./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec2_product30.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec2_product30.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 b3416b3e017f399176a4f7a837e050107ced7390b025fd07360efb8b6075a94d --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 04:31:19,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 04:31:19,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 04:31:19,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 04:31:19,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 04:31:19,502 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 04:31:19,503 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 04:31:19,504 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 04:31:19,506 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 04:31:19,506 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 04:31:19,507 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 04:31:19,508 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 04:31:19,508 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 04:31:19,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 04:31:19,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 04:31:19,510 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 04:31:19,511 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 04:31:19,511 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 04:31:19,512 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 04:31:19,514 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 04:31:19,515 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 04:31:19,515 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 04:31:19,516 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 04:31:19,517 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 04:31:19,517 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 04:31:19,519 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 04:31:19,523 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 04:31:19,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 04:31:19,524 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 04:31:19,524 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 04:31:19,525 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 04:31:19,525 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 04:31:19,527 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 04:31:19,528 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 04:31:19,528 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 04:31:19,530 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 04:31:19,531 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 04:31:19,532 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 04:31:19,532 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 04:31:19,532 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 04:31:19,533 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 04:31:19,535 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 04:31:19,536 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 04:31:19,561 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 04:31:19,562 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 04:31:19,562 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 04:31:19,562 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 04:31:19,563 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 04:31:19,563 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 04:31:19,564 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 04:31:19,564 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 04:31:19,564 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 04:31:19,565 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 04:31:19,565 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 04:31:19,565 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 04:31:19,565 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 04:31:19,565 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 04:31:19,565 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 04:31:19,565 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 04:31:19,573 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 04:31:19,573 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 04:31:19,573 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 04:31:19,573 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 04:31:19,573 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 04:31:19,573 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 04:31:19,573 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 04:31:19,573 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 04:31:19,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 04:31:19,573 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 04:31:19,574 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 04:31:19,574 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 04:31:19,574 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 04:31:19,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 04:31:19,579 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 04:31:19,579 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 04:31:19,579 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 04:31:19,579 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3416b3e017f399176a4f7a837e050107ced7390b025fd07360efb8b6075a94d [2022-07-21 04:31:19,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 04:31:19,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 04:31:19,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 04:31:19,848 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 04:31:19,849 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 04:31:19,850 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec2_product30.cil.c [2022-07-21 04:31:19,905 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9412a92f/36639586cdf8410590be71453fa1805f/FLAGe317c6145 [2022-07-21 04:31:20,373 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 04:31:20,374 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product30.cil.c [2022-07-21 04:31:20,400 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9412a92f/36639586cdf8410590be71453fa1805f/FLAGe317c6145 [2022-07-21 04:31:20,416 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9412a92f/36639586cdf8410590be71453fa1805f [2022-07-21 04:31:20,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 04:31:20,419 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 04:31:20,420 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 04:31:20,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 04:31:20,423 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 04:31:20,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:31:20" (1/1) ... [2022-07-21 04:31:20,424 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59f1bed5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:31:20, skipping insertion in model container [2022-07-21 04:31:20,424 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:31:20" (1/1) ... [2022-07-21 04:31:20,429 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 04:31:20,489 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 04:31:20,714 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product30.cil.c[10611,10624] [2022-07-21 04:31:20,883 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 04:31:20,889 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 04:31:20,907 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product30.cil.c[10611,10624] [2022-07-21 04:31:20,948 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 04:31:20,966 INFO L208 MainTranslator]: Completed translation [2022-07-21 04:31:20,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:31:20 WrapperNode [2022-07-21 04:31:20,966 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 04:31:20,967 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 04:31:20,967 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 04:31:20,967 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 04:31:20,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:31:20" (1/1) ... [2022-07-21 04:31:20,998 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:31:20" (1/1) ... [2022-07-21 04:31:21,030 INFO L137 Inliner]: procedures = 95, calls = 347, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 920 [2022-07-21 04:31:21,035 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 04:31:21,035 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 04:31:21,036 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 04:31:21,036 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 04:31:21,048 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:31:20" (1/1) ... [2022-07-21 04:31:21,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:31:20" (1/1) ... [2022-07-21 04:31:21,052 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:31:20" (1/1) ... [2022-07-21 04:31:21,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:31:20" (1/1) ... [2022-07-21 04:31:21,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:31:20" (1/1) ... [2022-07-21 04:31:21,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:31:20" (1/1) ... [2022-07-21 04:31:21,094 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:31:20" (1/1) ... [2022-07-21 04:31:21,100 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 04:31:21,100 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 04:31:21,101 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 04:31:21,101 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 04:31:21,101 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:31:20" (1/1) ... [2022-07-21 04:31:21,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 04:31:21,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:31:21,154 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) [2022-07-21 04:31:21,159 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 [2022-07-21 04:31:21,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 04:31:21,183 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-07-21 04:31:21,183 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-07-21 04:31:21,183 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-07-21 04:31:21,183 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-07-21 04:31:21,184 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-21 04:31:21,184 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-21 04:31:21,184 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-21 04:31:21,184 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-21 04:31:21,184 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-21 04:31:21,184 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-21 04:31:21,184 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2022-07-21 04:31:21,184 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2022-07-21 04:31:21,185 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-21 04:31:21,185 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-21 04:31:21,185 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-21 04:31:21,185 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-21 04:31:21,185 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-07-21 04:31:21,185 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-07-21 04:31:21,185 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-07-21 04:31:21,185 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-07-21 04:31:21,186 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-21 04:31:21,186 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-21 04:31:21,186 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-21 04:31:21,186 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-21 04:31:21,186 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-21 04:31:21,186 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-21 04:31:21,186 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-07-21 04:31:21,186 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-07-21 04:31:21,186 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-21 04:31:21,187 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-21 04:31:21,187 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-21 04:31:21,187 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-21 04:31:21,187 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-21 04:31:21,187 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-21 04:31:21,187 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-21 04:31:21,187 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-21 04:31:21,187 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-21 04:31:21,188 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-21 04:31:21,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 04:31:21,188 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-07-21 04:31:21,188 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-07-21 04:31:21,188 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-21 04:31:21,188 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-21 04:31:21,188 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-21 04:31:21,188 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-21 04:31:21,189 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-21 04:31:21,189 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-21 04:31:21,189 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2022-07-21 04:31:21,189 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2022-07-21 04:31:21,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 04:31:21,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 04:31:21,189 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-21 04:31:21,189 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-21 04:31:21,348 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 04:31:21,355 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 04:31:22,144 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 04:31:22,152 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 04:31:22,152 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 04:31:22,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:31:22 BoogieIcfgContainer [2022-07-21 04:31:22,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 04:31:22,155 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 04:31:22,155 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 04:31:22,157 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 04:31:22,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:31:20" (1/3) ... [2022-07-21 04:31:22,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1df82c6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:31:22, skipping insertion in model container [2022-07-21 04:31:22,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:31:20" (2/3) ... [2022-07-21 04:31:22,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1df82c6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:31:22, skipping insertion in model container [2022-07-21 04:31:22,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:31:22" (3/3) ... [2022-07-21 04:31:22,159 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product30.cil.c [2022-07-21 04:31:22,168 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 04:31:22,168 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 04:31:22,205 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 04:31:22,210 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@34db9952, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1fae1895 [2022-07-21 04:31:22,210 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 04:31:22,214 INFO L276 IsEmpty]: Start isEmpty. Operand has 581 states, 456 states have (on average 1.6929824561403508) internal successors, (772), 479 states have internal predecessors, (772), 98 states have call successors, (98), 25 states have call predecessors, (98), 25 states have return successors, (98), 91 states have call predecessors, (98), 98 states have call successors, (98) [2022-07-21 04:31:22,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-21 04:31:22,225 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:31:22,226 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:31:22,226 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:31:22,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:31:22,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1129781487, now seen corresponding path program 1 times [2022-07-21 04:31:22,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:31:22,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076201872] [2022-07-21 04:31:22,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:31:22,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:31:22,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:22,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:31:22,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:22,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:22,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:22,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:31:22,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:22,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 04:31:22,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:22,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:22,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:22,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:22,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:22,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:31:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:22,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:31:22,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:31:22,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076201872] [2022-07-21 04:31:22,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076201872] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:31:22,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:31:22,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:31:22,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78288466] [2022-07-21 04:31:22,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:31:22,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:31:22,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:31:22,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:31:22,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:31:22,903 INFO L87 Difference]: Start difference. First operand has 581 states, 456 states have (on average 1.6929824561403508) internal successors, (772), 479 states have internal predecessors, (772), 98 states have call successors, (98), 25 states have call predecessors, (98), 25 states have return successors, (98), 91 states have call predecessors, (98), 98 states have call successors, (98) Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:31:26,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:31:26,423 INFO L93 Difference]: Finished difference Result 1305 states and 2205 transitions. [2022-07-21 04:31:26,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 04:31:26,426 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2022-07-21 04:31:26,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:31:26,441 INFO L225 Difference]: With dead ends: 1305 [2022-07-21 04:31:26,441 INFO L226 Difference]: Without dead ends: 736 [2022-07-21 04:31:26,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:31:26,450 INFO L413 NwaCegarLoop]: 876 mSDtfsCounter, 1158 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 2212 mSolverCounterSat, 296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1242 SdHoareTripleChecker+Valid, 1729 SdHoareTripleChecker+Invalid, 2508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 2212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:31:26,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1242 Valid, 1729 Invalid, 2508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [296 Valid, 2212 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-21 04:31:26,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2022-07-21 04:31:26,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 573. [2022-07-21 04:31:26,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 450 states have (on average 1.6888888888888889) internal successors, (760), 471 states have internal predecessors, (760), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-07-21 04:31:26,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 951 transitions. [2022-07-21 04:31:26,581 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 951 transitions. Word has length 60 [2022-07-21 04:31:26,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:31:26,582 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 951 transitions. [2022-07-21 04:31:26,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:31:26,583 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 951 transitions. [2022-07-21 04:31:26,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-21 04:31:26,591 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:31:26,591 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:31:26,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 04:31:26,592 