./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec3_product24.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_spec3_product24.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 8333bf118d61dc3e3ddedc658c9d6fef28fa288c9b6abdc361c7a0f5f6e109b7 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 12:58:26,530 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 12:58:26,535 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 12:58:26,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 12:58:26,574 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 12:58:26,576 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 12:58:26,577 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 12:58:26,581 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 12:58:26,583 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 12:58:26,586 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 12:58:26,587 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 12:58:26,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 12:58:26,588 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 12:58:26,590 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 12:58:26,592 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 12:58:26,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 12:58:26,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 12:58:26,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 12:58:26,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 12:58:26,601 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 12:58:26,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 12:58:26,602 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 12:58:26,604 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 12:58:26,604 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 12:58:26,609 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 12:58:26,609 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 12:58:26,609 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 12:58:26,611 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 12:58:26,611 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 12:58:26,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 12:58:26,612 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 12:58:26,613 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 12:58:26,614 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 12:58:26,615 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 12:58:26,616 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 12:58:26,616 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 12:58:26,616 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 12:58:26,616 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 12:58:26,617 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 12:58:26,617 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 12:58:26,618 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 12:58:26,618 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 12:58:26,646 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 12:58:26,647 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 12:58:26,647 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 12:58:26,648 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 12:58:26,648 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 12:58:26,648 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 12:58:26,649 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 12:58:26,649 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 12:58:26,649 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 12:58:26,649 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 12:58:26,650 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 12:58:26,650 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 12:58:26,650 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 12:58:26,651 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 12:58:26,651 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 12:58:26,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 12:58:26,651 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 12:58:26,651 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 12:58:26,651 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 12:58:26,652 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 12:58:26,652 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 12:58:26,652 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 12:58:26,652 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 12:58:26,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 12:58:26,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:58:26,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 12:58:26,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 12:58:26,653 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 12:58:26,653 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 12:58:26,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 12:58:26,654 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 12:58:26,654 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 12:58:26,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 12:58:26,654 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 12:58:26,654 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8333bf118d61dc3e3ddedc658c9d6fef28fa288c9b6abdc361c7a0f5f6e109b7 [2021-12-21 12:58:26,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 12:58:26,880 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 12:58:26,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 12:58:26,883 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 12:58:26,884 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 12:58:26,885 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c [2021-12-21 12:58:26,931 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82b4531b8/94562d980c244cadbdda384f33f9eb7b/FLAG86b124e61 [2021-12-21 12:58:27,362 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 12:58:27,362 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c [2021-12-21 12:58:27,378 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82b4531b8/94562d980c244cadbdda384f33f9eb7b/FLAG86b124e61 [2021-12-21 12:58:27,679 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82b4531b8/94562d980c244cadbdda384f33f9eb7b [2021-12-21 12:58:27,682 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 12:58:27,683 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 12:58:27,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 12:58:27,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 12:58:27,686 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 12:58:27,686 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:58:27" (1/1) ... [2021-12-21 12:58:27,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f7c0d0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:58:27, skipping insertion in model container [2021-12-21 12:58:27,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:58:27" (1/1) ... [2021-12-21 12:58:27,692 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 12:58:27,750 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 12:58:28,144 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_spec3_product24.cil.c[75121,75134] [2021-12-21 12:58:28,149 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 12:58:28,158 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 12:58:28,238 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_spec3_product24.cil.c[75121,75134] [2021-12-21 12:58:28,238 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 12:58:28,270 INFO L208 MainTranslator]: Completed translation [2021-12-21 12:58:28,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:58:28 WrapperNode [2021-12-21 12:58:28,271 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 12:58:28,272 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 12:58:28,272 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 12:58:28,272 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 12:58:28,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:58:28" (1/1) ... [2021-12-21 12:58:28,313 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:58:28" (1/1) ... [2021-12-21 12:58:28,373 INFO L137 Inliner]: procedures = 96, calls = 359, calls flagged for inlining = 27, calls inlined = 23, statements flattened = 966 [2021-12-21 12:58:28,375 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 12:58:28,375 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 12:58:28,375 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 12:58:28,376 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 12:58:28,381 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:58:28" (1/1) ... [2021-12-21 12:58:28,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:58:28" (1/1) ... [2021-12-21 12:58:28,392 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:58:28" (1/1) ... [2021-12-21 12:58:28,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:58:28" (1/1) ... [2021-12-21 12:58:28,410 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:58:28" (1/1) ... [2021-12-21 12:58:28,434 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:58:28" (1/1) ... [2021-12-21 