/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/product-lines/elevator_spec1_product09.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 02:52:43,922 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 02:52:43,923 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 02:52:43,950 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 02:52:43,950 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 02:52:43,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 02:52:43,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 02:52:43,954 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 02:52:43,957 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 02:52:43,961 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 02:52:43,962 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 02:52:43,964 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 02:52:43,964 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 02:52:43,966 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 02:52:43,967 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 02:52:43,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 02:52:43,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 02:52:43,970 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 02:52:43,972 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 02:52:43,976 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 02:52:43,976 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 02:52:43,978 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 02:52:43,979 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 02:52:43,980 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 02:52:43,986 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 02:52:43,986 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 02:52:43,987 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 02:52:43,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 02:52:43,988 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 02:52:43,989 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 02:52:43,989 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 02:52:43,989 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 02:52:43,990 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 02:52:43,990 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 02:52:43,991 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 02:52:43,991 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 02:52:43,991 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 02:52:43,991 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 02:52:43,991 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 02:52:43,992 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 02:52:43,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 02:52:43,993 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-02 02:52:44,015 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 02:52:44,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 02:52:44,015 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 02:52:44,015 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 02:52:44,016 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 02:52:44,016 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 02:52:44,017 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 02:52:44,017 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 02:52:44,017 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 02:52:44,017 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 02:52:44,018 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 02:52:44,018 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 02:52:44,018 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 02:52:44,018 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 02:52:44,018 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 02:52:44,018 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 02:52:44,018 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 02:52:44,018 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 02:52:44,018 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 02:52:44,019 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 02:52:44,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 02:52:44,019 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 02:52:44,019 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 02:52:44,019 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 02:52:44,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 02:52:44,019 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 02:52:44,019 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 02:52:44,019 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 02:52:44,019 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 02:52:44,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 02:52:44,019 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 02:52:44,020 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 02:52:44,020 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 02:52:44,020 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 02:52:44,020 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 02:52:44,020 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 02:52:44,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 02:52:44,219 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 02:52:44,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 02:52:44,221 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 02:52:44,221 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 02:52:44,222 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product09.cil.c [2023-04-02 02:52:45,180 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 02:52:45,430 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 02:52:45,431 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product09.cil.c [2023-04-02 02:52:45,450 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f0454788/db8cad11ca11418fac3bb626435d8deb/FLAG0a33111ec [2023-04-02 02:52:45,466 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f0454788/db8cad11ca11418fac3bb626435d8deb [2023-04-02 02:52:45,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 02:52:45,470 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 02:52:45,472 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 02:52:45,472 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 02:52:45,474 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 02:52:45,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 02:52:45" (1/1) ... [2023-04-02 02:52:45,476 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@405b9a0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:52:45, skipping insertion in model container [2023-04-02 02:52:45,476 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 02:52:45" (1/1) ... [2023-04-02 02:52:45,481 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 02:52:45,542 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 02:52:45,650 WARN L247 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_product09.cil.c[1545,1558] [2023-04-02 02:52:45,945 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 02:52:45,958 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 02:52:45,968 WARN L247 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_product09.cil.c[1545,1558] [2023-04-02 02:52:46,050 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 02:52:46,068 INFO L208 MainTranslator]: Completed translation [2023-04-02 02:52:46,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:52:46 WrapperNode [2023-04-02 02:52:46,069 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 02:52:46,069 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 02:52:46,069 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 02:52:46,069 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 02:52:46,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:52:46" (1/1) ... [2023-04-02 02:52:46,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:52:46" (1/1) ... [2023-04-02 02:52:46,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:52:46" (1/1) ... [2023-04-02 02:52:46,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:52:46" (1/1) ... [2023-04-02 02:52:46,146 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:52:46" (1/1) ... [2023-04-02 02:52:46,174 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:52:46" (1/1) ... [2023-04-02 02:52:46,178 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:52:46" (1/1) ... [2023-04-02 02:52:46,183 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:52:46" (1/1) ... [2023-04-02 02:52:46,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 02:52:46,208 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 02:52:46,209 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 02:52:46,209 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 02:52:46,209 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:52:46" (1/1) ... [2023-04-02 02:52:46,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 02:52:46,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:52:46,234 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) [2023-04-02 02:52:46,239 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 [2023-04-02 02:52:46,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 02:52:46,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 02:52:46,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-02 02:52:46,262 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 02:52:46,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-02 02:52:46,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-02 02:52:46,263 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-02 02:52:46,263 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-02 02:52:46,263 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-02 02:52:46,263 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-02 02:52:46,263 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-02 02:52:46,263 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-02 02:52:46,263 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-02 02:52:46,263 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-02 02:52:46,263 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-02 02:52:46,263 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2023-04-02 02:52:46,263 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-04-02 02:52:46,263 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2023-04-02 02:52:46,263 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-04-02 02:52:46,263 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2023-04-02 02:52:46,263 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2023-04-02 02:52:46,264 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-04-02 02:52:46,264 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2023-04-02 02:52:46,264 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-02 02:52:46,264 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2023-04-02 02:52:46,264 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2023-04-02 02:52:46,264 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2023-04-02 02:52:46,264 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-02 02:52:46,264 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2023-04-02 02:52:46,265 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-02 02:52:46,265 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-02 02:52:46,265 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 02:52:46,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2023-04-02 02:52:46,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2023-04-02 02:52:46,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2023-04-02 02:52:46,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2023-04-02 02:52:46,265 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2023-04-02 02:52:46,265 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2023-04-02 02:52:46,265 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2023-04-02 02:52:46,265 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-04-02 02:52:46,265 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-04-02 02:52:46,265 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2023-04-02 02:52:46,266 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-04-02 02:52:46,266 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-04-02 02:52:46,266 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-04-02 02:52:46,266 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-04-02 02:52:46,266 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2023-04-02 02:52:46,266 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2023-04-02 02:52:46,266 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-04-02 02:52:46,266 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-04-02 02:52:46,266 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2023-04-02 02:52:46,266 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-04-02 02:52:46,267 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-04-02 02:52:46,267 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2023-04-02 02:52:46,267 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-04-02 02:52:46,267 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-04-02 02:52:46,268 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-04-02 