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:31:26,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:31:26,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1483396888, now seen corresponding path program 1 times [2022-07-21 04:31:26,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:31:26,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141146558] [2022-07-21 04:31:26,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:31:26,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:31:26,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:26,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:31:26,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:26,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:26,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:26,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:31:26,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:26,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 04:31:26,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:26,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:26,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:26,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:26,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:26,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:31:26,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:26,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:31:26,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:31:26,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141146558] [2022-07-21 04:31:26,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141146558] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:31:26,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:31:26,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:31:26,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567127500] [2022-07-21 04:31:26,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:31:26,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:31:26,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:31:26,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:31:26,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:31:26,881 INFO L87 Difference]: Start difference. First operand 573 states and 951 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, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:31:30,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:31:30,318 INFO L93 Difference]: Finished difference Result 1291 states and 2171 transitions. [2022-07-21 04:31:30,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 04:31:30,319 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, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2022-07-21 04:31:30,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:31:30,323 INFO L225 Difference]: With dead ends: 1291 [2022-07-21 04:31:30,324 INFO L226 Difference]: Without dead ends: 736 [2022-07-21 04:31:30,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:31:30,327 INFO L413 NwaCegarLoop]: 864 mSDtfsCounter, 1157 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 2210 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1241 SdHoareTripleChecker+Valid, 1686 SdHoareTripleChecker+Invalid, 2510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 2210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:31:30,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1241 Valid, 1686 Invalid, 2510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [300 Valid, 2210 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-21 04:31:30,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2022-07-21 04:31:30,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 573. [2022-07-21 04:31:30,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 450 states have (on average 1.6866666666666668) internal successors, (759), 471 states have internal predecessors, (759), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-07-21 04:31:30,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 950 transitions. [2022-07-21 04:31:30,368 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 950 transitions. Word has length 63 [2022-07-21 04:31:30,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:31:30,368 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 950 transitions. [2022-07-21 04:31:30,369 INFO L496 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, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:31:30,369 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 950 transitions. [2022-07-21 04:31:30,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-21 04:31:30,370 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:31:30,370 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:31:30,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 04:31:30,371 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:31:30,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:31:30,371 INFO L85 PathProgramCache]: Analyzing trace with hash -2110645953, now seen corresponding path program 1 times [2022-07-21 04:31:30,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:31:30,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846883865] [2022-07-21 04:31:30,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:31:30,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:31:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:30,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:31:30,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:30,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:30,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:30,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:31:30,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:30,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 04:31:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:30,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:30,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:30,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:30,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:30,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:31:30,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:30,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:31:30,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:31:30,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846883865] [2022-07-21 04:31:30,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846883865] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:31:30,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:31:30,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:31:30,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090122969] [2022-07-21 04:31:30,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:31:30,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:31:30,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:31:30,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:31:30,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:31:30,662 INFO L87 Difference]: Start difference. First operand 573 states and 950 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:31:34,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:31:34,284 INFO L93 Difference]: Finished difference Result 1291 states and 2170 transitions. [2022-07-21 04:31:34,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 04:31:34,284 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2022-07-21 04:31:34,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:31:34,288 INFO L225 Difference]: With dead ends: 1291 [2022-07-21 04:31:34,288 INFO L226 Difference]: Without dead ends: 736 [2022-07-21 04:31:34,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:31:34,291 INFO L413 NwaCegarLoop]: 862 mSDtfsCounter, 696 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 2390 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 1688 SdHoareTripleChecker+Invalid, 2538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 2390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-21 04:31:34,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 1688 Invalid, 2538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 2390 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-21 04:31:34,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2022-07-21 04:31:34,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 573. [2022-07-21 04:31:34,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 450 states have (on average 1.6844444444444444) internal successors, (758), 471 states have internal predecessors, (758), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-07-21 04:31:34,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 949 transitions. [2022-07-21 04:31:34,334 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 949 transitions. Word has length 64 [2022-07-21 04:31:34,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:31:34,335 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 949 transitions. [2022-07-21 04:31:34,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:31:34,335 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 949 transitions. [2022-07-21 04:31:34,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 04:31:34,336 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:31:34,336 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:31:34,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 04:31:34,336 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:31:34,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:31:34,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1042691004, now seen corresponding path program 1 times [2022-07-21 04:31:34,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:31:34,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918011608] [2022-07-21 04:31:34,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:31:34,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:31:34,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:34,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:31:34,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:34,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:34,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:34,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 04:31:34,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:34,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 04:31:34,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:34,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:34,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:34,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:34,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:31:34,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:34,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:31:34,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:31:34,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918011608] [2022-07-21 04:31:34,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918011608] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:31:34,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:31:34,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:31:34,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789951307] [2022-07-21 04:31:34,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:31:34,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:31:34,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:31:34,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:31:34,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:31:34,622 INFO L87 Difference]: Start difference. First operand 573 states and 949 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:31:38,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:31:38,299 INFO L93 Difference]: Finished difference Result 1291 states and 2169 transitions. [2022-07-21 04:31:38,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 04:31:38,299 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-07-21 04:31:38,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:31:38,303 INFO L225 Difference]: With dead ends: 1291 [2022-07-21 04:31:38,303 INFO L226 Difference]: Without dead ends: 736 [2022-07-21 04:31:38,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:31:38,306 INFO L413 NwaCegarLoop]: 864 mSDtfsCounter, 693 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 2388 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 777 SdHoareTripleChecker+Valid, 1694 SdHoareTripleChecker+Invalid, 2535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 2388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-21 04:31:38,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [777 Valid, 1694 Invalid, 2535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 2388 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-21 04:31:38,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2022-07-21 04:31:38,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 573. [2022-07-21 04:31:38,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 450 states have (on average 1.6822222222222223) internal successors, (757), 471 states have internal predecessors, (757), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-07-21 04:31:38,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 948 transitions. [2022-07-21 04:31:38,338 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 948 transitions. Word has length 65 [2022-07-21 04:31:38,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:31:38,338 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 948 transitions. [2022-07-21 04:31:38,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:31:38,338 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 948 transitions. [2022-07-21 04:31:38,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-21 04:31:38,339 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:31:38,340 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:31:38,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 04:31:38,340 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:31:38,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:31:38,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1036980827, now seen corresponding path program 1 times [2022-07-21 04:31:38,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:31:38,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397117452] [2022-07-21 04:31:38,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:31:38,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:31:38,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:38,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:31:38,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:38,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:38,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:38,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 04:31:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:38,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-21 04:31:38,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:38,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:38,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:38,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:38,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:38,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:31:38,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:38,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:31:38,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:31:38,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397117452] [2022-07-21 04:31:38,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397117452] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:31:38,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:31:38,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:31:38,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372024387] [2022-07-21 04:31:38,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:31:38,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:31:38,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:31:38,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:31:38,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:31:38,618 INFO L87 Difference]: Start difference. First operand 573 states and 948 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:31:41,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:31:41,677 INFO L93 Difference]: Finished difference Result 1291 states and 2168 transitions. [2022-07-21 04:31:41,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 04:31:41,691 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-21 04:31:41,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:31:41,695 INFO L225 Difference]: With dead ends: 1291 [2022-07-21 04:31:41,695 INFO L226 Difference]: Without dead ends: 736 [2022-07-21 04:31:41,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:31:41,698 INFO L413 NwaCegarLoop]: 869 mSDtfsCounter, 1142 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 2204 mSolverCounterSat, 296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1226 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 2500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 2204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-21 04:31:41,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1226 Valid, 1701 Invalid, 2500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [296 Valid, 2204 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-21 04:31:41,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2022-07-21 04:31:41,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 573. [2022-07-21 04:31:41,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 450 states have (on average 1.68) internal successors, (756), 471 states have internal predecessors, (756), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-07-21 04:31:41,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 947 transitions. [2022-07-21 04:31:41,743 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 947 transitions. Word has length 66 [2022-07-21 04:31:41,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:31:41,744 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 947 transitions. [2022-07-21 04:31:41,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:31:41,744 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 947 transitions. [2022-07-21 04:31:41,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-21 04:31:41,745 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:31:41,745 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:31:41,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 04:31:41,746 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:31:41,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:31:41,746 INFO L85 PathProgramCache]: Analyzing trace with hash 120137632, now seen corresponding path program 1 times [2022-07-21 04:31:41,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:31:41,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093705028] [2022-07-21 04:31:41,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:31:41,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:31:41,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:41,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:31:41,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:41,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:41,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:41,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:31:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:41,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:31:41,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:41,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:41,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:41,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:41,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:41,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:31:41,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:41,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:31:41,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:31:41,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093705028] [2022-07-21 04:31:41,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093705028] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:31:41,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:31:41,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:31:41,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828494722] [2022-07-21 04:31:41,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:31:41,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:31:41,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:31:41,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:31:41,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:31:41,983 INFO L87 Difference]: Start difference. First operand 573 states and 947 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:31:45,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:31:45,162 INFO L93 Difference]: Finished difference Result 1251 states and 2092 transitions. [2022-07-21 04:31:45,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 04:31:45,163 