/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 00:02:12,546 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 00:02:12,548 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 00:02:12,571 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 00:02:12,571 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 00:02:12,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 00:02:12,573 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 00:02:12,575 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 00:02:12,576 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 00:02:12,577 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 00:02:12,578 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 00:02:12,579 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 00:02:12,579 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 00:02:12,580 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 00:02:12,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 00:02:12,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 00:02:12,583 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 00:02:12,584 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 00:02:12,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 00:02:12,587 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 00:02:12,588 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 00:02:12,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 00:02:12,591 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 00:02:12,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 00:02:12,594 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 00:02:12,597 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 00:02:12,598 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 00:02:12,599 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 00:02:12,600 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 00:02:12,601 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 00:02:12,601 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 00:02:12,602 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 00:02:12,602 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 00:02:12,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 00:02:12,603 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 00:02:12,604 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 00:02:12,604 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-SemanticLbe.epf [2020-10-16 00:02:12,626 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 00:02:12,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 00:02:12,627 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 00:02:12,628 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 00:02:12,628 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 00:02:12,628 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 00:02:12,628 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 00:02:12,628 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 00:02:12,629 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 00:02:12,629 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 00:02:12,629 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 00:02:12,629 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 00:02:12,629 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 00:02:12,629 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 00:02:12,630 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 00:02:12,630 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 00:02:12,630 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 00:02:12,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 00:02:12,630 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 00:02:12,631 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 00:02:12,631 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 00:02:12,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 00:02:12,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 00:02:12,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 00:02:12,635 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 00:02:12,635 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 00:02:12,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 00:02:12,635 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 00:02:12,635 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 00:02:12,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 00:02:12,959 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 00:02:12,964 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 00:02:12,966 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 00:02:12,966 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 00:02:12,967 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2020-10-16 00:02:13,033 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09b90a4c6/8ea896f1798b438f8ce95b55c6a738bc/FLAGa9e02ef5d [2020-10-16 00:02:13,489 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 00:02:13,490 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2020-10-16 00:02:13,505 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09b90a4c6/8ea896f1798b438f8ce95b55c6a738bc/FLAGa9e02ef5d [2020-10-16 00:02:13,851 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09b90a4c6/8ea896f1798b438f8ce95b55c6a738bc [2020-10-16 00:02:13,859 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 00:02:13,860 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 00:02:13,861 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 00:02:13,861 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 00:02:13,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 00:02:13,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:02:13" (1/1) ... [2020-10-16 00:02:13,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50c49929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:02:13, skipping insertion in model container [2020-10-16 00:02:13,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:02:13" (1/1) ... [2020-10-16 00:02:13,876 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 00:02:13,936 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 00:02:14,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 00:02:14,425 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 00:02:14,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 00:02:14,593 INFO L208 MainTranslator]: Completed translation [2020-10-16 00:02:14,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:02:14 WrapperNode [2020-10-16 00:02:14,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 00:02:14,596 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 00:02:14,596 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 00:02:14,596 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 00:02:14,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:02:14" (1/1) ... [2020-10-16 00:02:14,618 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:02:14" (1/1) ... [2020-10-16 00:02:14,640 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 00:02:14,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 