./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec1_product21.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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_spec1_product21.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 b57471ff7da280977e3c808cc9c84e84708264492bfd0c5193cf422adb691b70 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 17:20:45,251 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 17:20:45,252 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 17:20:45,277 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 17:20:45,277 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 17:20:45,278 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 17:20:45,279 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 17:20:45,280 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 17:20:45,288 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 17:20:45,289 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 17:20:45,289 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 17:20:45,291 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 17:20:45,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 17:20:45,293 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 17:20:45,296 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 17:20:45,297 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 17:20:45,298 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 17:20:45,301 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 17:20:45,302 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 17:20:45,303 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 17:20:45,304 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 17:20:45,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 17:20:45,308 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 17:20:45,309 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 17:20:45,310 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 17:20:45,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 17:20:45,320 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 17:20:45,320 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 17:20:45,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 17:20:45,322 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 17:20:45,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 17:20:45,323 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 17:20:45,325 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 17:20:45,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 17:20:45,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 17:20:45,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 17:20:45,327 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 17:20:45,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 17:20:45,327 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 17:20:45,327 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 17:20:45,328 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 17:20:45,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 17:20:45,330 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 17:20:45,356 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 17:20:45,357 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 17:20:45,357 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 17:20:45,357 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 17:20:45,358 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 17:20:45,358 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 17:20:45,358 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 17:20:45,358 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 17:20:45,359 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 17:20:45,359 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 17:20:45,359 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 17:20:45,359 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 17:20:45,360 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 17:20:45,360 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 17:20:45,360 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 17:20:45,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 17:20:45,360 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 17:20:45,360 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 17:20:45,360 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 17:20:45,360 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 17:20:45,361 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 17:20:45,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 17:20:45,361 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 17:20:45,361 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 17:20:45,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 17:20:45,361 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 17:20:45,362 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 17:20:45,362 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 17:20:45,362 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 17:20:45,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 17:20:45,362 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 17:20:45,362 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 17:20:45,362 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 17:20:45,363 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b57471ff7da280977e3c808cc9c84e84708264492bfd0c5193cf422adb691b70 [2022-07-13 17:20:45,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 17:20:45,550 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 17:20:45,561 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 17:20:45,562 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 17:20:45,562 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 17:20:45,563 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product21.cil.c [2022-07-13 17:20:45,615 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aae9e5e32/b91379d8729e412e820495cfb05af18b/FLAG49550f977 [2022-07-13 17:20:46,000 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 17:20:46,001 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product21.cil.c [2022-07-13 17:20:46,020 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aae9e5e32/b91379d8729e412e820495cfb05af18b/FLAG49550f977 [2022-07-13 17:20:46,343 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aae9e5e32/b91379d8729e412e820495cfb05af18b [2022-07-13 17:20:46,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 17:20:46,345 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 17:20:46,346 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 17:20:46,346 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 17:20:46,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 17:20:46,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 05:20:46" (1/1) ... [2022-07-13 17:20:46,350 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6be59779 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:20:46, skipping insertion in model container [2022-07-13 17:20:46,350 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 05:20:46" (1/1) ... [2022-07-13 17:20:46,355 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 17:20:46,410 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 17:20:46,762 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_spec1_product21.cil.c[66510,66523] [2022-07-13 17:20:46,768 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 17:20:46,776 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 17:20:46,864 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_spec1_product21.cil.c[66510,66523] [2022-07-13 17:20:46,868 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 17:20:46,884 INFO L208 MainTranslator]: Completed translation [2022-07-13 17:20:46,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:20:46 WrapperNode [2022-07-13 17:20:46,889 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 17:20:46,890 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 17:20:46,890 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 17:20:46,890 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 17:20:46,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:20:46" (1/1) ... [2022-07-13 17:20:46,917 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:20:46" (1/1) ... [2022-07-13 17:20:46,955 INFO L137 Inliner]: procedures = 92, calls = 340, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 850 [2022-07-13 17:20:46,955 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 17:20:46,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 17:20:46,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 17:20:46,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 17:20:46,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:20:46" (1/1) ... [2022-07-13 17:20:46,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:20:46" (1/1) ... [2022-07-13 17:20:46,966 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:20:46" (1/1) ... [2022-07-13 17:20:46,967 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:20:46" (1/1) ... [2022-07-13 17:20:46,979 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:20:46" (1/1) ... [2022-07-13 17:20:46,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:20:46" (1/1) ... [2022-07-13 17:20:46,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:20:46" (1/1) ... [2022-07-13 17:20:47,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 17:20:47,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 17:20:47,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 17:20:47,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 17:20:47,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:20:46" (1/1) ... [2022-07-13 17:20:47,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 17:20:47,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:20:47,061 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) [2022-07-13 17:20:47,065 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 [2022-07-13 17:20:47,110 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-07-13 17:20:47,110 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-07-13 17:20:47,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 17:20:47,111 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-07-13 17:20:47,111 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-07-13 17:20:47,111 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-07-13 17:20:47,111 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-07-13 17:20:47,115 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-13 17:20:47,115 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-13 17:20:47,115 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-13 17:20:47,116 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-13 17:20:47,116 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-13 17:20:47,116 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-13 17:20:47,116 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-13 17:20:47,116 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-13 17:20:47,117 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-13 17:20:47,117 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-13 17:20:47,117 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-07-13 17:20:47,117 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-07-13 17:20:47,117 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-07-13 17:20:47,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-07-13 17:20:47,117 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-13 17:20:47,117 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-13 17:20:47,117 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-13 17:20:47,117 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-13 17:20:47,117 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-13 17:20:47,118 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-13 17:20:47,118 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-07-13 17:20:47,118 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-07-13 17:20:47,118 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-13 17:20:47,118 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-13 17:20:47,118 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-13 17:20:47,118 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-13 17:20:47,118 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-13 17:20:47,118 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-13 17:20:47,118 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-13 17:20:47,118 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-13 17:20:47,118 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-13 17:20:47,119 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-13 17:20:47,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 17:20:47,119 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-07-13 17:20:47,119 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-07-13 17:20:47,119 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-13 17:20:47,119 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-13 17:20:47,119 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-13 17:20:47,120 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-13 17:20:47,120 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-13 17:20:47,120 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-13 17:20:47,120 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2022-07-13 17:20:47,120 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2022-07-13 17:20:47,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 17:20:47,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 17:20:47,120 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-13 17:20:47,121 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-13 17:20:47,220 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 17:20:47,221 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 17:20:47,994 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 17:20:48,008 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 17:20:48,009 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 17:20:48,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 05:20:48 BoogieIcfgContainer [2022-07-13 17:20:48,012 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 17:20:48,014 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 17:20:48,015 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 17:20:48,017 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 17:20:48,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 05:20:46" (1/3) ... [2022-07-13 17:20:48,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14d65196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 05:20:48, skipping insertion in model container [2022-07-13 17:20:48,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:20:46" (2/3) ... [2022-07-13 17:20:48,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14d65196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 05:20:48, skipping insertion in model container [2022-07-13 17:20:48,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 05:20:48" (3/3) ... [2022-07-13 17:20:48,020 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product21.cil.c [2022-07-13 17:20:48,052 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 17:20:48,053 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 17:20:48,112 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 17:20:48,119 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@3dc88efb, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@62025a9a [2022-07-13 17:20:48,119 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 17:20:48,131 INFO L276 IsEmpty]: Start isEmpty. Operand has 570 states, 445 states have (on average 1.6898876404494383) internal successors, (752), 466 states have internal predecessors, (752), 98 states have call successors, (98), 25 states have call predecessors, (98), 25 states have return successors, (98), 92 states have call predecessors, (98), 98 states have call successors, (98) [2022-07-13 17:20:48,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-13 17:20:48,156 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:20:48,157 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 17:20:48,157 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:20:48,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:20:48,162 INFO L85 PathProgramCache]: Analyzing trace with hash 679987401, now seen corresponding path program 1 times [2022-07-13 17:20:48,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:20:48,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205419759] [2022-07-13 17:20:48,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:48,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:20:48,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:48,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:20:48,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:48,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:48,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:48,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:20:48,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:48,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 17:20:48,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:48,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:48,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:48,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:20:48,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:48,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-13 17:20:48,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:48,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:48,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:48,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:20:48,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:48,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:20:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:48,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:20:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:48,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 17:20:48,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:48,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:20:48,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:48,982 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 17:20:48,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:20:48,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205419759] [2022-07-13 17:20:48,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205419759] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:20:48,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740390601] [2022-07-13 17:20:48,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:48,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:20:48,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:20:48,989 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) [2022-07-13 17:20:48,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 17:20:49,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:49,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 1833 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-13 17:20:49,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:20:49,368 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-13 17:20:49,369 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:20:49,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740390601] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:20:49,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:20:49,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 7 [2022-07-13 17:20:49,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528858850] [2022-07-13 17:20:49,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:20:49,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 17:20:49,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:20:49,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 17:20:49,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:20:49,405 INFO L87 Difference]: Start difference. First operand has 570 states, 445 states have (on average 1.6898876404494383) internal successors, (752), 466 states have internal predecessors, (752), 98 states have call successors, (98), 25 states have call predecessors, (98), 25 states have return successors, (98), 92 states have call predecessors, (98), 98 states have call successors, (98) Second operand has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-13 17:20:49,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:20:49,480 INFO L93 Difference]: Finished difference Result 591 states and 978 transitions. [2022-07-13 17:20:49,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 17:20:49,482 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 111 [2022-07-13 17:20:49,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:20:49,495 INFO L225 Difference]: With dead ends: 591 [2022-07-13 17:20:49,495 INFO L226 Difference]: Without dead ends: 562 [2022-07-13 17:20:49,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:20:49,500 INFO L413 NwaCegarLoop]: 939 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:20:49,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:20:49,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2022-07-13 17:20:49,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2022-07-13 17:20:49,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 439 states have (on average 1.6879271070615034) internal successors, (741), 458 states have internal predecessors, (741), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2022-07-13 17:20:49,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 932 transitions. [2022-07-13 17:20:49,556 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 932 transitions. Word has length 111 [2022-07-13 17:20:49,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:20:49,558 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 932 transitions. [2022-07-13 17:20:49,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-13 17:20:49,558 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 932 transitions. [2022-07-13 17:20:49,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-13 17:20:49,562 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:20:49,563 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 17:20:49,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 17:20:49,773 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,SelfDestructingSolverStorable0 [2022-07-13 17:20:49,774 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:20:49,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:20:49,775 INFO L85 PathProgramCache]: Analyzing trace with hash 2144316280, now seen corresponding path program 1 times [2022-07-13 17:20:49,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:20:49,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091258794] [2022-07-13 17:20:49,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:49,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:20:49,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:49,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:20:49,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:49,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:49,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:49,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:20:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:49,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 17:20:49,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:49,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:49,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:49,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:20:49,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:50,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-13 17:20:50,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:50,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:50,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:50,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:20:50,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:50,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:20:50,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:50,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:20:50,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:50,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 17:20:50,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:50,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:20:50,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:50,218 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 17:20:50,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:20:50,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091258794] [2022-07-13 17:20:50,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091258794] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:20:50,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749113464] [2022-07-13 17:20:50,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:50,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:20:50,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:20:50,224 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) [2022-07-13 17:20:50,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 17:20:50,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:50,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 1836 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 17:20:50,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:20:50,531 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-13 17:20:50,531 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:20:50,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749113464] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:20:50,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:20:50,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-13 17:20:50,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565565809] [2022-07-13 17:20:50,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:20:50,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 17:20:50,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:20:50,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 17:20:50,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:20:50,534 INFO L87 Difference]: Start difference. First operand 562 states and 932 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:20:50,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:20:50,584 INFO L93 Difference]: Finished difference Result 1115 states and 1856 transitions. [2022-07-13 17:20:50,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 17:20:50,585 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 113 [2022-07-13 17:20:50,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:20:50,588 INFO L225 Difference]: With dead ends: 1115 [2022-07-13 17:20:50,588 INFO L226 Difference]: Without dead ends: 562 [2022-07-13 17:20:50,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:20:50,593 INFO L413 NwaCegarLoop]: 918 mSDtfsCounter, 14 mSDsluCounter, 1829 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2747 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:20:50,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2747 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:20:50,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2022-07-13 17:20:50,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2022-07-13 17:20:50,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 439 states have (on average 1.6856492027334853) internal successors, (740), 458 states have internal predecessors, (740), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2022-07-13 17:20:50,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 931 transitions. [2022-07-13 17:20:50,639 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 931 transitions. Word has length 113 [2022-07-13 17:20:50,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:20:50,639 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 931 transitions. [2022-07-13 17:20:50,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:20:50,639 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 931 transitions. [2022-07-13 17:20:50,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-13 17:20:50,642 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:20:50,642 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 17:20:50,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 17:20:50,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-07-13 17:20:50,855 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:20:50,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:20:50,855 INFO L85 PathProgramCache]: Analyzing trace with hash 219685296, now seen corresponding path program 1 times [2022-07-13 17:20:50,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:20:50,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723267461] [2022-07-13 17:20:50,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:50,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:20:50,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:50,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:20:51,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:51,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:51,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:51,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:20:51,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:51,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 17:20:51,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:51,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:51,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:51,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:20:51,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:51,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 17:20:51,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:51,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:51,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:51,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:20:51,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:51,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:20:51,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:51,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:20:51,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:51,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 