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2022-07-21 04:31:45,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:31:45,166 INFO L225 Difference]: With dead ends: 1251 [2022-07-21 04:31:45,166 INFO L226 Difference]: Without dead ends: 736 [2022-07-21 04:31:45,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:31:45,169 INFO L413 NwaCegarLoop]: 823 mSDtfsCounter, 756 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 2362 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 1664 SdHoareTripleChecker+Invalid, 2537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 2362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-21 04:31:45,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 1664 Invalid, 2537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 2362 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-21 04:31:45,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2022-07-21 04:31:45,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 573. [2022-07-21 04:31:45,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 450 states have (on average 1.6688888888888889) internal successors, (751), 471 states have internal predecessors, (751), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-07-21 04:31:45,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 942 transitions. [2022-07-21 04:31:45,200 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 942 transitions. Word has length 67 [2022-07-21 04:31:45,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:31:45,200 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 942 transitions. [2022-07-21 04:31:45,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:31:45,201 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 942 transitions. [2022-07-21 04:31:45,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-21 04:31:45,202 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:31:45,202 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:31:45,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 04:31:45,202 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:31:45,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:31:45,203 INFO L85 PathProgramCache]: Analyzing trace with hash -948333069, now seen corresponding path program 1 times [2022-07-21 04:31:45,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:31:45,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510628711] [2022-07-21 04:31:45,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:31:45,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:31:45,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:45,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:31:45,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:45,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:45,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:45,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:31:45,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:45,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 04:31:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:45,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:45,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:45,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:45,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:45,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:31:45,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:45,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:31:45,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:31:45,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510628711] [2022-07-21 04:31:45,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510628711] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:31:45,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:31:45,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:31:45,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982559759] [2022-07-21 04:31:45,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:31:45,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:31:45,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:31:45,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:31:45,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:31:45,462 INFO L87 Difference]: Start difference. First operand 573 states and 942 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:31:48,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:31:48,752 INFO L93 Difference]: Finished difference Result 1251 states and 2087 transitions. [2022-07-21 04:31:48,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 04:31:48,753 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2022-07-21 04:31:48,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:31:48,756 INFO L225 Difference]: With dead ends: 1251 [2022-07-21 04:31:48,756 INFO L226 Difference]: Without dead ends: 736 [2022-07-21 04:31:48,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:31:48,761 INFO L413 NwaCegarLoop]: 810 mSDtfsCounter, 755 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 2339 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 2515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 2339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:31:48,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [839 Valid, 1627 Invalid, 2515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 2339 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-21 04:31:48,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2022-07-21 04:31:48,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 573. [2022-07-21 04:31:48,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 450 states have (on average 1.6577777777777778) internal successors, (746), 471 states have internal predecessors, (746), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-07-21 04:31:48,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 937 transitions. [2022-07-21 04:31:48,794 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 937 transitions. Word has length 68 [2022-07-21 04:31:48,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:31:48,795 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 937 transitions. [2022-07-21 04:31:48,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:31:48,795 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 937 transitions. [2022-07-21 04:31:48,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-21 04:31:48,799 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:31:48,799 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:31:48,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 04:31:48,799 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:31:48,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:31:48,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1954669627, now seen corresponding path program 1 times [2022-07-21 04:31:48,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:31:48,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498596563] [2022-07-21 04:31:48,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:31:48,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:31:48,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:48,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:31:48,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:48,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:48,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:48,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:31:48,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:49,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 04:31:49,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:49,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:49,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:49,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:49,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:49,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:31:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:49,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:31:49,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:31:49,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498596563] [2022-07-21 04:31:49,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498596563] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:31:49,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:31:49,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:31:49,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65280040] [2022-07-21 04:31:49,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:31:49,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:31:49,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:31:49,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:31:49,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:31:49,067 INFO L87 Difference]: Start difference. First operand 573 states and 937 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:31:52,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:31:52,325 INFO L93 Difference]: Finished difference Result 1251 states and 2082 transitions. [2022-07-21 04:31:52,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 04:31:52,332 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2022-07-21 04:31:52,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:31:52,335 INFO L225 Difference]: With dead ends: 1251 [2022-07-21 04:31:52,335 INFO L226 Difference]: Without dead ends: 736 [2022-07-21 04:31:52,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:31:52,338 INFO L413 NwaCegarLoop]: 821 mSDtfsCounter, 754 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 2322 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 2488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 2322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:31:52,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [838 Valid, 1658 Invalid, 2488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 2322 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-21 04:31:52,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2022-07-21 04:31:52,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 573. [2022-07-21 04:31:52,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 450 states have (on average 1.6466666666666667) internal successors, (741), 471 states have internal predecessors, (741), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-07-21 04:31:52,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 932 transitions. [2022-07-21 04:31:52,372 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 932 transitions. Word has length 69 [2022-07-21 04:31:52,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:31:52,374 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 932 transitions. [2022-07-21 04:31:52,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:31:52,375 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 932 transitions. [2022-07-21 04:31:52,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-21 04:31:52,375 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:31:52,376 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:31:52,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 04:31:52,376 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:31:52,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:31:52,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1034847752, now seen corresponding path program 1 times [2022-07-21 04:31:52,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:31:52,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834784403] [2022-07-21 04:31:52,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:31:52,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:31:52,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:52,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:31:52,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:52,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:52,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:52,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:31:52,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:52,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 04:31:52,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:52,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:52,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:52,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:52,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:31:52,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:52,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:31:52,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:31:52,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834784403] [2022-07-21 04:31:52,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834784403] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:31:52,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:31:52,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:31:52,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888515367] [2022-07-21 04:31:52,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:31:52,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:31:52,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:31:52,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:31:52,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:31:52,627 INFO L87 Difference]: Start difference. First operand 573 states and 932 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:31:55,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:31:55,438 INFO L93 Difference]: Finished difference Result 1251 states and 2077 transitions. [2022-07-21 04:31:55,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 04:31:55,440 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2022-07-21 04:31:55,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:31:55,443 INFO L225 Difference]: With dead ends: 1251 [2022-07-21 04:31:55,443 INFO L226 Difference]: Without dead ends: 736 [2022-07-21 04:31:55,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:31:55,445 INFO L413 NwaCegarLoop]: 813 mSDtfsCounter, 1216 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 2135 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1300 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 2450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 2135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-21 04:31:55,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1300 Valid, 1615 Invalid, 2450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 2135 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-21 04:31:55,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2022-07-21 04:31:55,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 573. [2022-07-21 04:31:55,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 450 states have (on average 1.6355555555555557) internal successors, (736), 471 states have internal predecessors, (736), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-07-21 04:31:55,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 927 transitions. [2022-07-21 04:31:55,479 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 927 transitions. Word has length 70 [2022-07-21 04:31:55,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:31:55,479 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 927 transitions. [2022-07-21 04:31:55,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:31:55,479 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 927 transitions. [2022-07-21 04:31:55,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-21 04:31:55,480 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:31:55,480 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:31:55,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 04:31:55,481 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:31:55,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:31:55,481 INFO L85 PathProgramCache]: Analyzing trace with hash -90463079, now seen corresponding path program 1 times [2022-07-21 04:31:55,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:31:55,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65286510] [2022-07-21 04:31:55,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:31:55,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:31:55,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:55,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:31:55,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:55,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:55,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:55,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:31:55,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:55,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 04:31:55,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:55,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:55,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:55,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:55,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:55,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:31:55,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:55,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:31:55,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:31:55,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65286510] [2022-07-21 04:31:55,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65286510] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:31:55,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:31:55,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:31:55,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940347900] [2022-07-21 04:31:55,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:31:55,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:31:55,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:31:55,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:31:55,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:31:55,727 INFO L87 Difference]: Start difference. First operand 573 states and 927 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:31:58,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:31:58,863 INFO L93 Difference]: Finished difference Result 1266 states and 2092 transitions. [2022-07-21 04:31:58,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 04:31:58,864 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2022-07-21 04:31:58,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:31:58,867 INFO L225 Difference]: With dead ends: 1266 [2022-07-21 04:31:58,867 INFO L226 Difference]: Without dead ends: 757 [2022-07-21 04:31:58,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:31:58,869 INFO L413 NwaCegarLoop]: 830 mSDtfsCounter, 1220 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 2134 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1304 SdHoareTripleChecker+Valid, 1638 SdHoareTripleChecker+Invalid, 2441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 2134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-21 04:31:58,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1304 Valid, 1638 Invalid, 2441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 2134 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-21 04:31:58,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2022-07-21 04:31:58,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 575. [2022-07-21 04:31:58,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 452 states have (on average 1.6327433628318584) internal successors, (738), 473 states have internal predecessors, (738), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-07-21 04:31:58,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 929 transitions. [2022-07-21 04:31:58,904 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 929 transitions. Word has length 70 [2022-07-21 04:31:58,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:31:58,905 INFO L495 AbstractCegarLoop]: Abstraction has 575 states and 929 transitions. [2022-07-21 04:31:58,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:31:58,905 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 929 transitions. [2022-07-21 04:31:58,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-21 04:31:58,906 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:31:58,906 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:31:58,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 04:31:58,907 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:31:58,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:31:58,907 INFO L85 PathProgramCache]: Analyzing trace with hash -533656598, now seen corresponding path program 1 times [2022-07-21 04:31:58,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:31:58,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933548259] [2022-07-21 04:31:58,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:31:58,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:31:58,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:58,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:31:58,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:58,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:58,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:58,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:31:58,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:59,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 