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:28:04" (1/1) ... [2021-06-13 07:28:04,442 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:28:04" (1/1) ... [2021-06-13 07:28:04,444 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 07:28:04,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 07:28:04,444 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 07:28:04,444 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 07:28:04,445 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:28:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 07:28:04,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-13 07:28:04,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-13 07:28:04,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-13 07:28:04,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-13 07:28:04,516 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-13 07:28:04,516 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-13 07:28:04,516 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-13 07:28:04,517 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-13 07:28:04,517 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-13 07:28:04,517 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-13 07:28:04,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-13 07:28:04,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-13 07:28:04,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 07:28:04,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 07:28:04,519 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-13 07:28:04,881 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 07:28:04,882 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-13 07:28:04,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 07:28:04 BoogieIcfgContainer [2021-06-13 07:28:04,883 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 07:28:04,884 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 07:28:04,884 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 07:28:04,886 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 07:28:04,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.06 07:28:04" (1/3) ... [2021-06-13 07:28:04,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b24707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 07:28:04, skipping insertion in model container [2021-06-13 07:28:04,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:28:04" (2/3) ... [2021-06-13 07:28:04,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b24707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 07:28:04, skipping insertion in model container [2021-06-13 07:28:04,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 07:28:04" (3/3) ... [2021-06-13 07:28:04,888 INFO L111 eAbstractionObserver]: Analyzing ICFG safe002_tso.oepc.i [2021-06-13 07:28:04,891 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 07:28:04,892 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-13 07:28:04,892 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 07:28:04,912 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,912 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,912 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,912 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,912 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,913 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,913 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,913 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,913 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,913 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,913 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,913 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,914 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,914 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,914 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,914 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,914 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,914 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,914 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,914 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,915 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,915 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,915 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,915 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,915 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,915 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,915 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,916 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,916 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,916 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,916 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,916 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,916 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,916 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,917 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,917 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,918 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,918 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,918 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,918 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,922 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,922 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,922 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,922 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,924 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,924 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,924 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,924 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:04,925 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-13 07:28:04,940 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-13 07:28:04,953 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 07:28:04,953 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 07:28:04,954 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 07:28:04,954 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 07:28:04,954 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 07:28:04,954 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 07:28:04,954 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 07:28:04,954 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 07:28:04,961 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2021-06-13 07:28:05,002 INFO L129 PetriNetUnfolder]: 2/81 cut-off events. [2021-06-13 07:28:05,003 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:28:05,012 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-06-13 07:28:05,013 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 84 transitions, 183 flow [2021-06-13 07:28:05,017 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 147 flow [2021-06-13 07:28:05,038 INFO L129 PetriNetUnfolder]: 1/68 cut-off events. [2021-06-13 07:28:05,038 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:28:05,038 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:28:05,039 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:28:05,039 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:28:05,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:28:05,044 INFO L82 PathProgramCache]: Analyzing trace with hash 663437649, now seen corresponding path program 1 times [2021-06-13 07:28:05,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:28:05,049 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965604573] [2021-06-13 07:28:05,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:28:05,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:28:05,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:05,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:05,302 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-13 07:28:05,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 07:28:05,325 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:28:05,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:28:05,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:05,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:28:05,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:05,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:28:05,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:05,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:05,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:28:05,397 