12:58:28,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:58:28" (1/1) ... [2021-12-21 12:58:28,443 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 12:58:28,446 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 12:58:28,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 12:58:28,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 12:58:28,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:58:28" (1/1) ... [2021-12-21 12:58:28,463 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:58:28,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:58:28,513 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 12:58:28,535 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 12:58:28,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 12:58:28,553 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2021-12-21 12:58:28,554 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2021-12-21 12:58:28,554 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2021-12-21 12:58:28,554 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2021-12-21 12:58:28,554 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2021-12-21 12:58:28,554 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2021-12-21 12:58:28,554 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2021-12-21 12:58:28,554 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2021-12-21 12:58:28,555 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2021-12-21 12:58:28,555 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2021-12-21 12:58:28,555 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2021-12-21 12:58:28,555 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2021-12-21 12:58:28,555 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2021-12-21 12:58:28,555 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2021-12-21 12:58:28,556 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2021-12-21 12:58:28,556 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2021-12-21 12:58:28,556 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-12-21 12:58:28,556 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-12-21 12:58:28,556 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-12-21 12:58:28,556 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-12-21 12:58:28,556 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-12-21 12:58:28,557 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-12-21 12:58:28,557 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2021-12-21 12:58:28,557 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2021-12-21 12:58:28,557 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2021-12-21 12:58:28,557 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2021-12-21 12:58:28,557 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2021-12-21 12:58:28,557 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2021-12-21 12:58:28,558 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2021-12-21 12:58:28,558 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2021-12-21 12:58:28,558 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2021-12-21 12:58:28,558 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2021-12-21 12:58:28,558 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2021-12-21 12:58:28,559 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2021-12-21 12:58:28,559 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2021-12-21 12:58:28,559 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2021-12-21 12:58:28,559 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2021-12-21 12:58:28,559 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2021-12-21 12:58:28,559 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2021-12-21 12:58:28,559 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2021-12-21 12:58:28,560 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2021-12-21 12:58:28,560 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2021-12-21 12:58:28,560 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2021-12-21 12:58:28,560 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2021-12-21 12:58:28,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 12:58:28,561 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2021-12-21 12:58:28,561 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2021-12-21 12:58:28,561 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2021-12-21 12:58:28,561 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2021-12-21 12:58:28,561 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2021-12-21 12:58:28,561 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2021-12-21 12:58:28,562 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2021-12-21 12:58:28,562 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2021-12-21 12:58:28,563 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2021-12-21 12:58:28,563 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2021-12-21 12:58:28,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 12:58:28,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 12:58:28,564 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2021-12-21 12:58:28,564 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2021-12-21 12:58:28,565 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2021-12-21 12:58:28,565 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2021-12-21 12:58:28,747 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 12:58:28,748 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 12:58:29,536 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 12:58:29,552 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 12:58:29,553 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 12:58:29,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:58:29 BoogieIcfgContainer [2021-12-21 12:58:29,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 12:58:29,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 12:58:29,558 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 12:58:29,561 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 12:58:29,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 12:58:27" (1/3) ... [2021-12-21 12:58:29,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e5bef84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:58:29, skipping insertion in model container [2021-12-21 12:58:29,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:58:28" (2/3) ... [2021-12-21 12:58:29,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e5bef84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:58:29, skipping insertion in model container [2021-12-21 12:58:29,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:58:29" (3/3) ... [2021-12-21 12:58:29,564 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product24.cil.c [2021-12-21 12:58:29,572 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 12:58:29,572 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 12:58:29,628 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 12:58:29,636 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 12:58:29,636 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 12:58:29,680 INFO L276 IsEmpty]: Start isEmpty. Operand has 620 states, 474 states have (on average 1.6582278481012658) internal successors, (786), 494 states have internal predecessors, (786), 115 states have call successors, (115), 29 states have call predecessors, (115), 29 states have return successors, (115), 111 states have call predecessors, (115), 115 states have call successors, (115) [2021-12-21 12:58:29,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-21 12:58:29,699 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:58:29,700 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-21 12:58:29,701 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:58:29,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:58:29,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1970042656, now seen corresponding path program 1 times [2021-12-21 12:58:29,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:58:29,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618488657] [2021-12-21 12:58:29,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:58:29,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:58:29,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:30,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:58:30,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:30,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:58:30,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:30,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 12:58:30,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:30,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:58:30,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:30,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:58:30,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:30,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-21 12:58:30,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:30,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 12:58:30,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:30,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 12:58:30,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:30,423 