04:31:59,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:59,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:59,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:59,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:31:59,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:59,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:31:59,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:31:59,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:31:59,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:31:59,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933548259] [2022-07-21 04:31:59,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933548259] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:31:59,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:31:59,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:31:59,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633926205] [2022-07-21 04:31:59,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:31:59,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:31:59,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:31:59,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:31:59,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:31:59,173 INFO L87 Difference]: Start difference. First operand 575 states and 929 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:32:01,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:32:01,984 INFO L93 Difference]: Finished difference Result 1257 states and 2078 transitions. [2022-07-21 04:32:01,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 04:32:01,984 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2022-07-21 04:32:01,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:32:01,987 INFO L225 Difference]: With dead ends: 1257 [2022-07-21 04:32:01,987 INFO L226 Difference]: Without dead ends: 740 [2022-07-21 04:32:01,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:32:01,989 INFO L413 NwaCegarLoop]: 821 mSDtfsCounter, 1209 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 2120 mSolverCounterSat, 304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 1640 SdHoareTripleChecker+Invalid, 2424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 2120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-21 04:32:01,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1293 Valid, 1640 Invalid, 2424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [304 Valid, 2120 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-21 04:32:01,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2022-07-21 04:32:02,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 575. [2022-07-21 04:32:02,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 452 states have (on average 1.6216814159292035) internal successors, (733), 473 states have internal predecessors, (733), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-07-21 04:32:02,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 924 transitions. [2022-07-21 04:32:02,023 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 924 transitions. Word has length 71 [2022-07-21 04:32:02,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:32:02,023 INFO L495 AbstractCegarLoop]: Abstraction has 575 states and 924 transitions. [2022-07-21 04:32:02,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:32:02,024 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 924 transitions. [2022-07-21 04:32:02,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-21 04:32:02,024 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:32:02,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:32:02,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 04:32:02,025 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:32:02,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:32:02,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1018314521, now seen corresponding path program 1 times [2022-07-21 04:32:02,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:32:02,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754108050] [2022-07-21 04:32:02,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:32:02,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:32:02,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:02,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:32:02,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:02,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:32:02,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:02,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:32:02,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:02,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 04:32:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:02,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:32:02,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:02,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:32:02,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:02,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:32:02,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:02,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:32:02,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:32:02,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754108050] [2022-07-21 04:32:02,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754108050] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:32:02,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:32:02,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:32:02,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483648188] [2022-07-21 04:32:02,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:32:02,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:32:02,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:32:02,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:32:02,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:32:02,257 INFO L87 Difference]: Start difference. First operand 575 states and 924 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:32:05,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:32:05,661 INFO L93 Difference]: Finished difference Result 1270 states and 2089 transitions. [2022-07-21 04:32:05,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 04:32:05,661 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2022-07-21 04:32:05,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:32:05,665 INFO L225 Difference]: With dead ends: 1270 [2022-07-21 04:32:05,665 INFO L226 Difference]: Without dead ends: 761 [2022-07-21 04:32:05,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:32:05,667 INFO L413 NwaCegarLoop]: 826 mSDtfsCounter, 761 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 2270 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 1643 SdHoareTripleChecker+Invalid, 2423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 2270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-21 04:32:05,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [845 Valid, 1643 Invalid, 2423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 2270 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-21 04:32:05,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2022-07-21 04:32:05,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 578. [2022-07-21 04:32:05,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 455 states have (on average 1.6175824175824176) internal successors, (736), 476 states have internal predecessors, (736), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-07-21 04:32:05,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 927 transitions. [2022-07-21 04:32:05,703 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 927 transitions. Word has length 71 [2022-07-21 04:32:05,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:32:05,703 INFO L495 AbstractCegarLoop]: Abstraction has 578 states and 927 transitions. [2022-07-21 04:32:05,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:32:05,704 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 927 transitions. [2022-07-21 04:32:05,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-21 04:32:05,704 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:32:05,705 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:32:05,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 04:32:05,705 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:32:05,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:32:05,705 INFO L85 PathProgramCache]: Analyzing trace with hash -125115907, now seen corresponding path program 1 times [2022-07-21 04:32:05,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:32:05,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311691627] [2022-07-21 04:32:05,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:32:05,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:32:05,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:05,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:32:05,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:05,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:32:05,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:05,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:32:05,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:05,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:32:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:05,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:32:05,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:05,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:32:05,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:05,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:32:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:05,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:32:05,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:32:05,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311691627] [2022-07-21 04:32:05,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311691627] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:32:05,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:32:05,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 04:32:05,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444325846] [2022-07-21 04:32:05,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:32:05,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 04:32:05,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:32:05,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 04:32:05,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:32:05,987 INFO L87 Difference]: Start difference. First operand 578 states and 927 transitions. Second operand has 9 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 04:32:10,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:32:10,252 INFO L93 Difference]: Finished difference Result 1274 states and 2095 transitions. [2022-07-21 04:32:10,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 04:32:10,252 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 72 [2022-07-21 04:32:10,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:32:10,256 INFO L225 Difference]: With dead ends: 1274 [2022-07-21 04:32:10,256 INFO L226 Difference]: Without dead ends: 768 [2022-07-21 04:32:10,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:32:10,259 INFO L413 NwaCegarLoop]: 850 mSDtfsCounter, 771 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 4610 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 2610 SdHoareTripleChecker+Invalid, 4759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 4610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-21 04:32:10,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 2610 Invalid, 4759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 4610 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-21 04:32:10,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2022-07-21 04:32:10,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 589. [2022-07-21 04:32:10,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 463 states have (on average 1.613390928725702) internal successors, (747), 486 states have internal predecessors, (747), 99 states have call successors, (99), 25 states have call predecessors, (99), 26 states have return successors, (96), 91 states have call predecessors, (96), 94 states have call successors, (96) [2022-07-21 04:32:10,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 942 transitions. [2022-07-21 04:32:10,310 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 942 transitions. Word has length 72 [2022-07-21 04:32:10,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:32:10,311 INFO L495 AbstractCegarLoop]: Abstraction has 589 states and 942 transitions. [2022-07-21 04:32:10,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 04:32:10,311 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 942 transitions. [2022-07-21 04:32:10,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-21 04:32:10,312 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:32:10,312 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:32:10,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 04:32:10,312 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:32:10,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:32:10,313 INFO L85 PathProgramCache]: Analyzing trace with hash -805304994, now seen corresponding path program 1 times [2022-07-21 04:32:10,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:32:10,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898600976] [2022-07-21 04:32:10,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:32:10,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:32:10,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:10,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:32:10,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:10,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:32:10,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:10,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:32:10,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:10,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:32:10,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:10,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:32:10,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:10,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:32:10,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:10,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:32:10,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:10,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:32:10,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:32:10,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898600976] [2022-07-21 04:32:10,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898600976] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:32:10,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:32:10,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:32:10,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905461660] [2022-07-21 04:32:10,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:32:10,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:32:10,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:32:10,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:32:10,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:32:10,593 INFO L87 Difference]: Start difference. First operand 589 states and 942 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:32:13,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:32:13,916 INFO L93 Difference]: Finished difference Result 1297 states and 2126 transitions. [2022-07-21 04:32:13,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 04:32:13,917 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-07-21 04:32:13,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:32:13,920 INFO L225 Difference]: With dead ends: 1297 [2022-07-21 04:32:13,920 INFO L226 Difference]: Without dead ends: 785 [2022-07-21 04:32:13,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:32:13,922 INFO L413 NwaCegarLoop]: 832 mSDtfsCounter, 756 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 2268 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 1660 SdHoareTripleChecker+Invalid, 2419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 2268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-21 04:32:13,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 1660 Invalid, 2419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 2268 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-21 04:32:13,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2022-07-21 04:32:13,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 593. [2022-07-21 04:32:13,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 467 states have (on average 1.6059957173447537) internal successors, (750), 490 states have internal predecessors, (750), 99 states have call successors, (99), 25 states have call predecessors, (99), 26 states have return successors, (96), 91 states have call predecessors, (96), 94 states have call successors, (96) [2022-07-21 04:32:13,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 945 transitions. [2022-07-21 04:32:13,961 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 945 transitions. Word has length 72 [2022-07-21 04:32:13,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:32:13,961 INFO L495 AbstractCegarLoop]: Abstraction has 593 states and 945 transitions. [2022-07-21 04:32:13,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:32:13,961 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 945 transitions. [2022-07-21 04:32:13,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-21 04:32:13,962 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:32:13,962 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:32:13,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 04:32:13,963 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:32:13,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:32:13,963 INFO L85 PathProgramCache]: Analyzing trace with hash 568276798, now seen corresponding path program 1 times [2022-07-21 04:32:13,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:32:13,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978282860] [2022-07-21 04:32:13,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:32:13,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:32:13,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:14,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:32:14,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:14,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:32:14,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:14,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:32:14,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:14,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:32:14,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:14,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:32:14,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:14,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:32:14,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:14,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:32:14,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:14,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:32:14,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:32:14,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978282860] [2022-07-21 04:32:14,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978282860] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:32:14,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:32:14,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:32:14,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500062628] [2022-07-21 04:32:14,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:32:14,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:32:14,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:32:14,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:32:14,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:32:14,203 INFO L87 Difference]: Start difference. First operand 593 states and 945 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:32:17,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:32:17,092 INFO L93 Difference]: Finished difference Result 1339 states and 2169 transitions. [2022-07-21 04:32:17,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 04:32:17,092 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-07-21 04:32:17,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:32:17,096 INFO L225 Difference]: With dead ends: 1339 [2022-07-21 04:32:17,096 INFO L226 Difference]: Without dead ends: 744 [2022-07-21 04:32:17,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 04:32:17,098 INFO L413 NwaCegarLoop]: 835 mSDtfsCounter, 1137 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 2128 mSolverCounterSat, 297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1221 SdHoareTripleChecker+Valid, 1645 