./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec2_product09.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec2_product09.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4cb164e6307f0ddcae5850d7f4578967441d1456f6ed5a5be472ba090758b873 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 12:56:13,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 12:56:13,368 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 12:56:13,390 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 12:56:13,391 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 12:56:13,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 12:56:13,394 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 12:56:13,398 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 12:56:13,400 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 12:56:13,401 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 12:56:13,401 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 12:56:13,403 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 12:56:13,404 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 12:56:13,409 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 12:56:13,411 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 12:56:13,412 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 12:56:13,414 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 12:56:13,415 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 12:56:13,417 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 12:56:13,420 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 12:56:13,425 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 12:56:13,426 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 12:56:13,427 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 12:56:13,427 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 12:56:13,430 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 12:56:13,434 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 12:56:13,434 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 12:56:13,435 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 12:56:13,435 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 12:56:13,436 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 12:56:13,436 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 12:56:13,437 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 12:56:13,438 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 12:56:13,439 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 12:56:13,440 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 12:56:13,440 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 12:56:13,441 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 12:56:13,441 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 12:56:13,442 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 12:56:13,442 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 12:56:13,443 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 12:56:13,444 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 12:56:13,464 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 12:56:13,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 12:56:13,465 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 12:56:13,465 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 12:56:13,465 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 12:56:13,465 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 12:56:13,466 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 12:56:13,466 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 12:56:13,466 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 12:56:13,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 12:56:13,466 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 12:56:13,466 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 12:56:13,466 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 12:56:13,467 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 12:56:13,467 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 12:56:13,467 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 12:56:13,467 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 12:56:13,467 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 12:56:13,467 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 12:56:13,467 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 12:56:13,467 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 12:56:13,467 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 12:56:13,468 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 12:56:13,468 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 12:56:13,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:56:13,468 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 12:56:13,468 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 12:56:13,468 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 12:56:13,468 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 12:56:13,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 12:56:13,468 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 12:56:13,468 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 12:56:13,468 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 12:56:13,469 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 12:56:13,469 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4cb164e6307f0ddcae5850d7f4578967441d1456f6ed5a5be472ba090758b873 [2021-12-21 12:56:13,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 12:56:13,680 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 12:56:13,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 12:56:13,683 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 12:56:13,685 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 12:56:13,686 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec2_product09.cil.c [2021-12-21 12:56:13,739 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d079a58f/6e1eb7287671433dbffe2b56882e37fb/FLAGbaee75459 [2021-12-21 12:56:14,253 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 12:56:14,254 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product09.cil.c [2021-12-21 12:56:14,275 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d079a58f/6e1eb7287671433dbffe2b56882e37fb/FLAGbaee75459 [2021-12-21 12:56:14,757 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d079a58f/6e1eb7287671433dbffe2b56882e37fb [2021-12-21 12:56:14,759 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 12:56:14,760 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 12:56:14,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 12:56:14,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 12:56:14,763 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 12:56:14,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:56:14" (1/1) ... [2021-12-21 12:56:14,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@317c3a73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:56:14, skipping insertion in model container [2021-12-21 12:56:14,765 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:56:14" (1/1) ... [2021-12-21 12:56:14,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 12:56:14,844 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 12:56:15,178 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product09.cil.c[28842,28855] [2021-12-21 12:56:15,331 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 12:56:15,346 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 12:56:15,389 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product09.cil.c[28842,28855] [2021-12-21 12:56:15,453 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 12:56:15,477 INFO L208 MainTranslator]: Completed translation [2021-12-21 12:56:15,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:56:15 WrapperNode [2021-12-21 12:56:15,478 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 