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 12:58:30,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:58:30,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618488657] [2021-12-21 12:58:30,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618488657] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:58:30,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:58:30,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 12:58:30,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706942176] [2021-12-21 12:58:30,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:58:30,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 12:58:30,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:58:30,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 12:58:30,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-21 12:58:30,456 INFO L87 Difference]: Start difference. First operand has 620 states, 474 states have (on average 1.6582278481012658) internal successors, (786), 494 states have internal predecessors, (786), 115 states have call successors, (115), 29 states have call predecessors, (115), 29 states have return successors, (115), 111 states have call predecessors, (115), 115 states have call successors, (115) Second operand has 9 states, 8 states have (on average 5.875) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-21 12:58:36,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:58:36,034 INFO L93 Difference]: Finished difference Result 1512 states and 2577 transitions. [2021-12-21 12:58:36,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 12:58:36,036 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 67 [2021-12-21 12:58:36,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:58:36,055 INFO L225 Difference]: With dead ends: 1512 [2021-12-21 12:58:36,055 INFO L226 Difference]: Without dead ends: 896 [2021-12-21 12:58:36,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-12-21 12:58:36,068 INFO L933 BasicCegarLoop]: 900 mSDtfsCounter, 936 mSDsluCounter, 2491 mSDsCounter, 0 mSdLazyCounter, 4811 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 3391 SdHoareTripleChecker+Invalid, 5048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 4811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-12-21 12:58:36,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1052 Valid, 3391 Invalid, 5048 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [237 Valid, 4811 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-12-21 12:58:36,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2021-12-21 12:58:36,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 623. [2021-12-21 12:58:36,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 477 states have (on average 1.649895178197065) internal successors, (787), 497 states have internal predecessors, (787), 116 states have call successors, (116), 29 states have call predecessors, (116), 29 states have return successors, (115), 110 states have call predecessors, (115), 113 states have call successors, (115) [2021-12-21 12:58:36,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 1018 transitions. [2021-12-21 12:58:36,186 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 1018 transitions. Word has length 67 [2021-12-21 12:58:36,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:58:36,187 INFO L470 AbstractCegarLoop]: Abstraction has 623 states and 1018 transitions. [2021-12-21 12:58:36,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-21 12:58:36,187 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 1018 transitions. [2021-12-21 12:58:36,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-21 12:58:36,190 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:58:36,190 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-21 12:58:36,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 12:58:36,191 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:58:36,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:58:36,191 INFO L85 PathProgramCache]: Analyzing trace with hash -935502562, now seen corresponding path program 1 times [2021-12-21 12:58:36,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:58:36,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799126836] [2021-12-21 12:58:36,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:58:36,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:58:36,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:36,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:58:36,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:36,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:58:36,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:36,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 12:58:36,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:36,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:58:36,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:36,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 12:58:36,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:36,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 12:58:36,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:36,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-21 12:58:36,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:36,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-21 12:58:36,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:36,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 12:58:36,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:58:36,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799126836] [2021-12-21 12:58:36,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799126836] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:58:36,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:58:36,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 12:58:36,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260118296] [2021-12-21 12:58:36,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:58:36,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 12:58:36,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:58:36,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 12:58:36,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-21 12:58:36,504 INFO L87 Difference]: Start difference. First operand 623 states and 1018 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 12:58:40,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:58:40,359 INFO L93 Difference]: Finished difference Result 1497 states and 2524 transitions. [2021-12-21 12:58:40,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 12:58:40,360 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2021-12-21 12:58:40,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:58:40,365 INFO L225 Difference]: With dead ends: 1497 [2021-12-21 12:58:40,365 INFO L226 Difference]: Without dead ends: 859 [2021-12-21 12:58:40,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 12:58:40,368 INFO L933 BasicCegarLoop]: 880 mSDtfsCounter, 1477 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 2244 mSolverCounterSat, 481 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1592 SdHoareTripleChecker+Valid, 1948 SdHoareTripleChecker+Invalid, 2725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 481 IncrementalHoareTripleChecker+Valid, 2244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-21 12:58:40,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1592 Valid, 1948 Invalid, 2725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [481 Valid, 2244 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-12-21 12:58:40,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2021-12-21 12:58:40,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 599. [2021-12-21 12:58:40,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 456 states have (on average 1.6403508771929824) internal successors, (748), 474 states have internal predecessors, (748), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2021-12-21 12:58:40,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 975 transitions. [2021-12-21 12:58:40,414 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 975 transitions. Word has length 68 [2021-12-21 12:58:40,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:58:40,415 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 975 transitions. [2021-12-21 12:58:40,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 12:58:40,416 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 975 transitions. [2021-12-21 12:58:40,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-21 12:58:40,417 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:58:40,418 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-21 12:58:40,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 12:58:40,418 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:58:40,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:58:40,419 INFO L85 PathProgramCache]: Analyzing trace with hash 262212232, now seen corresponding path program 1 times [2021-12-21 12:58:40,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:58:40,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30910794] [2021-12-21 