00:02:14,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 00:02:14,641 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 00:02:14,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:02:14" (1/1) ... [2020-10-16 00:02:14,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:02:14" (1/1) ... [2020-10-16 00:02:14,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:02:14" (1/1) ... [2020-10-16 00:02:14,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:02:14" (1/1) ... [2020-10-16 00:02:14,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:02:14" (1/1) ... [2020-10-16 00:02:14,659 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:02:14" (1/1) ... [2020-10-16 00:02:14,661 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:02:14" (1/1) ... [2020-10-16 00:02:14,664 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 00:02:14,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 00:02:14,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 00:02:14,665 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 00:02:14,665 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:02:14" (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 [2020-10-16 00:02:14,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-16 00:02:14,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 00:02:14,731 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2020-10-16 00:02:14,731 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2020-10-16 00:02:14,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 00:02:14,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 00:02:14,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 00:02:14,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 00:02:14,732 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2020-10-16 00:02:14,732 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2020-10-16 00:02:14,734 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 00:02:15,169 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 00:02:15,170 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-16 00:02:15,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:02:15 BoogieIcfgContainer [2020-10-16 00:02:15,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 00:02:15,173 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 00:02:15,173 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 00:02:15,176 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 00:02:15,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:02:13" (1/3) ... [2020-10-16 00:02:15,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67f9fbc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:02:15, skipping insertion in model container [2020-10-16 00:02:15,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:02:14" (2/3) ... [2020-10-16 00:02:15,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67f9fbc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:02:15, skipping insertion in model container [2020-10-16 00:02:15,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:02:15" (3/3) ... [2020-10-16 00:02:15,180 INFO L111 eAbstractionObserver]: Analyzing ICFG read_write_lock-1.i [2020-10-16 00:02:15,191 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 00:02:15,198 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 00:02:15,199 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 00:02:15,228 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,228 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,229 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,229 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,229 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,230 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,230 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,230 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,230 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,231 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,231 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,232 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,232 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,232 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,232 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,233 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,233 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,233 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,233 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,234 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,234 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,234 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,235 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,235 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,235 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,236 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,236 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,236 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,236 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,236 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,237 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,237 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,237 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,237 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,238 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,238 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,238 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,238 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,242 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,242 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,242 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,242 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,243 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,243 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,248 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,248 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,248 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,248 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,249 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,249 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,249 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,255 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,256 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,256 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,256 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,256 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,257 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,259 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,259 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,259 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,259 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,259 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,260 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,260 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:02:15,293 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-16 00:02:15,312 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 00:02:15,312 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 00:02:15,312 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 00:02:15,313 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 00:02:15,313 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 00:02:15,313 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 00:02:15,313 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 00:02:15,313 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 00:02:15,328 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 100 transitions, 268 flow [2020-10-16 00:02:15,394 INFO L129 PetriNetUnfolder]: 19/134 cut-off events. [2020-10-16 00:02:15,394 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2020-10-16 00:02:15,401 INFO L80 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 134 events. 