12:56:15,479 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 12:56:15,479 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 12:56:15,479 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 12:56:15,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:56:15" (1/1) ... [2021-12-21 12:56:15,518 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:56:15" (1/1) ... [2021-12-21 12:56:15,602 INFO L137 Inliner]: procedures = 89, calls = 330, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 812 [2021-12-21 12:56:15,603 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 12:56:15,604 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 12:56:15,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 12:56:15,604 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 12:56:15,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:56:15" (1/1) ... [2021-12-21 12:56:15,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:56:15" (1/1) ... [2021-12-21 12:56:15,625 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:56:15" (1/1) ... [2021-12-21 12:56:15,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:56:15" (1/1) ... [2021-12-21 12:56:15,649 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:56:15" (1/1) ... [2021-12-21 12:56:15,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:56:15" (1/1) ... [2021-12-21 12:56:15,686 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:56:15" (1/1) ... [2021-12-21 12:56:15,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 12:56:15,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 12:56:15,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 12:56:15,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 12:56:15,700 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:56:15" (1/1) ... [2021-12-21 12:56:15,706 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:56:15,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:56:15,728 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 12:56:15,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 12:56:15,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 12:56:15,765 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2021-12-21 12:56:15,765 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2021-12-21 12:56:15,766 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2021-12-21 12:56:15,766 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2021-12-21 12:56:15,766 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2021-12-21 12:56:15,766 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2021-12-21 12:56:15,766 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2021-12-21 12:56:15,766 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2021-12-21 12:56:15,767 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-12-21 12:56:15,767 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-12-21 12:56:15,767 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-12-21 12:56:15,767 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-12-21 12:56:15,767 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2021-12-21 12:56:15,768 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2021-12-21 12:56:15,768 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-12-21 12:56:15,768 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-12-21 12:56:15,768 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2021-12-21 12:56:15,768 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2021-12-21 12:56:15,768 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2021-12-21 12:56:15,768 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2021-12-21 12:56:15,769 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2021-12-21 12:56:15,769 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2021-12-21 12:56:15,769 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2021-12-21 12:56:15,769 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2021-12-21 12:56:15,769 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2021-12-21 12:56:15,769 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2021-12-21 12:56:15,770 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2021-12-21 12:56:15,770 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2021-12-21 12:56:15,770 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2021-12-21 12:56:15,770 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2021-12-21 12:56:15,770 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2021-12-21 12:56:15,770 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2021-12-21 12:56:15,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 12:56:15,771 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2021-12-21 12:56:15,771 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2021-12-21 12:56:15,771 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2021-12-21 12:56:15,771 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2021-12-21 12:56:15,771 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2021-12-21 12:56:15,772 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2021-12-21 12:56:15,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 12:56:15,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 12:56:15,772 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2021-12-21 12:56:15,772 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2021-12-21 12:56:15,930 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 12:56:15,932 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 12:56:16,742 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 12:56:16,751 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 12:56:16,751 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 12:56:16,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:56:16 BoogieIcfgContainer [2021-12-21 12:56:16,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 12:56:16,755 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 12:56:16,755 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 12:56:16,758 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 12:56:16,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 12:56:14" (1/3) ... [2021-12-21 12:56:16,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c8f99da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:56:16, skipping insertion in model container [2021-12-21 12:56:16,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:56:15" (2/3) ... [2021-12-21 12:56:16,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c8f99da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:56:16, skipping insertion in model container [2021-12-21 12:56:16,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:56:16" (3/3) ... [2021-12-21 12:56:16,762 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product09.cil.c [2021-12-21 12:56:16,766 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 12:56:16,767 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 12:56:16,816 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 12:56:16,821 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 12:56:16,821 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 12:56:16,844 INFO L276 IsEmpty]: Start isEmpty. Operand has 526 states, 418 states have (on average 1.7177033492822966) internal successors, (718), 439 states have internal predecessors, (718), 86 states have call successors, (86), 20 states have call predecessors, (86), 20 states have return successors, (86), 80 states have call predecessors, (86), 86 states have call successors, (86) [2021-12-21 12:56:16,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-21 12:56:16,866 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:56:16,867 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:56:16,867 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:56:16,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:56:16,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1063489521, now