17:20:51,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:51,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:20:51,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:51,225 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 17:20:51,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:20:51,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723267461] [2022-07-13 17:20:51,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723267461] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:20:51,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189678672] [2022-07-13 17:20:51,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:51,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:20:51,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:20:51,240 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:20:51,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 17:20:51,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:51,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 1838 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 17:20:51,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:20:51,553 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-13 17:20:51,553 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:20:51,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189678672] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:20:51,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:20:51,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-13 17:20:51,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297070447] [2022-07-13 17:20:51,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:20:51,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 17:20:51,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:20:51,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 17:20:51,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:20:51,554 INFO L87 Difference]: Start difference. First operand 562 states and 931 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:20:51,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:20:51,602 INFO L93 Difference]: Finished difference Result 1115 states and 1854 transitions. [2022-07-13 17:20:51,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 17:20:51,616 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 115 [2022-07-13 17:20:51,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:20:51,619 INFO L225 Difference]: With dead ends: 1115 [2022-07-13 17:20:51,619 INFO L226 Difference]: Without dead ends: 562 [2022-07-13 17:20:51,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:20:51,621 INFO L413 NwaCegarLoop]: 918 mSDtfsCounter, 12 mSDsluCounter, 1829 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2747 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:20:51,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2747 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:20:51,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2022-07-13 17:20:51,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2022-07-13 17:20:51,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 439 states have (on average 1.683371298405467) internal successors, (739), 458 states have internal predecessors, (739), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2022-07-13 17:20:51,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 930 transitions. [2022-07-13 17:20:51,642 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 930 transitions. Word has length 115 [2022-07-13 17:20:51,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:20:51,643 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 930 transitions. [2022-07-13 17:20:51,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:20:51,643 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 930 transitions. [2022-07-13 17:20:51,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-13 17:20:51,647 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:20:51,647 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 17:20:51,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 17:20:51,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:20:51,864 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:20:51,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:20:51,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1262716040, now seen corresponding path program 1 times [2022-07-13 17:20:51,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:20:51,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427461259] [2022-07-13 17:20:51,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:51,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:20:51,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:51,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:20:51,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:51,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:51,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:51,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:20:51,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:51,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 17:20:51,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:51,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:51,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:51,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:20:51,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:52,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 17:20:52,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:52,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:52,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:52,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:20:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:52,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:20:52,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:52,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:20:52,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:52,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 17:20:52,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:52,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:20:52,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:52,159 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 17:20:52,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:20:52,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427461259] [2022-07-13 17:20:52,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427461259] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:20:52,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923844] [2022-07-13 17:20:52,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:52,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:20:52,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:20:52,161 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:20:52,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 17:20:52,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:52,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 1840 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 17:20:52,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:20:52,460 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-13 17:20:52,461 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:20:52,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923844] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:20:52,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:20:52,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-13 17:20:52,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159077360] [2022-07-13 17:20:52,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:20:52,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 17:20:52,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:20:52,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 17:20:52,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:20:52,463 INFO L87 Difference]: Start difference. First operand 562 states and 930 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:20:52,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:20:52,505 INFO L93 Difference]: Finished difference Result 1122 states and 1861 transitions. [2022-07-13 17:20:52,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 17:20:52,506 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 117 [2022-07-13 17:20:52,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:20:52,509 INFO L225 Difference]: With dead ends: 1122 [2022-07-13 17:20:52,509 INFO L226 Difference]: Without dead ends: 571 [2022-07-13 17:20:52,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:20:52,512 INFO L413 NwaCegarLoop]: 918 mSDtfsCounter, 20 mSDsluCounter, 1829 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2747 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:20:52,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2747 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:20:52,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-07-13 17:20:52,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2022-07-13 17:20:52,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 447 states have (on average 1.680089485458613) internal successors, (751), 466 states have internal predecessors, (751), 98 states have call successors, (98), 26 states have call predecessors, (98), 25 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2022-07-13 17:20:52,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 942 transitions. [2022-07-13 17:20:52,526 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 942 transitions. Word has length 117 [2022-07-13 17:20:52,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:20:52,527 INFO L495 AbstractCegarLoop]: Abstraction has 571 states and 942 transitions. [2022-07-13 17:20:52,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:20:52,527 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 942 transitions. [2022-07-13 17:20:52,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-13 17:20:52,530 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:20:52,530 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 17:20:52,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 17:20:52,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:20:52,750 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:20:52,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:20:52,750 INFO L85 PathProgramCache]: Analyzing trace with hash 559297322, now seen corresponding path program 1 times [2022-07-13 17:20:52,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:20:52,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053217246] [2022-07-13 17:20:52,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:52,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:20:52,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:52,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:20:52,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:52,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:52,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:52,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 17:20:52,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:52,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:20:52,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:52,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:52,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:52,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:20:52,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:53,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 17:20:53,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:53,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:53,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:53,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:20:53,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:53,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:20:53,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:53,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:20:53,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:53,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 17:20:53,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:53,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:20:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:53,094 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 17:20:53,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:20:53,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053217246] [2022-07-13 17:20:53,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053217246] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:20:53,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904898259] [2022-07-13 17:20:53,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:53,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:20:53,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:20:53,096 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:20:53,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 17:20:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:53,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 1841 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 17:20:53,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:20:53,370 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-13 17:20:53,371 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:20:53,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904898259] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:20:53,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:20:53,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-13 17:20:53,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967275409] [2022-07-13 17:20:53,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:20:53,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 17:20:53,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:20:53,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 17:20:53,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:20:53,373 INFO L87 Difference]: Start difference. First operand 571 states and 942 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:20:53,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:20:53,416 INFO L93 Difference]: Finished difference Result 1124 states and 1862 transitions. [2022-07-13 17:20:53,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 17:20:53,417 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 118 [2022-07-13 17:20:53,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:20:53,420 INFO L225 Difference]: With dead ends: 1124 [2022-07-13 17:20:53,420 INFO L226 Difference]: Without dead ends: 571 [2022-07-13 17:20:53,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:20:53,423 INFO L413 NwaCegarLoop]: 918 mSDtfsCounter, 18 mSDsluCounter, 1829 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2747 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:20:53,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2747 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:20:53,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-07-13 17:20:53,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2022-07-13 17:20:53,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 447 states have (on average 1.6778523489932886) internal successors, (750), 466 states have internal predecessors, (750), 98 states have call successors, (98), 26 states have call predecessors, (98), 25 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2022-07-13 17:20:53,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 941 transitions. [2022-07-13 17:20:53,437 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 941 transitions. Word has length 118 [2022-07-13 17:20:53,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:20:53,437 INFO L495 AbstractCegarLoop]: Abstraction has 571 states and 941 transitions. [2022-07-13 17:20:53,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:20:53,438 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 941 transitions. [2022-07-13 17:20:53,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-13 17:20:53,440 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:20:53,440 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 17:20:53,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 17:20:53,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:20:53,656 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:20:53,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:20:53,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1435315900, now seen corresponding path program 1 times [2022-07-13 17:20:53,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:20:53,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838256839] [2022-07-13 17:20:53,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:53,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:20:53,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:53,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:20:53,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:53,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:53,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:53,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 17:20:53,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:53,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 17:20:53,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:53,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:53,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:53,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:20:53,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:53,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-13 17:20:53,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:53,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:53,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:53,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:20:53,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:53,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:20:53,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:53,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:20:53,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:53,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 17:20:53,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:53,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:20:53,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:53,937 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 17:20:53,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:20:53,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838256839] [2022-07-13 17:20:53,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838256839] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:20:53,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670396227] [2022-07-13 17:20:53,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:53,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:20:53,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:20:53,939 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:20:53,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 17:20:54,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:54,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 1842 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 17:20:54,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:20:54,224 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-13 17:20:54,225 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:20:54,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670396227] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:20:54,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:20:54,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-13 17:20:54,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402815808] [2022-07-13 17:20:54,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:20:54,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 17:20:54,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:20:54,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 17:20:54,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:20:54,227 INFO L87 Difference]: Start difference. First operand 571 states and 941 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:20:54,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:20:54,268 INFO L93 Difference]: Finished difference Result 1124 states and 1861 transitions. [2022-07-13 17:20:54,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 17:20:54,269 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 119 [2022-07-13 17:20:54,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:20:54,272 INFO L225 Difference]: With dead ends: 1124 [2022-07-13 17:20:54,272 INFO L226 Difference]: Without dead ends: 571 [2022-07-13 17:20:54,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:20:54,275 INFO L413 NwaCegarLoop]: 918 mSDtfsCounter, 17 mSDsluCounter, 1829 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2747 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:20:54,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2747 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:20:54,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-07-13 17:20:54,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2022-07-13 17:20:54,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 447 states have (on average 1.6756152125279642) internal successors, (749), 466 states have internal predecessors, (749), 98 states have call successors, (98), 26 states have call predecessors, (98), 25 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2022-07-13 17:20:54,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 940 transitions. [2022-07-13 17:20:54,301 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 940 transitions. Word has length 119 [2022-07-13 17:20:54,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:20:54,301 INFO L495 AbstractCegarLoop]: Abstraction has 571 states and 940 transitions. [2022-07-13 17:20:54,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:20:54,302 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 940 transitions. [2022-07-13 17:20:54,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-13 17:20:54,304 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:20:54,305 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 17:20:54,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 17:20:54,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:20:54,525 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:20:54,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:20:54,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1244700050, now seen corresponding path program 1 times [2022-07-13 17:20:54,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:20:54,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081699387] [2022-07-13 17:20:54,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:54,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:20:54,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:54,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:20:54,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:54,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:54,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:54,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:20:54,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:54,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 17:20:54,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:54,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:54,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:54,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:20:54,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:54,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 17:20:54,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:54,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:54,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:54,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:20:54,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:54,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:20:54,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:54,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:20:54,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:54,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 17:20:54,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:54,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:20:54,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:54,845 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-13 17:20:54,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:20:54,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081699387] [2022-07-13 17:20:54,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081699387] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:20:54,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296719793] [2022-07-13 17:20:54,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:54,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:20:54,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:20:54,847 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:20:54,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 17:20:55,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:55,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 1843 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 17:20:55,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:20:55,197 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:20:55,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:20:55,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296719793] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:20:55,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:20:55,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-07-13 17:20:55,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954932482] [2022-07-13 17:20:55,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:20:55,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:20:55,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:20:55,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:20:55,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-13 17:20:55,199 INFO L87 Difference]: Start difference. First operand 571 states and 940 transitions. Second operand has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-13 17:20:55,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:20:55,308 INFO L93 Difference]: Finished difference Result 1143 states and 1891 transitions. [2022-07-13 17:20:55,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 17:20:55,309 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 120 [2022-07-13 17:20:55,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:20:55,312 INFO L225 Difference]: With dead ends: 1143 [2022-07-13 17:20:55,312 INFO L226 Difference]: Without dead ends: 594 [2022-07-13 17:20:55,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:20:55,315 INFO L413 NwaCegarLoop]: 919 mSDtfsCounter, 148 mSDsluCounter, 4482 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 5401 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:20:55,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 5401 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 17:20:55,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2022-07-13 17:20:55,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 590. [2022-07-13 17:20:55,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 463 states have (on average 1.673866090712743) internal successors, (775), 484 states have internal predecessors, (775), 99 states have call successors, (99), 26 states have call predecessors, (99), 27 states have return successors, (97), 92 states have call predecessors, (97), 94 states have call successors, (97) [2022-07-13 17:20:55,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 971 transitions. [2022-07-13 17:20:55,331 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 971 transitions. Word has length 120 [2022-07-13 17:20:55,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:20:55,331 INFO L495 AbstractCegarLoop]: Abstraction has 590 states and 971 transitions. [2022-07-13 17:20:55,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-13 17:20:55,331 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 971 transitions. [2022-07-13 17:20:55,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-13 17:20:55,334 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:20:55,334 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 17:20:55,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-13 17:20:55,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:20:55,555 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:20:55,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:20:55,555 INFO L85 PathProgramCache]: Analyzing trace with hash -113913425, now seen corresponding path program 1 times [2022-07-13 17:20:55,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:20:55,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244565734] [2022-07-13 17:20:55,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:55,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:20:55,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:55,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:20:55,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:55,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:55,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:55,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:20:55,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:55,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 17:20:55,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:55,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:55,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:55,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:20:55,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:55,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 