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:28:05,397 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965604573] [2021-06-13 07:28:05,397 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965604573] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:28:05,397 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:28:05,398 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 07:28:05,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939558052] [2021-06-13 07:28:05,404 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-13 07:28:05,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:28:05,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-13 07:28:05,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-13 07:28:05,416 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 84 [2021-06-13 07:28:05,418 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 147 flow. Second operand has 6 states, 6 states have (on average 66.66666666666667) internal successors, (400), 6 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:05,418 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:28:05,418 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 84 [2021-06-13 07:28:05,419 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:28:05,791 INFO L129 PetriNetUnfolder]: 361/933 cut-off events. [2021-06-13 07:28:05,795 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:28:05,799 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1559 conditions, 933 events. 361/933 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 6081 event pairs, 65 based on Foata normal form. 35/941 useless extension candidates. Maximal degree in co-relation 1525. Up to 204 conditions per place. [2021-06-13 07:28:05,803 INFO L132 encePairwiseOnDemand]: 71/84 looper letters, 16 selfloop transitions, 8 changer transitions 37/114 dead transitions. [2021-06-13 07:28:05,803 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 114 transitions, 359 flow [2021-06-13 07:28:05,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 07:28:05,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 07:28:05,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 650 transitions. [2021-06-13 07:28:05,816 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8597883597883598 [2021-06-13 07:28:05,816 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 650 transitions. [2021-06-13 07:28:05,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 650 transitions. [2021-06-13 07:28:05,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:28:05,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 650 transitions. [2021-06-13 07:28:05,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 72.22222222222223) internal successors, (650), 9 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:05,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:05,828 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:05,829 INFO L185 Difference]: Start difference. First operand has 78 places, 69 transitions, 147 flow. Second operand 9 states and 650 transitions. [2021-06-13 07:28:05,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 114 transitions, 359 flow [2021-06-13 07:28:05,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 114 transitions, 356 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-13 07:28:05,833 INFO L241 Difference]: Finished difference. Result has 91 places, 73 transitions, 238 flow [2021-06-13 07:28:05,834 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=238, PETRI_PLACES=91, PETRI_TRANSITIONS=73} [2021-06-13 07:28:05,835 INFO L335 CegarLoopForPetriNet]: 78 programPoint places, 13 predicate places. [2021-06-13 07:28:05,835 INFO L482 AbstractCegarLoop]: Abstraction has has 91 places, 73 transitions, 238 flow [2021-06-13 07:28:05,835 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 66.66666666666667) internal successors, (400), 6 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:05,835 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:28:05,835 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:28:05,836 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-13 07:28:05,836 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:28:05,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:28:05,836 INFO L82 PathProgramCache]: Analyzing trace with hash 601775058, now seen corresponding path program 1 times [2021-06-13 07:28:05,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:28:05,836 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759896265] [2021-06-13 07:28:05,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:28:05,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:28:05,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:05,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:05,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:05,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:28:05,890 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:28:05,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:28:05,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:05,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:28:05,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:05,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:28:05,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:05,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:05,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:28:05,942 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:28:05,943 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759896265] [2021-06-13 07:28:05,943 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759896265] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:28:05,943 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:28:05,943 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 07:28:05,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577917109] [2021-06-13 07:28:05,944 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-13 07:28:05,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:28:05,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-13 07:28:05,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-13 07:28:05,946 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 84 [2021-06-13 07:28:05,946 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 73 transitions, 238 flow. Second operand has 6 states, 6 states have (on average 70.33333333333333) internal successors, (422), 6 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:05,946 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:28:05,947 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 84 [2021-06-13 07:28:05,947 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:28:06,184 INFO L129 PetriNetUnfolder]: 180/609 cut-off events. [2021-06-13 07:28:06,185 INFO L130 PetriNetUnfolder]: For 1013/1248 co-relation queries the response was YES. [2021-06-13 07:28:06,186 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1753 conditions, 609 events. 180/609 cut-off events. For 1013/1248 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3880 event pairs, 44 based on Foata normal form. 18/612 useless extension candidates. Maximal degree in co-relation 1711. Up to 163 conditions per place. [2021-06-13 07:28:06,188 INFO L132 encePairwiseOnDemand]: 77/84 looper letters, 16 selfloop transitions, 5 changer transitions 37/116 dead transitions. [2021-06-13 07:28:06,188 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 116 transitions, 658 flow [2021-06-13 07:28:06,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 07:28:06,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 07:28:06,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 663 transitions. [2021-06-13 07:28:06,190 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.876984126984127 [2021-06-13 07:28:06,190 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 663 transitions. [2021-06-13 07:28:06,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 663 transitions. [2021-06-13 07:28:06,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:28:06,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 663 transitions. [2021-06-13 07:28:06,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 73.66666666666667) internal successors, (663), 9 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:06,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:06,193 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:06,193 