seen corresponding path program 1 times [2021-12-21 12:56:16,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:56:16,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157606036] [2021-12-21 12:56:16,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:56:16,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:56:17,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:17,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 12:56:17,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:17,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:56:17,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:17,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:56:17,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:17,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-21 12:56:17,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:17,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:56:17,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:17,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:56:17,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:17,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-21 12:56:17,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:17,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-21 12:56:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:17,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:56:17,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:56:17,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157606036] [2021-12-21 12:56:17,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157606036] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:56:17,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:56:17,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 12:56:17,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883389758] [2021-12-21 12:56:17,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:56:17,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 12:56:17,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:56:17,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 12:56:17,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-21 12:56:17,778 INFO L87 Difference]: Start difference. First operand has 526 states, 418 states have (on average 1.7177033492822966) internal successors, (718), 439 states have internal predecessors, (718), 86 states have call successors, (86), 20 states have call predecessors, (86), 20 states have return successors, (86), 80 states have call predecessors, (86), 86 states have call successors, (86) Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 12:56:25,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:56:25,528 INFO L93 Difference]: Finished difference Result 1499 states and 2644 transitions. [2021-12-21 12:56:25,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 12:56:25,530 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 74 [2021-12-21 12:56:25,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:56:25,554 INFO L225 Difference]: With dead ends: 1499 [2021-12-21 12:56:25,554 INFO L226 Difference]: Without dead ends: 985 [2021-12-21 12:56:25,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2021-12-21 12:56:25,568 INFO L933 BasicCegarLoop]: 936 mSDtfsCounter, 1389 mSDsluCounter, 2461 mSDsCounter, 0 mSdLazyCounter, 4690 mSolverCounterSat, 619 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1459 SdHoareTripleChecker+Valid, 3397 SdHoareTripleChecker+Invalid, 5309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 619 IncrementalHoareTripleChecker+Valid, 4690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-12-21 12:56:25,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1459 Valid, 3397 Invalid, 5309 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [619 Valid, 4690 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2021-12-21 12:56:25,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985 states. [2021-12-21 12:56:25,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985 to 520. [2021-12-21 12:56:25,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 414 states have (on average 1.710144927536232) internal successors, (708), 433 states have internal predecessors, (708), 86 states have call successors, (86), 20 states have call predecessors, (86), 19 states have return successors, (81), 79 states have call predecessors, (81), 81 states have call successors, (81) [2021-12-21 12:56:25,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 875 transitions. [2021-12-21 12:56:25,730 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 875 transitions. Word has length 74 [2021-12-21 12:56:25,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:56:25,730 INFO L470 AbstractCegarLoop]: Abstraction has 520 states and 875 transitions. [2021-12-21 12:56:25,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 12:56:25,731 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 875 transitions. [2021-12-21 12:56:25,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-12-21 12:56:25,746 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:56:25,746 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:56:25,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 12:56:25,747 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:56:25,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:56:25,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1687716467, now seen corresponding path program 1 times [2021-12-21 12:56:25,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:56:25,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517034093] [2021-12-21 12:56:25,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:56:25,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:56:25,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:25,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 12:56:25,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:25,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:56:25,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:25,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 12:56:25,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:26,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-21 12:56:26,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:26,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:56:26,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:26,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:56:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:26,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:56:26,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:26,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 12:56:26,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:26,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:56:26,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:56:26,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517034093] [2021-12-21 12:56:26,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517034093] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:56:26,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:56:26,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-21 12:56:26,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097429563] [2021-12-21 12:56:26,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:56:26,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 12:56:26,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:56:26,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 12:56:26,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-21 12:56:26,152 INFO L87 Difference]: Start difference. First operand 520 states and 875 transitions. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 12:56:31,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:56:31,992 INFO L93 Difference]: Finished difference Result 1324 states and 2278 transitions. [2021-12-21 12:56:31,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 12:56:31,993 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 80 [2021-12-21 12:56:31,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:56:31,999 INFO L225 Difference]: With dead ends: 1324 [2021-12-21 12:56:31,999 INFO L226 Difference]: Without dead ends: 822 [2021-12-21 12:56:32,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2021-12-21 12:56:32,003 INFO L933 BasicCegarLoop]: 972 mSDtfsCounter, 1014 mSDsluCounter, 3140 mSDsCounter, 0 mSdLazyCounter, 4953 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 4112 SdHoareTripleChecker+Invalid, 5252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 4953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-12-21 12:56:32,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1082 Valid, 4112 Invalid, 5252 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [299 Valid, 4953 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-12-21 12:56:32,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2021-12-21 12:56:32,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 524. [2021-12-21 12:56:32,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 417 states have (on average 1.7026378896882495) internal successors, (710), 436 states have internal predecessors, (710), 86 states have call successors, (86), 20 states have call predecessors, (86), 20 states have return successors, (83), 80 states have call predecessors, (83), 81 states have call successors, (83) [2021-12-21 12:56:32,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 879 transitions. [2021-12-21 12:56:32,064 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 879 transitions. Word has length 80 [2021-12-21 12:56:32,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:56:32,064 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 879 transitions. [2021-12-21 12:56:32,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 12:56:32,065 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 879 transitions. [2021-12-21 12:56:32,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-21 12:56:32,068 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:56:32,068 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:56:32,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 12:56:32,068 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:56:32,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:56:32,069 INFO L85 PathProgramCache]: Analyzing trace with hash -2018436953, now seen corresponding path program 1 times [2021-12-21 12:56:32,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:56:32,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018918944] [2021-12-21 12:56:32,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:56:32,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:56:32,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:32,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 12:56:32,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:32,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:56:32,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:32,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:56:32,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:32,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 12:56:32,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:32,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:56:32,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:32,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:56:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:32,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:56:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:32,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 12:56:32,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:32,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:56:32,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:56:32,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018918944] [2021-12-21 12:56:32,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018918944] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:56:32,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:56:32,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-21 12:56:32,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043209220] [2021-12-21 12:56:32,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:56:32,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-21 12:56:32,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:56:32,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-21 12:56:32,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-21 12:56:32,467 INFO L87 Difference]: Start difference. First operand 524 states and 879 transitions. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-21 12:56:44,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:56:44,367 INFO L93 Difference]: Finished difference Result 2467 states and 4405 transitions. [2021-12-21 12:56:44,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-21 12:56:44,367 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 85 [2021-12-21 12:56:44,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:56:44,382 INFO L225 Difference]: With dead ends: 2467 [2021-12-21 12:56:44,382 INFO L226 Difference]: Without dead ends: 1961 [2021-12-21 12:56:44,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=260, Invalid=670, Unknown=0, NotChecked=0, Total=930 [2021-12-21 12:56:44,393 INFO L933 BasicCegarLoop]: 1058 mSDtfsCounter, 3646 mSDsluCounter, 3858 mSDsCounter, 0 mSdLazyCounter, 8490 mSolverCounterSat, 1500 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3722 SdHoareTripleChecker+Valid, 4916 SdHoareTripleChecker+Invalid, 9990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1500 IncrementalHoareTripleChecker+Valid, 8490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2021-12-21 12:56:44,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3722 Valid, 4916 Invalid, 9990 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1500 Valid, 8490 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2021-12-21 12:56:44,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1961 states. [2021-12-21 12:56:44,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1961 to 1377. [2021-12-21 12:56:44,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1085 states have (on average 1.6617511520737327) internal successors, (1803), 1132 states have internal predecessors, (1803), 235 states have call successors, (235), 53 states have call predecessors, (235), 56 states have return successors, (269), 227 states have call predecessors, (269), 230 states have call successors, (269) [2021-12-21 12:56:44,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 2307 transitions. [2021-12-21 12:56:44,636 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 2307 transitions. Word has length 85 [2021-12-21 12:56:44,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:56:44,638 INFO L470 AbstractCegarLoop]: Abstraction has 1377 states and 2307 transitions. [2021-12-21 12:56:44,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-21 12:56:44,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 2307 transitions. [2021-12-21 12:56:44,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-21 12:56:44,645 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:56:44,645 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:56:44,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 12:56:44,645 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:56:44,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:56:44,646 INFO L85 PathProgramCache]: Analyzing trace with hash 620001365, now seen corresponding path program 1 times [2021-12-21 