19/134 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 333 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 91. Up to 12 conditions per place. [2020-10-16 00:02:15,402 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 100 transitions, 268 flow [2020-10-16 00:02:15,408 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 80 transitions, 208 flow [2020-10-16 00:02:15,411 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 00:02:15,413 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 80 transitions, 208 flow [2020-10-16 00:02:15,416 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 80 transitions, 208 flow [2020-10-16 00:02:15,416 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 82 places, 80 transitions, 208 flow [2020-10-16 00:02:15,450 INFO L129 PetriNetUnfolder]: 16/118 cut-off events. [2020-10-16 00:02:15,450 INFO L130 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2020-10-16 00:02:15,452 INFO L80 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 118 events. 16/118 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 316 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 91. Up to 12 conditions per place. [2020-10-16 00:02:15,457 INFO L117 LiptonReduction]: Number of co-enabled transitions 2448 [2020-10-16 00:02:17,099 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2020-10-16 00:02:17,222 INFO L132 LiptonReduction]: Checked pairs total: 14069 [2020-10-16 00:02:17,222 INFO L134 LiptonReduction]: Total number of compositions: 41 [2020-10-16 00:02:17,226 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1817 [2020-10-16 00:02:17,236 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2020-10-16 00:02:17,236 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 00:02:17,236 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:02:17,237 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 00:02:17,238 INFO L429 AbstractCegarLoop]: === Iteration 1 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 00:02:17,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:02:17,246 INFO L82 PathProgramCache]: Analyzing trace with hash 105439626, now seen corresponding path program 1 times [2020-10-16 00:02:17,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:02:17,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763961958] [2020-10-16 00:02:17,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:02:17,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:02:17,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 00:02:17,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763961958] [2020-10-16 00:02:17,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 00:02:17,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 00:02:17,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073235113] [2020-10-16 00:02:17,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 00:02:17,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:02:17,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 00:02:17,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 00:02:17,514 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 141 [2020-10-16 00:02:17,519 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 140 flow. Second operand 4 states. [2020-10-16 00:02:17,520 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:02:17,520 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 141 [2020-10-16 00:02:17,521 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:02:17,826 INFO L129 PetriNetUnfolder]: 453/1468 cut-off events. [2020-10-16 00:02:17,826 INFO L130 PetriNetUnfolder]: For 405/405 co-relation queries the response was YES. [2020-10-16 00:02:17,834 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2390 conditions, 1468 events. 453/1468 cut-off events. For 405/405 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 12976 event pairs, 42 based on Foata normal form. 29/1391 useless extension candidates. Maximal degree in co-relation 1837. Up to 304 conditions per place. [2020-10-16 00:02:17,846 INFO L132 encePairwiseOnDemand]: 130/141 looper letters, 22 selfloop transitions, 17 changer transitions 0/71 dead transitions. [2020-10-16 00:02:17,846 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 71 transitions, 271 flow [2020-10-16 00:02:17,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 00:02:17,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 00:02:17,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 582 transitions. [2020-10-16 00:02:17,870 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.825531914893617 [2020-10-16 00:02:17,871 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 582 transitions. [2020-10-16 00:02:17,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 582 transitions. [2020-10-16 00:02:17,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:02:17,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 582 transitions. [2020-10-16 00:02:17,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 00:02:17,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 00:02:17,890 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 00:02:17,893 INFO L185 Difference]: Start difference. First operand has 49 places, 46 transitions, 140 flow. Second operand 5 states and 582 transitions. [2020-10-16 00:02:17,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 71 transitions, 271 flow [2020-10-16 00:02:17,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 71 transitions, 237 flow, removed 0 selfloop flow, removed 8 redundant places. [2020-10-16 00:02:17,914 INFO L241 Difference]: Finished difference. Result has 49 places, 60 transitions, 232 flow [2020-10-16 00:02:17,918 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=232, PETRI_PLACES=49, PETRI_TRANSITIONS=60} [2020-10-16 00:02:17,919 INFO L342 CegarLoopForPetriNet]: 49 programPoint places, 0 predicate places. [2020-10-16 00:02:17,919 INFO L481 AbstractCegarLoop]: Abstraction has has 49 places, 60 transitions, 232 flow [2020-10-16 00:02:17,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 00:02:17,919 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:02:17,920 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 00:02:17,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 