INFO L185 Difference]: Start difference. First operand has 91 places, 73 transitions, 238 flow. Second operand 9 states and 663 transitions. [2021-06-13 07:28:06,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 116 transitions, 658 flow [2021-06-13 07:28:06,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 116 transitions, 598 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-13 07:28:06,203 INFO L241 Difference]: Finished difference. Result has 98 places, 76 transitions, 293 flow [2021-06-13 07:28:06,203 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=293, PETRI_PLACES=98, PETRI_TRANSITIONS=76} [2021-06-13 07:28:06,204 INFO L335 CegarLoopForPetriNet]: 78 programPoint places, 20 predicate places. [2021-06-13 07:28:06,204 INFO L482 AbstractCegarLoop]: Abstraction has has 98 places, 76 transitions, 293 flow [2021-06-13 07:28:06,204 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 70.33333333333333) internal successors, (422), 6 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:06,204 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:28:06,204 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:28:06,204 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-13 07:28:06,204 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:28:06,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:28:06,205 INFO L82 PathProgramCache]: Analyzing trace with hash 2067982682, now seen corresponding path program 1 times [2021-06-13 07:28:06,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:28:06,205 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753027929] [2021-06-13 07:28:06,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:28:06,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:28:06,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:06,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:06,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:06,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:28:06,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:06,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:28:06,283 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-13 07:28:06,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 07:28:06,308 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:28:06,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:28:06,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:06,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:28:06,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:06,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:28:06,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:06,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:06,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:28:06,358 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:28:06,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753027929] [2021-06-13 07:28:06,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753027929] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:28:06,358 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:28:06,359 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 07:28:06,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875129029] [2021-06-13 07:28:06,359 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 07:28:06,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:28:06,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 07:28:06,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-13 07:28:06,361 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 84 [2021-06-13 07:28:06,361 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 76 transitions, 293 flow. Second operand has 8 states, 8 states have (on average 66.5) internal successors, (532), 8 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:06,361 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:28:06,361 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 84 [2021-06-13 07:28:06,362 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:28:06,595 INFO L129 PetriNetUnfolder]: 119/417 cut-off events. [2021-06-13 07:28:06,595 INFO L130 PetriNetUnfolder]: For 1838/2382 co-relation queries the response was YES. [2021-06-13 07:28:06,597 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1610 conditions, 417 events. 119/417 cut-off events. For 1838/2382 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2127 event pairs, 0 based on Foata normal form. 20/424 useless extension candidates. Maximal degree in co-relation 1560. Up to 139 conditions per place. [2021-06-13 07:28:06,598 INFO L132 encePairwiseOnDemand]: 71/84 looper letters, 14 selfloop transitions, 11 changer transitions 52/130 dead transitions. [2021-06-13 07:28:06,598 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 130 transitions, 927 flow [2021-06-13 07:28:06,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-13 07:28:06,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-06-13 07:28:06,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 976 transitions. [2021-06-13 07:28:06,601 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8299319727891157 [2021-06-13 07:28:06,601 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 976 transitions. [2021-06-13 07:28:06,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 976 transitions. [2021-06-13 07:28:06,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:28:06,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 976 transitions. [2021-06-13 07:28:06,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 69.71428571428571) internal successors, (976), 14 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:06,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 84.0) internal successors, (1260), 15 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:06,606 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 84.0) internal successors, (1260), 15 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:06,606 INFO L185 Difference]: Start difference. First operand has 98 places, 76 transitions, 293 flow. Second operand 14 states and 976 transitions. [2021-06-13 07:28:06,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 130 transitions, 927 flow [2021-06-13 07:28:06,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 130 transitions, 862 flow, removed 30 selfloop flow, removed 5 redundant places. [2021-06-13 07:28:06,615 INFO L241 Difference]: Finished difference. Result has 111 places, 75 transitions, 313 flow [2021-06-13 07:28:06,615 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=313, PETRI_PLACES=111, PETRI_TRANSITIONS=75} [2021-06-13 07:28:06,615 INFO L335 CegarLoopForPetriNet]: 78 programPoint places, 33 predicate places. [2021-06-13 07:28:06,615 INFO L482 AbstractCegarLoop]: Abstraction has has 111 places, 75 transitions, 313 flow [2021-06-13 07:28:06,615 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 66.5) internal successors, (532), 8 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:06,616 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:28:06,616 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:28:06,616 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-13 07:28:06,616 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:28:06,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:28:06,617 INFO L82 PathProgramCache]: Analyzing trace with hash -95792479, now seen corresponding path program 1 times [2021-06-13 07:28:06,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:28:06,617 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082037458] [2021-06-13 07:28:06,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:28:06,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:28:06,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:06,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:06,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:06,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:28:06,704 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-13 07:28:06,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 07:28:06,715 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:28:06,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:28:06,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:06,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:28:06,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:06,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:28:06,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:06,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:06,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:28:06,745 