12:56:44,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:56:44,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993445708] [2021-12-21 12:56:44,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:56:44,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:56:44,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:44,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 12:56:44,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:44,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:56:44,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:44,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 12:56:44,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:44,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 12:56:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:44,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:56:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:44,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:56:44,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:44,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:56:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:45,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 12:56:45,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:45,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-21 12:56:45,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:45,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:56:45,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:56:45,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993445708] [2021-12-21 12:56:45,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993445708] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:56:45,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:56:45,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-21 12:56:45,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385754319] [2021-12-21 12:56:45,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:56:45,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-21 12:56:45,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:56:45,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-21 12:56:45,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-21 12:56:45,048 INFO L87 Difference]: Start difference. First operand 1377 states and 2307 transitions. Second operand has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-21 12:56:50,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:56:50,367 INFO L93 Difference]: Finished difference Result 3424 states and 5950 transitions. [2021-12-21 12:56:50,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 12:56:50,368 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 94 [2021-12-21 12:56:50,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:56:50,382 INFO L225 Difference]: With dead ends: 3424 [2021-12-21 12:56:50,382 INFO L226 Difference]: Without dead ends: 1924 [2021-12-21 12:56:50,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-12-21 12:56:50,391 INFO L933 BasicCegarLoop]: 924 mSDtfsCounter, 1599 mSDsluCounter, 2946 mSDsCounter, 0 mSdLazyCounter, 4690 mSolverCounterSat, 339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1658 SdHoareTripleChecker+Valid, 3870 SdHoareTripleChecker+Invalid, 5029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 4690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-12-21 12:56:50,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1658 Valid, 3870 Invalid, 5029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 4690 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2021-12-21 12:56:50,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1924 states. [2021-12-21 12:56:50,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1924 to 1377. [2021-12-21 12:56:50,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1085 states have (on average 1.6451612903225807) internal successors, (1785), 1132 states have internal predecessors, (1785), 235 states have call successors, (235), 53 states have call predecessors, (235), 56 states have return successors, (269), 227 states have call predecessors, (269), 230 states have call successors, (269) [2021-12-21 12:56:50,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 2289 transitions. [2021-12-21 12:56:50,585 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 2289 transitions. Word has length 94 [2021-12-21 12:56:50,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:56:50,586 INFO L470 AbstractCegarLoop]: Abstraction has 1377 states and 2289 transitions. [2021-12-21 12:56:50,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-21 12:56:50,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 2289 transitions. [2021-12-21 12:56:50,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-21 12:56:50,589 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:56:50,589 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:56:50,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 12:56:50,589 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:56:50,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:56:50,590 INFO L85 PathProgramCache]: Analyzing trace with hash -2018113095, now seen corresponding path program 1 times [2021-12-21 12:56:50,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:56:50,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64200701] [2021-12-21 12:56:50,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:56:50,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:56:50,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:50,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 12:56:50,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:50,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:56:50,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:50,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-21 12:56:50,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:50,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 12:56:50,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:50,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:56:50,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:50,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:56:50,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:50,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:56:50,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:50,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 12:56:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:50,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-21 12:56:50,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:50,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 12:56:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:50,912 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-21 12:56:50,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:56:50,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64200701] [2021-12-21 12:56:50,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64200701] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:56:50,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:56:50,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 12:56:50,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699548201] [2021-12-21 12:56:50,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:56:50,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 12:56:50,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:56:50,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 12:56:50,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-21 12:56:50,937 INFO L87 Difference]: Start difference. First operand 1377 states and 2289 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-21 12:56:54,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:56:54,914 INFO L93 Difference]: Finished difference Result 3283 states and 5622 transitions. [2021-12-21 