12:58:40,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:58:40,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:58:40,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:40,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:58:40,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:40,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:58:40,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:40,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 12:58:40,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:40,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:58:40,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:40,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:58:40,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:40,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 12:58:40,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:40,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-21 12:58:40,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:40,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-21 12:58:40,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:40,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 12:58:40,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:58:40,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30910794] [2021-12-21 12:58:40,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30910794] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:58:40,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:58:40,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 12:58:40,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593591237] [2021-12-21 12:58:40,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:58:40,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 12:58:40,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:58:40,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 12:58:40,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-21 12:58:40,719 INFO L87 Difference]: Start difference. First operand 599 states and 975 transitions. Second operand has 9 states, 8 states have (on average 6.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-21 12:58:45,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:58:45,478 INFO L93 Difference]: Finished difference Result 1442 states and 2430 transitions. [2021-12-21 12:58:45,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 12:58:45,479 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 68 [2021-12-21 12:58:45,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:58:45,484 INFO L225 Difference]: With dead ends: 1442 [2021-12-21 12:58:45,484 INFO L226 Difference]: Without dead ends: 859 [2021-12-21 12:58:45,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-12-21 12:58:45,492 INFO L933 BasicCegarLoop]: 844 mSDtfsCounter, 1489 mSDsluCounter, 2366 mSDsCounter, 0 mSdLazyCounter, 4482 mSolverCounterSat, 475 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1604 SdHoareTripleChecker+Valid, 3210 SdHoareTripleChecker+Invalid, 4957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 475 IncrementalHoareTripleChecker+Valid, 4482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-12-21 12:58:45,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1604 Valid, 3210 Invalid, 4957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [475 Valid, 4482 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-12-21 12:58:45,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2021-12-21 12:58:45,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 599. [2021-12-21 12:58:45,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 456 states have (on average 1.638157894736842) internal successors, (747), 474 states have internal predecessors, (747), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2021-12-21 12:58:45,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 974 transitions. [2021-12-21 12:58:45,539 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 974 transitions. Word has length 68 [2021-12-21 12:58:45,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:58:45,540 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 974 transitions. [2021-12-21 12:58:45,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-21 12:58:45,541 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 974 transitions. [2021-12-21 12:58:45,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-21 12:58:45,542 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:58:45,542 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-21 12:58:45,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 12:58:45,543 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:58:45,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:58:45,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1028271764, now seen corresponding path program 1 times [2021-12-21 12:58:45,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:58:45,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596770545] [2021-12-21 12:58:45,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:58:45,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:58:45,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:45,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:58:45,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:45,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:58:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:45,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 12:58:45,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:45,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:58:45,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:45,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:58:45,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:45,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 12:58:45,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:45,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-21 12:58:45,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:45,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 12:58:45,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:45,826 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 12:58:45,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:58:45,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596770545] [2021-12-21 12:58:45,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596770545] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:58:45,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:58:45,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 12:58:45,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060155460] [2021-12-21 12:58:45,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:58:45,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 12:58:45,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:58:45,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 12:58:45,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-21 12:58:45,829 INFO L87 Difference]: Start difference. First operand 599 states and 974 transitions. Second operand has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-21 12:58:50,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:58:50,371 INFO L93 Difference]: Finished difference Result 1460 states and 2452 transitions. [2021-12-21 12:58:50,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 12:58:50,371 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 69 [2021-12-21 12:58:50,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:58:50,376 INFO L225 Difference]: With dead ends: 1460 [2021-12-21 12:58:50,376 INFO L226 Difference]: Without dead ends: 853 [2021-12-21 12:58:50,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-12-21 12:58:50,379 INFO L933 BasicCegarLoop]: 869 mSDtfsCounter, 1511 mSDsluCounter, 2382 mSDsCounter, 0 mSdLazyCounter, 4491 mSolverCounterSat, 477 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1626 SdHoareTripleChecker+Valid, 3251 SdHoareTripleChecker+Invalid, 4968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 477 IncrementalHoareTripleChecker+Valid, 4491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-21 12:58:50,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1626 Valid, 3251 Invalid, 4968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [477 Valid, 4491 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-12-21 12:58:50,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2021-12-21 12:58:50,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 593. [2021-12-21 12:58:50,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 450 states have (on average 1.6311111111111112) internal successors, (734), 468 states have internal predecessors, (734), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2021-12-21 12:58:50,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 961 transitions. [2021-12-21 12:58:50,416 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 961 transitions. Word has length 69 [2021-12-21 12:58:50,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:58:50,416 INFO L470 AbstractCegarLoop]: Abstraction has 593 states and 961 transitions. [2021-12-21 12:58:50,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-21 12:58:50,417 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 961 