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:28:06,745 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082037458] [2021-06-13 07:28:06,745 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082037458] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:28:06,745 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:28:06,745 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:28:06,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164565144] [2021-06-13 07:28:06,745 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:28:06,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:28:06,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:28:06,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:28:06,749 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 84 [2021-06-13 07:28:06,750 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 75 transitions, 313 flow. Second operand has 7 states, 7 states have (on average 66.85714285714286) internal successors, (468), 7 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:06,750 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:28:06,750 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 84 [2021-06-13 07:28:06,750 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:28:06,840 INFO L129 PetriNetUnfolder]: 34/172 cut-off events. [2021-06-13 07:28:06,841 INFO L130 PetriNetUnfolder]: For 829/1032 co-relation queries the response was YES. [2021-06-13 07:28:06,841 INFO L84 FinitePrefix]: Finished finitePrefix Result has 656 conditions, 172 events. 34/172 cut-off events. For 829/1032 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 510 event pairs, 6 based on Foata normal form. 9/177 useless extension candidates. Maximal degree in co-relation 593. Up to 55 conditions per place. [2021-06-13 07:28:06,842 INFO L132 encePairwiseOnDemand]: 74/84 looper letters, 15 selfloop transitions, 9 changer transitions 13/90 dead transitions. [2021-06-13 07:28:06,842 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 90 transitions, 532 flow [2021-06-13 07:28:06,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 07:28:06,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 07:28:06,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 686 transitions. [2021-06-13 07:28:06,845 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8166666666666667 [2021-06-13 07:28:06,845 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 686 transitions. [2021-06-13 07:28:06,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 686 transitions. [2021-06-13 07:28:06,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:28:06,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 686 transitions. [2021-06-13 07:28:06,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 68.6) internal successors, (686), 10 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:06,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 84.0) internal successors, (924), 11 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:06,848 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 84.0) internal successors, (924), 11 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:06,848 INFO L185 Difference]: Start difference. First operand has 111 places, 75 transitions, 313 flow. Second operand 10 states and 686 transitions. [2021-06-13 07:28:06,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 90 transitions, 532 flow [2021-06-13 07:28:06,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 90 transitions, 435 flow, removed 42 selfloop flow, removed 15 redundant places. [2021-06-13 07:28:06,851 INFO L241 Difference]: Finished difference. Result has 104 places, 76 transitions, 306 flow [2021-06-13 07:28:06,851 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=306, PETRI_PLACES=104, PETRI_TRANSITIONS=76} [2021-06-13 07:28:06,851 INFO L335 CegarLoopForPetriNet]: 78 programPoint places, 26 predicate places. [2021-06-13 07:28:06,851 INFO L482 AbstractCegarLoop]: Abstraction has has 104 places, 76 transitions, 306 flow [2021-06-13 07:28:06,851 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 66.85714285714286) internal successors, (468), 7 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:06,851 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:28:06,852 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:28:06,852 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-13 07:28:06,852 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:28:06,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:28:06,852 INFO L82 PathProgramCache]: Analyzing trace with hash 399659830, now seen corresponding path program 1 times [2021-06-13 07:28:06,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:28:06,852 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064265040] [2021-06-13 07:28:06,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:28:06,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:28:06,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:06,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:06,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:06,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:28:06,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:06,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:28:06,900 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:28:06,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:28:06,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:06,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:28:06,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:06,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:28:06,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:06,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:06,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:28:06,928 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:28:06,928 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064265040] [2021-06-13 07:28:06,928 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064265040] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:28:06,928 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:28:06,928 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:28:06,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70761690] [2021-06-13 07:28:06,929 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:28:06,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:28:06,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:28:06,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:28:06,930 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 84 [2021-06-13 07:28:06,931 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 76 transitions, 306 flow. Second operand has 7 states, 7 states have (on average 69.57142857142857) internal successors, (487), 7 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:06,932 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:28:06,932 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 84 [2021-06-13 07:28:06,932 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:28:07,107 INFO L129 PetriNetUnfolder]: 29/191 cut-off events. [2021-06-13 07:28:07,108 INFO L130 PetriNetUnfolder]: For 693/883 co-relation queries the response was YES. [2021-06-13 07:28:07,108 INFO L84 FinitePrefix]: Finished finitePrefix Result has 637 conditions, 191 events. 