12:56:54,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 12:56:54,915 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 97 [2021-12-21 12:56:54,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:56:54,926 INFO L225 Difference]: With dead ends: 3283 [2021-12-21 12:56:54,927 INFO L226 Difference]: Without dead ends: 1924 [2021-12-21 12:56:54,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-21 12:56:54,933 INFO L933 BasicCegarLoop]: 920 mSDtfsCounter, 941 mSDsluCounter, 1436 mSDsCounter, 0 mSdLazyCounter, 2534 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 2356 SdHoareTripleChecker+Invalid, 2791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 2534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-21 12:56:54,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1011 Valid, 2356 Invalid, 2791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 2534 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-21 12:56:54,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1924 states. [2021-12-21 12:56:55,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1924 to 1377. [2021-12-21 12:56:55,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1085 states have (on average 1.6442396313364056) internal successors, (1784), 1132 states have internal predecessors, (1784), 235 states have call successors, (235), 53 states have call predecessors, (235), 56 states have return successors, (269), 227 states have call predecessors, (269), 230 states have call successors, (269) [2021-12-21 12:56:55,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 2288 transitions. [2021-12-21 12:56:55,133 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 2288 transitions. Word has length 97 [2021-12-21 12:56:55,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:56:55,133 INFO L470 AbstractCegarLoop]: Abstraction has 1377 states and 2288 transitions. [2021-12-21 12:56:55,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-21 12:56:55,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 2288 transitions. [2021-12-21 12:56:55,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-21 12:56:55,139 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:56:55,139 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:56:55,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 12:56:55,140 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:56:55,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:56:55,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1537886588, now seen corresponding path program 1 times [2021-12-21 12:56:55,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:56:55,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371580046] [2021-12-21 12:56:55,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:56:55,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:56:55,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:55,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 12:56:55,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:55,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:56:55,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:55,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:56:55,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:55,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 12:56:55,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:55,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:56:55,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:55,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:56:55,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:55,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:56:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:55,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 12:56:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:55,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-21 12:56:55,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:55,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 12:56:55,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:56:55,575 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 12:56:55,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:56:55,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371580046] [2021-12-21 12:56:55,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371580046] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:56:55,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:56:55,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-21 12:56:55,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537094357] [2021-12-21 12:56:55,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:56:55,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-21 12:56:55,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:56:55,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-21 12:56:55,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-21 12:56:55,578 INFO L87 Difference]: Start difference. First operand 1377 states and 2288 transitions. Second operand has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-21 12:57:01,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:57:01,388 INFO L93 Difference]: Finished difference Result 3365 states and 5856 transitions. [2021-12-21 12:57:01,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-21 12:57:01,389 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 98 [2021-12-21 12:57:01,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:57:01,402 INFO L225 Difference]: With dead ends: 3365 [2021-12-21 12:57:01,402 INFO L226 Difference]: Without dead ends: 2046 [2021-12-21 12:57:01,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2021-12-21 12:57:01,409 INFO L933 BasicCegarLoop]: 923 mSDtfsCounter, 1624 mSDsluCounter, 4252 mSDsCounter, 0 mSdLazyCounter, 6051 mSolverCounterSat, 534 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1687 SdHoareTripleChecker+Valid, 5175 SdHoareTripleChecker+Invalid, 6585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 534 IncrementalHoareTripleChecker+Valid, 6051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-12-21 12:57:01,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1687 Valid, 5175 Invalid, 6585 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [534 Valid, 6051 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2021-12-21 12:57:01,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2046 states. [2021-12-21 12:57:01,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2046 to 1397. [2021-12-21 12:57:01,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1397 states, 1095 states have (on average 1.6337899543378995) internal successors, (1789), 1149 states have internal predecessors, (1789), 238 states have call successors, (238), 53 states have call predecessors, (238), 63 states have return successors, (301), 230 states have call predecessors, (301), 233 states have call successors, (301) [2021-12-21 12:57:01,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 2328 transitions. [2021-12-21 12:57:01,635 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 2328 transitions. Word has length 98 [2021-12-21 12:57:01,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:57:01,636 INFO L470 AbstractCegarLoop]: Abstraction has 1397 states and 2328 transitions. [2021-12-21 12:57:01,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-21 12:57:01,636 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 2328 transitions. [2021-12-21 12:57:01,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-21 12:57:01,641 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:57:01,641 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:57:01,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 12:57:01,641 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:57:01,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:57:01,642 INFO L85 