17:20:55,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:55,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:55,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:55,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:20:55,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:55,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:20:55,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:55,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:20:55,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:55,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 17:20:55,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:55,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:20:55,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:55,839 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-13 17:20:55,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:20:55,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244565734] [2022-07-13 17:20:55,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244565734] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:20:55,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320783743] [2022-07-13 17:20:55,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:55,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:20:55,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:20:55,841 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:20:55,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-13 17:20:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:56,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 1842 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 17:20:56,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:20:56,148 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:20:56,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:20:56,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320783743] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:20:56,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:20:56,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-13 17:20:56,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553192946] [2022-07-13 17:20:56,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:20:56,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 17:20:56,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:20:56,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 17:20:56,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:20:56,152 INFO L87 Difference]: Start difference. First operand 590 states and 971 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:20:56,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:20:56,242 INFO L93 Difference]: Finished difference Result 1184 states and 1965 transitions. [2022-07-13 17:20:56,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 17:20:56,242 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 120 [2022-07-13 17:20:56,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:20:56,247 INFO L225 Difference]: With dead ends: 1184 [2022-07-13 17:20:56,248 INFO L226 Difference]: Without dead ends: 590 [2022-07-13 17:20:56,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:20:56,251 INFO L413 NwaCegarLoop]: 868 mSDtfsCounter, 135 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 2564 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:20:56,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 2564 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 17:20:56,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2022-07-13 17:20:56,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 590. [2022-07-13 17:20:56,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 463 states have (on average 1.6630669546436285) internal successors, (770), 484 states have internal predecessors, (770), 99 states have call successors, (99), 26 states have call predecessors, (99), 27 states have return successors, (97), 92 states have call predecessors, (97), 94 states have call successors, (97) [2022-07-13 17:20:56,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 966 transitions. [2022-07-13 17:20:56,266 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 966 transitions. Word has length 120 [2022-07-13 17:20:56,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:20:56,266 INFO L495 AbstractCegarLoop]: Abstraction has 590 states and 966 transitions. [2022-07-13 17:20:56,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:20:56,267 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 966 transitions. [2022-07-13 17:20:56,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-13 17:20:56,271 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:20:56,271 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 17:20:56,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-13 17:20:56,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-13 17:20:56,485 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:20:56,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:20:56,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1355283163, now seen corresponding path program 1 times [2022-07-13 17:20:56,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:20:56,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571308931] [2022-07-13 17:20:56,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:56,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:20:56,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:56,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:20:56,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:56,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:56,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:56,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:20:56,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:56,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 17:20:56,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:56,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:56,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:56,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:20:56,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:56,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 17:20:56,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:56,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:56,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:56,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:20:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:56,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:20:56,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:56,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:20:56,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:56,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 17:20:56,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:56,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:20:56,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:56,779 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-13 17:20:56,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:20:56,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571308931] [2022-07-13 17:20:56,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571308931] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:20:56,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446352501] [2022-07-13 17:20:56,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:56,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:20:56,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:20:56,780 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:20:56,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-13 17:20:57,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:57,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 1844 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 17:20:57,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:20:57,138 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:20:57,138 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:20:57,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446352501] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:20:57,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:20:57,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-13 17:20:57,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537498890] [2022-07-13 17:20:57,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:20:57,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 17:20:57,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:20:57,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 17:20:57,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:20:57,140 INFO L87 Difference]: Start difference. First operand 590 states and 966 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:20:57,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:20:57,232 INFO L93 Difference]: Finished difference Result 1184 states and 1955 transitions. [2022-07-13 17:20:57,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 17:20:57,232 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 122 [2022-07-13 17:20:57,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:20:57,235 INFO L225 Difference]: With dead ends: 1184 [2022-07-13 17:20:57,236 INFO L226 Difference]: Without dead ends: 590 [2022-07-13 17:20:57,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:20:57,239 INFO L413 NwaCegarLoop]: 868 mSDtfsCounter, 129 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 2564 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:20:57,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 2564 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 17:20:57,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2022-07-13 17:20:57,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 590. [2022-07-13 17:20:57,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 463 states have (on average 1.652267818574514) internal successors, (765), 484 states have internal predecessors, (765), 99 states have call successors, (99), 26 states have call predecessors, (99), 27 states have return successors, (97), 92 states have call predecessors, (97), 94 states have call successors, (97) [2022-07-13 17:20:57,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 961 transitions. [2022-07-13 17:20:57,253 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 961 transitions. Word has length 122 [2022-07-13 17:20:57,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:20:57,253 INFO L495 AbstractCegarLoop]: Abstraction has 590 states and 961 transitions. [2022-07-13 17:20:57,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:20:57,254 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 961 transitions. [2022-07-13 17:20:57,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-13 17:20:57,256 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:20:57,256 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 17:20:57,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-13 17:20:57,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:20:57,471 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:20:57,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:20:57,472 INFO L85 PathProgramCache]: Analyzing trace with hash -445953777, now seen corresponding path program 1 times [2022-07-13 17:20:57,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:20:57,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040336909] [2022-07-13 17:20:57,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:57,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:20:57,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:57,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:20:57,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:57,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:57,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:57,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:20:57,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:57,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:20:57,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:57,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:57,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:57,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:20:57,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:57,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-13 17:20:57,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:57,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:57,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:57,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:20:57,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:57,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:20:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:57,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:20:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:57,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 17:20:57,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:57,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:20:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:57,783 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-13 17:20:57,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:20:57,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040336909] [2022-07-13 17:20:57,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040336909] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:20:57,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012845068] [2022-07-13 17:20:57,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:57,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:20:57,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:20:57,785 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:20:57,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-13 17:20:58,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:58,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 1846 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 17:20:58,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:20:58,096 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:20:58,097 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:20:58,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012845068] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:20:58,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:20:58,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-13 17:20:58,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481473580] [2022-07-13 17:20:58,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:20:58,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 17:20:58,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:20:58,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 17:20:58,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:20:58,099 INFO L87 Difference]: Start difference. First operand 590 states and 961 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:20:58,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:20:58,207 INFO L93 Difference]: Finished difference Result 1220 states and 2003 transitions. [2022-07-13 17:20:58,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 17:20:58,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2022-07-13 17:20:58,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:20:58,211 INFO L225 Difference]: With dead ends: 1220 [2022-07-13 17:20:58,211 INFO L226 Difference]: Without dead ends: 656 [2022-07-13 17:20:58,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:20:58,214 INFO L413 NwaCegarLoop]: 878 mSDtfsCounter, 179 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 2574 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:20:58,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 2574 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 17:20:58,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2022-07-13 17:20:58,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 641. [2022-07-13 17:20:58,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 513 states have (on average 1.6569200779727096) internal successors, (850), 534 states have internal predecessors, (850), 99 states have call successors, (99), 27 states have call predecessors, (99), 28 states have return successors, (96), 92 states have call predecessors, (96), 94 states have call successors, (96) [2022-07-13 17:20:58,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1045 transitions. [2022-07-13 17:20:58,233 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1045 transitions. Word has length 124 [2022-07-13 17:20:58,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:20:58,234 INFO L495 AbstractCegarLoop]: Abstraction has 641 states and 1045 transitions. [2022-07-13 17:20:58,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:20:58,234 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1045 transitions. [2022-07-13 17:20:58,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-13 17:20:58,237 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:20:58,237 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 17:20:58,271 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-07-13 17:20:58,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-13 17:20:58,475 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:20:58,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:20:58,475 INFO L85 PathProgramCache]: Analyzing trace with hash -734352333, now seen corresponding path program 1 times [2022-07-13 17:20:58,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:20:58,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432953986] [2022-07-13 17:20:58,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:58,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:20:58,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:58,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:20:58,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:58,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:58,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:58,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:20:58,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:58,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:20:58,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:58,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:58,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:58,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:20:58,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:58,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 17:20:58,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:58,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:58,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:58,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:20:58,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:58,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:20:58,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:58,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:20:58,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:58,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 17:20:58,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:58,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:20:58,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:58,819 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-13 17:20:58,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:20:58,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432953986] [2022-07-13 17:20:58,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432953986] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:20:58,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796138655] [2022-07-13 17:20:58,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:58,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:20:58,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:20:58,821 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:20:58,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-13 17:20:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:59,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 1844 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 17:20:59,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:20:59,185 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:20:59,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:20:59,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796138655] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:20:59,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:20:59,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2022-07-13 17:20:59,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622880684] [2022-07-13 17:20:59,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:20:59,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 17:20:59,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:20:59,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 17:20:59,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:20:59,186 INFO L87 Difference]: Start difference. First operand 641 states and 1045 transitions. Second operand has 8 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-13 17:20:59,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:20:59,315 INFO L93 Difference]: Finished difference Result 1212 states and 1983 transitions. [2022-07-13 17:20:59,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:20:59,316 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 125 [2022-07-13 17:20:59,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:20:59,319 INFO L225 Difference]: With dead ends: 1212 [2022-07-13 17:20:59,320 INFO L226 Difference]: Without dead ends: 663 [2022-07-13 17:20:59,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-07-13 17:20:59,322 INFO L413 NwaCegarLoop]: 899 mSDtfsCounter, 177 mSDsluCounter, 5287 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 6186 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:20:59,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 6186 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 17:20:59,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2022-07-13 17:20:59,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 641. [2022-07-13 17:20:59,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 513 states have (on average 1.6569200779727096) internal successors, (850), 534 states have internal predecessors, (850), 99 states have call successors, (99), 27 states have call predecessors, (99), 28 states have return successors, (96), 92 states have call predecessors, (96), 94 states have call successors, (96) [2022-07-13 17:20:59,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1045 transitions. [2022-07-13 17:20:59,338 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1045 transitions. Word has length 125 [2022-07-13 17:20:59,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:20:59,339 INFO L495 AbstractCegarLoop]: Abstraction has 641 states and 1045 transitions. [2022-07-13 17:20:59,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-13 17:20:59,339 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1045 transitions. [2022-07-13 17:20:59,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-13 17:20:59,341 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:20:59,342 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 17:20:59,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-13 17:20:59,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-13 17:20:59,559 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:20:59,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:20:59,560 INFO L85 PathProgramCache]: Analyzing trace with hash 808708435, now seen corresponding path program 1 times [2022-07-13 17:20:59,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:20:59,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752892604] [2022-07-13 17:20:59,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:59,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:20:59,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:59,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:20:59,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:59,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:59,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:59,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:20:59,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:59,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:20:59,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:59,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:59,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:59,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:20:59,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:59,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 17:20:59,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:59,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:20:59,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:59,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:20:59,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:59,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:20:59,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:59,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:20:59,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:59,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 17:20:59,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:59,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:20:59,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:20:59,860 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-13 17:20:59,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:20:59,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752892604] [2022-07-13 17:20:59,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752892604] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:20:59,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313100164] [2022-07-13 17:20:59,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:20:59,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:20:59,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:20:59,862 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:20:59,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-13 17:21:00,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:00,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 1847 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 17:21:00,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:21:00,185 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:21:00,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:21:00,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313100164] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:21:00,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:21:00,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-13 17:21:00,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567199376] [2022-07-13 17:21:00,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:21:00,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 17:21:00,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:21:00,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 17:21:00,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:21:00,188 INFO L87 Difference]: Start difference. First operand 641 states and 1045 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:21:00,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:21:00,310 INFO L93 Difference]: Finished difference Result 1220 states and 2001 transitions. [2022-07-13 17:21:00,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 17:21:00,312 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2022-07-13 17:21:00,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:21:00,315 INFO L225 Difference]: With dead ends: 1220 [2022-07-13 17:21:00,315 INFO L226 Difference]: Without dead ends: 641 [2022-07-13 17:21:00,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:21:00,319 INFO L413 NwaCegarLoop]: 878 mSDtfsCounter, 173 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 2574 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:21:00,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 2574 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 17:21:00,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2022-07-13 17:21:00,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 641. [2022-07-13 17:21:00,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 513 states have (on average 1.6471734892787524) internal successors, (845), 534 states have internal predecessors, (845), 99 states have call successors, (99), 27 states have call predecessors, (99), 28 states have return successors, (96), 92 states have call predecessors, (96), 94 states have call successors, (96) [2022-07-13 17:21:00,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1040 transitions. [2022-07-13 17:21:00,340 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1040 transitions. Word has length 125 [2022-07-13 17:21:00,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:21:00,340 INFO L495 AbstractCegarLoop]: Abstraction has 641 states and 1040 transitions. [2022-07-13 17:21:00,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:21:00,340 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1040 transitions. [2022-07-13 17:21:00,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-13 17:21:00,343 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:21:00,343 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 17:21:00,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-13 17:21:00,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-13 17:21:00,562 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:21:00,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:21:00,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1720935022, now seen corresponding path program 1 times [2022-07-13 17:21:00,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:21:00,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012095415] [2022-07-13 17:21:00,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:00,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:21:00,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:00,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:00,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:00,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:00,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:00,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:00,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:21:00,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:00,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:00,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:00,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:21:00,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:00,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 