02:52:46,268 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-04-02 02:52:46,268 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2023-04-02 02:52:46,268 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2023-04-02 02:52:46,268 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2023-04-02 02:52:46,268 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-04-02 02:52:46,268 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2023-04-02 02:52:46,268 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-04-02 02:52:46,268 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2023-04-02 02:52:46,268 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-04-02 02:52:46,268 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2023-04-02 02:52:46,269 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-02 02:52:46,269 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2023-04-02 02:52:46,269 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2023-04-02 02:52:46,269 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-02 02:52:46,269 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-04-02 02:52:46,269 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-04-02 02:52:46,269 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-04-02 02:52:46,269 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 02:52:46,269 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 02:52:46,269 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 02:52:46,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 02:52:46,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 02:52:46,269 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-02 02:52:46,269 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-02 02:52:46,269 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-02 02:52:46,269 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-02 02:52:46,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-02 02:52:46,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-02 02:52:46,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 02:52:46,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-02 02:52:46,270 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-02 02:52:46,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 02:52:46,270 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-02 02:52:46,270 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-02 02:52:46,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 02:52:46,271 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-02 02:52:46,271 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-02 02:52:46,271 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-02 02:52:46,271 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-02 02:52:46,271 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-02 02:52:46,271 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-02 02:52:46,271 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-02 02:52:46,271 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-02 02:52:46,271 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2023-04-02 02:52:46,272 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-04-02 02:52:46,272 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-04-02 02:52:46,272 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-04-02 02:52:46,272 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2023-04-02 02:52:46,272 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-04-02 02:52:46,272 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2023-04-02 02:52:46,272 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2023-04-02 02:52:46,272 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-04-02 02:52:46,272 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-02 02:52:46,272 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2023-04-02 02:52:46,272 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2023-04-02 02:52:46,273 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-04-02 02:52:46,273 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-02 02:52:46,273 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2023-04-02 02:52:46,273 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2023-04-02 02:52:46,273 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2023-04-02 02:52:46,273 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2023-04-02 02:52:46,273 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2023-04-02 02:52:46,273 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-02 02:52:46,273 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2023-04-02 02:52:46,273 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-02 02:52:46,273 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2023-04-02 02:52:46,274 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2023-04-02 02:52:46,274 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-02 02:52:46,274 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-02 02:52:46,274 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 02:52:46,275 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-04-02 02:52:46,275 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-04-02 02:52:46,277 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2023-04-02 02:52:46,281 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2023-04-02 02:52:46,281 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2023-04-02 02:52:46,281 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2023-04-02 02:52:46,281 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2023-04-02 02:52:46,281 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-04-02 02:52:46,281 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-04-02 02:52:46,281 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2023-04-02 02:52:46,281 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-04-02 02:52:46,281 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-04-02 02:52:46,282 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-04-02 02:52:46,282 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2023-04-02 02:52:46,282 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-02 02:52:46,282 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-04-02 02:52:46,282 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-04-02 02:52:46,282 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2023-04-02 02:52:46,282 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2023-04-02 02:52:46,282 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-04-02 02:52:46,282 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2023-04-02 02:52:46,282 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-04-02 02:52:46,282 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-04-02 02:52:46,282 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2023-04-02 02:52:46,282 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-04-02 02:52:46,282 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2023-04-02 02:52:46,282 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-04-02 02:52:46,283 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-04-02 02:52:46,283 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2023-04-02 02:52:46,283 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-04-02 02:52:46,283 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2023-04-02 02:52:46,283 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2023-04-02 02:52:46,283 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-04-02 02:52:46,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 02:52:46,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 02:52:46,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 02:52:46,493 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 02:52:46,496 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 02:52:47,528 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 02:52:47,543 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 02:52:47,543 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-04-02 02:52:47,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 02:52:47 BoogieIcfgContainer [2023-04-02 02:52:47,546 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 02:52:47,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 02:52:47,549 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 02:52:47,551 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 02:52:47,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 02:52:45" (1/3) ... [2023-04-02 02:52:47,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d204485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 02:52:47, skipping insertion in model container [2023-04-02 02:52:47,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 02:52:46" (2/3) ... [2023-04-02 02:52:47,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d204485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 02:52:47, skipping insertion in model container [2023-04-02 02:52:47,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 02:52:47" (3/3) ... [2023-04-02 02:52:47,558 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product09.cil.c [2023-04-02 02:52:47,571 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 02:52:47,572 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 02:52:47,633 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 02:52:47,638 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5c6a4c9b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 02:52:47,639 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 02:52:47,646 INFO L276 IsEmpty]: Start isEmpty. Operand has 738 states, 515 states have (on average 1.6504854368932038) internal successors, (850), 542 states have internal predecessors, (850), 164 states have call successors, (164), 46 states have call predecessors, (164), 46 states have return successors, (164), 155 states have call predecessors, (164), 164 states have call successors, (164) [2023-04-02 02:52:47,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-04-02 02:52:47,665 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:52:47,666 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] [2023-04-02 02:52:47,666 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:52:47,670 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:52:47,670 INFO L85 PathProgramCache]: Analyzing trace with hash 410585673, now seen corresponding path program 1 times [2023-04-02 02:52:47,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:52:47,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440625980] [2023-04-02 02:52:47,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:52:47,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:52:47,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:48,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:52:48,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:48,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 02:52:48,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:48,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:52:48,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:48,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:52:48,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:48,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 02:52:48,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:48,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 02:52:48,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:48,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-04-02 02:52:48,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:48,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:52:48,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:48,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:48,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-04-02 02:52:48,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:48,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-04-02 02:52:48,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:48,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:48,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-04-02 02:52:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:48,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:48,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:48,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-04-02 02:52:48,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:48,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-04-02 02:52:48,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:48,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:48,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:48,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 02:52:48,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:48,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:48,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:48,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:48,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:48,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 02:52:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:48,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-04-02 02:52:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:48,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 