SdHoareTripleChecker+Invalid, 2425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 2128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-21 04:32:17,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1221 Valid, 1645 Invalid, 2425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 2128 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-21 04:32:17,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2022-07-21 04:32:17,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 574. [2022-07-21 04:32:17,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 451 states have (on average 1.6141906873614191) internal successors, (728), 472 states have internal predecessors, (728), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-07-21 04:32:17,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 919 transitions. [2022-07-21 04:32:17,136 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 919 transitions. Word has length 72 [2022-07-21 04:32:17,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:32:17,136 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 919 transitions. [2022-07-21 04:32:17,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:32:17,136 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 919 transitions. [2022-07-21 04:32:17,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-21 04:32:17,137 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:32:17,137 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:32:17,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 04:32:17,138 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:32:17,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:32:17,138 INFO L85 PathProgramCache]: Analyzing trace with hash 414656204, now seen corresponding path program 1 times [2022-07-21 04:32:17,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:32:17,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627402298] [2022-07-21 04:32:17,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:32:17,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:32:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:17,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:32:17,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:17,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:32:17,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:17,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:32:17,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:17,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 04:32:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:17,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:32:17,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:17,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:32:17,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:17,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:32:17,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:17,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:32:17,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:32:17,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627402298] [2022-07-21 04:32:17,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627402298] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:32:17,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:32:17,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 04:32:17,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387095874] [2022-07-21 04:32:17,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:32:17,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 04:32:17,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:32:17,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 04:32:17,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 04:32:17,359 INFO L87 Difference]: Start difference. First operand 574 states and 919 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:32:20,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:32:20,375 INFO L93 Difference]: Finished difference Result 1274 states and 2084 transitions. [2022-07-21 04:32:20,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 04:32:20,376 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 73 [2022-07-21 04:32:20,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:32:20,379 INFO L225 Difference]: With dead ends: 1274 [2022-07-21 04:32:20,379 INFO L226 Difference]: Without dead ends: 765 [2022-07-21 04:32:20,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:32:20,381 INFO L413 NwaCegarLoop]: 823 mSDtfsCounter, 1183 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 2101 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1267 SdHoareTripleChecker+Valid, 1638 SdHoareTripleChecker+Invalid, 2400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 2101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-21 04:32:20,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1267 Valid, 1638 Invalid, 2400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 2101 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-21 04:32:20,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2022-07-21 04:32:20,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 579. [2022-07-21 04:32:20,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 456 states have (on average 1.6074561403508771) internal successors, (733), 477 states have internal predecessors, (733), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-07-21 04:32:20,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 924 transitions. [2022-07-21 04:32:20,420 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 924 transitions. Word has length 73 [2022-07-21 04:32:20,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:32:20,420 INFO L495 AbstractCegarLoop]: Abstraction has 579 states and 924 transitions. [2022-07-21 04:32:20,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 04:32:20,420 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 924 transitions. [2022-07-21 04:32:20,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-21 04:32:20,421 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:32:20,421 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:32:20,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 04:32:20,421 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:32:20,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:32:20,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1473566669, now seen corresponding path program 1 times [2022-07-21 04:32:20,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:32:20,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398286087] [2022-07-21 04:32:20,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:32:20,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:32:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:20,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:32:20,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:20,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:32:20,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:20,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:32:20,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:20,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:32:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:20,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:32:20,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:20,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:32:20,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:20,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:32:20,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:20,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:32:20,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:32:20,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398286087] [2022-07-21 04:32:20,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398286087] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:32:20,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:32:20,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 04:32:20,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615300870] [2022-07-21 04:32:20,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:32:20,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 04:32:20,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:32:20,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 04:32:20,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:32:20,772 INFO L87 Difference]: Start difference. First operand 579 states and 924 transitions. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 7 states have internal predecessors, (59), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-21 04:32:27,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:32:27,296 INFO L93 Difference]: Finished difference Result 2090 states and 3506 transitions. [2022-07-21 04:32:27,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 04:32:27,296 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 7 states have internal predecessors, (59), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 74 [2022-07-21 04:32:27,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:32:27,308 INFO L225 Difference]: With dead ends: 2090 [2022-07-21 04:32:27,308 INFO L226 Difference]: Without dead ends: 1589 [2022-07-21 04:32:27,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:32:27,311 INFO L413 NwaCegarLoop]: 886 mSDtfsCounter, 4392 mSDsluCounter, 1402 mSDsCounter, 0 mSdLazyCounter, 4338 mSolverCounterSat, 1320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4482 SdHoareTripleChecker+Valid, 2288 SdHoareTripleChecker+Invalid, 5658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1320 IncrementalHoareTripleChecker+Valid, 4338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-07-21 04:32:27,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4482 Valid, 2288 Invalid, 5658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1320 Valid, 4338 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-07-21 04:32:27,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2022-07-21 04:32:27,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 1097. [2022-07-21 04:32:27,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1097 states, 862 states have (on average 1.640371229698376) internal successors, (1414), 892 states have internal predecessors, (1414), 190 states have call successors, (190), 43 states have call predecessors, (190), 44 states have return successors, (192), 174 states have call predecessors, (192), 185 states have call successors, (192) [2022-07-21 04:32:27,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 1796 transitions. [2022-07-21 04:32:27,411 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 1796 transitions. Word has length 74 [2022-07-21 04:32:27,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:32:27,411 INFO L495 AbstractCegarLoop]: Abstraction has 1097 states and 1796 transitions. [2022-07-21 04:32:27,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 7 states have internal predecessors, (59), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-21 04:32:27,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 1796 transitions. [2022-07-21 04:32:27,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 04:32:27,414 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:32:27,414 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:32:27,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 04:32:27,414 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:32:27,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:32:27,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1713019214, now seen corresponding path program 1 times [2022-07-21 04:32:27,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:32:27,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870669002] [2022-07-21 04:32:27,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:32:27,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:32:27,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:27,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:32:27,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:27,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:32:27,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:27,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:32:27,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:27,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:32:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:27,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:32:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:27,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:32:27,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:27,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:32:27,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:27,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:32:27,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:27,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:32:27,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:27,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 04:32:27,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:27,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 04:32:27,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:27,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 04:32:27,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:27,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:32:27,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:32:27,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870669002] [2022-07-21 04:32:27,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870669002] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:32:27,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:32:27,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-21 04:32:27,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881651038] [2022-07-21 04:32:27,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:32:27,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 04:32:27,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:32:27,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 04:32:27,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-07-21 04:32:27,926 INFO L87 Difference]: Start difference. First operand 1097 states and 1796 transitions. Second operand has 18 states, 16 states have (on average 5.4375) internal successors, (87), 10 states have internal predecessors, (87), 5 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-21 04:32:38,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:32:38,924 INFO L93 Difference]: Finished difference Result 3365 states and 5666 transitions. [2022-07-21 04:32:38,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-21 04:32:38,925 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 5.4375) internal successors, (87), 10 states have internal predecessors, (87), 5 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 112 [2022-07-21 04:32:38,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:32:38,933 INFO L225 Difference]: With dead ends: 3365 [2022-07-21 04:32:38,933 INFO L226 Difference]: Without dead ends: 2346 [2022-07-21 04:32:38,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=326, Invalid=1566, Unknown=0, NotChecked=0, Total=1892 [2022-07-21 04:32:38,937 INFO L413 NwaCegarLoop]: 1056 mSDtfsCounter, 3891 mSDsluCounter, 4570 mSDsCounter, 0 mSdLazyCounter, 12685 mSolverCounterSat, 1665 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3904 SdHoareTripleChecker+Valid, 5626 SdHoareTripleChecker+Invalid, 14350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1665 IncrementalHoareTripleChecker+Valid, 12685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-07-21 04:32:38,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3904 Valid, 5626 Invalid, 14350 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1665 Valid, 12685 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-07-21 04:32:38,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2346 states. [2022-07-21 04:32:39,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 1576. [2022-07-21 04:32:39,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1576 states, 1225 states have (on average 1.6048979591836734) internal successors, (1966), 1257 states have internal predecessors, (1966), 278 states have call successors, (278), 59 states have call predecessors, (278), 72 states have return successors, (315), 270 states have call predecessors, (315), 273 states have call successors, (315) [2022-07-21 04:32:39,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 2559 transitions. [2022-07-21 04:32:39,086 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 2559 transitions. Word has length 112 [2022-07-21 04:32:39,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:32:39,086 INFO L495 AbstractCegarLoop]: Abstraction has 1576 states and 2559 transitions. [2022-07-21 04:32:39,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 5.4375) internal successors, (87), 10 states have internal predecessors, (87), 5 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-21 04:32:39,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 2559 transitions. [2022-07-21 04:32:39,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-21 04:32:39,089 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:32:39,089 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:32:39,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 04:32:39,090 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:32:39,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:32:39,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1223906611, now seen corresponding path program 1 times [2022-07-21 04:32:39,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:32:39,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811081252] [2022-07-21 04:32:39,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:32:39,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:32:39,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:39,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:32:39,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:39,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:32:39,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:39,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:32:39,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:39,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:32:39,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:39,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:32:39,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:39,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:32:39,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:39,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:32:39,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:39,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:32:39,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:39,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:32:39,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:39,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 04:32:39,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:39,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 04:32:39,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:39,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 04:32:39,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:39,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:32:39,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:32:39,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811081252] [2022-07-21 04:32:39,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811081252] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:32:39,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:32:39,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-21 04:32:39,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092802304] [2022-07-21 04:32:39,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:32:39,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 04:32:39,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:32:39,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 04:32:39,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-07-21 04:32:39,580 INFO L87 Difference]: Start difference. First operand 1576 states and 2559 transitions. Second operand has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-21 04:32:45,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:32:45,069 INFO L93 Difference]: Finished difference Result 3703 states and 6151 transitions. [2022-07-21 04:32:45,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 04:32:45,070 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) Word has length 114 [2022-07-21 04:32:45,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:32:45,077 INFO L225 Difference]: With dead ends: 3703 [2022-07-21 04:32:45,077 INFO L226 Difference]: Without dead ends: 2207 [2022-07-21 04:32:45,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2022-07-21 04:32:45,082 INFO L413 NwaCegarLoop]: 870 mSDtfsCounter, 3065 mSDsluCounter, 2354 mSDsCounter, 0 mSdLazyCounter, 5024 