transitions. [2021-12-21 12:58:50,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-21 12:58:50,417 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:58:50,418 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-21 12:58:50,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 12:58:50,418 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:58:50,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:58:50,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1404132560, now seen corresponding path program 1 times [2021-12-21 12:58:50,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:58:50,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678902041] [2021-12-21 12:58:50,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:58:50,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:58:50,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:50,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:58:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:50,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:58:50,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:50,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 12:58:50,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:50,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:58:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:50,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:58:50,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:50,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 12:58:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:50,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 12:58:50,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:50,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 12:58:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:50,706 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 12:58:50,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:58:50,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678902041] [2021-12-21 12:58:50,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678902041] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:58:50,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:58:50,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 12:58:50,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365246351] [2021-12-21 12:58:50,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:58:50,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 12:58:50,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:58:50,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 12:58:50,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-21 12:58:50,710 INFO L87 Difference]: Start difference. First operand 593 states and 961 transitions. Second operand has 9 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-21 12:58:55,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:58:55,550 INFO L93 Difference]: Finished difference Result 1430 states and 2401 transitions. [2021-12-21 12:58:55,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 12:58:55,551 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 70 [2021-12-21 12:58:55,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:58:55,556 INFO L225 Difference]: With dead ends: 1430 [2021-12-21 12:58:55,556 INFO L226 Difference]: Without dead ends: 853 [2021-12-21 12:58:55,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-12-21 12:58:55,559 INFO L933 BasicCegarLoop]: 832 mSDtfsCounter, 844 mSDsluCounter, 2388 mSDsCounter, 0 mSdLazyCounter, 4578 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 3220 SdHoareTripleChecker+Invalid, 4812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 4578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-12-21 12:58:55,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [959 Valid, 3220 Invalid, 4812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 4578 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-12-21 12:58:55,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2021-12-21 12:58:55,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 593. [2021-12-21 12:58:55,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 450 states have (on average 1.6288888888888888) internal successors, (733), 468 states have internal predecessors, (733), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2021-12-21 12:58:55,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 960 transitions. [2021-12-21 12:58:55,600 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 960 transitions. Word has length 70 [2021-12-21 12:58:55,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:58:55,601 INFO L470 AbstractCegarLoop]: Abstraction has 593 states and 960 transitions. [2021-12-21 12:58:55,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-21 12:58:55,601 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 960 transitions. [2021-12-21 12:58:55,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-21 12:58:55,602 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:58:55,602 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-21 12:58:55,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 12:58:55,602 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:58:55,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:58:55,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1463803383, now seen corresponding path program 1 times [2021-12-21 12:58:55,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:58:55,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969879949] [2021-12-21 12:58:55,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:58:55,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:58:55,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:55,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:58:55,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:55,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:58:55,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:55,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 12:58:55,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:55,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:58:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:55,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:58:55,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:55,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 12:58:55,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:55,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-21 12:58:55,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:55,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 12:58:55,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:58:55,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 12:58:55,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:58:55,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969879949] [2021-12-21 12:58:55,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969879949] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:58:55,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:58:55,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 12:58:55,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131217294] [2021-12-21 12:58:55,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:58:55,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 12:58:55,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:58:55,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 12:58:55,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-21 12:58:55,872 INFO L87 Difference]: Start difference. First operand 593 states and 960 transitions. Second operand has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-21 12:59:00,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:59:00,831 INFO L93 Difference]: Finished difference Result 1448 states and 2421 transitions. [2021-12-21 12:59:00,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 12:59:00,832 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 71 [2021-12-21 12:59:00,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:59:00,835 INFO L225 Difference]: With dead ends: 1448 [2021-12-21 12:59:00,835 INFO L226 Difference]: Without dead ends: 847 [2021-12-21 12:59:00,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-12-21 12:59:00,838 INFO L933 BasicCegarLoop]: 847 mSDtfsCounter, 1485 mSDsluCounter, 2344 mSDsCounter, 0 mSdLazyCounter, 4422 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1600 SdHoareTripleChecker+Valid, 3191 SdHoareTripleChecker+Invalid, 4901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 4422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-12-21 12:59:00,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1600 Valid, 3191 Invalid, 4901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 4422 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-12-21 12:59:00,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2021-12-21 12:59:00,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 587. [2021-12-21 12:59:00,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 444 states have (on average 1.6216216216216217) internal successors, (720), 462 states have internal predecessors, (720), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2021-12-21 