02:52:48,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:48,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:48,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:48,945 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-02 02:52:48,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:52:48,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440625980] [2023-04-02 02:52:48,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440625980] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 02:52:48,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131113486] [2023-04-02 02:52:48,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:52:48,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:52:48,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:52:48,949 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) [2023-04-02 02:52:48,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 02:52:49,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:49,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 2858 conjuncts, 1 conjunts are in the unsatisfiable core [2023-04-02 02:52:49,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:52:49,475 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-04-02 02:52:49,476 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 02:52:49,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131113486] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 02:52:49,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 02:52:49,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [10] total 10 [2023-04-02 02:52:49,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035939695] [2023-04-02 02:52:49,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 02:52:49,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-02 02:52:49,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:52:49,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-02 02:52:49,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-04-02 02:52:49,506 INFO L87 Difference]: Start difference. First operand has 738 states, 515 states have (on average 1.6504854368932038) internal successors, (850), 542 states have internal predecessors, (850), 164 states have call successors, (164), 46 states have call predecessors, (164), 46 states have return successors, (164), 155 states have call predecessors, (164), 164 states have call successors, (164) Second operand has 2 states, 2 states have (on average 35.5) internal successors, (71), 2 states have internal predecessors, (71), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2023-04-02 02:52:49,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:52:49,568 INFO L93 Difference]: Finished difference Result 621 states and 997 transitions. [2023-04-02 02:52:49,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-02 02:52:49,570 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 35.5) internal successors, (71), 2 states have internal predecessors, (71), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) Word has length 138 [2023-04-02 02:52:49,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:52:49,587 INFO L225 Difference]: With dead ends: 621 [2023-04-02 02:52:49,587 INFO L226 Difference]: Without dead ends: 584 [2023-04-02 02:52:49,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-04-02 02:52:49,592 INFO L413 NwaCegarLoop]: 952 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, 952 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 [2023-04-02 02:52:49,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 952 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 02:52:49,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2023-04-02 02:52:49,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 584. [2023-04-02 02:52:49,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 433 states have (on average 1.6812933025404158) internal successors, (728), 452 states have internal predecessors, (728), 111 states have call successors, (111), 43 states have call predecessors, (111), 39 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2023-04-02 02:52:49,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 942 transitions. [2023-04-02 02:52:49,679 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 942 transitions. Word has length 138 [2023-04-02 02:52:49,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:52:49,682 INFO L495 AbstractCegarLoop]: Abstraction has 584 states and 942 transitions. [2023-04-02 02:52:49,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 35.5) internal successors, (71), 2 states have internal predecessors, (71), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2023-04-02 02:52:49,683 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 942 transitions. [2023-04-02 02:52:49,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-04-02 02:52:49,690 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:52:49,690 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] [2023-04-02 02:52:49,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 02:52:49,899 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 [2023-04-02 02:52:49,900 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:52:49,900 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:52:49,901 INFO L85 PathProgramCache]: Analyzing trace with hash 796427388, now seen corresponding path program 1 times [2023-04-02 02:52:49,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:52:49,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741174794] [2023-04-02 02:52:49,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:52:49,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:52:49,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:50,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:52:50,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:50,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 02:52:50,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:50,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:52:50,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:50,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:52:50,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:50,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 02:52:50,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:50,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 02:52:50,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:50,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-04-02 02:52:50,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:50,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:52:50,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:50,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:50,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:50,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-04-02 02:52:50,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:50,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-04-02 02:52:50,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:50,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:50,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:50,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-04-02 02:52:50,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:50,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:50,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-04-02 02:52:50,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:50,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-04-02 02:52:50,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:50,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:50,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:50,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 02:52:50,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:50,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:50,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:50,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:50,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:50,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:50,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:50,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 02:52:50,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:50,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-04-02 02:52:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:50,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 02:52:50,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:50,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:50,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:50,733 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-02 02:52:50,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:52:50,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741174794] [2023-04-02 02:52:50,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741174794] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 02:52:50,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266503652] [2023-04-02 02:52:50,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:52:50,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:52:50,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:52:50,735 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) [2023-04-02 02:52:50,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 02:52:51,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:51,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 2861 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-02 02:52:51,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:52:51,202 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-02 02:52:51,202 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 02:52:51,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266503652] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 02:52:51,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 02:52:51,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2023-04-02 02:52:51,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769070138] [2023-04-02 02:52:51,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 02:52:51,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 02:52:51,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:52:51,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 02:52:51,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-04-02 02:52:51,204 INFO L87 Difference]: Start difference. First operand 584 states and 942 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-04-02 02:52:51,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:52:51,259 INFO L93 Difference]: Finished difference Result 1140 states and 1857 transitions. [2023-04-02 02:52:51,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 02:52:51,260 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 140 [2023-04-02 02:52:51,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:52:51,263 INFO L225 Difference]: With dead ends: 1140 [2023-04-02 02:52:51,263 INFO L226 Difference]: Without dead ends: 584 [2023-04-02 02:52:51,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-04-02 02:52:51,266 INFO L413 NwaCegarLoop]: 928 mSDtfsCounter, 14 mSDsluCounter, 1849 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2777 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 [2023-04-02 02:52:51,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2777 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 02:52:51,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2023-04-02 02:52:51,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 584. [2023-04-02 02:52:51,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 433 states have (on average 1.6789838337182448) internal successors, (727), 452 states have internal predecessors, (727), 111 states have call successors, (111), 43 states have call predecessors, (111), 39 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2023-04-02 02:52:51,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 941 transitions. [2023-04-02 02:52:51,293 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 941 transitions. Word has length 140 [2023-04-02 02:52:51,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:52:51,294 INFO L495 AbstractCegarLoop]: Abstraction has 584 states and 941 transitions. [2023-04-02 02:52:51,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-04-02 02:52:51,294 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 941 transitions. [2023-04-02 02:52:51,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-04-02 02:52:51,298 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:52:51,298 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] [2023-04-02 02:52:51,309 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-02 02:52:51,506 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 [2023-04-02 02:52:51,506 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:52:51,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:52:51,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1843319286, now seen corresponding path program 1 times [2023-04-02 02:52:51,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:52:51,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347767061] [2023-04-02 02:52:51,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:52:51,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:52:51,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:51,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:52:51,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:51,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 