17:21:00,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:00,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:00,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:00,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:21:00,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:00,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:21:00,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:00,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:21:00,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:00,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 17:21:00,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:00,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:21:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:00,910 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 17:21:00,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:21:00,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012095415] [2022-07-13 17:21:00,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012095415] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:21:00,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838148925] [2022-07-13 17:21:00,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:00,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:21:00,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:21:00,912 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:21:00,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-13 17:21:01,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:01,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 1843 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 17:21:01,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:21:01,232 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 17:21:01,232 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:21:01,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838148925] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:21:01,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:21:01,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2022-07-13 17:21:01,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107824809] [2022-07-13 17:21:01,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:21:01,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:21:01,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:21:01,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:21:01,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-07-13 17:21:01,233 INFO L87 Difference]: Start difference. First operand 641 states and 1040 transitions. Second operand has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-13 17:21:01,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:21:01,325 INFO L93 Difference]: Finished difference Result 1147 states and 1875 transitions. [2022-07-13 17:21:01,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 17:21:01,326 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 125 [2022-07-13 17:21:01,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:21:01,328 INFO L225 Difference]: With dead ends: 1147 [2022-07-13 17:21:01,328 INFO L226 Difference]: Without dead ends: 665 [2022-07-13 17:21:01,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-07-13 17:21:01,331 INFO L413 NwaCegarLoop]: 911 mSDtfsCounter, 134 mSDsluCounter, 4449 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 5360 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:21:01,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 5360 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 17:21:01,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2022-07-13 17:21:01,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 660. [2022-07-13 17:21:01,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 529 states have (on average 1.6465028355387523) internal successors, (871), 552 states have internal predecessors, (871), 100 states have call successors, (100), 27 states have call predecessors, (100), 30 states have return successors, (99), 93 states have call predecessors, (99), 95 states have call successors, (99) [2022-07-13 17:21:01,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 1070 transitions. [2022-07-13 17:21:01,344 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 1070 transitions. Word has length 125 [2022-07-13 17:21:01,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:21:01,344 INFO L495 AbstractCegarLoop]: Abstraction has 660 states and 1070 transitions. [2022-07-13 17:21:01,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-13 17:21:01,345 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 1070 transitions. [2022-07-13 17:21:01,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-13 17:21:01,347 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:21:01,347 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 17:21:01,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-13 17:21:01,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-13 17:21:01,563 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:21:01,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:21:01,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1643912305, now seen corresponding path program 1 times [2022-07-13 17:21:01,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:21:01,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034832872] [2022-07-13 17:21:01,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:01,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:21:01,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:01,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:01,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:01,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:01,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:01,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:01,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:01,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:21:01,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:01,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:01,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:01,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:21:01,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:01,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 17:21:01,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:01,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:01,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:01,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:21:01,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:01,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:21:01,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:01,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:21:01,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:01,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 17:21:01,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:01,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:21:01,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:01,890 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 17:21:01,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:21:01,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034832872] [2022-07-13 17:21:01,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034832872] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:21:01,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181641136] [2022-07-13 17:21:01,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:01,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:21:01,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:21:01,907 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:21:01,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-13 17:21:02,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:02,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 1844 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 17:21:02,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:21:02,210 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 17:21:02,210 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:21:02,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181641136] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:21:02,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:21:02,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2022-07-13 17:21:02,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434678663] [2022-07-13 17:21:02,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:21:02,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:21:02,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:21:02,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:21:02,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-07-13 17:21:02,211 INFO L87 Difference]: Start difference. First operand 660 states and 1070 transitions. Second operand has 7 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-13 17:21:02,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:21:02,293 INFO L93 Difference]: Finished difference Result 1177 states and 1926 transitions. [2022-07-13 17:21:02,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 17:21:02,293 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 126 [2022-07-13 17:21:02,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:21:02,296 INFO L225 Difference]: With dead ends: 1177 [2022-07-13 17:21:02,297 INFO L226 Difference]: Without dead ends: 695 [2022-07-13 17:21:02,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-07-13 17:21:02,299 INFO L413 NwaCegarLoop]: 911 mSDtfsCounter, 143 mSDsluCounter, 4439 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 5350 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:21:02,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 5350 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 17:21:02,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2022-07-13 17:21:02,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 660. [2022-07-13 17:21:02,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 529 states have (on average 1.6465028355387523) internal successors, (871), 552 states have internal predecessors, (871), 100 states have call successors, (100), 27 states have call predecessors, (100), 30 states have return successors, (99), 93 states have call predecessors, (99), 95 states have call successors, (99) [2022-07-13 17:21:02,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 1070 transitions. [2022-07-13 17:21:02,314 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 1070 transitions. Word has length 126 [2022-07-13 17:21:02,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:21:02,314 INFO L495 AbstractCegarLoop]: Abstraction has 660 states and 1070 transitions. [2022-07-13 17:21:02,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-13 17:21:02,315 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 1070 transitions. [2022-07-13 17:21:02,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-13 17:21:02,317 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:21:02,317 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 17:21:02,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-13 17:21:02,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:21:02,531 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:21:02,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:21:02,532 INFO L85 PathProgramCache]: Analyzing trace with hash 677615857, now seen corresponding path program 1 times [2022-07-13 17:21:02,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:21:02,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772292589] [2022-07-13 17:21:02,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:02,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:21:02,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:02,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:02,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:02,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:02,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:02,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:02,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:02,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:21:02,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:02,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:02,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:02,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:21:02,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:02,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 17:21:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:02,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:02,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:02,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:21:02,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:02,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:21:02,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:02,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:21:02,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:02,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 17:21:02,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:02,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:21:02,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:02,870 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 17:21:02,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:21:02,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772292589] [2022-07-13 17:21:02,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772292589] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:21:02,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991424256] [2022-07-13 17:21:02,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:02,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:21:02,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:21:02,873 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:21:02,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-13 17:21:03,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:03,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 1840 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 17:21:03,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:21:03,212 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 17:21:03,212 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:21:03,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991424256] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:21:03,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:21:03,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-07-13 17:21:03,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302544502] [2022-07-13 17:21:03,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:21:03,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 17:21:03,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:21:03,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 17:21:03,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2022-07-13 17:21:03,213 INFO L87 Difference]: Start difference. First operand 660 states and 1070 transitions. Second operand has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-13 17:21:03,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:21:03,334 INFO L93 Difference]: Finished difference Result 1162 states and 1900 transitions. [2022-07-13 17:21:03,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:21:03,335 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 126 [2022-07-13 17:21:03,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:21:03,338 INFO L225 Difference]: With dead ends: 1162 [2022-07-13 17:21:03,338 INFO L226 Difference]: Without dead ends: 680 [2022-07-13 17:21:03,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-07-13 17:21:03,341 INFO L413 NwaCegarLoop]: 901 mSDtfsCounter, 177 mSDsluCounter, 5293 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 6194 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:21:03,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 6194 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 17:21:03,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2022-07-13 17:21:03,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 660. [2022-07-13 17:21:03,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 529 states have (on average 1.6465028355387523) internal successors, (871), 552 states have internal predecessors, (871), 100 states have call successors, (100), 27 states have call predecessors, (100), 30 states have return successors, (99), 93 states have call predecessors, (99), 95 states have call successors, (99) [2022-07-13 17:21:03,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 1070 transitions. [2022-07-13 17:21:03,356 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 1070 transitions. Word has length 126 [2022-07-13 17:21:03,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:21:03,357 INFO L495 AbstractCegarLoop]: Abstraction has 660 states and 1070 transitions. [2022-07-13 17:21:03,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-13 17:21:03,357 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 1070 transitions. [2022-07-13 17:21:03,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-13 17:21:03,359 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:21:03,359 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 17:21:03,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-13 17:21:03,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-13 17:21:03,578 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:21:03,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:21:03,579 INFO L85 PathProgramCache]: Analyzing trace with hash -596460886, now seen corresponding path program 1 times [2022-07-13 17:21:03,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:21:03,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318095683] [2022-07-13 17:21:03,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:03,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:21:03,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:03,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:03,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:03,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:03,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:03,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:21:03,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:03,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:03,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 17:21:03,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:03,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 17:21:03,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:03,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:03,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:03,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:21:03,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:03,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:21:03,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:03,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:21:03,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:03,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 17:21:03,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:03,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:21:03,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:03,889 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-13 17:21:03,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:21:03,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318095683] [2022-07-13 17:21:03,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318095683] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:21:03,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315357994] [2022-07-13 17:21:03,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:03,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:21:03,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:21:03,891 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:21:03,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-13 17:21:04,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:04,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 1844 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 17:21:04,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:21:04,154 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 17:21:04,155 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:21:04,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315357994] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:21:04,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:21:04,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2022-07-13 17:21:04,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337068727] [2022-07-13 17:21:04,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:21:04,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 17:21:04,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:21:04,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 17:21:04,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-13 17:21:04,157 INFO L87 Difference]: Start difference. First operand 660 states and 1070 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:21:04,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:21:04,196 INFO L93 Difference]: Finished difference Result 1214 states and 1985 transitions. [2022-07-13 17:21:04,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 17:21:04,197 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 126 [2022-07-13 17:21:04,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:21:04,200 INFO L225 Difference]: With dead ends: 1214 [2022-07-13 17:21:04,200 INFO L226 Difference]: Without dead ends: 660 [2022-07-13 17:21:04,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:21:04,202 INFO L413 NwaCegarLoop]: 907 mSDtfsCounter, 23 mSDsluCounter, 1809 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2716 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:21:04,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2716 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:21:04,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2022-07-13 17:21:04,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 660. [2022-07-13 17:21:04,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 529 states have (on average 1.6389413988657846) internal successors, (867), 552 states have internal predecessors, (867), 100 states have call successors, (100), 27 states have call predecessors, (100), 30 states have return successors, (99), 93 states have call predecessors, (99), 95 states have call successors, (99) [2022-07-13 17:21:04,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 1066 transitions. [2022-07-13 17:21:04,220 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 1066 transitions. Word has length 126 [2022-07-13 17:21:04,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:21:04,220 INFO L495 AbstractCegarLoop]: Abstraction has 660 states and 1066 transitions. [2022-07-13 17:21:04,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:21:04,221 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 1066 transitions. [2022-07-13 17:21:04,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-13 17:21:04,223 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:21:04,223 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 17:21:04,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-13 17:21:04,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-13 17:21:04,442 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:21:04,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:21:04,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1996876662, now seen corresponding path program 1 times [2022-07-13 17:21:04,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:21:04,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836952146] [2022-07-13 17:21:04,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:04,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:21:04,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:04,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:04,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:04,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:04,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:04,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:04,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:04,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:21:04,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:04,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:04,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:04,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:21:04,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:04,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 17:21:04,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:04,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:04,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:04,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:21:04,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:04,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:21:04,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:04,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:21:04,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:04,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 17:21:04,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:04,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:21:04,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:04,752 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-13 17:21:04,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:21:04,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836952146] [2022-07-13 17:21:04,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836952146] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:21:04,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349648942] [2022-07-13 17:21:04,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:04,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:21:04,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:21:04,754 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:21:04,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-13 17:21:04,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:04,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 1841 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 17:21:04,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:21:05,057 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 17:21:05,058 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:21:05,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349648942] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:21:05,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:21:05,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-07-13 17:21:05,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379931238] [2022-07-13 17:21:05,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:21:05,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 17:21:05,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:21:05,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 17:21:05,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2022-07-13 17:21:05,059 INFO L87 Difference]: Start difference. First operand 660 states and 1066 transitions. Second operand has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-13 17:21:05,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:21:05,189 INFO L93 Difference]: Finished difference Result 1162 states and 1897 transitions. [2022-07-13 17:21:05,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:21:05,190 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 127 [2022-07-13 17:21:05,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:21:05,192 INFO L225 Difference]: With dead ends: 1162 [2022-07-13 17:21:05,192 INFO L226 Difference]: Without dead ends: 680 [2022-07-13 17:21:05,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-07-13 17:21:05,195 INFO L413 NwaCegarLoop]: 895 mSDtfsCounter, 185 mSDsluCounter, 5256 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 6151 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:21:05,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 6151 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 17:21:05,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2022-07-13 17:21:05,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 660. [2022-07-13 17:21:05,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 529 states have (on average 1.6389413988657846) internal successors, (867), 552 states have internal predecessors, (867), 100 states have call successors, (100), 27 states have call predecessors, (100), 30 states have return successors, (99), 93 states have call predecessors, (99), 95 states have call successors, (99) [2022-07-13 17:21:05,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 1066 transitions. [2022-07-13 17:21:05,209 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 1066 transitions. Word has length 127 [2022-07-13 17:21:05,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:21:05,209 INFO L495 AbstractCegarLoop]: Abstraction has 660 states and 1066 transitions. [2022-07-13 17:21:05,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-13 17:21:05,209 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 1066 transitions. [2022-07-13 17:21:05,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-13 17:21:05,211 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:21:05,211 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 17:21:05,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-13 17:21:05,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-13 17:21:05,424 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:21:05,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:21:05,425 INFO L85 PathProgramCache]: Analyzing trace with hash -238364266, now seen corresponding path program 1 times [2022-07-13 17:21:05,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:21:05,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470540473] [2022-07-13 17:21:05,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:05,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:21:05,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:05,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:05,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:05,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:05,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:05,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:05,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:05,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:21:05,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:05,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:05,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:05,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:21:05,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:05,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 17:21:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:05,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:05,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:05,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:21:05,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:05,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:21:05,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:05,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:21:05,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:05,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 17:21:05,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:05,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:21:05,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:05,730 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-13 17:21:05,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:21:05,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470540473] [2022-07-13 17:21:05,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470540473] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:21:05,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801718723] [2022-07-13 17:21:05,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:05,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:21:05,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:21:05,731 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:21:05,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-13 17:21:05,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:05,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 1842 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 17:21:05,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:21:06,022 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-13 17:21:06,023 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:21:06,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801718723] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:21:06,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:21:06,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2022-07-13 17:21:06,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773876108] [2022-07-13 17:21:06,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:21:06,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 17:21:06,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:21:06,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 17:21:06,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-13 17:21:06,024 INFO L87 Difference]: Start difference. First operand 660 states and 1066 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:21:06,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:21:06,061 INFO L93 Difference]: Finished difference Result 1270 states and 2067 transitions. [2022-07-13 17:21:06,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 17:21:06,061 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 128 [2022-07-13 17:21:06,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:21:06,064 INFO L225 Difference]: With dead ends: 1270 [2022-07-13 17:21:06,064 INFO L226 Difference]: Without dead ends: 696 [2022-07-13 17:21:06,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:21:06,066 INFO L413 NwaCegarLoop]: 899 mSDtfsCounter, 38 mSDsluCounter, 1793 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 2692 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:21:06,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 2692 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:21:06,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2022-07-13 17:21:06,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 684. [2022-07-13 17:21:06,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 553 states have (on average 1.6184448462929475) internal successors, (895), 576 states have internal predecessors, (895), 100 states have call successors, (100), 27 states have call predecessors, (100), 30 states have return successors, (99), 93 states have call predecessors, (99), 95 states have call successors, (99) [2022-07-13 17:21:06,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1094 transitions. [2022-07-13 17:21:06,083 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1094 transitions. Word has length 128 [2022-07-13 17:21:06,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:21:06,083 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 1094 transitions. [2022-07-13 17:21:06,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:21:06,083 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1094 transitions. [2022-07-13 17:21:06,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-13 17:21:06,087 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:21:06,087 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 17:21:06,106 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-07-13 17:21:06,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-13 17:21:06,305 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:21:06,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:21:06,305 INFO L85 PathProgramCache]: Analyzing trace with hash -699426363, now seen corresponding path program 1 times [2022-07-13 17:21:06,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:21:06,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050606793] [2022-07-13 17:21:06,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:06,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:21:06,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:06,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:06,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:06,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:06,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:06,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:06,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:06,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:21:06,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:06,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:06,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:06,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:06,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:06,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 17:21:06,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:06,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:06,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:06,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:21:06,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:06,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 17:21:06,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:06,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:21:06,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:06,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 17:21:06,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:06,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:21:06,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:06,610 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-13 17:21:06,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:21:06,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050606793] [2022-07-13 17:21:06,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050606793] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:21:06,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278043667] [2022-07-13 17:21:06,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:06,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:21:06,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:21:06,612 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:21:06,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-13 17:21:06,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:06,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 1845 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 17:21:06,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:21:06,888 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 17:21:06,889 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:21:06,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278043667] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:21:06,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:21:06,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2022-07-13 17:21:06,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825173659] [2022-07-13 17:21:06,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:21:06,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 17:21:06,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:21:06,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 17:21:06,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:21:06,892 INFO L87 Difference]: Start difference. First operand 684 states and 1094 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:21:07,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:21:07,042 INFO L93 Difference]: Finished difference Result 1282 states and 2099 transitions. [2022-07-13 17:21:07,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 17:21:07,042 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 128 [2022-07-13 17:21:07,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:21:07,046 INFO L225 Difference]: With dead ends: 1282 [2022-07-13 17:21:07,046 INFO L226 Difference]: Without dead ends: 805 [2022-07-13 17:21:07,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-07-13 17:21:07,048 INFO L413 NwaCegarLoop]: 1011 mSDtfsCounter, 324 mSDsluCounter, 2764 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 3775 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:21:07,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 3775 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 17:21:07,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2022-07-13 17:21:07,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 687. [2022-07-13 17:21:07,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 556 states have (on average 1.6151079136690647) internal successors, (898), 579 states have internal predecessors, (898), 100 states have call successors, (100), 27 states have call predecessors, (100), 30 states have return successors, (99), 93 states have call predecessors, (99), 95 states have call successors, (99) [2022-07-13 17:21:07,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1097 transitions. [2022-07-13 17:21:07,066 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1097 transitions. Word has length 128 [2022-07-13 17:21:07,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:21:07,067 INFO L495 AbstractCegarLoop]: Abstraction has 687 states and 1097 transitions. [2022-07-13 17:21:07,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 17:21:07,067 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1097 transitions. [2022-07-13 17:21:07,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-13 17:21:07,069 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:21:07,070 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 17:21:07,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-13 17:21:07,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:21:07,288 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:21:07,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:21:07,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1409829739, now seen corresponding path program 1 times [2022-07-13 17:21:07,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:21:07,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068220765] [2022-07-13 17:21:07,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:07,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:21:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:07,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:07,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:07,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:07,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:07,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:07,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:07,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:21:07,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:07,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:07,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:07,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:07,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:07,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 17:21:07,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:07,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:07,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:07,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:21:07,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:07,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:21:07,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:07,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 17:21:07,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:07,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:21:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:07,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:21:07,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:07,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:21:07,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:07,573 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 17:21:07,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:21:07,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068220765] [2022-07-13 17:21:07,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068220765] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:21:07,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708590702] [2022-07-13 17:21:07,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:07,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:21:07,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:21:07,574 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:21:07,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-13 17:21:07,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:07,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 1852 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 17:21:07,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:21:07,956 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-13 17:21:07,957 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:21:07,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708590702] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:21:07,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:21:07,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 13 [2022-07-13 17:21:07,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329575906] [2022-07-13 17:21:07,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:21:07,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 17:21:07,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:21:07,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 17:21:07,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:21:07,958 INFO L87 Difference]: Start difference. First operand 687 states and 1097 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-13 17:21:08,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:21:08,341 INFO L93 Difference]: Finished difference Result 736 states and 1169 transitions. [2022-07-13 17:21:08,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 17:21:08,341 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 131 [2022-07-13 17:21:08,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:21:08,345 INFO L225 Difference]: With dead ends: 736 [2022-07-13 17:21:08,345 INFO L226 Difference]: Without dead ends: 721 [2022-07-13 17:21:08,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:21:08,348 INFO L413 NwaCegarLoop]: 915 mSDtfsCounter, 851 mSDsluCounter, 1440 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 2355 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 [2022-07-13 17:21:08,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 2355 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 17:21:08,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2022-07-13 17:21:08,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 690. [2022-07-13 17:21:08,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 559 states have (on average 1.6118067978533095) internal successors, (901), 582 states have internal predecessors, (901), 100 states have call successors, (100), 27 states have call predecessors, (100), 30 states have return successors, (99), 93 states have call predecessors, (99), 95 states have call successors, (99) [2022-07-13 17:21:08,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1100 transitions. [2022-07-13 17:21:08,367 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1100 transitions. Word has length 131 [2022-07-13 17:21:08,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:21:08,367 INFO L495 AbstractCegarLoop]: Abstraction has 690 states and 1100 transitions. [2022-07-13 17:21:08,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-13 17:21:08,368 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1100 transitions. [2022-07-13 17:21:08,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-13 17:21:08,370 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:21:08,370 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 17:21:08,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-07-13 17:21:08,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:21:08,583 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:21:08,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:21:08,584 INFO L85 PathProgramCache]: Analyzing trace with hash 283147014, now seen corresponding path program 1 times [2022-07-13 17:21:08,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:21:08,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241680350] [2022-07-13 17:21:08,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:08,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:21:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:08,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:08,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:08,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:08,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:08,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:08,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:08,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:21:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:08,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:08,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:08,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:08,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:08,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 17:21:08,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:08,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:08,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:08,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:21:08,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:08,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:21:08,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:08,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 17:21:08,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:08,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:21:08,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:08,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:21:08,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:08,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:21:08,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:08,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 17:21:08,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:08,877 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 17:21:08,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:21:08,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241680350] [2022-07-13 17:21:08,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241680350] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:21:08,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197404118] [2022-07-13 17:21:08,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:08,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:21:08,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:21:08,879 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:21:08,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-13 17:21:09,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:09,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 1868 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 17:21:09,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:21:09,154 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-13 17:21:09,155 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:21:09,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197404118] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:21:09,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:21:09,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2022-07-13 17:21:09,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772679168] [2022-07-13 17:21:09,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:21:09,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 17:21:09,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:21:09,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 17:21:09,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:21:09,156 INFO L87 Difference]: Start difference. First operand 690 states and 1100 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-13 17:21:09,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:21:09,182 INFO L93 Difference]: Finished difference Result 707 states and 1121 transitions. [2022-07-13 17:21:09,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 17:21:09,182 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 1 states have call successors, (15) Word has length 137 [2022-07-13 17:21:09,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:21:09,187 INFO L225 Difference]: With dead ends: 707 [2022-07-13 17:21:09,187 INFO L226 Difference]: Without dead ends: 692 [2022-07-13 17:21:09,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-13 17:21:09,188 INFO L413 NwaCegarLoop]: 920 mSDtfsCounter, 37 mSDsluCounter, 2710 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 3630 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:21:09,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 3630 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:21:09,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2022-07-13 17:21:09,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 690. [2022-07-13 17:21:09,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 559 states have (on average 1.6100178890876566) internal successors, (900), 582 states have internal predecessors, (900), 100 states have call successors, (100), 27 states have call predecessors, (100), 30 states have return successors, (99), 93 states have call predecessors, (99), 95 states have call successors, (99) [2022-07-13 17:21:09,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1099 transitions. [2022-07-13 17:21:09,209 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1099 transitions. Word has length 137 [2022-07-13 17:21:09,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:21:09,209 INFO L495 AbstractCegarLoop]: Abstraction has 690 states and 1099 transitions. [2022-07-13 17:21:09,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-13 17:21:09,210 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1099 transitions. [2022-07-13 17:21:09,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-13 17:21:09,212 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:21:09,212 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 17:21:09,232 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-07-13 17:21:09,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:21:09,427 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:21:09,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:21:09,428 INFO L85 PathProgramCache]: Analyzing trace with hash -916984519, now seen corresponding path program 1 times [2022-07-13 17:21:09,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:21:09,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095247230] [2022-07-13 17:21:09,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:09,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:21:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:09,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:09,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:09,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:09,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:09,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:09,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:09,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:21:09,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:09,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:09,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:09,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:09,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 17:21:09,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:09,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:09,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:09,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:21:09,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:09,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:21:09,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:09,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 17:21:09,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:09,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:21:09,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:09,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:21:09,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:09,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:21:09,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:09,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 17:21:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:09,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 17:21:09,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:09,722 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 17:21:09,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:21:09,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095247230] [2022-07-13 17:21:09,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095247230] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:21:09,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042060605] [2022-07-13 17:21:09,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:09,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:21:09,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:21:09,724 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:21:09,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-13 17:21:09,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:09,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 1905 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 17:21:09,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:21:09,987 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 17:21:09,988 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:21:09,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042060605] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:21:09,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:21:09,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2022-07-13 17:21:09,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772077576] [2022-07-13 17:21:09,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:21:09,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 17:21:09,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:21:09,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 17:21:09,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-13 17:21:09,989 INFO L87 Difference]: Start difference. First operand 690 states and 1099 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 17:21:10,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:21:10,031 INFO L93 Difference]: Finished difference Result 1354 states and 2168 transitions. [2022-07-13 17:21:10,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 17:21:10,032 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 148 [2022-07-13 17:21:10,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:21:10,035 INFO L225 Difference]: With dead ends: 1354 [2022-07-13 17:21:10,035 INFO L226 Difference]: Without dead ends: 659 [2022-07-13 17:21:10,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:21:10,038 INFO L413 NwaCegarLoop]: 908 mSDtfsCounter, 11 mSDsluCounter, 1807 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2715 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:21:10,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2715 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:21:10,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2022-07-13 17:21:10,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 659. [2022-07-13 17:21:10,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 