12:59:00,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 947 transitions. [2021-12-21 12:59:00,875 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 947 transitions. Word has length 71 [2021-12-21 12:59:00,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:59:00,875 INFO L470 AbstractCegarLoop]: Abstraction has 587 states and 947 transitions. [2021-12-21 12:59:00,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-21 12:59:00,876 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 947 transitions. [2021-12-21 12:59:00,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-21 12:59:00,876 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:59:00,877 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-21 12:59:00,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 12:59:00,877 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:59:00,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:59:00,877 INFO L85 PathProgramCache]: Analyzing trace with hash -861985295, now seen corresponding path program 1 times [2021-12-21 12:59:00,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:59:00,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573734033] [2021-12-21 12:59:00,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:59:00,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:59:00,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:01,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:59:01,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:01,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:59:01,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:01,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 12:59:01,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:01,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:59:01,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:01,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:59:01,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:01,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 12:59:01,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:01,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 12:59:01,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:01,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-21 12:59:01,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:01,154 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 12:59:01,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:59:01,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573734033] [2021-12-21 12:59:01,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573734033] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:59:01,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:59:01,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 12:59:01,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774579166] [2021-12-21 12:59:01,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:59:01,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 12:59:01,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:59:01,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 12:59:01,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-21 12:59:01,156 INFO L87 Difference]: Start difference. First operand 587 states and 947 transitions. Second operand has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-21 12:59:05,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:59:05,782 INFO L93 Difference]: Finished difference Result 1418 states and 2372 transitions. [2021-12-21 12:59:05,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 12:59:05,783 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 72 [2021-12-21 12:59:05,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:59:05,787 INFO L225 Difference]: With dead ends: 1418 [2021-12-21 12:59:05,788 INFO L226 Difference]: Without dead ends: 847 [2021-12-21 12:59:05,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-12-21 12:59:05,790 INFO L933 BasicCegarLoop]: 813 mSDtfsCounter, 820 mSDsluCounter, 2357 mSDsCounter, 0 mSdLazyCounter, 4490 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 3170 SdHoareTripleChecker+Invalid, 4725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 4490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:59:05,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [935 Valid, 3170 Invalid, 4725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 4490 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-12-21 12:59:05,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2021-12-21 12:59:05,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 587. [2021-12-21 12:59:05,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 444 states have (on average 1.6193693693693694) internal successors, (719), 462 states have internal predecessors, (719), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2021-12-21 12:59:05,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 946 transitions. [2021-12-21 12:59:05,836 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 946 transitions. Word has length 72 [2021-12-21 12:59:05,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:59:05,836 INFO L470 AbstractCegarLoop]: Abstraction has 587 states and 946 transitions. [2021-12-21 12:59:05,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-21 12:59:05,837 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 946 transitions. [2021-12-21 12:59:05,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-21 12:59:05,842 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:59:05,842 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-21 12:59:05,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 12:59:05,843 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:59:05,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:59:05,843 INFO L85 PathProgramCache]: Analyzing trace with hash 2139409325, now seen corresponding path program 1 times [2021-12-21 12:59:05,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:59:05,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054522222] [2021-12-21 12:59:05,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:59:05,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:59:05,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:05,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:59:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:06,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:59:06,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:06,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 12:59:06,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:06,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:59:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:06,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:59:06,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:06,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-21 12:59:06,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:06,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 12:59:06,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:06,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 12:59:06,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:06,089 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 12:59:06,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:59:06,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054522222] [2021-12-21 12:59:06,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054522222] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:59:06,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:59:06,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 12:59:06,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455992697] [2021-12-21 12:59:06,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:59:06,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 12:59:06,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:59:06,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 12:59:06,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-21 12:59:06,091 INFO L87 Difference]: Start difference. First operand 587 states and 946 transitions. Second operand has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-21 12:59:10,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:59:10,692 INFO L93 Difference]: Finished difference Result 1436 states and 2390 transitions. [2021-12-21 12:59:10,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 12:59:10,693 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 73 [2021-12-21 12:59:10,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:59:10,697 INFO L225 Difference]: With dead ends: 1436 [2021-12-21 12:59:10,697 INFO L226 Difference]: Without dead ends: 841 [2021-12-21 12:59:10,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-12-21 12:59:10,699 INFO L933 BasicCegarLoop]: 839 mSDtfsCounter, 1455 mSDsluCounter, 2367 mSDsCounter, 0 mSdLazyCounter, 4352 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1570 SdHoareTripleChecker+Valid, 3206 SdHoareTripleChecker+Invalid, 4831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 4352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-21 12:59:10,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1570 Valid, 3206 Invalid, 