PathProgramCache]: Analyzing trace with hash -141304047, now seen corresponding path program 1 times [2021-12-21 12:57:01,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:57:01,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391951051] [2021-12-21 12:57:01,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:57:01,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:57:01,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:01,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 12:57:01,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:01,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:57:01,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:01,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:57:01,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:01,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 12:57:01,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:01,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:57:01,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:01,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:57:01,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:01,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:57:01,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:01,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 12:57:01,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:01,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-21 12:57:01,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:01,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 12:57:01,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:01,988 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-21 12:57:01,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:57:01,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391951051] [2021-12-21 12:57:01,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391951051] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:57:01,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:57:01,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 12:57:01,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108822989] [2021-12-21 12:57:01,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:57:01,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 12:57:01,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:57:01,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 12:57:01,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-21 12:57:01,990 INFO L87 Difference]: Start difference. First operand 1397 states and 2328 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-21 12:57:05,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:57:05,866 INFO L93 Difference]: Finished difference Result 3289 states and 5669 transitions. [2021-12-21 12:57:05,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 12:57:05,867 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 99 [2021-12-21 12:57:05,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:57:05,880 INFO L225 Difference]: With dead ends: 3289 [2021-12-21 12:57:05,880 INFO L226 Difference]: Without dead ends: 1950 [2021-12-21 12:57:05,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-21 12:57:05,886 INFO L933 BasicCegarLoop]: 871 mSDtfsCounter, 989 mSDsluCounter, 1443 mSDsCounter, 0 mSdLazyCounter, 2476 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 2314 SdHoareTripleChecker+Invalid, 2784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 2476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-21 12:57:05,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1059 Valid, 2314 Invalid, 2784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 2476 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-21 12:57:05,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1950 states. [2021-12-21 12:57:06,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1950 to 1397. [2021-12-21 12:57:06,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1397 states, 1095 states have (on average 1.6292237442922375) internal successors, (1784), 1149 states have internal predecessors, (1784), 238 states have call successors, (238), 53 states have call predecessors, (238), 63 states have return successors, (301), 230 states have call predecessors, (301), 233 states have call successors, (301) [2021-12-21 12:57:06,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 2323 transitions. [2021-12-21 12:57:06,104 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 2323 transitions. Word has length 99 [2021-12-21 12:57:06,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:57:06,104 INFO L470 AbstractCegarLoop]: Abstraction has 1397 states and 2323 transitions. [2021-12-21 12:57:06,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-21 12:57:06,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 2323 transitions. [2021-12-21 12:57:06,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-21 12:57:06,109 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:57:06,109 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:57:06,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 12:57:06,109 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:57:06,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:57:06,110 INFO L85 PathProgramCache]: Analyzing trace with hash 99870936, now seen corresponding path program 1 times [2021-12-21 12:57:06,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:57:06,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892147693] [2021-12-21 12:57:06,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:57:06,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:57:06,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:06,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 12:57:06,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:06,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:57:06,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:06,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:57:06,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:06,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-21 12:57:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:06,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:57:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:06,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:57:06,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:06,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:57:06,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:06,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 12:57:06,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:06,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-21 12:57:06,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:06,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 12:57:06,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:57:06,478 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-21 12:57:06,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:57:06,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892147693] [2021-12-21 12:57:06,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892147693] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:57:06,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:57:06,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 12:57:06,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399369344] [2021-12-21 12:57:06,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:57:06,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 12:57:06,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:57:06,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 12:57:06,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-21 12:57:06,480 INFO L87 Difference]: Start difference. First operand 1397 states and 2323 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10)