531 states have (on average 1.6082862523540489) internal successors, (854), 552 states have internal predecessors, (854), 99 states have call successors, (99), 27 states have call predecessors, (99), 28 states have return successors, (96), 92 states have call predecessors, (96), 94 states have call successors, (96) [2022-07-13 17:21:10,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 1049 transitions. [2022-07-13 17:21:10,057 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 1049 transitions. Word has length 148 [2022-07-13 17:21:10,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:21:10,058 INFO L495 AbstractCegarLoop]: Abstraction has 659 states and 1049 transitions. [2022-07-13 17:21:10,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 17:21:10,058 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 1049 transitions. [2022-07-13 17:21:10,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-13 17:21:10,060 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:21:10,061 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 17:21:10,095 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-07-13 17:21:10,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:21:10,279 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:21:10,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:21:10,280 INFO L85 PathProgramCache]: Analyzing trace with hash -27296178, now seen corresponding path program 1 times [2022-07-13 17:21:10,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:21:10,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909825249] [2022-07-13 17:21:10,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:10,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:21:10,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:10,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:10,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:10,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:10,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:10,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:10,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:10,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 17:21:10,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:10,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:10,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:10,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:10,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:10,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 17:21:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:10,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:10,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:10,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:21:10,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:10,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:21:10,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:10,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 17:21:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:10,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:21:10,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:10,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:21:10,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:10,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:21:10,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:10,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 17:21:10,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:10,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 17:21:10,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:10,565 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-13 17:21:10,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:21:10,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909825249] [2022-07-13 17:21:10,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909825249] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:21:10,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521179363] [2022-07-13 17:21:10,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:10,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:21:10,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:21:10,567 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:21:10,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-07-13 17:21:10,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:10,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 1908 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-13 17:21:10,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:21:10,883 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 17:21:10,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:21:10,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521179363] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:21:10,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:21:10,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-07-13 17:21:10,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912709546] [2022-07-13 17:21:10,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:21:10,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:21:10,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:21:10,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:21:10,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-13 17:21:10,885 INFO L87 Difference]: Start difference. First operand 659 states and 1049 transitions. Second operand has 7 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-13 17:21:10,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:21:10,945 INFO L93 Difference]: Finished difference Result 1287 states and 2062 transitions. [2022-07-13 17:21:10,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 17:21:10,946 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 150 [2022-07-13 17:21:10,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:21:10,950 INFO L225 Difference]: With dead ends: 1287 [2022-07-13 17:21:10,950 INFO L226 Difference]: Without dead ends: 659 [2022-07-13 17:21:10,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:21:10,953 INFO L413 NwaCegarLoop]: 926 mSDtfsCounter, 143 mSDsluCounter, 4455 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 5381 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:21:10,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 5381 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:21:10,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2022-07-13 17:21:10,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 638. [2022-07-13 17:21:10,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 510 states have (on average 1.607843137254902) internal successors, (820), 531 states have internal predecessors, (820), 99 states have call successors, (99), 27 states have call predecessors, (99), 28 states have return successors, (96), 92 states have call predecessors, (96), 94 states have call successors, (96) [2022-07-13 17:21:10,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 1015 transitions. [2022-07-13 17:21:10,996 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 1015 transitions. Word has length 150 [2022-07-13 17:21:10,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:21:10,996 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 1015 transitions. [2022-07-13 17:21:10,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-13 17:21:10,997 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 1015 transitions. [2022-07-13 17:21:10,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-07-13 17:21:10,999 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:21:11,000 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 17:21:11,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-07-13 17:21:11,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:21:11,218 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:21:11,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:21:11,218 INFO L85 PathProgramCache]: Analyzing trace with hash 2034212499, now seen corresponding path program 1 times [2022-07-13 17:21:11,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:21:11,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400385946] [2022-07-13 17:21:11,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:11,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:21:11,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:11,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:11,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:11,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:11,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:11,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:11,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:11,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 17:21:11,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:11,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:11,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:11,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:11,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:11,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 17:21:11,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:11,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:11,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:11,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:21:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:11,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:21:11,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:11,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 17:21:11,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:11,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:21:11,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:11,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:21:11,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:11,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:21:11,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:11,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 17:21:11,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:11,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 17:21:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:11,568 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-13 17:21:11,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:21:11,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400385946] [2022-07-13 17:21:11,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400385946] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:21:11,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776027337] [2022-07-13 17:21:11,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:11,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:21:11,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:21:11,570 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:21:11,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-07-13 17:21:11,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:11,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 1914 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 17:21:11,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:21:11,842 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 17:21:11,842 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:21:11,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776027337] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:21:11,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:21:11,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-07-13 17:21:11,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570339395] [2022-07-13 17:21:11,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:21:11,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 17:21:11,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:21:11,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 17:21:11,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-07-13 17:21:11,844 INFO L87 Difference]: Start difference. First operand 638 states and 1015 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 17:21:11,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:21:11,921 INFO L93 Difference]: Finished difference Result 1245 states and 1996 transitions. [2022-07-13 17:21:11,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 17:21:11,922 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 152 [2022-07-13 17:21:11,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:21:11,925 INFO L225 Difference]: With dead ends: 1245 [2022-07-13 17:21:11,925 INFO L226 Difference]: Without dead ends: 638 [2022-07-13 17:21:11,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-07-13 17:21:11,927 INFO L413 NwaCegarLoop]: 867 mSDtfsCounter, 176 mSDsluCounter, 1681 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 2548 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:21:11,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 2548 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 17:21:11,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2022-07-13 17:21:11,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 638. [2022-07-13 17:21:11,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 510 states have (on average 1.6058823529411765) internal successors, (819), 531 states have internal predecessors, (819), 99 states have call successors, (99), 27 states have call predecessors, (99), 28 states have return successors, (96), 92 states have call predecessors, (96), 94 states have call successors, (96) [2022-07-13 17:21:11,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 1014 transitions. [2022-07-13 17:21:11,960 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 1014 transitions. Word has length 152 [2022-07-13 17:21:11,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:21:11,961 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 1014 transitions. [2022-07-13 17:21:11,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 17:21:11,961 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 1014 transitions. [2022-07-13 17:21:11,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-13 17:21:11,963 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:21:11,963 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 17:21:11,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-07-13 17:21:12,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:21:12,163 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:21:12,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:21:12,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1039038885, now seen corresponding path program 1 times [2022-07-13 17:21:12,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:21:12,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451909799] [2022-07-13 17:21:12,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:12,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:21:12,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:12,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:12,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:12,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:12,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:12,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:12,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 17:21:12,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:12,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:12,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:12,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:12,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:12,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 17:21:12,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:12,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:12,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:12,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:21:12,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:12,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:21:12,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:12,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 17:21:12,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:12,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:21:12,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:12,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:21:12,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:12,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:21:12,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:12,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 17:21:12,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:12,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 17:21:12,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:12,450 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-13 17:21:12,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:21:12,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451909799] [2022-07-13 17:21:12,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451909799] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:21:12,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:21:12,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:21:12,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992901634] [2022-07-13 17:21:12,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:21:12,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:21:12,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:21:12,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:21:12,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:21:12,452 INFO L87 Difference]: Start difference. First operand 638 states and 1014 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 17:21:16,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:21:16,605 INFO L93 Difference]: Finished difference Result 1510 states and 2461 transitions. [2022-07-13 17:21:16,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:21:16,606 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 153 [2022-07-13 17:21:16,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:21:16,609 INFO L225 Difference]: With dead ends: 1510 [2022-07-13 17:21:16,610 INFO L226 Difference]: Without dead ends: 889 [2022-07-13 17:21:16,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-07-13 17:21:16,612 INFO L413 NwaCegarLoop]: 945 mSDtfsCounter, 1386 mSDsluCounter, 1332 mSDsCounter, 0 mSdLazyCounter, 2634 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 2277 SdHoareTripleChecker+Invalid, 3052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 2634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-13 17:21:16,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1467 Valid, 2277 Invalid, 3052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 2634 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-07-13 17:21:16,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2022-07-13 17:21:16,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 598. [2022-07-13 17:21:16,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 473 states have (on average 1.5983086680761098) internal successors, (756), 492 states have internal predecessors, (756), 98 states have call successors, (98), 27 states have call predecessors, (98), 26 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2022-07-13 17:21:16,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 947 transitions. [2022-07-13 17:21:16,651 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 947 transitions. Word has length 153 [2022-07-13 17:21:16,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:21:16,651 INFO L495 AbstractCegarLoop]: Abstraction has 598 states and 947 transitions. [2022-07-13 17:21:16,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 17:21:16,651 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 947 transitions. [2022-07-13 17:21:16,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-13 17:21:16,653 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:21:16,653 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 17:21:16,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-13 17:21:16,654 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:21:16,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:21:16,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1862521589, now seen corresponding path program 1 times [2022-07-13 17:21:16,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:21:16,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855264657] [2022-07-13 17:21:16,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:16,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:21:16,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:16,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:16,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:16,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:16,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:16,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:16,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:16,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 17:21:16,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:16,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:16,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:16,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:21:16,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:16,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 17:21:16,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:16,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:16,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:16,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:21:16,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:16,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:21:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:16,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 17:21:16,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:16,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:21:16,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:16,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:21:16,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:16,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:21:16,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:16,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 17:21:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:16,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 17:21:16,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:16,995 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 17:21:16,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:21:16,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855264657] [2022-07-13 17:21:16,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855264657] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:21:16,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:21:16,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-13 17:21:16,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140175883] [2022-07-13 17:21:16,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:21:16,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-13 17:21:16,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:21:16,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-13 17:21:16,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:21:16,997 INFO L87 Difference]: Start difference. First operand 598 states and 947 transitions. Second operand has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 8 states have internal predecessors, (113), 2 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 17:21:23,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:21:23,262 INFO L93 Difference]: Finished difference Result 1438 states and 2355 transitions. [2022-07-13 17:21:23,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 17:21:23,263 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 8 states have internal predecessors, (113), 2 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) Word has length 154 [2022-07-13 17:21:23,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:21:23,267 INFO L225 Difference]: With dead ends: 1438 [2022-07-13 17:21:23,267 INFO L226 Difference]: Without dead ends: 941 [2022-07-13 17:21:23,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2022-07-13 17:21:23,270 INFO L413 NwaCegarLoop]: 992 mSDtfsCounter, 1930 mSDsluCounter, 4435 mSDsCounter, 0 mSdLazyCounter, 7743 mSolverCounterSat, 628 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2005 SdHoareTripleChecker+Valid, 5427 SdHoareTripleChecker+Invalid, 8371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 628 IncrementalHoareTripleChecker+Valid, 7743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-07-13 17:21:23,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2005 Valid, 5427 Invalid, 8371 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [628 Valid, 7743 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-07-13 17:21:23,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2022-07-13 17:21:23,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 605. [2022-07-13 17:21:23,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 478 states have (on average 1.5899581589958158) internal successors, (760), 497 states have internal predecessors, (760), 98 states have call successors, (98), 27 states have call predecessors, (98), 28 states have return successors, (98), 93 states have call predecessors, (98), 93 states have call successors, (98) [2022-07-13 17:21:23,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 956 transitions. [2022-07-13 17:21:23,314 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 956 transitions. Word has length 154 [2022-07-13 17:21:23,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:21:23,314 INFO L495 AbstractCegarLoop]: Abstraction has 605 states and 956 transitions. [2022-07-13 17:21:23,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 8 states have internal predecessors, (113), 2 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 17:21:23,314 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 956 transitions. [2022-07-13 17:21:23,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-13 17:21:23,316 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:21:23,317 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 17:21:23,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-13 17:21:23,317 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:21:23,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:21:23,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1612104420, now seen corresponding path program 1 times [2022-07-13 17:21:23,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:21:23,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050911212] [2022-07-13 17:21:23,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:23,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:21:23,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:23,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:23,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:23,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:23,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:23,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:23,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:23,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 17:21:23,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:23,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:23,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:23,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:21:23,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:23,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 17:21:23,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:23,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:23,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:23,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:21:23,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:23,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:21:23,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:23,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 17:21:23,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:23,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 17:21:23,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:23,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 17:21:23,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:23,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 17:21:23,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:23,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 17:21:23,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:23,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 17:21:23,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:23,660 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 17:21:23,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:21:23,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050911212] [2022-07-13 17:21:23,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050911212] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:21:23,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:21:23,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-13 17:21:23,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754675132] [2022-07-13 17:21:23,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:21:23,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 17:21:23,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:21:23,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 17:21:23,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-13 17:21:23,663 INFO L87 Difference]: Start difference. First operand 605 states and 956 transitions. Second operand has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 7 states have internal predecessors, (116), 2 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 17:21:29,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:21:29,234 INFO L93 Difference]: Finished difference Result 1489 states and 2427 transitions. [2022-07-13 17:21:29,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-13 17:21:29,234 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 7 states have internal predecessors, (116), 2 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) Word has length 