02:52:51,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:51,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:52:51,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:51,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:52:51,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:51,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 02:52:51,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:51,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 02:52:51,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:51,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-04-02 02:52:51,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:52,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:52:52,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:52,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:52,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:52,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 02:52:52,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:52,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-04-02 02:52:52,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:52,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:52,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:52,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-04-02 02:52:52,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:52,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:52,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:52,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 02:52:52,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:52,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-04-02 02:52:52,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:52,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:52,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-04-02 02:52:52,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:52,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:52,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:52,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:52,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:52,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:52,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:52,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 02:52:52,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:52,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-04-02 02:52:52,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:52,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 02:52:52,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:52,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:52,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:52,238 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-02 02:52:52,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:52:52,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347767061] [2023-04-02 02:52:52,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347767061] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 02:52:52,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657976785] [2023-04-02 02:52:52,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:52:52,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:52:52,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:52:52,241 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) [2023-04-02 02:52:52,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-02 02:52:52,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:52,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 2863 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-02 02:52:52,664 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:52:52,690 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-02 02:52:52,690 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 02:52:52,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657976785] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 02:52:52,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 02:52:52,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2023-04-02 02:52:52,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213662671] [2023-04-02 02:52:52,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 02:52:52,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 02:52:52,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:52:52,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 02:52:52,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-04-02 02:52:52,692 INFO L87 Difference]: Start difference. First operand 584 states and 941 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-04-02 02:52:52,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:52:52,739 INFO L93 Difference]: Finished difference Result 1140 states and 1855 transitions. [2023-04-02 02:52:52,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 02:52:52,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 142 [2023-04-02 02:52:52,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:52:52,743 INFO L225 Difference]: With dead ends: 1140 [2023-04-02 02:52:52,743 INFO L226 Difference]: Without dead ends: 584 [2023-04-02 02:52:52,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-04-02 02:52:52,745 INFO L413 NwaCegarLoop]: 928 mSDtfsCounter, 12 mSDsluCounter, 1849 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2777 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 [2023-04-02 02:52:52,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2777 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 02:52:52,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2023-04-02 02:52:52,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 584. [2023-04-02 02:52:52,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 433 states have (on average 1.6766743648960738) internal successors, (726), 452 states have internal predecessors, (726), 111 states have call successors, (111), 43 states have call predecessors, (111), 39 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2023-04-02 02:52:52,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 940 transitions. [2023-04-02 02:52:52,784 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 940 transitions. Word has length 142 [2023-04-02 02:52:52,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:52:52,784 INFO L495 AbstractCegarLoop]: Abstraction has 584 states and 940 transitions. [2023-04-02 02:52:52,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-04-02 02:52:52,786 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 940 transitions. [2023-04-02 02:52:52,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-04-02 02:52:52,789 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:52:52,789 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] [2023-04-02 02:52:52,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-02 02:52:53,002 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 [2023-04-02 02:52:53,002 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:52:53,003 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:52:53,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1734000388, now seen corresponding path program 1 times [2023-04-02 02:52:53,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:52:53,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001067695] [2023-04-02 02:52:53,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:52:53,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:52:53,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:53,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:52:53,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:53,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 02:52:53,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:53,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:52:53,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:53,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:52:53,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:53,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 02:52:53,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:53,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 02:52:53,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:53,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-04-02 02:52:53,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:53,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:52:53,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:53,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:53,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:53,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:52:53,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:53,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-04-02 02:52:53,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:53,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:53,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:53,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-04-02 02:52:53,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:53,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:53,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:53,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:52:53,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:53,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-04-02 02:52:53,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:53,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:53,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:53,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-04-02 02:52:53,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:53,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:53,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:53,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:53,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:53,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:53,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:53,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 02:52:53,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:53,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-04-02 02:52:53,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:53,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 02:52:53,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:53,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:53,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:53,668 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-02 02:52:53,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:52:53,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001067695] [2023-04-02 02:52:53,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001067695] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 02:52:53,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064383751] [2023-04-02 02:52:53,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:52:53,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:52:53,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:52:53,669 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) [2023-04-02 02:52:53,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-02 02:52:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:54,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 2865 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-02 02:52:54,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:52:54,155 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-02 02:52:54,156 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 02:52:54,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064383751] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 02:52:54,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 02:52:54,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2023-04-02 02:52:54,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414169923] [2023-04-02 02:52:54,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 02:52:54,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 02:52:54,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:52:54,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 02:52:54,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-04-02 02:52:54,157 INFO L87 Difference]: Start difference. First operand 584 states and 940 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-04-02 02:52:54,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:52:54,210 INFO L93 Difference]: Finished difference Result 1147 states and 1862 transitions. [2023-04-02 02:52:54,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 02:52:54,211 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 144 [2023-04-02 02:52:54,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:52:54,214 INFO L225 Difference]: With dead ends: 1147 [2023-04-02 02:52:54,214 INFO L226 Difference]: Without dead ends: 593 [2023-04-02 02:52:54,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-04-02 02:52:54,217 INFO L413 NwaCegarLoop]: 928 mSDtfsCounter, 20 mSDsluCounter, 1849 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2777 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 [2023-04-02 02:52:54,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2777 