4831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 4352 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-12-21 12:59:10,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2021-12-21 12:59:10,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 581. [2021-12-21 12:59:10,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 438 states have (on average 1.6118721461187215) internal successors, (706), 456 states have internal predecessors, (706), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2021-12-21 12:59:10,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 933 transitions. [2021-12-21 12:59:10,741 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 933 transitions. Word has length 73 [2021-12-21 12:59:10,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:59:10,743 INFO L470 AbstractCegarLoop]: Abstraction has 581 states and 933 transitions. [2021-12-21 12:59:10,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-21 12:59:10,743 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 933 transitions. [2021-12-21 12:59:10,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-21 12:59:10,744 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:59:10,744 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-21 12:59:10,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 12:59:10,745 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:59:10,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:59:10,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1355740980, now seen corresponding path program 1 times [2021-12-21 12:59:10,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:59:10,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269342083] [2021-12-21 12:59:10,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:59:10,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:59:10,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:10,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:59:10,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:10,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:59:10,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:10,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 12:59:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:10,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:59:10,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:10,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:59:10,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:11,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-21 12:59:11,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:11,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 12:59:11,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:11,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 12:59:11,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:11,030 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 12:59:11,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:59:11,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269342083] [2021-12-21 12:59:11,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269342083] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:59:11,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:59:11,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 12:59:11,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931029669] [2021-12-21 12:59:11,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:59:11,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 12:59:11,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:59:11,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 12:59:11,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-21 12:59:11,032 INFO L87 Difference]: Start difference. First operand 581 states and 933 transitions. Second operand has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-21 12:59:15,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:59:15,626 INFO L93 Difference]: Finished difference Result 1406 states and 2343 transitions. [2021-12-21 12:59:15,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 12:59:15,626 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 73 [2021-12-21 12:59:15,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:59:15,630 INFO L225 Difference]: With dead ends: 1406 [2021-12-21 12:59:15,630 INFO L226 Difference]: Without dead ends: 841 [2021-12-21 12:59:15,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-12-21 12:59:15,632 INFO L933 BasicCegarLoop]: 809 mSDtfsCounter, 805 mSDsluCounter, 2384 mSDsCounter, 0 mSdLazyCounter, 4398 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 3193 SdHoareTripleChecker+Invalid, 4634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 4398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-21 12:59:15,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [920 Valid, 3193 Invalid, 4634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 4398 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-12-21 12:59:15,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2021-12-21 12:59:15,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 581. [2021-12-21 12:59:15,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 438 states have (on average 1.6095890410958904) internal successors, (705), 456 states have internal predecessors, (705), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2021-12-21 12:59:15,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 932 transitions. [2021-12-21 12:59:15,671 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 932 transitions. Word has length 73 [2021-12-21 12:59:15,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:59:15,671 INFO L470 AbstractCegarLoop]: Abstraction has 581 states and 932 transitions. [2021-12-21 12:59:15,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-21 12:59:15,672 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 932 transitions. [2021-12-21 12:59:15,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-21 12:59:15,672 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:59:15,672 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-21 12:59:15,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 12:59:15,673 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:59:15,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:59:15,673 INFO L85 PathProgramCache]: Analyzing trace with hash -600565641, now seen corresponding path program 1 times [2021-12-21 12:59:15,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:59:15,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408202576] [2021-12-21 12:59:15,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:59:15,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:59:15,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:15,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:59:15,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:15,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:59:15,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:15,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 12:59:15,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:15,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:59:15,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:15,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:59:15,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:15,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-21 12:59:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:15,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 12:59:15,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:15,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 12:59:15,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:15,931 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 12:59:15,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:59:15,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408202576] [2021-12-21 12:59:15,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408202576] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:59:15,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:59:15,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 12:59:15,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631185830] [2021-12-21 12:59:15,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:59:15,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 12:59:15,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:59:15,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 12:59:15,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-21 12:59:15,932 INFO L87 Difference]: Start difference. First operand 581 states and 932 transitions. Second operand has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-21 12:59:20,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:59:20,698 INFO L93 Difference]: Finished difference Result 1418 states and 2353 transitions. [2021-12-21 12:59:20,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 12:59:20,699 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 74 [2021-12-21 12:59:20,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:59:20,713 INFO L225 Difference]: With dead ends: 1418 [2021-12-21 12:59:20,713 INFO L226 Difference]: Without dead ends: 853 [2021-12-21 