mSolverCounterSat, 1122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3065 SdHoareTripleChecker+Valid, 3224 SdHoareTripleChecker+Invalid, 6146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1122 IncrementalHoareTripleChecker+Valid, 5024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:32:45,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3065 Valid, 3224 Invalid, 6146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1122 Valid, 5024 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-07-21 04:32:45,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2207 states. [2022-07-21 04:32:45,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2207 to 1578. [2022-07-21 04:32:45,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1578 states, 1227 states have (on average 1.6039119804400979) internal successors, (1968), 1257 states have internal predecessors, (1968), 278 states have call successors, (278), 59 states have call predecessors, (278), 72 states have return successors, (315), 272 states have call predecessors, (315), 273 states have call successors, (315) [2022-07-21 04:32:45,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 2561 transitions. [2022-07-21 04:32:45,229 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 2561 transitions. Word has length 114 [2022-07-21 04:32:45,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:32:45,229 INFO L495 AbstractCegarLoop]: Abstraction has 1578 states and 2561 transitions. [2022-07-21 04:32:45,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-21 04:32:45,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 2561 transitions. [2022-07-21 04:32:45,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-21 04:32:45,233 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:32:45,233 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:32:45,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 04:32:45,233 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:32:45,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:32:45,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1027503763, now seen corresponding path program 1 times [2022-07-21 04:32:45,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:32:45,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416925905] [2022-07-21 04:32:45,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:32:45,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:32:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:45,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:32:45,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:45,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:32:45,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:45,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:32:45,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:45,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:32:45,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:45,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:32:45,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:45,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:32:45,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:45,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:32:45,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:45,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:32:45,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:45,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:32:45,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:45,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 04:32:45,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:45,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 04:32:45,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:45,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 04:32:45,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:45,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:32:45,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:32:45,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416925905] [2022-07-21 04:32:45,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416925905] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:32:45,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:32:45,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-21 04:32:45,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206608695] [2022-07-21 04:32:45,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:32:45,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-21 04:32:45,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:32:45,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-21 04:32:45,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-07-21 04:32:45,698 INFO L87 Difference]: Start difference. First operand 1578 states and 2561 transitions. Second operand has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 10 states have internal predecessors, (89), 5 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-21 04:32:54,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:32:54,046 INFO L93 Difference]: Finished difference Result 4329 states and 7199 transitions. [2022-07-21 04:32:54,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-21 04:32:54,053 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 10 states have internal predecessors, (89), 5 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 114 [2022-07-21 04:32:54,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:32:54,064 INFO L225 Difference]: With dead ends: 4329 [2022-07-21 04:32:54,064 INFO L226 Difference]: Without dead ends: 2831 [2022-07-21 04:32:54,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2022-07-21 04:32:54,071 INFO L413 NwaCegarLoop]: 1092 mSDtfsCounter, 3782 mSDsluCounter, 2843 mSDsCounter, 0 mSdLazyCounter, 7293 mSolverCounterSat, 1471 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3782 SdHoareTripleChecker+Valid, 3935 SdHoareTripleChecker+Invalid, 8764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1471 IncrementalHoareTripleChecker+Valid, 7293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-07-21 04:32:54,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3782 Valid, 3935 Invalid, 8764 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1471 Valid, 7293 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-07-21 04:32:54,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2831 states. [2022-07-21 04:32:54,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2831 to 2089. [2022-07-21 04:32:54,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2089 states, 1631 states have (on average 1.6020846106683015) internal successors, (2613), 1661 states have internal predecessors, (2613), 358 states have call successors, (358), 83 states have call predecessors, (358), 99 states have return successors, (410), 355 states have call predecessors, (410), 353 states have call successors, (410) [2022-07-21 04:32:54,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2089 states to 2089 states and 3381 transitions. [2022-07-21 04:32:54,305 INFO L78 Accepts]: Start accepts. Automaton has 2089 states and 3381 transitions. Word has length 114 [2022-07-21 04:32:54,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:32:54,306 INFO L495 AbstractCegarLoop]: Abstraction has 2089 states and 3381 transitions. [2022-07-21 04:32:54,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 10 states have internal predecessors, (89), 5 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-21 04:32:54,306 INFO L276 IsEmpty]: Start isEmpty. Operand 2089 states and 3381 transitions. [2022-07-21 04:32:54,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-21 04:32:54,309 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:32:54,309 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:32:54,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 04:32:54,309 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:32:54,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:32:54,309 INFO L85 PathProgramCache]: Analyzing trace with hash -2080201733, now seen corresponding path program 1 times [2022-07-21 04:32:54,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:32:54,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41055070] [2022-07-21 04:32:54,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:32:54,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:32:54,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:54,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:32:54,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:54,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:32:54,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:54,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:32:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:54,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:32:54,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:54,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:32:54,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:54,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:32:54,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:54,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:32:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:54,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:32:54,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:54,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:32:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:54,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 04:32:54,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:54,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 04:32:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:54,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-21 04:32:54,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:32:54,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:32:54,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:32:54,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41055070] [2022-07-21 04:32:54,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41055070] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:32:54,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:32:54,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-21 04:32:54,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339428797] [2022-07-21 04:32:54,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:32:54,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 04:32:54,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:32:54,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 04:32:54,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:32:54,757 INFO L87 Difference]: Start difference. First operand 2089 states and 3381 transitions. Second operand has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 9 states have internal predecessors, (92), 5 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-21 04:33:09,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:33:09,699 INFO L93 Difference]: Finished difference Result 9039 states and 15779 transitions. [2022-07-21 04:33:09,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-21 04:33:09,700 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 9 states have internal predecessors, (92), 5 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 117 [2022-07-21 04:33:09,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:33:09,731 INFO L225 Difference]: With dead ends: 9039 [2022-07-21 04:33:09,732 INFO L226 Difference]: Without dead ends: 7020 [2022-07-21 04:33:09,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=550, Invalid=1172, Unknown=0, NotChecked=0, Total=1722 [2022-07-21 04:33:09,745 INFO L413 NwaCegarLoop]: 997 mSDtfsCounter, 5777 mSDsluCounter, 2331 mSDsCounter, 0 mSdLazyCounter, 6919 mSolverCounterSat, 2816 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5777 SdHoareTripleChecker+Valid, 3328 SdHoareTripleChecker+Invalid, 9735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2816 IncrementalHoareTripleChecker+Valid, 6919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2022-07-21 04:33:09,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5777 Valid, 3328 Invalid, 9735 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2816 Valid, 6919 Invalid, 0 Unknown, 0 Unchecked, 11.6s Time] [2022-07-21 04:33:09,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7020 states. [2022-07-21 04:33:10,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7020 to 5397. [2022-07-21 04:33:10,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5397 states, 4192 states have (on average 1.5734732824427482) internal successors, (6596), 4276 states have internal predecessors, (6596), 924 states have call successors, (924), 231 states have call predecessors, (924), 280 states have return successors, (1326), 922 states have call predecessors, (1326), 919 states have call successors, (1326) [2022-07-21 04:33:10,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5397 states to 5397 states and 8846 transitions. [2022-07-21 04:33:10,459 INFO L78 Accepts]: Start accepts. Automaton has 5397 states and 8846 transitions. Word has length 117 [2022-07-21 04:33:10,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:33:10,459 INFO L495 AbstractCegarLoop]: Abstraction has 5397 states and 8846 transitions. [2022-07-21 04:33:10,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 9 states have internal predecessors, (92), 5 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-21 04:33:10,460 INFO L276 IsEmpty]: Start isEmpty. Operand 5397 states and 8846 transitions. [2022-07-21 04:33:10,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-21 04:33:10,463 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:33:10,463 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:33:10,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 04:33:10,464 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:33:10,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:33:10,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1940227615, now seen corresponding path program 1 times [2022-07-21 04:33:10,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:33:10,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844287821] [2022-07-21 04:33:10,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:33:10,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:33:10,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:10,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:33:10,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:10,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:33:10,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:10,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:33:10,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:10,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:33:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:10,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:33:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:10,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:33:10,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:10,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:33:10,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:10,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:33:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:10,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:33:10,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:10,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:33:10,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:10,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 04:33:10,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:10,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 04:33:10,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:10,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:33:10,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:33:10,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844287821] [2022-07-21 04:33:10,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844287821] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:33:10,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:33:10,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-21 04:33:10,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176912747] [2022-07-21 04:33:10,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:33:10,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 04:33:10,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:33:10,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 04:33:10,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-07-21 04:33:10,982 INFO L87 Difference]: Start difference. First operand 5397 states and 8846 transitions. Second operand has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 8 states have internal predecessors, (93), 4 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-21 04:33:18,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:33:18,293 INFO L93 Difference]: Finished difference Result 12379 states and 20864 transitions. [2022-07-21 04:33:18,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 04:33:18,294 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 8 states have internal predecessors, (93), 4 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) Word has length 118 [2022-07-21 04:33:18,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:33:18,324 INFO L225 Difference]: With dead ends: 12379 [2022-07-21 04:33:18,325 INFO L226 Difference]: Without dead ends: 7062 [2022-07-21 04:33:18,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2022-07-21 04:33:18,342 INFO L413 NwaCegarLoop]: 875 mSDtfsCounter, 2372 mSDsluCounter, 2473 mSDsCounter, 0 mSdLazyCounter, 5614 mSolverCounterSat, 880 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2372 SdHoareTripleChecker+Valid, 3348 SdHoareTripleChecker+Invalid, 6494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 880 IncrementalHoareTripleChecker+Valid, 5614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:33:18,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2372 Valid, 3348 Invalid, 6494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [880 Valid, 5614 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-07-21 04:33:18,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7062 states. [2022-07-21 04:33:18,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7062 to 5409. [2022-07-21 04:33:18,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5409 states, 4204 states have (on average 1.5718363463368221) internal successors, (6608), 4276 states have internal predecessors, (6608), 924 states have call successors, (924), 231 states have call predecessors, (924), 280 states have return successors, (1326), 934 states have call predecessors, (1326), 919 states have call successors, (1326) [2022-07-21 04:33:18,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5409 states to 5409 states and 8858 transitions. [2022-07-21 04:33:18,999 INFO L78 Accepts]: Start accepts. Automaton has 5409 states and 8858 transitions. Word has length 118 [2022-07-21 04:33:18,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:33:18,999 INFO L495 AbstractCegarLoop]: Abstraction has 5409 states and 8858 transitions. [2022-07-21 04:33:18,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 8 states have internal predecessors, (93), 4 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-21 04:33:19,000 INFO L276 IsEmpty]: Start isEmpty. Operand 5409 states and 8858 transitions. [2022-07-21 04:33:19,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-21 04:33:19,003 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:33:19,003 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:33:19,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-21 04:33:19,003 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:33:19,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:33:19,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1313058231, now seen corresponding path program 1 times [2022-07-21 04:33:19,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:33:19,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236499563] [2022-07-21 04:33:19,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:33:19,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:33:19,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:19,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:33:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:19,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:33:19,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:19,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:33:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:19,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:33:19,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:19,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:33:19,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:19,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:33:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:19,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:33:19,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:19,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:33:19,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:19,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:33:19,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:19,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 