29/191 cut-off events. For 693/883 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 712 event pairs, 12 based on Foata normal form. 11/197 useless extension candidates. Maximal degree in co-relation 600. Up to 51 conditions per place. [2021-06-13 07:28:07,109 INFO L132 encePairwiseOnDemand]: 77/84 looper letters, 12 selfloop transitions, 5 changer transitions 26/101 dead transitions. [2021-06-13 07:28:07,109 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 101 transitions, 651 flow [2021-06-13 07:28:07,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-13 07:28:07,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-06-13 07:28:07,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1196 transitions. [2021-06-13 07:28:07,111 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8375350140056023 [2021-06-13 07:28:07,111 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1196 transitions. [2021-06-13 07:28:07,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1196 transitions. [2021-06-13 07:28:07,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:28:07,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1196 transitions. [2021-06-13 07:28:07,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 70.3529411764706) internal successors, (1196), 17 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:07,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 84.0) internal successors, (1512), 18 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:07,117 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 84.0) internal successors, (1512), 18 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:07,117 INFO L185 Difference]: Start difference. First operand has 104 places, 76 transitions, 306 flow. Second operand 17 states and 1196 transitions. [2021-06-13 07:28:07,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 101 transitions, 651 flow [2021-06-13 07:28:07,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 101 transitions, 546 flow, removed 50 selfloop flow, removed 9 redundant places. [2021-06-13 07:28:07,121 INFO L241 Difference]: Finished difference. Result has 120 places, 75 transitions, 317 flow [2021-06-13 07:28:07,121 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=317, PETRI_PLACES=120, PETRI_TRANSITIONS=75} [2021-06-13 07:28:07,121 INFO L335 CegarLoopForPetriNet]: 78 programPoint places, 42 predicate places. [2021-06-13 07:28:07,121 INFO L482 AbstractCegarLoop]: Abstraction has has 120 places, 75 transitions, 317 flow [2021-06-13 07:28:07,121 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 69.57142857142857) internal successors, (487), 7 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:07,121 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:28:07,121 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:28:07,121 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-13 07:28:07,122 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:28:07,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:28:07,122 INFO L82 PathProgramCache]: Analyzing trace with hash -840120542, now seen corresponding path program 1 times [2021-06-13 07:28:07,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:28:07,122 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211586805] [2021-06-13 07:28:07,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:28:07,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:28:07,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:07,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:07,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:07,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:28:07,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:07,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:28:07,183 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:28:07,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:28:07,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:07,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:28:07,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:07,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:28:07,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:07,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:07,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:28:07,211 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:28:07,211 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211586805] [2021-06-13 07:28:07,211 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211586805] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:28:07,211 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:28:07,211 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:28:07,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616059471] [2021-06-13 07:28:07,212 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:28:07,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:28:07,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:28:07,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:28:07,213 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 84 [2021-06-13 07:28:07,213 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 75 transitions, 317 flow. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:07,213 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:28:07,213 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 84 [2021-06-13 07:28:07,213 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:28:07,273 INFO L129 PetriNetUnfolder]: 10/129 cut-off events. [2021-06-13 07:28:07,273 INFO L130 PetriNetUnfolder]: For 444/550 co-relation queries the response was YES. [2021-06-13 07:28:07,274 INFO L84 FinitePrefix]: Finished finitePrefix Result has 389 conditions, 129 events. 10/129 cut-off events. For 444/550 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 343 event pairs, 8 based on Foata normal form. 6/131 useless extension candidates. Maximal degree in co-relation 340. Up to 24 conditions per place. [2021-06-13 07:28:07,274 INFO L132 encePairwiseOnDemand]: 76/84 looper letters, 8 selfloop transitions, 4 changer transitions 12/79 dead transitions. [2021-06-13 07:28:07,274 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 79 transitions, 401 flow [2021-06-13 07:28:07,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-13 07:28:07,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-13 07:28:07,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 494 transitions. [2021-06-13 07:28:07,275 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8401360544217688 [2021-06-13 07:28:07,275 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 494 transitions. [2021-06-13 07:28:07,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 494 transitions. [2021-06-13 07:28:07,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:28:07,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 494 transitions. [2021-06-13 07:28:07,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 70.57142857142857) internal successors, (494), 7 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:07,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 84.0) internal successors, (672), 8 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:07,277 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 84.0) internal successors, (672), 8 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:07,277 INFO L185 Difference]: Start difference. First operand has 120 places, 75 transitions, 317 flow. Second operand 7 states and 494 transitions. [2021-06-13 07:28:07,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 79 transitions, 401 flow [2021-06-13 07:28:07,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 79 transitions, 335 flow, removed 28 selfloop flow, removed 16 redundant places. [2021-06-13 07:28:07,280 INFO L241 Difference]: Finished difference. Result has 100 places, 67 transitions, 224 flow [2021-06-13 07:28:07,280 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=224, PETRI_PLACES=100, PETRI_TRANSITIONS=67} [2021-06-13 07:28:07,280 INFO L335 CegarLoopForPetriNet]: 78 programPoint places, 22 predicate places. [2021-06-13 07:28:07,280 INFO L482 AbstractCegarLoop]: Abstraction has has 100 places, 67 transitions, 224 flow [2021-06-13 07:28:07,280 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:07,280 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:28:07,280 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:28:07,280 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-13 07:28:07,280 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:28:07,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:28:07,281 INFO L82 PathProgramCache]: Analyzing trace with hash -2041669196, now seen corresponding path program 2 times [2021-06-13 07:28:07,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:28:07,281 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215811641] [2021-06-13 07:28:07,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:28:07,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:28:07,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:07,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:07,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:07,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:28:07,308 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:28:07,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:28:07,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:07,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:28:07,325 