156 [2022-07-13 17:21:29,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:21:29,238 INFO L225 Difference]: With dead ends: 1489 [2022-07-13 17:21:29,238 INFO L226 Difference]: Without dead ends: 927 [2022-07-13 17:21:29,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2022-07-13 17:21:29,240 INFO L413 NwaCegarLoop]: 947 mSDtfsCounter, 1492 mSDsluCounter, 3953 mSDsCounter, 0 mSdLazyCounter, 6652 mSolverCounterSat, 457 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1573 SdHoareTripleChecker+Valid, 4900 SdHoareTripleChecker+Invalid, 7109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 457 IncrementalHoareTripleChecker+Valid, 6652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-07-13 17:21:29,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1573 Valid, 4900 Invalid, 7109 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [457 Valid, 6652 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-07-13 17:21:29,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2022-07-13 17:21:29,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 594. [2022-07-13 17:21:29,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 467 states have (on average 1.5995717344753748) internal successors, (747), 485 states have internal predecessors, (747), 98 states have call successors, (98), 27 states have call predecessors, (98), 28 states have return successors, (98), 94 states have call predecessors, (98), 93 states have call successors, (98) [2022-07-13 17:21:29,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 943 transitions. [2022-07-13 17:21:29,288 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 943 transitions. Word has length 156 [2022-07-13 17:21:29,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:21:29,288 INFO L495 AbstractCegarLoop]: Abstraction has 594 states and 943 transitions. [2022-07-13 17:21:29,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 7 states have internal predecessors, (116), 2 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 17:21:29,288 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 943 transitions. [2022-07-13 17:21:29,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-13 17:21:29,290 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:21:29,290 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 17:21:29,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-13 17:21:29,291 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:21:29,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:21:29,291 INFO L85 PathProgramCache]: Analyzing trace with hash 321878398, now seen corresponding path program 1 times [2022-07-13 17:21:29,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:21:29,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472063898] [2022-07-13 17:21:29,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:29,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:21:29,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:29,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:29,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:29,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:29,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:29,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:29,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 17:21:29,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:29,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:29,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:29,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:21:29,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:29,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 17:21:29,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:29,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:29,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:29,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:21:29,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:29,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:21:29,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:29,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 17:21:29,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:29,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 17:21:29,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:29,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 17:21:29,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:29,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 17:21:29,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:29,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 17:21:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:29,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 17:21:29,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:29,587 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 17:21:29,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:21:29,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472063898] [2022-07-13 17:21:29,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472063898] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:21:29,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:21:29,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 17:21:29,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889854917] [2022-07-13 17:21:29,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:21:29,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 17:21:29,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:21:29,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 17:21:29,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:21:29,589 INFO L87 Difference]: Start difference. First operand 594 states and 943 transitions. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 6 states have internal predecessors, (115), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 17:21:34,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:21:34,063 INFO L93 Difference]: Finished difference Result 1500 states and 2440 transitions. [2022-07-13 17:21:34,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 17:21:34,063 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 6 states have internal predecessors, (115), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 156 [2022-07-13 17:21:34,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:21:34,067 INFO L225 Difference]: With dead ends: 1500 [2022-07-13 17:21:34,067 INFO L226 Difference]: Without dead ends: 943 [2022-07-13 17:21:34,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2022-07-13 17:21:34,070 INFO L413 NwaCegarLoop]: 915 mSDtfsCounter, 1513 mSDsluCounter, 2272 mSDsCounter, 0 mSdLazyCounter, 4050 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1597 SdHoareTripleChecker+Valid, 3187 SdHoareTripleChecker+Invalid, 4500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 4050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-13 17:21:34,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1597 Valid, 3187 Invalid, 4500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 4050 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-13 17:21:34,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2022-07-13 17:21:34,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 601. [2022-07-13 17:21:34,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 474 states have (on average 1.590717299578059) internal successors, (754), 492 states have internal predecessors, (754), 98 states have call successors, (98), 27 states have call predecessors, (98), 28 states have return successors, (98), 94 states have call predecessors, (98), 93 states have call successors, (98) [2022-07-13 17:21:34,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 950 transitions. [2022-07-13 17:21:34,150 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 950 transitions. Word has length 156 [2022-07-13 17:21:34,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:21:34,151 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 950 transitions. [2022-07-13 17:21:34,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 6 states have internal predecessors, (115), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 17:21:34,151 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 950 transitions. [2022-07-13 17:21:34,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-13 17:21:34,153 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:21:34,153 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 17:21:34,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-13 17:21:34,153 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:21:34,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:21:34,154 INFO L85 PathProgramCache]: Analyzing trace with hash -728268342, now seen corresponding path program 1 times [2022-07-13 17:21:34,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:21:34,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539120593] [2022-07-13 17:21:34,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:34,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:21:34,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:34,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:34,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:34,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:34,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:34,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:34,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:34,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 17:21:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:34,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:34,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:34,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:21:34,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:34,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 17:21:34,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:34,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:34,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:34,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:21:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:34,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:21:34,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:34,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 17:21:34,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:34,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:21:34,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:34,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:21:34,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:34,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 17:21:34,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:34,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 17:21:34,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:34,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 17:21:34,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:34,487 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-13 17:21:34,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:21:34,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539120593] [2022-07-13 17:21:34,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539120593] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:21:34,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106937440] [2022-07-13 17:21:34,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:34,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:21:34,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:21:34,489 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:21:34,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-07-13 17:21:34,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:34,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 1922 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 17:21:34,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:21:34,731 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 17:21:34,731 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:21:34,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106937440] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:21:34,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:21:34,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 13 [2022-07-13 17:21:34,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121504862] [2022-07-13 17:21:34,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:21:34,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 17:21:34,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:21:34,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 17:21:34,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:21:34,732 INFO L87 Difference]: Start difference. First operand 601 states and 950 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 17:21:34,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:21:34,927 INFO L93 Difference]: Finished difference Result 1547 states and 2541 transitions. [2022-07-13 17:21:34,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 17:21:34,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 160 [2022-07-13 17:21:34,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:21:34,935 INFO L225 Difference]: With dead ends: 1547 [2022-07-13 17:21:34,936 INFO L226 Difference]: Without dead ends: 1053 [2022-07-13 17:21:34,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 190 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:21:34,942 INFO L413 NwaCegarLoop]: 1061 mSDtfsCounter, 832 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:21:34,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [832 Valid, 1775 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 17:21:34,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2022-07-13 17:21:35,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 1038. [2022-07-13 17:21:35,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1038 states, 812 states have (on average 1.5923645320197044) internal successors, (1293), 843 states have internal predecessors, (1293), 176 states have call successors, (176), 46 states have call predecessors, (176), 49 states have return successors, (200), 174 states have call predecessors, (200), 171 states have call successors, (200) [2022-07-13 17:21:35,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1669 transitions. [2022-07-13 17:21:35,037 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1669 transitions. Word has length 160 [2022-07-13 17:21:35,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:21:35,038 INFO L495 AbstractCegarLoop]: Abstraction has 1038 states and 1669 transitions. [2022-07-13 17:21:35,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 17:21:35,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1669 transitions. [2022-07-13 17:21:35,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-13 17:21:35,040 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:21:35,040 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 17:21:35,058 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-07-13 17:21:35,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-07-13 17:21:35,241 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:21:35,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:21:35,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1600933065, now seen corresponding path program 1 times [2022-07-13 17:21:35,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:21:35,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192314489] [2022-07-13 17:21:35,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:35,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:21:35,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:35,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:35,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:35,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:35,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:35,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 17:21:35,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:35,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:35,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:35,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:21:35,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:35,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 17:21:35,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:35,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:35,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:35,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:21:35,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:35,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:21:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:35,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 17:21:35,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:35,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:21:35,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:35,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:21:35,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:35,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:21:35,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:35,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 17:21:35,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:35,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 17:21:35,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:35,588 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-13 17:21:35,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:21:35,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192314489] [2022-07-13 17:21:35,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192314489] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:21:35,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:21:35,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-13 17:21:35,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215730338] [2022-07-13 17:21:35,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:21:35,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 17:21:35,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:21:35,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 17:21:35,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-13 17:21:35,590 INFO L87 Difference]: Start difference. First operand 1038 states and 1669 transitions. Second operand has 12 states, 12 states have (on average 9.5) internal successors, (114), 7 states have internal predecessors, (114), 3 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-13 17:21:46,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:21:46,299 INFO L93 Difference]: Finished difference Result 3786 states and 6459 transitions. [2022-07-13 17:21:46,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-13 17:21:46,300 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.5) internal successors, (114), 7 states have internal predecessors, (114), 3 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 3 states have call successors, (16) Word has length 161 [2022-07-13 17:21:46,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:21:46,313 INFO L225 Difference]: With dead ends: 3786 [2022-07-13 17:21:46,313 INFO L226 Difference]: Without dead ends: 2855 [2022-07-13 17:21:46,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=248, Invalid=1012, Unknown=0, NotChecked=0, Total=1260 [2022-07-13 17:21:46,317 INFO L413 NwaCegarLoop]: 994 mSDtfsCounter, 2589 mSDsluCounter, 3935 mSDsCounter, 0 mSdLazyCounter, 8663 mSolverCounterSat, 990 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2665 SdHoareTripleChecker+Valid, 4929 SdHoareTripleChecker+Invalid, 9653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 990 IncrementalHoareTripleChecker+Valid, 8663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:21:46,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2665 Valid, 4929 Invalid, 9653 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [990 Valid, 8663 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-07-13 17:21:46,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2855 states. [2022-07-13 17:21:46,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2855 to 2024. [2022-07-13 17:21:46,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2024 states, 1581 states have (on average 1.6110056925996206) internal successors, (2547), 1632 states have internal predecessors, (2547), 349 states have call successors, (349), 82 states have call predecessors, (349), 93 states have return successors, (402), 357 states have call predecessors, (402), 344 states have call successors, (402) [2022-07-13 17:21:46,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2024 states to 2024 states and 3298 transitions. [2022-07-13 17:21:46,576 INFO L78 Accepts]: Start accepts. Automaton has 2024 states and 3298 transitions. Word has length 161 [2022-07-13 17:21:46,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:21:46,576 INFO L495 AbstractCegarLoop]: Abstraction has 2024 states and 3298 transitions. [2022-07-13 17:21:46,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.5) internal successors, (114), 7 states have internal predecessors, (114), 3 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-13 17:21:46,577 INFO L276 IsEmpty]: Start isEmpty. Operand 2024 states and 3298 transitions. [2022-07-13 17:21:46,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-07-13 17:21:46,579 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:21:46,579 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 17:21:46,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-13 17:21:46,579 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:21:46,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:21:46,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1220970118, now seen corresponding path program 1 times [2022-07-13 17:21:46,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:21:46,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394400159] [2022-07-13 17:21:46,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:46,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:21:46,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:46,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:46,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:46,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:46,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:46,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:46,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:46,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 17:21:46,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:46,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:46,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:46,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:21:46,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:46,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 17:21:46,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:46,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:46,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:46,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:21:46,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:46,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:21:46,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:46,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 17:21:46,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:46,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:21:46,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:46,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:21:46,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:46,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 17:21:46,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:46,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 17:21:46,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:46,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 17:21:46,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:46,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 17:21:46,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:46,927 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-13 17:21:46,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:21:46,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394400159] [2022-07-13 17:21:46,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394400159] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:21:46,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322037945] [2022-07-13 17:21:46,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:46,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:21:46,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:21:46,929 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:21:46,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-07-13 17:21:47,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:47,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 1941 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 17:21:47,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:21:47,172 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 17:21:47,172 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:21:47,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322037945] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:21:47,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:21:47,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 13 [2022-07-13 17:21:47,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710449437] [2022-07-13 17:21:47,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:21:47,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 17:21:47,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:21:47,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 17:21:47,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:21:47,174 INFO L87 Difference]: Start difference. First operand 2024 states and 3298 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-13 17:21:47,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:21:47,520 INFO L93 Difference]: Finished difference Result 4321 states and 7182 transitions. [2022-07-13 17:21:47,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 17:21:47,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 165 [2022-07-13 17:21:47,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:21:47,533 INFO L225 Difference]: With dead ends: 4321 [2022-07-13 17:21:47,533 INFO L226 Difference]: Without dead ends: 2731 [2022-07-13 17:21:47,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 198 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:21:47,540 INFO L413 NwaCegarLoop]: 926 mSDtfsCounter, 892 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 1607 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:21:47,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [892 Valid, 1607 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 17:21:47,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2731 states. [2022-07-13 17:21:47,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2731 to 2716. [2022-07-13 17:21:47,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2716 states, 2121 states have (on average 1.5935879302215936) internal successors, (3380), 2183 states have internal predecessors, (3380), 462 states have call successors, (462), 117 states have call predecessors, (462), 132 states have return successors, (614), 475 states have call predecessors, (614), 457 states have call successors, (614) [2022-07-13 17:21:47,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2716 states to 2716 states and 4456 transitions. [2022-07-13 17:21:47,842 INFO L78 Accepts]: Start accepts. Automaton has 2716 states and 4456 transitions. Word has length 165 [2022-07-13 17:21:47,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:21:47,842 INFO L495 AbstractCegarLoop]: Abstraction has 2716 states and 4456 transitions. [2022-07-13 17:21:47,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-13 17:21:47,842 INFO L276 IsEmpty]: Start isEmpty. Operand 2716 states and 4456 transitions. [2022-07-13 17:21:47,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-13 17:21:47,844 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:21:47,845 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 17:21:47,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-07-13 17:21:48,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-07-13 17:21:48,052 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:21:48,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:21:48,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1750073846, now seen corresponding path program 1 times [2022-07-13 17:21:48,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:21:48,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041368293] [2022-07-13 17:21:48,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:48,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:21:48,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:48,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:48,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:48,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:48,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:48,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:48,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:48,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 17:21:48,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:48,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:48,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:48,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:21:48,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:48,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 17:21:48,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:48,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:48,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:48,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:21:48,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:48,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:21:48,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:48,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 