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 02:52:54,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2023-04-02 02:52:54,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2023-04-02 02:52:54,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 441 states have (on average 1.6734693877551021) internal successors, (738), 460 states have internal predecessors, (738), 111 states have call successors, (111), 44 states have call predecessors, (111), 40 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2023-04-02 02:52:54,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 952 transitions. [2023-04-02 02:52:54,235 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 952 transitions. Word has length 144 [2023-04-02 02:52:54,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:52:54,235 INFO L495 AbstractCegarLoop]: Abstraction has 593 states and 952 transitions. [2023-04-02 02:52:54,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-04-02 02:52:54,236 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 952 transitions. [2023-04-02 02:52:54,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-04-02 02:52:54,238 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:52:54,238 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] [2023-04-02 02:52:54,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-02 02:52:54,450 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 [2023-04-02 02:52:54,451 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:52:54,451 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:52:54,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1695231543, now seen corresponding path program 1 times [2023-04-02 02:52:54,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:52:54,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14610799] [2023-04-02 02:52:54,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:52:54,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:52:54,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:54,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:52:54,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:54,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 02:52:54,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:54,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:52:54,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:54,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:52:54,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:54,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 02:52:54,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:54,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 02:52:54,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:54,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-04-02 02:52:54,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:55,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:52:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:55,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:55,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:55,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-04-02 02:52:55,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:55,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-04-02 02:52:55,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:55,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:55,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:55,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-04-02 02:52:55,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:55,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:55,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:55,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:52:55,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:55,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-04-02 02:52:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:55,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:55,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:55,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-04-02 02:52:55,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:55,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:55,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:55,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:55,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:55,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:55,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:55,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 02:52:55,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:55,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-04-02 02:52:55,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:55,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 02:52:55,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:55,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:55,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:55,155 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-02 02:52:55,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:52:55,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14610799] [2023-04-02 02:52:55,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14610799] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 02:52:55,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117198608] [2023-04-02 02:52:55,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:52:55,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:52:55,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:52:55,157 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) [2023-04-02 02:52:55,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-02 02:52:55,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:55,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 2866 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-02 02:52:55,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:52:55,616 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-02 02:52:55,616 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 02:52:55,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117198608] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 02:52:55,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 02:52:55,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2023-04-02 02:52:55,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259939629] [2023-04-02 02:52:55,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 02:52:55,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 02:52:55,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:52:55,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 02:52:55,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-04-02 02:52:55,618 INFO L87 Difference]: Start difference. First operand 593 states and 952 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, (27), 2 states have call predecessors, (27), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-04-02 02:52:55,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:52:55,669 INFO L93 Difference]: Finished difference Result 1149 states and 1863 transitions. [2023-04-02 02:52:55,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 02:52:55,670 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, (27), 2 states have call predecessors, (27), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 145 [2023-04-02 02:52:55,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:52:55,673 INFO L225 Difference]: With dead ends: 1149 [2023-04-02 02:52:55,674 INFO L226 Difference]: Without dead ends: 593 [2023-04-02 02:52:55,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-04-02 02:52:55,677 INFO L413 NwaCegarLoop]: 928 mSDtfsCounter, 18 mSDsluCounter, 1849 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2777 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 [2023-04-02 02:52:55,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2777 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 02:52:55,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2023-04-02 02:52:55,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2023-04-02 02:52:55,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 441 states have (on average 1.6712018140589568) internal successors, (737), 460 states have internal predecessors, (737), 111 states have call successors, (111), 44 states have call predecessors, (111), 40 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2023-04-02 02:52:55,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 951 transitions. [2023-04-02 02:52:55,695 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 951 transitions. Word has length 145 [2023-04-02 02:52:55,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:52:55,696 INFO L495 AbstractCegarLoop]: Abstraction has 593 states and 951 transitions. [2023-04-02 02:52:55,697 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, (27), 2 states have call predecessors, (27), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-04-02 02:52:55,697 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 951 transitions. [2023-04-02 02:52:55,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-04-02 02:52:55,699 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:52:55,699 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] [2023-04-02 02:52:55,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-02 02:52:55,910 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 [2023-04-02 02:52:55,912 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:52:55,912 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:52:55,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1493638760, now seen corresponding path program 1 times [2023-04-02 02:52:55,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:52:55,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161330956] [2023-04-02 02:52:55,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:52:55,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:52:55,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:56,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:52:56,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:56,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 02:52:56,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:56,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:52:56,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:56,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:52:56,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:56,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 02:52:56,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:56,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 02:52:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:56,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-04-02 02:52:56,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:56,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:52:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:56,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:56,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:56,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-04-02 02:52:56,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:56,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-04-02 02:52:56,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:56,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:56,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 02:52:56,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:56,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:56,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:56,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:52:56,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:56,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-04-02 02:52:56,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:56,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:56,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-04-02 02:52:56,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:56,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:56,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:56,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:56,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:56,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:56,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:56,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 02:52:56,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:56,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-04-02 02:52:56,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:56,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 02:52:56,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:56,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:56,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:56,564 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-02 02:52:56,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:52:56,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161330956] [2023-04-02 02:52:56,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161330956] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 02:52:56,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138701596] [2023-04-02 