04:33:19,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:19,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:33:19,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:19,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 04:33:19,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:19,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 04:33:19,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:19,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 04:33:19,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:33:19,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236499563] [2022-07-21 04:33:19,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236499563] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:33:19,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:33:19,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-21 04:33:19,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990177128] [2022-07-21 04:33:19,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:33:19,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-21 04:33:19,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:33:19,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-21 04:33:19,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-07-21 04:33:19,473 INFO L87 Difference]: Start difference. First operand 5409 states and 8858 transitions. Second operand has 16 states, 16 states have (on average 6.1875) internal successors, (99), 12 states have internal predecessors, (99), 7 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (13), 8 states have call predecessors, (13), 7 states have call successors, (13) [2022-07-21 04:33:31,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:33:31,497 INFO L93 Difference]: Finished difference Result 17586 states and 30258 transitions. [2022-07-21 04:33:31,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-21 04:33:31,498 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.1875) internal successors, (99), 12 states have internal predecessors, (99), 7 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (13), 8 states have call predecessors, (13), 7 states have call successors, (13) Word has length 126 [2022-07-21 04:33:31,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:33:31,550 INFO L225 Difference]: With dead ends: 17586 [2022-07-21 04:33:31,551 INFO L226 Difference]: Without dead ends: 12257 [2022-07-21 04:33:31,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2022-07-21 04:33:31,574 INFO L413 NwaCegarLoop]: 873 mSDtfsCounter, 7976 mSDsluCounter, 2835 mSDsCounter, 0 mSdLazyCounter, 8257 mSolverCounterSat, 2919 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7976 SdHoareTripleChecker+Valid, 3708 SdHoareTripleChecker+Invalid, 11176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2919 IncrementalHoareTripleChecker+Valid, 8257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-07-21 04:33:31,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7976 Valid, 3708 Invalid, 11176 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2919 Valid, 8257 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-07-21 04:33:31,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12257 states. [2022-07-21 04:33:32,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12257 to 9591. [2022-07-21 04:33:32,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9591 states, 7470 states have (on average 1.5591700133868809) internal successors, (11647), 7573 states have internal predecessors, (11647), 1566 states have call successors, (1566), 417 states have call predecessors, (1566), 554 states have return successors, (2641), 1655 states have call predecessors, (2641), 1561 states have call successors, (2641) [2022-07-21 04:33:32,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9591 states to 9591 states and 15854 transitions. [2022-07-21 04:33:32,813 INFO L78 Accepts]: Start accepts. Automaton has 9591 states and 15854 transitions. Word has length 126 [2022-07-21 04:33:32,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:33:32,813 INFO L495 AbstractCegarLoop]: Abstraction has 9591 states and 15854 transitions. [2022-07-21 04:33:32,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.1875) internal successors, (99), 12 states have internal predecessors, (99), 7 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (13), 8 states have call predecessors, (13), 7 states have call successors, (13) [2022-07-21 04:33:32,814 INFO L276 IsEmpty]: Start isEmpty. Operand 9591 states and 15854 transitions. [2022-07-21 04:33:32,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-21 04:33:32,817 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:33:32,817 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:33:32,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-21 04:33:32,817 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:33:32,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:33:32,818 INFO L85 PathProgramCache]: Analyzing trace with hash -493451699, now seen corresponding path program 1 times [2022-07-21 04:33:32,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:33:32,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739940556] [2022-07-21 04:33:32,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:33:32,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:33:32,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:32,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:33:32,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:32,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:33:32,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:32,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:33:32,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:33,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:33:33,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:33,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:33:33,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:33,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:33:33,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:33,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:33:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:33,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:33:33,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:33,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:33:33,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:33,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 04:33:33,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:33,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:33:33,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:33,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 04:33:33,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:33,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:33:33,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:33,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:33:33,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:33,414 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 04:33:33,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:33:33,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739940556] [2022-07-21 04:33:33,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739940556] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:33:33,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:33:33,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-07-21 04:33:33,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252015558] [2022-07-21 04:33:33,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:33:33,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-21 04:33:33,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:33:33,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-21 04:33:33,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2022-07-21 04:33:33,417 INFO L87 Difference]: Start difference. First operand 9591 states and 15854 transitions. Second operand has 23 states, 22 states have (on average 4.5) internal successors, (99), 17 states have internal predecessors, (99), 8 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (14), 9 states have call predecessors, (14), 8 states have call successors, (14) [2022-07-21 04:33:55,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:33:55,228 INFO L93 Difference]: Finished difference Result 24540 states and 41486 transitions. [2022-07-21 04:33:55,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-07-21 04:33:55,229 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 4.5) internal successors, (99), 17 states have internal predecessors, (99), 8 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (14), 9 states have call predecessors, (14), 8 states have call successors, (14) Word has length 130 [2022-07-21 04:33:55,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:33:55,291 INFO L225 Difference]: With dead ends: 24540 [2022-07-21 04:33:55,291 INFO L226 Difference]: Without dead ends: 14693 [2022-07-21 04:33:55,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2250 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=1365, Invalid=5945, Unknown=0, NotChecked=0, Total=7310 [2022-07-21 04:33:55,329 INFO L413 NwaCegarLoop]: 1062 mSDtfsCounter, 11444 mSDsluCounter, 6293 mSDsCounter, 0 mSdLazyCounter, 17256 mSolverCounterSat, 3807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11444 SdHoareTripleChecker+Valid, 7355 SdHoareTripleChecker+Invalid, 21063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3807 IncrementalHoareTripleChecker+Valid, 17256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2022-07-21 04:33:55,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11444 Valid, 7355 Invalid, 21063 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3807 Valid, 17256 Invalid, 0 Unknown, 0 Unchecked, 12.7s Time] [2022-07-21 04:33:55,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14693 states. [2022-07-21 04:33:56,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14693 to 12099. [2022-07-21 04:33:56,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12099 states, 9554 states have (on average 1.5569395017793595) internal successors, (14875), 9705 states have internal predecessors, (14875), 1846 states have call successors, (1846), 489 states have call predecessors, (1846), 698 states have return successors, (2977), 1959 states have call predecessors, (2977), 1841 states have call successors, (2977) [2022-07-21 04:33:56,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12099 states to 12099 states and 19698 transitions. [2022-07-21 04:33:56,763 INFO L78 Accepts]: Start accepts. Automaton has 12099 states and 19698 transitions. Word has length 130 [2022-07-21 04:33:56,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:33:56,763 INFO L495 AbstractCegarLoop]: Abstraction has 12099 states and 19698 transitions. [2022-07-21 04:33:56,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 4.5) internal successors, (99), 17 states have internal predecessors, (99), 8 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (14), 9 states have call predecessors, (14), 8 states have call successors, (14) [2022-07-21 04:33:56,763 INFO L276 IsEmpty]: Start isEmpty. Operand 12099 states and 19698 transitions. [2022-07-21 04:33:56,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-21 04:33:56,767 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:33:56,767 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:33:56,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-21 04:33:56,767 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:33:56,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:33:56,768 INFO L85 PathProgramCache]: Analyzing trace with hash -824912493, now seen corresponding path program 1 times [2022-07-21 04:33:56,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:33:56,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467082267] [2022-07-21 04:33:56,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:33:56,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:33:56,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:56,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:33:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:56,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:33:56,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:56,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:33:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:57,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:33:57,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:57,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:33:57,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:57,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:33:57,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:57,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:33:57,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:57,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:33:57,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:57,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:33:57,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:57,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 04:33:57,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:57,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:33:57,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:57,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 04:33:57,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:57,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:33:57,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:57,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 04:33:57,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:33:57,402 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 04:33:57,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:33:57,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467082267] [2022-07-21 04:33:57,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467082267] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:33:57,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:33:57,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-21 04:33:57,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004943918] [2022-07-21 04:33:57,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:33:57,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 04:33:57,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:33:57,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 04:33:57,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-07-21 04:33:57,405 INFO L87 Difference]: Start difference. First operand 12099 states and 19698 transitions. Second operand has 14 states, 14 states have (on average 7.142857142857143) internal successors, (100), 9 states have internal predecessors, (100), 5 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2022-07-21 04:34:14,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:34:14,879 INFO L93 Difference]: Finished difference Result 37507 states and 62763 transitions. [2022-07-21 04:34:14,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-07-21 04:34:14,880 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.142857142857143) internal successors, (100), 9 states have internal predecessors, (100), 5 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) Word has length 131 [2022-07-21 04:34:14,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:34:15,106 INFO L225 Difference]: With dead ends: 37507 [2022-07-21 04:34:15,106 INFO L226 Difference]: Without dead ends: 25489 [2022-07-21 04:34:15,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=725, Invalid=2031, Unknown=0, NotChecked=0, Total=2756 [2022-07-21 04:34:15,145 INFO L413 NwaCegarLoop]: 1773 mSDtfsCounter, 5401 mSDsluCounter, 3249 mSDsCounter, 0 mSdLazyCounter, 10002 mSolverCounterSat, 2750 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5401 SdHoareTripleChecker+Valid, 5022 SdHoareTripleChecker+Invalid, 12752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2750 IncrementalHoareTripleChecker+Valid, 10002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-07-21 04:34:15,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5401 Valid, 5022 Invalid, 12752 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2750 Valid, 10002 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2022-07-21 04:34:15,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25489 states. [2022-07-21 04:34:17,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25489 to 21023. [2022-07-21 04:34:17,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21023 states, 16720 states have (on average 1.560346889952153) internal successors, (26089), 16922 states have internal predecessors, (26089), 3120 states have call successors, (3120), 823 states have call predecessors, (3120), 1182 states have return successors, (4997), 3365 states have call predecessors, (4997), 3115 states have call successors, (4997) [2022-07-21 04:34:17,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21023 states to 21023 states and 34206 transitions. [2022-07-21 04:34:17,694 INFO L78 Accepts]: Start accepts. Automaton has 21023 states and 34206 transitions. Word has length 131 [2022-07-21 04:34:17,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:34:17,694 INFO L495 AbstractCegarLoop]: Abstraction has 21023 states and 34206 transitions. [2022-07-21 04:34:17,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.142857142857143) internal successors, (100), 9 states have internal predecessors, (100), 5 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2022-07-21 04:34:17,694 INFO L276 IsEmpty]: Start isEmpty. Operand 21023 states and 34206 transitions. [2022-07-21 04:34:17,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-21 04:34:17,698 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:34:17,698 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:34:17,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-21 04:34:17,699 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:34:17,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:34:17,699 INFO L85 PathProgramCache]: Analyzing trace with hash 561290901, now seen corresponding path program 1 times [2022-07-21 04:34:17,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:34:17,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268760649] [2022-07-21 04:34:17,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:34:17,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:34:17,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:17,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:34:17,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:17,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:34:17,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:17,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:34:17,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:17,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:34:17,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:18,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:34:18,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:18,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:34:18,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:18,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:34:18,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:18,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:34:18,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:18,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:34:18,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:18,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 04:34:18,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:18,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:34:18,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:18,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 04:34:18,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:18,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:34:18,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:18,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 04:34:18,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:18,258 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 04:34:18,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:34:18,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268760649] [2022-07-21 04:34:18,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268760649] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:34:18,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:34:18,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-21 04:34:18,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873991835] [2022-07-21 04:34:18,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:34:18,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 