17:21:48,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:48,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:21:48,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:48,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:21:48,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:48,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 17:21:48,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:48,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 17:21:48,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:48,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 17:21:48,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:48,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 17:21:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:48,504 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-13 17:21:48,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:21:48,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041368293] [2022-07-13 17:21:48,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041368293] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:21:48,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495959451] [2022-07-13 17:21:48,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:48,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:21:48,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:21:48,513 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:21:48,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-07-13 17:21:48,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:48,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 1945 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 17:21:48,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:21:48,817 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 17:21:48,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:21:48,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495959451] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:21:48,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:21:48,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [19] total 22 [2022-07-13 17:21:48,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089731134] [2022-07-13 17:21:48,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:21:48,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:21:48,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:21:48,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:21:48,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2022-07-13 17:21:48,820 INFO L87 Difference]: Start difference. First operand 2716 states and 4456 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 4 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-13 17:21:49,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:21:49,256 INFO L93 Difference]: Finished difference Result 5450 states and 9036 transitions. [2022-07-13 17:21:49,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 17:21:49,257 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 4 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 168 [2022-07-13 17:21:49,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:21:49,271 INFO L225 Difference]: With dead ends: 5450 [2022-07-13 17:21:49,271 INFO L226 Difference]: Without dead ends: 3120 [2022-07-13 17:21:49,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=494, Unknown=0, NotChecked=0, Total=552 [2022-07-13 17:21:49,281 INFO L413 NwaCegarLoop]: 930 mSDtfsCounter, 376 mSDsluCounter, 3441 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 4371 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:21:49,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 4371 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 17:21:49,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3120 states. [2022-07-13 17:21:49,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3120 to 3120. [2022-07-13 17:21:49,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3120 states, 2469 states have (on average 1.5925475901174564) internal successors, (3932), 2537 states have internal predecessors, (3932), 504 states have call successors, (504), 125 states have call predecessors, (504), 146 states have return successors, (656), 517 states have call predecessors, (656), 499 states have call successors, (656) [2022-07-13 17:21:49,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3120 states to 3120 states and 5092 transitions. [2022-07-13 17:21:49,609 INFO L78 Accepts]: Start accepts. Automaton has 3120 states and 5092 transitions. Word has length 168 [2022-07-13 17:21:49,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:21:49,609 INFO L495 AbstractCegarLoop]: Abstraction has 3120 states and 5092 transitions. [2022-07-13 17:21:49,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 4 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-13 17:21:49,610 INFO L276 IsEmpty]: Start isEmpty. Operand 3120 states and 5092 transitions. [2022-07-13 17:21:49,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-13 17:21:49,612 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:21:49,612 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 17:21:49,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-07-13 17:21:49,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:21:49,822 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:21:49,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:21:49,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1280104289, now seen corresponding path program 1 times [2022-07-13 17:21:49,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:21:49,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284803831] [2022-07-13 17:21:49,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:21:49,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:21:49,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:49,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:21:49,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:49,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:49,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:49,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:21:49,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:49,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 17:21:49,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:49,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:49,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:49,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:21:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:50,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 17:21:50,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:50,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:21:50,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:50,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:21:50,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:50,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:21:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:50,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 17:21:50,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:50,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 17:21:50,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:50,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:21:50,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:50,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:21:50,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:50,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 17:21:50,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:50,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 17:21:50,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:50,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 17:21:50,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:21:50,152 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-13 17:21:50,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:21:50,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284803831] [2022-07-13 17:21:50,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284803831] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:21:50,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:21:50,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-13 17:21:50,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072891091] [2022-07-13 17:21:50,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:21:50,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-13 17:21:50,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:21:50,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-13 17:21:50,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:21:50,153 INFO L87 Difference]: Start difference. First operand 3120 states and 5092 transitions. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 10 states have internal predecessors, (120), 6 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2022-07-13 17:22:09,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:22:09,094 INFO L93 Difference]: Finished difference Result 12089 states and 21224 transitions. [2022-07-13 17:22:09,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-07-13 17:22:09,095 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 10 states have internal predecessors, (120), 6 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) Word has length 169 [2022-07-13 17:22:09,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:22:09,136 INFO L225 Difference]: With dead ends: 12089 [2022-07-13 17:22:09,136 INFO L226 Difference]: Without dead ends: 9080 [2022-07-13 17:22:09,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1157 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=634, Invalid=3026, Unknown=0, NotChecked=0, Total=3660 [2022-07-13 17:22:09,151 INFO L413 NwaCegarLoop]: 1089 mSDtfsCounter, 9874 mSDsluCounter, 4568 mSDsCounter, 0 mSdLazyCounter, 12578 mSolverCounterSat, 3434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9938 SdHoareTripleChecker+Valid, 5657 SdHoareTripleChecker+Invalid, 16012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3434 IncrementalHoareTripleChecker+Valid, 12578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2022-07-13 17:22:09,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9938 Valid, 5657 Invalid, 16012 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3434 Valid, 12578 Invalid, 0 Unknown, 0 Unchecked, 12.7s Time] [2022-07-13 17:22:09,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9080 states. [2022-07-13 17:22:09,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9080 to 7273. [2022-07-13 17:22:09,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7273 states, 5774 states have (on average 1.5699688257706963) internal successors, (9065), 5930 states have internal predecessors, (9065), 1112 states have call successors, (1112), 312 states have call predecessors, (1112), 386 states have return successors, (1845), 1150 states have call predecessors, (1845), 1107 states have call successors, (1845) [2022-07-13 17:22:10,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7273 states to 7273 states and 12022 transitions. [2022-07-13 17:22:10,050 INFO L78 Accepts]: Start accepts. Automaton has 7273 states and 12022 transitions. Word has length 169 [2022-07-13 17:22:10,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:22:10,051 INFO L495 AbstractCegarLoop]: Abstraction has 7273 states and 12022 transitions. [2022-07-13 17:22:10,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 10 states have internal predecessors, (120), 6 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2022-07-13 17:22:10,051 INFO L276 IsEmpty]: Start isEmpty. Operand 7273 states and 12022 transitions. [2022-07-13 17:22:10,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-13 17:22:10,055 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:22:10,055 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 17:22:10,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-13 17:22:10,055 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:22:10,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:22:10,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1361206897, now seen corresponding path program 1 times [2022-07-13 17:22:10,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:22:10,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497254185] [2022-07-13 17:22:10,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:22:10,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:22:10,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:10,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:22:10,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:10,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:22:10,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:10,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:22:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:10,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 17:22:10,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:10,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:22:10,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:10,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:22:10,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:10,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 17:22:10,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:10,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:22:10,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:10,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:22:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:10,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:22:10,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:10,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 17:22:10,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:10,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:22:10,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:10,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:22:10,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:10,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 17:22:10,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:10,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:22:10,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:10,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 17:22:10,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:10,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 17:22:10,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:10,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 17:22:10,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:22:10,668 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-13 17:22:10,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:22:10,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497254185] [2022-07-13 17:22:10,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497254185] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:22:10,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:22:10,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-07-13 17:22:10,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46593694] [2022-07-13 17:22:10,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:22:10,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-13 17:22:10,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:22:10,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-13 17:22:10,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=491, Unknown=0, NotChecked=0, Total=552 [2022-07-13 17:22:10,671 INFO L87 Difference]: Start difference. First operand 7273 states and 12022 transitions. Second operand has 24 states, 22 states have (on average 5.636363636363637) internal successors, (124), 18 states have internal predecessors, (124), 9 states have call successors, (19), 5 states have call predecessors, (19), 8 states have return successors, (18), 9 states have call predecessors, (18), 8 states have call successors, (18) [2022-07-13 17:24:17,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:24:17,691 INFO L93 Difference]: Finished difference Result 67607 states and 140514 transitions. [2022-07-13 17:24:17,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 373 states. [2022-07-13 17:24:17,691 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 5.636363636363637) internal successors, (124), 18 states have internal predecessors, (124), 9 states have call successors, (19), 5 states have call predecessors, (19), 8 states have return successors, (18), 9 states have call predecessors, (18), 8 states have call successors, (18) Word has length 175 [2022-07-13 17:24:17,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:24:18,260 INFO L225 Difference]: With dead ends: 67607 [2022-07-13 17:24:18,260 INFO L226 Difference]: Without dead ends: 60369 [2022-07-13 17:24:18,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 385 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68000 ImplicationChecksByTransitivity, 44.0s TimeCoverageRelationStatistics Valid=12770, Invalid=136612, Unknown=0, NotChecked=0, Total=149382 [2022-07-13 17:24:18,441 INFO L413 NwaCegarLoop]: 2479 mSDtfsCounter, 25830 mSDsluCounter, 17439 mSDsCounter, 0 mSdLazyCounter, 77476 mSolverCounterSat, 23307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25907 SdHoareTripleChecker+Valid, 19918 SdHoareTripleChecker+Invalid, 100783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 23307 IncrementalHoareTripleChecker+Valid, 77476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.8s IncrementalHoareTripleChecker+Time [2022-07-13 17:24:18,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25907 Valid, 19918 Invalid, 100783 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [23307 Valid, 77476 Invalid, 0 Unknown, 0 Unchecked, 68.8s Time] [2022-07-13 17:24:18,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60369 states. [2022-07-13 17:24:24,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60369 to 35351. [2022-07-13 17:24:24,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35351 states, 27183 states have (on average 1.5365117904572712) internal successors, (41767), 28195 states have internal predecessors, (41767), 6176 states have call successors, (6176), 1638 states have call predecessors, (6176), 1991 states have return successors, (11518), 6271 states have call predecessors, (11518), 6171 states have call successors, (11518) [2022-07-13 17:24:24,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35351 states to 35351 states and 59461 transitions. [2022-07-13 17:24:24,896 INFO L78 Accepts]: Start accepts. Automaton has 35351 states and 59461 transitions. Word has length 175 [2022-07-13 17:24:24,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:24:24,896 INFO L495 AbstractCegarLoop]: Abstraction has 35351 states and 59461 transitions. [2022-07-13 17:24:24,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 5.636363636363637) internal successors, (124), 18 states have internal predecessors, (124), 9 states have call successors, (19), 5 states have call predecessors, (19), 8 states have return successors, (18), 9 states have call predecessors, (18), 8 states have call successors, (18) [2022-07-13 17:24:24,896 INFO L276 IsEmpty]: Start isEmpty. Operand 35351 states and 59461 transitions. [2022-07-13 17:24:24,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 17:24:24,900 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:24:24,900 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 17:24:24,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-13 17:24:24,901 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:24:24,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:24:24,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1372875585, now seen corresponding path program 1 times [2022-07-13 17:24:24,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:24:24,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490044395] [2022-07-13 17:24:24,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:24:24,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:24:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:24:25,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:24:25,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:24:25,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:24:25,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:24:25,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:24:25,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:24:25,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 17:24:25,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:24:25,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:24:25,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:24:25,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:24:25,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:24:25,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 17:24:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:24:25,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:24:25,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:24:25,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:24:25,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:24:25,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:24:25,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:24:25,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 17:24:25,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:24:25,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:24:25,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:24:25,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:24:25,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:24:25,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:24:25,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:24:25,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-13 17:24:25,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:24:25,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:24:25,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:24:25,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 17:24:25,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:24:25,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 17:24:25,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:24:25,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 17:24:25,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:24:25,221 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-13 17:24:25,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:24:25,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490044395] [2022-07-13 17:24:25,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490044395] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:24:25,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205924216] [2022-07-13 17:24:25,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:24:25,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:24:25,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:24:25,224 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:24:25,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-07-13 17:24:25,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:24:25,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 1981 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 17:24:25,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:24:25,523 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 17:24:25,523 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:24:25,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205924216] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:24:25,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:24:25,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2022-07-13 17:24:25,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3377593] [2022-07-13 17:24:25,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:24:25,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 17:24:25,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:24:25,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 17:24:25,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-07-13 17:24:25,525 INFO L87 Difference]: Start difference. First operand 35351 states and 59461 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-13 17:24:31,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:24:31,223 INFO L93 Difference]: Finished difference Result 71319 states and 123786 transitions. [2022-07-13 17:24:31,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 17:24:31,227 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 179 [2022-07-13 17:24:31,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:24:31,426 INFO L225 Difference]: With dead ends: 71319 [2022-07-13 17:24:31,427 INFO L226 Difference]: Without dead ends: 36055 [2022-07-13 17:24:31,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-07-13 17:24:31,702 INFO L413 NwaCegarLoop]: 874 mSDtfsCounter, 22 mSDsluCounter, 1713 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2587 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:24:31,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 2587 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 17:24:31,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36055 states. [2022-07-13 17:24:37,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36055 to 36055. [2022-07-13 17:24:37,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36055 states, 27799 states have (on average 1.5398035900571962) internal successors, (42805), 28811 states have internal predecessors, (42805), 6176 states have call successors, (6176), 1726 states have call predecessors, (6176), 2079 states have return successors, (11570), 6271 states have call predecessors, (11570), 6171 states have call successors, (11570) [2022-07-13 17:24:37,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36055 states to 36055 states and 60551 transitions. [2022-07-13 17:24:37,381 INFO L78 Accepts]: Start accepts. Automaton has 36055 states and 60551 transitions. Word has length 179 [2022-07-13 17:24:37,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:24:37,382 INFO L495 AbstractCegarLoop]: Abstraction has 36055 states and 60551 transitions. [2022-07-13 17:24:37,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-13 17:24:37,382 INFO L276 IsEmpty]: Start isEmpty. Operand 36055 states and 60551 transitions. [2022-07-13 17:24:37,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-07-13 17:24:37,387 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:24:37,387 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 17:24:37,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-07-13 17:24:37,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:24:37,607 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:24:37,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:24:37,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1227206193, now seen corresponding path program 1 times [2022-07-13 17:24:37,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:24:37,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595711065] [2022-07-13 17:24:37,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:24:37,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:24:37,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:24:37,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:24:37,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:24:37,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:24:37,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:24:37,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:24:37,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:24:37,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 17:24:37,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:24:37,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:24:37,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:24:37,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:24:37,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:24:37,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 17:24:37,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:24:37,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:24:37,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:24:38,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:24:38,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:24:38,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:24:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:24:38,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 17:24:38,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:24:38,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:24:38,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:24:38,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:24:38,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:24:38,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:24:38,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:24:38,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 17:24:38,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:24:38,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:24:38,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:24:38,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 17:24:38,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:24:38,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 17:24:38,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:24:38,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 17:24:38,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:24:38,138 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-13 17:24:38,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:24:38,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595711065] [2022-07-13 17:24:38,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595711065] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:24:38,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180882958] [2022-07-13 17:24:38,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:24:38,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:24:38,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:24:38,140 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:24:38,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-07-13 17:24:38,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:24:38,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 1982 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 17:24:38,377 INFO L286 TraceCheckSpWp]: Computing forward predicates...