02:52:56,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:52:56,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:52:56,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:52:56,566 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) [2023-04-02 02:52:56,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-02 02:52:56,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:57,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 2867 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-02 02:52:57,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:52:57,035 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-02 02:52:57,035 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 02:52:57,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138701596] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 02:52:57,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 02:52:57,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2023-04-02 02:52:57,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364872841] [2023-04-02 02:52:57,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 02:52:57,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 02:52:57,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:52:57,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 02:52:57,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-04-02 02:52:57,038 INFO L87 Difference]: Start difference. First operand 593 states and 951 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, (27), 2 states have call predecessors, (27), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-04-02 02:52:57,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:52:57,082 INFO L93 Difference]: Finished difference Result 1149 states and 1862 transitions. [2023-04-02 02:52:57,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 02:52:57,082 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, (27), 2 states have call predecessors, (27), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 146 [2023-04-02 02:52:57,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:52:57,086 INFO L225 Difference]: With dead ends: 1149 [2023-04-02 02:52:57,086 INFO L226 Difference]: Without dead ends: 593 [2023-04-02 02:52:57,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-04-02 02:52:57,089 INFO L413 NwaCegarLoop]: 928 mSDtfsCounter, 17 mSDsluCounter, 1849 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2777 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 [2023-04-02 02:52:57,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2777 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 02:52:57,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2023-04-02 02:52:57,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2023-04-02 02:52:57,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 441 states have (on average 1.6689342403628118) internal successors, (736), 460 states have internal predecessors, (736), 111 states have call successors, (111), 44 states have call predecessors, (111), 40 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2023-04-02 02:52:57,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 950 transitions. [2023-04-02 02:52:57,105 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 950 transitions. Word has length 146 [2023-04-02 02:52:57,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:52:57,106 INFO L495 AbstractCegarLoop]: Abstraction has 593 states and 950 transitions. [2023-04-02 02:52:57,106 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, (27), 2 states have call predecessors, (27), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-04-02 02:52:57,106 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 950 transitions. [2023-04-02 02:52:57,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-04-02 02:52:57,108 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:52:57,108 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] [2023-04-02 02:52:57,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-02 02:52:57,317 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 [2023-04-02 02:52:57,317 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:52:57,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:52:57,317 INFO L85 PathProgramCache]: Analyzing trace with hash 539471195, now seen corresponding path program 1 times [2023-04-02 02:52:57,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:52:57,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192405493] [2023-04-02 02:52:57,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:52:57,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:52:57,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:57,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:52:57,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:57,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 02:52:57,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:57,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:52:57,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:57,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:52:57,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:57,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 02:52:57,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:57,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 02:52:57,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:57,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-04-02 02:52:57,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:57,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:52:57,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:57,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:57,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:57,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:52:58,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:58,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-04-02 02:52:58,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:58,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:58,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:58,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-04-02 02:52:58,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:58,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:58,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:58,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:52:58,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:58,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-04-02 02:52:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:58,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:58,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:58,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 02:52:58,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:58,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:58,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:58,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:58,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:58,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:58,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:58,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 02:52:58,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:58,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-04-02 02:52:58,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:58,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 02:52:58,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:58,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:58,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:58,116 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-02 02:52:58,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:52:58,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192405493] [2023-04-02 02:52:58,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192405493] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 02:52:58,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021541756] [2023-04-02 02:52:58,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:52:58,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:52:58,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:52:58,118 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) [2023-04-02 02:52:58,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-02 02:52:58,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:58,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 2868 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-02 02:52:58,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:52:58,591 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 02:52:58,591 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 02:52:58,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021541756] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 02:52:58,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 02:52:58,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2023-04-02 02:52:58,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327302220] [2023-04-02 02:52:58,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 02:52:58,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 02:52:58,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:52:58,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 02:52:58,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-04-02 02:52:58,593 INFO L87 Difference]: Start difference. First operand 593 states and 950 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-04-02 02:52:58,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:52:58,739 INFO L93 Difference]: Finished difference Result 1148 states and 1862 transitions. [2023-04-02 02:52:58,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 02:52:58,739 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), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 147 [2023-04-02 02:52:58,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:52:58,742 INFO L225 Difference]: With dead ends: 1148 [2023-04-02 02:52:58,742 INFO L226 Difference]: Without dead ends: 593 [2023-04-02 02:52:58,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-04-02 02:52:58,745 INFO L413 NwaCegarLoop]: 880 mSDtfsCounter, 70 mSDsluCounter, 1737 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 2617 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 02:52:58,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 2617 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 02:52:58,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2023-04-02 02:52:58,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2023-04-02 02:52:58,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 441 states have (on average 1.657596371882086) internal successors, (731), 460 states have internal predecessors, (731), 111 states have call successors, (111), 44 states have call predecessors, (111), 40 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2023-04-02 02:52:58,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 945 transitions. [2023-04-02 02:52:58,763 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 945 transitions. Word has length 147 [2023-04-02 02:52:58,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:52:58,764 INFO L495 AbstractCegarLoop]: Abstraction has 593 states and 945 transitions. [2023-04-02 02:52:58,764 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), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-04-02 02:52:58,764 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 945 transitions. [2023-04-02 02:52:58,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-04-02 02:52:58,766 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:52:58,766 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] [2023-04-02 02:52:58,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-02 02:52:58,972 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 [2023-04-02 02:52:58,972 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:52:58,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:52:58,973 INFO L85 PathProgramCache]: Analyzing trace with hash 887001261, now seen corresponding path program 1 times [2023-04-02 02:52:58,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:52:58,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578792284] [2023-04-02 02:52:58,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:52:58,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:52:58,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:59,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:52:59,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:59,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 02:52:59,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:59,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:52:59,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:59,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:52:59,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:59,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 02:52:59,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:59,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 02:52:59,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:59,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-04-02 