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:28:07,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:28:07,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:07,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:07,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:28:07,331 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:28:07,331 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215811641] [2021-06-13 07:28:07,332 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215811641] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:28:07,332 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:28:07,332 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 07:28:07,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412946440] [2021-06-13 07:28:07,332 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-13 07:28:07,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:28:07,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-13 07:28:07,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-13 07:28:07,333 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-06-13 07:28:07,333 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 67 transitions, 224 flow. Second operand has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:07,333 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:28:07,333 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-06-13 07:28:07,333 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:28:07,421 INFO L129 PetriNetUnfolder]: 106/338 cut-off events. [2021-06-13 07:28:07,421 INFO L130 PetriNetUnfolder]: For 256/260 co-relation queries the response was YES. [2021-06-13 07:28:07,422 INFO L84 FinitePrefix]: Finished finitePrefix Result has 724 conditions, 338 events. 106/338 cut-off events. For 256/260 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1653 event pairs, 24 based on Foata normal form. 8/335 useless extension candidates. Maximal degree in co-relation 670. Up to 84 conditions per place. [2021-06-13 07:28:07,423 INFO L132 encePairwiseOnDemand]: 75/84 looper letters, 10 selfloop transitions, 6 changer transitions 19/92 dead transitions. [2021-06-13 07:28:07,423 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 92 transitions, 344 flow [2021-06-13 07:28:07,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 07:28:07,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 07:28:07,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 667 transitions. [2021-06-13 07:28:07,425 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8822751322751323 [2021-06-13 07:28:07,425 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 667 transitions. [2021-06-13 07:28:07,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 667 transitions. [2021-06-13 07:28:07,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:28:07,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 667 transitions. [2021-06-13 07:28:07,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.11111111111111) internal successors, (667), 9 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:07,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:07,428 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:07,428 INFO L185 Difference]: Start difference. First operand has 100 places, 67 transitions, 224 flow. Second operand 9 states and 667 transitions. [2021-06-13 07:28:07,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 92 transitions, 344 flow [2021-06-13 07:28:07,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 92 transitions, 294 flow, removed 10 selfloop flow, removed 14 redundant places. [2021-06-13 07:28:07,430 INFO L241 Difference]: Finished difference. Result has 95 places, 70 transitions, 230 flow [2021-06-13 07:28:07,430 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=230, PETRI_PLACES=95, PETRI_TRANSITIONS=70} [2021-06-13 07:28:07,430 INFO L335 CegarLoopForPetriNet]: 78 programPoint places, 17 predicate places. [2021-06-13 07:28:07,431 INFO L482 AbstractCegarLoop]: Abstraction has has 95 places, 70 transitions, 230 flow [2021-06-13 07:28:07,431 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:07,431 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:28:07,431 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:28:07,431 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-13 07:28:07,431 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:28:07,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:28:07,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1969205471, now seen corresponding path program 1 times [2021-06-13 07:28:07,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:28:07,432 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673554276] [2021-06-13 07:28:07,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:28:07,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:28:07,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:07,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:07,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:07,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:28:07,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:07,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:28:07,459 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:28:07,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:28:07,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:07,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:28:07,478 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:28:07,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:28:07,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:07,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:07,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:28:07,488 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:28:07,488 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673554276] [2021-06-13 07:28:07,488 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673554276] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:28:07,489 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:28:07,489 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:28:07,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650533913] [2021-06-13 07:28:07,489 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:28:07,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:28:07,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:28:07,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:28:07,490 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-06-13 07:28:07,490 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 70 transitions, 230 flow. Second operand has 7 states, 7 states have (on average 71.14285714285714) internal successors, (498), 7 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:07,490 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:28:07,490 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-06-13 07:28:07,490 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:28:07,615 INFO L129 PetriNetUnfolder]: 57/215 cut-off events. [2021-06-13 07:28:07,615 INFO L130 PetriNetUnfolder]: For 321/362 co-relation queries the response was YES. [2021-06-13 07:28:07,615 INFO L84 FinitePrefix]: Finished finitePrefix Result has 655 conditions, 215 events. 