04:34:18,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:34:18,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 04:34:18,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:34:18,260 INFO L87 Difference]: Start difference. First operand 21023 states and 34206 transitions. Second operand has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 9 states have internal predecessors, (100), 4 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) [2022-07-21 04:34:28,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:34:28,697 INFO L93 Difference]: Finished difference Result 49198 states and 82573 transitions. [2022-07-21 04:34:28,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 04:34:28,698 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 9 states have internal predecessors, (100), 4 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) Word has length 131 [2022-07-21 04:34:28,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:34:28,827 INFO L225 Difference]: With dead ends: 49198 [2022-07-21 04:34:28,828 INFO L226 Difference]: Without dead ends: 28255 [2022-07-21 04:34:28,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=174, Invalid=378, Unknown=0, NotChecked=0, Total=552 [2022-07-21 04:34:28,901 INFO L413 NwaCegarLoop]: 874 mSDtfsCounter, 3444 mSDsluCounter, 1877 mSDsCounter, 0 mSdLazyCounter, 4753 mSolverCounterSat, 1662 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3444 SdHoareTripleChecker+Valid, 2751 SdHoareTripleChecker+Invalid, 6415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1662 IncrementalHoareTripleChecker+Valid, 4753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-07-21 04:34:28,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3444 Valid, 2751 Invalid, 6415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1662 Valid, 4753 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-07-21 04:34:28,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28255 states. [2022-07-21 04:34:31,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28255 to 21119. [2022-07-21 04:34:31,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21119 states, 16816 states have (on average 1.5571479543292104) internal successors, (26185), 17018 states have internal predecessors, (26185), 3120 states have call successors, (3120), 823 states have call predecessors, (3120), 1182 states have return successors, (4997), 3365 states have call predecessors, (4997), 3115 states have call successors, (4997) [2022-07-21 04:34:31,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21119 states to 21119 states and 34302 transitions. [2022-07-21 04:34:31,790 INFO L78 Accepts]: Start accepts. Automaton has 21119 states and 34302 transitions. Word has length 131 [2022-07-21 04:34:31,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:34:31,791 INFO L495 AbstractCegarLoop]: Abstraction has 21119 states and 34302 transitions. [2022-07-21 04:34:31,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 9 states have internal predecessors, (100), 4 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) [2022-07-21 04:34:31,791 INFO L276 IsEmpty]: Start isEmpty. Operand 21119 states and 34302 transitions. [2022-07-21 04:34:31,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 04:34:31,794 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:34:31,794 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:34:31,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-21 04:34:31,795 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:34:31,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:34:31,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1197498161, now seen corresponding path program 1 times [2022-07-21 04:34:31,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:34:31,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246576688] [2022-07-21 04:34:31,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:34:31,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:34:31,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:31,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:34:31,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:31,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:34:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:31,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:34:31,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:32,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:34:32,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:32,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:34:32,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:32,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:34:32,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:32,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:34:32,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:32,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:34:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:32,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:34:32,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:32,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 04:34:32,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:32,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 04:34:32,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:32,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:34:32,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:32,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 04:34:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:32,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:34:32,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:32,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 04:34:32,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:32,431 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 04:34:32,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:34:32,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246576688] [2022-07-21 04:34:32,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246576688] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:34:32,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674469829] [2022-07-21 04:34:32,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:34:32,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:34:32,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:34:32,434 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:34:32,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 04:34:32,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:32,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 04:34:32,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:34:32,923 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 04:34:32,923 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:34:32,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674469829] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:34:32,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:34:32,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [22] total 25 [2022-07-21 04:34:32,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493647943] [2022-07-21 04:34:32,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:34:32,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 04:34:32,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:34:32,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 04:34:32,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2022-07-21 04:34:32,925 INFO L87 Difference]: Start difference. First operand 21119 states and 34302 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-21 04:34:35,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:34:35,674 INFO L93 Difference]: Finished difference Result 21280 states and 34575 transitions. [2022-07-21 04:34:35,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 04:34:35,674 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 134 [2022-07-21 04:34:35,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:34:35,756 INFO L225 Difference]: With dead ends: 21280 [2022-07-21 04:34:35,757 INFO L226 Difference]: Without dead ends: 21265 [2022-07-21 04:34:35,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2022-07-21 04:34:35,778 INFO L413 NwaCegarLoop]: 909 mSDtfsCounter, 872 mSDsluCounter, 1428 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 880 SdHoareTripleChecker+Valid, 2337 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 04:34:35,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [880 Valid, 2337 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 04:34:35,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21265 states. [2022-07-21 04:34:38,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21265 to 21131. [2022-07-21 04:34:38,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21131 states, 16828 states have (on average 1.5567506536724507) internal successors, (26197), 17030 states have internal predecessors, (26197), 3120 states have call successors, (3120), 823 states have call predecessors, (3120), 1182 states have return successors, (4997), 3365 states have call predecessors, (4997), 3115 states have call successors, (4997) [2022-07-21 04:34:38,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21131 states to 21131 states and 34314 transitions. [2022-07-21 04:34:38,635 INFO L78 Accepts]: Start accepts. Automaton has 21131 states and 34314 transitions. Word has length 134 [2022-07-21 04:34:38,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:34:38,635 INFO L495 AbstractCegarLoop]: Abstraction has 21131 states and 34314 transitions. [2022-07-21 04:34:38,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-21 04:34:38,636 INFO L276 IsEmpty]: Start isEmpty. Operand 21131 states and 34314 transitions. [2022-07-21 04:34:38,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-21 04:34:38,640 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:34:38,640 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:34:38,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 04:34:38,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-07-21 04:34:38,859 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:34:38,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:34:38,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1210105868, now seen corresponding path program 1 times [2022-07-21 04:34:38,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:34:38,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815878275] [2022-07-21 04:34:38,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:34:38,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:34:38,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:38,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:34:38,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:38,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:34:38,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:38,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:34:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:39,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:34:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:39,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:34:39,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:39,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:34:39,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:39,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:34:39,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:39,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:34:39,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:39,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:34:39,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:39,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 04:34:39,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:39,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 04:34:39,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:39,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:34:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:39,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 04:34:39,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:39,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:34:39,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:39,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 04:34:39,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:39,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-21 04:34:39,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:34:39,328 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 04:34:39,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:34:39,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815878275] [2022-07-21 04:34:39,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815878275] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:34:39,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:34:39,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-21 04:34:39,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653438932] [2022-07-21 04:34:39,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:34:39,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 04:34:39,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:34:39,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 04:34:39,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-21 04:34:39,331 INFO L87 Difference]: Start difference. First operand 21131 states and 34314 transitions. Second operand has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 7 states have internal predecessors, (103), 5 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-21 04:34:57,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:34:57,731 INFO L93 Difference]: Finished difference Result 61133 states and 105145 transitions. [2022-07-21 04:34:57,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-07-21 04:34:57,732 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 7 states have internal predecessors, (103), 5 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 4 states have call successors, (16) Word has length 140 [2022-07-21 04:34:57,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:34:57,925 INFO L225 Difference]: With dead ends: 61133 [2022-07-21 04:34:57,925 INFO L226 Difference]: Without dead ends: 40088 [2022-07-21 04:34:58,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1210 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=664, Invalid=2996, Unknown=0, NotChecked=0, Total=3660 [2022-07-21 04:34:58,021 INFO L413 NwaCegarLoop]: 1116 mSDtfsCounter, 6183 mSDsluCounter, 2687 mSDsCounter, 0 mSdLazyCounter, 6654 mSolverCounterSat, 2518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6196 SdHoareTripleChecker+Valid, 3803 SdHoareTripleChecker+Invalid, 9172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2518 IncrementalHoareTripleChecker+Valid, 6654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-07-21 04:34:58,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6196 Valid, 3803 Invalid, 9172 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2518 Valid, 6654 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2022-07-21 04:34:58,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40088 states. [2022-07-21 04:35:02,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40088 to 33144. [2022-07-21 04:35:02,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33144 states, 26279 states have (on average 1.542562502378325) internal successors, (40537), 26667 states have internal predecessors, (40537), 4942 states have call successors, (4942), 1375 states have call predecessors, (4942), 1922 states have return successors, (8848), 5277 states have call predecessors, (8848), 4937 states have call successors, (8848) [2022-07-21 04:35:02,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33144 states to 33144 states and 54327 transitions. [2022-07-21 04:35:02,738 INFO L78 Accepts]: Start accepts. Automaton has 33144 states and 54327 transitions. Word has length 140 [2022-07-21 04:35:02,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:35:02,739 INFO L495 AbstractCegarLoop]: Abstraction has 33144 states and 54327 transitions. [2022-07-21 04:35:02,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 7 states have internal predecessors, (103), 5 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-21 04:35:02,739 INFO L276 IsEmpty]: Start isEmpty. Operand 33144 states and 54327 transitions. [2022-07-21 04:35:02,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-07-21 04:35:02,743 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:35:02,743 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:35:02,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-21 04:35:02,744 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:35:02,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:35:02,744 INFO L85 PathProgramCache]: Analyzing trace with hash 358441107, now seen corresponding path program 1 times [2022-07-21 04:35:02,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:35:02,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239567338] [2022-07-21 04:35:02,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:35:02,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:35:02,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:02,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:35:02,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:02,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:35:02,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:02,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:35:02,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:02,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:35:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:02,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:35:03,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:03,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:35:03,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:03,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:35:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:03,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:35:03,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:03,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:35:03,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:03,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 04:35:03,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:03,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 04:35:03,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:03,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:35:03,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:03,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 04:35:03,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:03,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:35:03,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:03,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 04:35:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:03,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 04:35:03,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:03,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 04:35:03,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:03,646 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 04:35:03,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:35:03,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239567338] [2022-07-21 04:35:03,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239567338] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:35:03,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656661882] [2022-07-21 04:35:03,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:35:03,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:35:03,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:35:03,655 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:35:03,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 04:35:03,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:35:03,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 1778 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-21 04:35:03,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:35:04,673 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 04:35:04,673 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:35:04,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656661882] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:35:04,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:35:04,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [22] total 28 [2022-07-21 04:35:04,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712020329] [2022-07-21 04:35:04,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:35:04,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 04:35:04,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:35:04,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 04:35:04,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2022-07-21 04:35:04,675 INFO L87 Difference]: Start difference. First operand 33144 states and 54327 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 5 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17)