02:52:59,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:59,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:52:59,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:59,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:59,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:59,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:52:59,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:59,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-04-02 02:52:59,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:59,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:59,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:59,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-04-02 02:52:59,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:59,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:59,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:59,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:52:59,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:59,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-04-02 02:52:59,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:59,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:59,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:59,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-04-02 02:52:59,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:59,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:59,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:59,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:59,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:59,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:59,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:59,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 02:52:59,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:59,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-04-02 02:52:59,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:59,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 02:52:59,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:59,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:52:59,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:52:59,796 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-02 02:52:59,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:52:59,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578792284] [2023-04-02 02:52:59,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578792284] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 02:52:59,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590934155] [2023-04-02 02:52:59,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:52:59,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:52:59,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:52:59,798 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) [2023-04-02 02:52:59,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-02 02:53:00,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:00,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 2870 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-02 02:53:00,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:53:00,239 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 02:53:00,239 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 02:53:00,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590934155] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 02:53:00,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 02:53:00,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2023-04-02 02:53:00,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335076032] [2023-04-02 02:53:00,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 02:53:00,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 02:53:00,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:53:00,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 02:53:00,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-04-02 02:53:00,243 INFO L87 Difference]: Start difference. First operand 593 states and 945 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-04-02 02:53:00,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:53:00,339 INFO L93 Difference]: Finished difference Result 1148 states and 1852 transitions. [2023-04-02 02:53:00,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 02:53:00,339 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), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 149 [2023-04-02 02:53:00,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:53:00,342 INFO L225 Difference]: With dead ends: 1148 [2023-04-02 02:53:00,342 INFO L226 Difference]: Without dead ends: 593 [2023-04-02 02:53:00,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-04-02 02:53:00,345 INFO L413 NwaCegarLoop]: 878 mSDtfsCounter, 65 mSDsluCounter, 1737 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 2615 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 02:53:00,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 2615 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 02:53:00,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2023-04-02 02:53:00,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2023-04-02 02:53:00,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 441 states have (on average 1.6462585034013606) internal successors, (726), 460 states have internal predecessors, (726), 111 states have call successors, (111), 44 states have call predecessors, (111), 40 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2023-04-02 02:53:00,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 940 transitions. [2023-04-02 02:53:00,358 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 940 transitions. Word has length 149 [2023-04-02 02:53:00,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:53:00,358 INFO L495 AbstractCegarLoop]: Abstraction has 593 states and 940 transitions. [2023-04-02 02:53:00,359 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), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-04-02 02:53:00,359 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 940 transitions. [2023-04-02 02:53:00,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-04-02 02:53:00,361 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:53:00,362 INFO L195 NwaCegarLoop]: trace histogram [2, 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] [2023-04-02 02:53:00,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-04-02 02:53:00,573 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 [2023-04-02 02:53:00,574 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:53:00,574 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:53:00,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1708886575, now seen corresponding path program 1 times [2023-04-02 02:53:00,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:53:00,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77939686] [2023-04-02 02:53:00,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:53:00,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:53:00,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:00,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:53:00,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:00,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 02:53:00,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:00,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:53:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:00,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:53:00,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:00,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 02:53:00,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:00,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 02:53:00,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:01,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-04-02 02:53:01,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:01,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:53:01,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:01,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:01,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:01,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:53:01,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:01,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-04-02 02:53:01,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:01,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:01,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:01,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-04-02 02:53:01,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:01,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:01,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:01,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:53:01,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:01,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-04-02 02:53:01,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:01,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:01,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:01,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-04-02 02:53:01,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:01,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:01,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:01,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:01,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:01,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:01,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:01,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 02:53:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:01,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-04-02 02:53:01,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:01,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 02:53:01,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:01,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:01,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:01,300 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-02 02:53:01,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:53:01,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77939686] [2023-04-02 02:53:01,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77939686] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 02:53:01,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404751037] [2023-04-02 02:53:01,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:53:01,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:53:01,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:53:01,302 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) [2023-04-02 02:53:01,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-02 02:53:01,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:01,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 2872 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-02 02:53:01,688 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:53:01,715 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 02:53:01,716 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 02:53:01,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404751037] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 02:53:01,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 02:53:01,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2023-04-02 02:53:01,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516187879] [2023-04-02 02:53:01,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 02:53:01,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 02:53:01,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:53:01,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 02:53:01,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-04-02 02:53:01,718 INFO L87 Difference]: Start difference. First operand 593 states and 940 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-04-02 02:53:01,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:53:01,845 INFO L93 Difference]: Finished difference Result 1184 states and 1901 transitions. [2023-04-02 02:53:01,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 02:53:01,846 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), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 151 [2023-04-02 02:53:01,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:53:01,848 INFO L225 Difference]: With dead ends: 1184 [2023-04-02 02:53:01,848 INFO L226 Difference]: Without dead ends: 632 [2023-04-02 02:53:01,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-04-02 02:53:01,851 INFO L413 NwaCegarLoop]: 888 mSDtfsCounter, 115 mSDsluCounter, 1737 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 2625 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 02:53:01,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 2625 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 02:53:01,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2023-04-02 02:53:01,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 632. [2023-04-02 02:53:01,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 478 states have (on average 1.6485355648535565) internal successors, (788), 497 states have internal predecessors, (788), 112 states have call successors, (112), 45 states have call predecessors, (112), 41 states have return successors, (104), 101 states have call predecessors, (104), 104 states have call