57/215 cut-off events. For 321/362 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 787 event pairs, 4 based on Foata normal form. 14/226 useless extension candidates. Maximal degree in co-relation 610. Up to 76 conditions per place. [2021-06-13 07:28:07,616 INFO L132 encePairwiseOnDemand]: 75/84 looper letters, 10 selfloop transitions, 9 changer transitions 19/95 dead transitions. [2021-06-13 07:28:07,616 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 95 transitions, 483 flow [2021-06-13 07:28:07,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 07:28:07,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 07:28:07,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 740 transitions. [2021-06-13 07:28:07,617 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8809523809523809 [2021-06-13 07:28:07,617 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 740 transitions. [2021-06-13 07:28:07,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 740 transitions. [2021-06-13 07:28:07,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:28:07,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 740 transitions. [2021-06-13 07:28:07,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 74.0) internal successors, (740), 10 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) [2021-06-13 07:28:07,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 84.0) internal successors, (924), 11 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:07,620 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 84.0) internal successors, (924), 11 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:07,620 INFO L185 Difference]: Start difference. First operand has 95 places, 70 transitions, 230 flow. Second operand 10 states and 740 transitions. [2021-06-13 07:28:07,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 95 transitions, 483 flow [2021-06-13 07:28:07,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 95 transitions, 459 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-06-13 07:28:07,622 INFO L241 Difference]: Finished difference. Result has 101 places, 73 transitions, 298 flow [2021-06-13 07:28:07,622 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=298, PETRI_PLACES=101, PETRI_TRANSITIONS=73} [2021-06-13 07:28:07,622 INFO L335 CegarLoopForPetriNet]: 78 programPoint places, 23 predicate places. [2021-06-13 07:28:07,623 INFO L482 AbstractCegarLoop]: Abstraction has has 101 places, 73 transitions, 298 flow [2021-06-13 07:28:07,623 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 71.14285714285714) internal successors, (498), 7 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:07,623 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:28:07,623 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:28:07,623 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-13 07:28:07,623 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:28:07,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:28:07,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1818775442, now seen corresponding path program 1 times [2021-06-13 07:28:07,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:28:07,626 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615629365] [2021-06-13 07:28:07,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:28:07,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:28:07,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:07,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:07,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:07,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:28:07,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:07,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:28:07,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:07,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:28:07,681 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:28:07,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:28:07,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:07,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:28:07,700 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:28:07,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:28:07,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:07,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:07,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:28:07,707 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:28:07,710 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615629365] [2021-06-13 07:28:07,710 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615629365] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:28:07,710 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:28:07,710 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 07:28:07,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125244856] [2021-06-13 07:28:07,710 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 07:28:07,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:28:07,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 07:28:07,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-13 07:28:07,711 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-06-13 07:28:07,712 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 73 transitions, 298 flow. Second operand has 8 states, 8 states have (on average 71.125) internal successors, (569), 8 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:07,712 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:28:07,712 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-06-13 07:28:07,712 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:28:07,815 INFO L129 PetriNetUnfolder]: 16/113 cut-off events. [2021-06-13 07:28:07,815 INFO L130 PetriNetUnfolder]: For 370/415 co-relation queries the response was YES. [2021-06-13 07:28:07,816 INFO L84 FinitePrefix]: Finished finitePrefix Result has 372 conditions, 113 events. 16/113 cut-off events. For 370/415 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 217 event pairs, 0 based on Foata normal form. 14/126 useless extension candidates. Maximal degree in co-relation 339. Up to 30 conditions per place. [2021-06-13 07:28:07,816 INFO L132 encePairwiseOnDemand]: 75/84 looper letters, 4 selfloop transitions, 12 changer transitions 13/86 dead transitions. [2021-06-13 07:28:07,816 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 86 transitions, 482 flow [2021-06-13 07:28:07,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-13 07:28:07,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-13 07:28:07,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 801 transitions. [2021-06-13 07:28:07,818 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8668831168831169 [2021-06-13 07:28:07,818 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 801 transitions. [2021-06-13 07:28:07,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 801 transitions. [2021-06-13 07:28:07,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:28:07,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 801 transitions. [2021-06-13 07:28:07,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 72.81818181818181) internal successors, (801), 11 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:07,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 84.0) internal successors, (1008), 12 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:07,821 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 84.0) internal successors, (1008), 12 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:07,821 INFO L185 Difference]: Start difference. First operand has 101 places, 73 transitions, 298 flow. Second operand 11 states and 801 transitions. [2021-06-13 07:28:07,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 86 transitions, 482 flow [2021-06-13 07:28:07,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 86 transitions, 367 flow, removed 47 selfloop flow, removed 13 redundant places. [2021-06-13 07:28:07,823 INFO L241 Difference]: Finished difference. Result has 100 places, 73 transitions, 268 flow [2021-06-13 07:28:07,823 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=268, PETRI_PLACES=100, PETRI_TRANSITIONS=73} [2021-06-13 07:28:07,823 INFO L335 CegarLoopForPetriNet]: 78 programPoint places, 22 predicate places. [2021-06-13 07:28:07,824 INFO L482 AbstractCegarLoop]: Abstraction has has 100 places, 73 transitions, 268 flow [2021-06-13 07:28:07,824 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 71.125) internal successors, (569), 8 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:07,824 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:28:07,824 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:28:07,824 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-13 07:28:07,824 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:28:07,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:28:07,824 INFO L82 PathProgramCache]: Analyzing trace with hash -311504715, now seen corresponding path program 1 times [2021-06-13 07:28:07,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:28:07,825 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668315168] [2021-06-13 07:28:07,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:28:07,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:28:07,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:07,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:07,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:07,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:28:07,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:07,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:28:07,870 