12:59:20,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-12-21 12:59:20,715 INFO L933 BasicCegarLoop]: 810 mSDtfsCounter, 792 mSDsluCounter, 2409 mSDsCounter, 0 mSdLazyCounter, 4416 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 3219 SdHoareTripleChecker+Invalid, 4651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 4416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:59:20,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [907 Valid, 3219 Invalid, 4651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 4416 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-12-21 12:59:20,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2021-12-21 12:59:20,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 587. [2021-12-21 12:59:20,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 444 states have (on average 1.6013513513513513) internal successors, (711), 462 states have internal predecessors, (711), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2021-12-21 12:59:20,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 938 transitions. [2021-12-21 12:59:20,771 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 938 transitions. Word has length 74 [2021-12-21 12:59:20,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:59:20,771 INFO L470 AbstractCegarLoop]: Abstraction has 587 states and 938 transitions. [2021-12-21 12:59:20,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-21 12:59:20,771 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 938 transitions. [2021-12-21 12:59:20,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-21 12:59:20,773 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:59:20,773 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-21 12:59:20,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 12:59:20,773 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:59:20,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:59:20,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1849034489, now seen corresponding path program 1 times [2021-12-21 12:59:20,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:59:20,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145998009] [2021-12-21 12:59:20,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:59:20,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:59:20,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:20,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:59:20,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:20,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:59:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:20,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 12:59:20,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:20,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:59:20,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:20,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:59:20,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:21,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-21 12:59:21,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:21,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 12:59:21,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:21,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 12:59:21,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:21,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 12:59:21,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:59:21,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145998009] [2021-12-21 12:59:21,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145998009] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:59:21,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:59:21,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 12:59:21,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200763443] [2021-12-21 12:59:21,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:59:21,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 12:59:21,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:59:21,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 12:59:21,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-21 12:59:21,019 INFO L87 Difference]: Start difference. First operand 587 states and 938 transitions. Second operand has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-21 12:59:25,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:59:25,271 INFO L93 Difference]: Finished difference Result 1421 states and 2354 transitions. [2021-12-21 12:59:25,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 12:59:25,271 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 74 [2021-12-21 12:59:25,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:59:25,275 INFO L225 Difference]: With dead ends: 1421 [2021-12-21 12:59:25,275 INFO L226 Difference]: Without dead ends: 841 [2021-12-21 12:59:25,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-12-21 12:59:25,277 INFO L933 BasicCegarLoop]: 802 mSDtfsCounter, 1423 mSDsluCounter, 2324 mSDsCounter, 0 mSdLazyCounter, 4252 mSolverCounterSat, 475 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 3126 SdHoareTripleChecker+Invalid, 4727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 475 IncrementalHoareTripleChecker+Valid, 4252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-12-21 12:59:25,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1538 Valid, 3126 Invalid, 4727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [475 Valid, 4252 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-12-21 12:59:25,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2021-12-21 12:59:25,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 581. [2021-12-21 12:59:25,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 438 states have (on average 1.6073059360730593) internal successors, (704), 456 states have internal predecessors, (704), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2021-12-21 12:59:25,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 931 transitions. [2021-12-21 12:59:25,318 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 931 transitions. Word has length 74 [2021-12-21 12:59:25,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:59:25,318 INFO L470 AbstractCegarLoop]: Abstraction has 581 states and 931 transitions. [2021-12-21 12:59:25,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-21 12:59:25,318 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 931 transitions. [2021-12-21 12:59:25,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-21 12:59:25,319 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:59:25,320 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-21 12:59:25,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-21 12:59:25,320 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:59:25,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:59:25,320 INFO L85 PathProgramCache]: Analyzing trace with hash 846962418, now seen corresponding path program 1 times [2021-12-21 12:59:25,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:59:25,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107472155] [2021-12-21 12:59:25,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:59:25,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:59:25,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:25,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:59:25,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:25,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:59:25,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:25,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 12:59:25,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:25,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:59:25,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:25,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:59:25,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:25,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 12:59:25,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:25,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 12:59:25,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:25,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 12:59:25,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:59:25,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 12:59:25,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:59:25,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107472155] [2021-12-21 12:59:25,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107472155] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:59:25,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:59:25,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 12:59:25,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845291701] [2021-12-21 12:59:25,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:59:25,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 12:59:25,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:59:25,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 12:59:25,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-21 12:59:25,587 INFO L87 Difference]: Start difference. First operand 581 states and 931 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8)