00:02:17,920 INFO L429 AbstractCegarLoop]: === Iteration 2 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 00:02:17,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:02:17,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1751723592, now seen corresponding path program 1 times [2020-10-16 00:02:17,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:02:17,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721748846] [2020-10-16 00:02:17,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:02:17,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:02:17,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 00:02:17,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721748846] [2020-10-16 00:02:17,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 00:02:17,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 00:02:17,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648646813] [2020-10-16 00:02:17,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 00:02:17,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:02:17,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 00:02:17,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 00:02:17,990 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 141 [2020-10-16 00:02:17,991 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 60 transitions, 232 flow. Second operand 4 states. [2020-10-16 00:02:17,991 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:02:17,991 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 141 [2020-10-16 00:02:17,991 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:02:18,422 INFO L129 PetriNetUnfolder]: 755/2951 cut-off events. [2020-10-16 00:02:18,422 INFO L130 PetriNetUnfolder]: For 360/556 co-relation queries the response was YES. [2020-10-16 00:02:18,435 INFO L80 FinitePrefix]: Finished finitePrefix Result has 4664 conditions, 2951 events. 755/2951 cut-off events. For 360/556 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 32274 event pairs, 118 based on Foata normal form. 36/2842 useless extension candidates. Maximal degree in co-relation 2800. Up to 454 conditions per place. [2020-10-16 00:02:18,450 INFO L132 encePairwiseOnDemand]: 134/141 looper letters, 4 selfloop transitions, 9 changer transitions 0/66 dead transitions. [2020-10-16 00:02:18,450 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 66 transitions, 270 flow [2020-10-16 00:02:18,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 00:02:18,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 00:02:18,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 475 transitions. [2020-10-16 00:02:18,453 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8421985815602837 [2020-10-16 00:02:18,453 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 475 transitions. [2020-10-16 00:02:18,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 475 transitions. [2020-10-16 00:02:18,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:02:18,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 475 transitions. [2020-10-16 00:02:18,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 00:02:18,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 00:02:18,457 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 00:02:18,457 INFO L185 Difference]: Start difference. First operand has 49 places, 60 transitions, 232 flow. Second operand 4 states and 475 transitions. [2020-10-16 00:02:18,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 66 transitions, 270 flow [2020-10-16 00:02:18,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 66 transitions, 270 flow, removed 0 selfloop flow, removed 0 redundant places. [2020-10-16 00:02:18,463 INFO L241 Difference]: Finished difference. Result has 55 places, 66 transitions, 292 flow [2020-10-16 00:02:18,464 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=292, PETRI_PLACES=55, PETRI_TRANSITIONS=66} [2020-10-16 00:02:18,464 INFO L342 CegarLoopForPetriNet]: 49 programPoint places, 6 predicate places. [2020-10-16 00:02:18,465 INFO L481 AbstractCegarLoop]: Abstraction has has 55 places, 66 transitions, 292 flow [2020-10-16 00:02:18,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 00:02:18,465 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:02:18,465 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 00:02:18,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 00:02:18,465 INFO L429 AbstractCegarLoop]: === Iteration 3 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 00:02:18,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:02:18,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1186153986, now seen corresponding path program 2 times [2020-10-16 00:02:18,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:02:18,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724599415] [2020-10-16 00:02:18,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:02:18,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:02:18,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 00:02:18,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724599415] [2020-10-16 00:02:18,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 00:02:18,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 00:02:18,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559581672] [2020-10-16 00:02:18,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 00:02:18,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:02:18,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 00:02:18,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 00:02:18,511 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 141 [2020-10-16 00:02:18,511 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 66 transitions, 292 flow. Second operand 3 states. [2020-10-16 00:02:18,511 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:02:18,511 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 141 [2020-10-16 00:02:18,511 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:02:18,712 INFO L129 PetriNetUnfolder]: 385/1632 cut-off events. [2020-10-16 00:02:18,712 INFO L130 PetriNetUnfolder]: For 507/567 co-relation queries the response was YES. [2020-10-16 00:02:18,724 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2688 conditions, 1632 events. 