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:28:07,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:28:07,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:07,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:28:07,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:07,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:28:07,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:07,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:07,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:28:07,899 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:28:07,899 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668315168] [2021-06-13 07:28:07,900 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668315168] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:28:07,900 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:28:07,900 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:28:07,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995501572] [2021-06-13 07:28:07,900 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:28:07,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:28:07,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:28:07,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:28:07,901 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-06-13 07:28:07,901 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 73 transitions, 268 flow. Second operand has 7 states, 7 states have (on average 71.42857142857143) internal successors, (500), 7 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:07,901 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:28:07,901 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-06-13 07:28:07,901 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:28:07,946 INFO L129 PetriNetUnfolder]: 5/82 cut-off events. [2021-06-13 07:28:07,946 INFO L130 PetriNetUnfolder]: For 75/81 co-relation queries the response was YES. [2021-06-13 07:28:07,947 INFO L84 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 82 events. 5/82 cut-off events. For 75/81 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 80 event pairs, 0 based on Foata normal form. 1/82 useless extension candidates. Maximal degree in co-relation 152. Up to 11 conditions per place. [2021-06-13 07:28:07,947 INFO L132 encePairwiseOnDemand]: 78/84 looper letters, 0 selfloop transitions, 0 changer transitions 71/71 dead transitions. [2021-06-13 07:28:07,947 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 71 transitions, 282 flow [2021-06-13 07:28:07,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-13 07:28:07,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-13 07:28:07,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 500 transitions. [2021-06-13 07:28:07,948 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8503401360544217 [2021-06-13 07:28:07,949 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 500 transitions. [2021-06-13 07:28:07,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 500 transitions. [2021-06-13 07:28:07,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:28:07,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 500 transitions. [2021-06-13 07:28:07,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 71.42857142857143) internal successors, (500), 7 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:07,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 84.0) internal successors, (672), 8 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:07,952 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 84.0) internal successors, (672), 8 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:07,952 INFO L185 Difference]: Start difference. First operand has 100 places, 73 transitions, 268 flow. Second operand 7 states and 500 transitions. [2021-06-13 07:28:07,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 71 transitions, 282 flow [2021-06-13 07:28:07,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 71 transitions, 200 flow, removed 22 selfloop flow, removed 15 redundant places. [2021-06-13 07:28:07,954 INFO L241 Difference]: Finished difference. Result has 85 places, 0 transitions, 0 flow [2021-06-13 07:28:07,954 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=85, PETRI_TRANSITIONS=0} [2021-06-13 07:28:07,954 INFO L335 CegarLoopForPetriNet]: 78 programPoint places, 7 predicate places. [2021-06-13 07:28:07,954 INFO L482 AbstractCegarLoop]: Abstraction has has 85 places, 0 transitions, 0 flow [2021-06-13 07:28:07,954 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 71.42857142857143) internal successors, (500), 7 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:07,955 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-13 07:28:07,956 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-13 07:28:07,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.06 07:28:07 BasicIcfg [2021-06-13 07:28:07,959 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-13 07:28:07,960 INFO L168 Benchmark]: Toolchain (without parser) took 3924.91 ms. Allocated memory was 199.2 MB in the beginning and 267.4 MB in the end (delta: 68.2 MB). Free memory was 162.3 MB in the beginning and 126.7 MB in the end (delta: 35.6 MB). Peak memory consumption was 104.6 MB. Max. memory is 8.0 GB. [2021-06-13 07:28:07,960 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 199.2 MB. Free memory is still 180.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 07:28:07,961 INFO L168 Benchmark]: CACSL2BoogieTranslator took 368.98 ms. Allocated memory is still 199.2 MB. Free memory was 162.0 MB in the beginning and 159.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-06-13 07:28:07,961 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.23 ms. Allocated memory is still 199.2 MB. Free memory was 159.7 MB in the beginning and 158.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-13 07:28:07,962 INFO L168 Benchmark]: Boogie Preprocessor took 12.94 ms. Allocated memory is still 199.2 MB. Free memory was 158.0 MB in the beginning and 156.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-13 07:28:07,962 INFO L168 Benchmark]: RCFGBuilder took 438.65 ms. Allocated memory is still 199.2 MB. Free memory was 156.6 MB in the beginning and 132.4 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2021-06-13 07:28:07,964 INFO L168 Benchmark]: TraceAbstraction took 3075.00 ms. Allocated memory was 199.2 MB in the beginning and 267.4 MB in the end (delta: 68.2 MB). Free memory was 131.9 MB in the beginning and 126.7 MB in the end (delta: 5.2 MB). Peak memory consumption was 74.4 MB. Max. memory is 8.0 GB. [2021-06-13 07:28:07,965 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 199.2 MB. Free memory is still 180.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 368.98 ms. Allocated memory is still 199.2 MB. Free memory was 162.0 MB in the beginning and 159.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 24.23 ms. Allocated memory is still 199.2 MB. Free memory was 159.7 MB in the beginning and 158.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 12.94 ms. Allocated memory is still 199.2 MB. Free memory was 158.0 MB in the beginning and 156.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 438.65 ms. Allocated memory is still 199.2 MB. Free memory was 156.6 MB in the beginning and 132.4 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3075.00 ms. Allocated memory was 199.2 MB in the beginning and 267.4 MB in the end (delta: 68.2 MB). Free memory was 131.9 MB in the beginning and 126.7 MB in the end (delta: 5.2 MB). Peak memory consumption was 74.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 21.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3004.5ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1700.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 63.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 124 SDtfs, 269 SDslu, 375 SDs, 0 SdLazy, 451 SolverSat, 73 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 311.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 131 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1101.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=317occurred in iteration=5, InterpolantAutomatonStates: 103, 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: 24.2ms SsaConstructionTime, 181.8ms SatisfiabilityAnalysisTime, 865.7ms InterpolantComputationTime, 555 NumberOfCodeBlocks, 555 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 545 ConstructedInterpolants, 0 QuantifiedInterpolants, 2037 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...