385/1632 cut-off events. For 507/567 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 16142 event pairs, 7 based on Foata normal form. 56/1623 useless extension candidates. Maximal degree in co-relation 1558. Up to 268 conditions per place. [2020-10-16 00:02:18,732 INFO L132 encePairwiseOnDemand]: 135/141 looper letters, 5 selfloop transitions, 6 changer transitions 0/65 dead transitions. [2020-10-16 00:02:18,733 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 65 transitions, 308 flow [2020-10-16 00:02:18,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 00:02:18,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 00:02:18,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 353 transitions. [2020-10-16 00:02:18,736 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.83451536643026 [2020-10-16 00:02:18,736 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 353 transitions. [2020-10-16 00:02:18,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 353 transitions. [2020-10-16 00:02:18,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:02:18,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 353 transitions. [2020-10-16 00:02:18,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 00:02:18,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 00:02:18,740 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 00:02:18,740 INFO L185 Difference]: Start difference. First operand has 55 places, 66 transitions, 292 flow. Second operand 3 states and 353 transitions. [2020-10-16 00:02:18,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 65 transitions, 308 flow [2020-10-16 00:02:18,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 65 transitions, 308 flow, removed 0 selfloop flow, removed 0 redundant places. [2020-10-16 00:02:18,745 INFO L241 Difference]: Finished difference. Result has 58 places, 65 transitions, 308 flow [2020-10-16 00:02:18,746 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=308, PETRI_PLACES=58, PETRI_TRANSITIONS=65} [2020-10-16 00:02:18,748 INFO L342 CegarLoopForPetriNet]: 49 programPoint places, 9 predicate places. [2020-10-16 00:02:18,749 INFO L481 AbstractCegarLoop]: Abstraction has has 58 places, 65 transitions, 308 flow [2020-10-16 00:02:18,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 00:02:18,752 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:02:18,752 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 00:02:18,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 00:02:18,756 INFO L429 AbstractCegarLoop]: === Iteration 4 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 00:02:18,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:02:18,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1588330019, now seen corresponding path program 1 times [2020-10-16 00:02:18,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:02:18,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137630339] [2020-10-16 00:02:18,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:02:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:02:18,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 00:02:18,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137630339] [2020-10-16 00:02:18,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 00:02:18,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 00:02:18,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445419396] [2020-10-16 00:02:18,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 00:02:18,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:02:18,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 00:02:18,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 00:02:18,889 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 141 [2020-10-16 00:02:18,890 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 65 transitions, 308 flow. Second operand 4 states. [2020-10-16 00:02:18,890 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:02:18,890 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 141 [2020-10-16 00:02:18,890 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:02:19,239 INFO L129 PetriNetUnfolder]: 498/2005 cut-off events. [2020-10-16 00:02:19,239 INFO L130 PetriNetUnfolder]: For 1056/1088 co-relation queries the response was YES. [2020-10-16 00:02:19,249 INFO L80 FinitePrefix]: Finished finitePrefix Result has 3699 conditions, 2005 events. 498/2005 cut-off events. For 1056/1088 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 19999 event pairs, 15 based on Foata normal form. 43/1969 useless extension candidates. Maximal degree in co-relation 2007. Up to 324 conditions per place. [2020-10-16 00:02:19,256 INFO L132 encePairwiseOnDemand]: 131/141 looper letters, 30 selfloop transitions, 29 changer transitions 0/96 dead transitions. [2020-10-16 00:02:19,256 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 96 transitions, 597 flow [2020-10-16 00:02:19,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 00:02:19,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 00:02:19,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 571 transitions. [2020-10-16 00:02:19,258 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8099290780141843 [2020-10-16 00:02:19,259 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 571 transitions. [2020-10-16 00:02:19,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 571 transitions. [2020-10-16 00:02:19,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:02:19,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 571 transitions. [2020-10-16 00:02:19,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 00:02:19,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 00:02:19,262 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 00:02:19,262 INFO L185 Difference]: Start difference. First operand has 58 places, 65 transitions, 308 flow. Second operand 5 states and 571 transitions. [2020-10-16 00:02:19,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 96 transitions, 597 flow [2020-10-16 00:02:19,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 96 transitions, 581 flow, removed 2 selfloop flow, removed 2 redundant places. [2020-10-16 00:02:19,269 INFO L241 Difference]: Finished difference. Result has 63 places, 89 transitions, 560 flow [2020-10-16 00:02:19,269 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=560, PETRI_PLACES=63, PETRI_TRANSITIONS=89} [2020-10-16 00:02:19,269 INFO L342 CegarLoopForPetriNet]: 49 programPoint places, 14 predicate places. [2020-10-16 00:02:19,270 INFO L481 AbstractCegarLoop]: Abstraction has has 63 places, 89 transitions, 560 flow [2020-10-16 00:02:19,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 00:02:19,270 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:02:19,270 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 00:02:19,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 00:02:19,270 INFO L429 AbstractCegarLoop]: === Iteration 5 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 00:02:19,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:02:19,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1725181126, now seen corresponding path program 1 times [2020-10-16 00:02:19,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:02:19,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316706073] [2020-10-16 00:02:19,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:02:19,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:02:19,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 00:02:19,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316706073] [2020-10-16 00:02:19,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 00:02:19,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 00:02:19,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28284290] [2020-10-16 00:02:19,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 00:02:19,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:02:19,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 00:02:19,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-16 00:02:19,318 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 141 [2020-10-16 00:02:19,318 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 89 transitions, 560 flow. Second operand 5 states. [2020-10-16 00:02:19,318 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:02:19,318 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 141 [2020-10-16 00:02:19,319 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:02:19,440 INFO L129 PetriNetUnfolder]: 202/935 cut-off events. [2020-10-16 00:02:19,441 INFO L130 PetriNetUnfolder]: For 748/831 co-relation queries the response was YES. [2020-10-16 00:02:19,446 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1822 conditions, 935 events. 202/935 cut-off events. For 748/831 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 8061 event pairs, 0 based on Foata normal form. 38/947 useless extension candidates. Maximal degree in co-relation 1161. Up to 148 conditions per place. [2020-10-16 00:02:19,448 INFO L132 encePairwiseOnDemand]: 134/141 looper letters, 0 selfloop transitions, 0 changer transitions 73/73 dead transitions. [2020-10-16 00:02:19,448 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 73 transitions, 452 flow [2020-10-16 00:02:19,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 00:02:19,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 00:02:19,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 588 transitions. [2020-10-16 00:02:19,451 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8340425531914893 [2020-10-16 00:02:19,451 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 588 transitions. [2020-10-16 00:02:19,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 588 transitions. [2020-10-16 00:02:19,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:02:19,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 588 transitions. [2020-10-16 00:02:19,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 00:02:19,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 00:02:19,454 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 00:02:19,454 INFO L185 Difference]: Start difference. First operand has 63 places, 89 transitions, 560 flow. Second operand 5 states and 588 transitions. [2020-10-16 00:02:19,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 73 transitions, 452 flow [2020-10-16 00:02:19,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 73 transitions, 446 flow, removed 3 selfloop flow, removed 0 redundant places. [2020-10-16 00:02:19,460 INFO L241 Difference]: Finished difference. Result has 65 places, 0 transitions, 0 flow [2020-10-16 00:02:19,460 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=61, 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=5, PETRI_FLOW=0, PETRI_PLACES=65, PETRI_TRANSITIONS=0} [2020-10-16 00:02:19,460 INFO L342 CegarLoopForPetriNet]: 49 programPoint places, 16 predicate places. [2020-10-16 00:02:19,460 INFO L481 AbstractCegarLoop]: Abstraction has has 65 places, 0 transitions, 0 flow [2020-10-16 00:02:19,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 00:02:19,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 00:02:19,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 12:02:19 BasicIcfg [2020-10-16 00:02:19,465 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 00:02:19,467 INFO L168 Benchmark]: Toolchain (without parser) took 5606.26 ms. Allocated memory was 251.7 MB in the beginning and 426.8 MB in the end (delta: 175.1 MB). Free memory was 206.1 MB in the beginning and 316.8 MB in the end (delta: -110.6 MB). Peak memory consumption was 64.5 MB. Max. memory is 14.2 GB. [2020-10-16 00:02:19,467 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 251.7 MB. Free memory is still 228.0 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 00:02:19,468 INFO L168 Benchmark]: CACSL2BoogieTranslator took 734.15 ms. Allocated memory was 251.7 MB in the beginning and 314.0 MB in the end (delta: 62.4 MB). Free memory was 206.1 MB in the beginning and 269.6 MB in the end (delta: -63.5 MB). Peak memory consumption was 29.6 MB. Max. memory is 14.2 GB. [2020-10-16 00:02:19,469 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.20 ms. Allocated memory is still 314.0 MB. Free memory was 269.6 MB in the beginning and 267.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 00:02:19,470 INFO L168 Benchmark]: Boogie Preprocessor took 23.70 ms. Allocated memory is still 314.0 MB. Free memory was 267.1 MB in the beginning and 264.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 00:02:19,471 INFO L168 Benchmark]: RCFGBuilder took 507.73 ms. Allocated memory is still 314.0 MB. Free memory was 264.6 MB in the beginning and 235.2 MB in the end (delta: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 14.2 GB. [2020-10-16 00:02:19,471 INFO L168 Benchmark]: TraceAbstraction took 4291.72 ms. Allocated memory was 314.0 MB in the beginning and 426.8 MB in the end (delta: 112.7 MB). Free memory was 235.2 MB in the beginning and 316.8 MB in the end (delta: -81.6 MB). Peak memory consumption was 31.1 MB. Max. memory is 14.2 GB. [2020-10-16 00:02:19,476 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 251.7 MB. Free memory is still 228.0 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 734.15 ms. Allocated memory was 251.7 MB in the beginning and 314.0 MB in the end (delta: 62.4 MB). Free memory was 206.1 MB in the beginning and 269.6 MB in the end (delta: -63.5 MB). Peak memory consumption was 29.6 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 44.20 ms. Allocated memory is still 314.0 MB. Free memory was 269.6 MB in the beginning and 267.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 23.70 ms. Allocated memory is still 314.0 MB. Free memory was 267.1 MB in the beginning and 264.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 507.73 ms. Allocated memory is still 314.0 MB. Free memory was 264.6 MB in the beginning and 235.2 MB in the end (delta: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 14.2 GB. * TraceAbstraction took 4291.72 ms. Allocated memory was 314.0 MB in the beginning and 426.8 MB in the end (delta: 112.7 MB). Free memory was 235.2 MB in the beginning and 316.8 MB in the end (delta: -81.6 MB). Peak memory consumption was 31.1 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1865 VarBasedMoverChecksPositive, 78 VarBasedMoverChecksNegative, 30 SemBasedMoverChecksPositive, 48 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 660 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.8s, 82 PlacesBefore, 49 PlacesAfterwards, 80 TransitionsBefore, 46 TransitionsAfterwards, 2448 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 41 TotalNumberOfCompositions, 14069 MoverChecksTotal - PositiveResult [Line: 700]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 4.1s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 35 SDtfs, 31 SDslu, 6 SDs, 0 SdLazy, 114 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=560occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 1628 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...