successors, (104) [2023-04-02 02:53:01,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 1004 transitions. [2023-04-02 02:53:01,865 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 1004 transitions. Word has length 151 [2023-04-02 02:53:01,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:53:01,865 INFO L495 AbstractCegarLoop]: Abstraction has 632 states and 1004 transitions. [2023-04-02 02:53:01,865 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), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-04-02 02:53:01,865 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 1004 transitions. [2023-04-02 02:53:01,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-04-02 02:53:01,867 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:53:01,867 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] [2023-04-02 02:53:01,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-04-02 02:53:02,078 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 [2023-04-02 02:53:02,079 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:53:02,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:53:02,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1935834840, now seen corresponding path program 1 times [2023-04-02 02:53:02,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:53:02,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988494343] [2023-04-02 02:53:02,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:53:02,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:53:02,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:02,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:53:02,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:02,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 02:53:02,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:02,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:53:02,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:02,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:53:02,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:02,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 02:53:02,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:02,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 02:53:02,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:02,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-04-02 02:53:02,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:02,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:53:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:02,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:02,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:02,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:53:02,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:02,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 02:53:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:02,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:02,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:02,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-02 02:53:02,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:02,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:02,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:02,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:53:02,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:02,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-04-02 02:53:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:02,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:02,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:02,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 02:53:02,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:02,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:02,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:02,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:02,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:02,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:02,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:02,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 02:53:02,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:02,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-04-02 02:53:02,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:02,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 02:53:02,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:02,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:02,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:02,787 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-02 02:53:02,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:53:02,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988494343] [2023-04-02 02:53:02,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988494343] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 02:53:02,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409486629] [2023-04-02 02:53:02,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:53:02,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:53:02,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:53:02,788 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) [2023-04-02 02:53:02,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-04-02 02:53:03,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:03,170 INFO L262 TraceCheckSpWp]: Trace formula consists of 2873 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-02 02:53:03,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:53:03,215 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 02:53:03,215 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 02:53:03,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409486629] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 02:53:03,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 02:53:03,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2023-04-02 02:53:03,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254285734] [2023-04-02 02:53:03,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 02:53:03,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 02:53:03,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:53:03,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 02:53:03,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-04-02 02:53:03,217 INFO L87 Difference]: Start difference. First operand 632 states and 1004 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-04-02 02:53:03,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:53:03,322 INFO L93 Difference]: Finished difference Result 1187 states and 1904 transitions. [2023-04-02 02:53:03,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 02:53:03,323 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), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 152 [2023-04-02 02:53:03,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:53:03,326 INFO L225 Difference]: With dead ends: 1187 [2023-04-02 02:53:03,326 INFO L226 Difference]: Without dead ends: 632 [2023-04-02 02:53:03,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-04-02 02:53:03,328 INFO L413 NwaCegarLoop]: 888 mSDtfsCounter, 109 mSDsluCounter, 1737 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 2625 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 02:53:03,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 2625 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 02:53:03,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2023-04-02 02:53:03,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 632. [2023-04-02 02:53:03,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 478 states have (on average 1.6380753138075315) internal successors, (783), 497 states have internal predecessors, (783), 112 states have call successors, (112), 45 states have call predecessors, (112), 41 states have return successors, (104), 101 states have call predecessors, (104), 104 states have call successors, (104) [2023-04-02 02:53:03,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 999 transitions. [2023-04-02 02:53:03,340 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 999 transitions. Word has length 152 [2023-04-02 02:53:03,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:53:03,341 INFO L495 AbstractCegarLoop]: Abstraction has 632 states and 999 transitions. [2023-04-02 02:53:03,341 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), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-04-02 02:53:03,341 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 999 transitions. [2023-04-02 02:53:03,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-04-02 02:53:03,343 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:53:03,343 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] [2023-04-02 02:53:03,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-04-02 02:53:03,551 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 [2023-04-02 02:53:03,551 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:53:03,552 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:53:03,552 INFO L85 PathProgramCache]: Analyzing trace with hash -658930073, now seen corresponding path program 1 times [2023-04-02 02:53:03,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:53:03,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120687673] [2023-04-02 02:53:03,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:53:03,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:53:03,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:03,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:53:03,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:03,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 02:53:03,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:03,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:53:03,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:03,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:53:03,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:03,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 02:53:03,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:03,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 02:53:03,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:03,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-04-02 02:53:03,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:04,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:53:04,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:04,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:04,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:04,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:53:04,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:04,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 02:53:04,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:04,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:04,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:04,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-02 02:53:04,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:04,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:04,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:04,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:53:04,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:04,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-04-02 02:53:04,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:04,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:04,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:04,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 02:53:04,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:04,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:04,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:04,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:04,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:04,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:04,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:04,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 02:53:04,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:04,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-04-02 02:53:04,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:04,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 02:53:04,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:04,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:04,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:04,321 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 02:53:04,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:53:04,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120687673] [2023-04-02 02:53:04,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120687673] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 02:53:04,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 02:53:04,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-04-02 02:53:04,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854284958] [2023-04-02 02:53:04,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 02:53:04,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 02:53:04,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:53:04,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 02:53:04,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-04-02 02:53:04,322 INFO L87 Difference]: Start difference. First operand 632 states and 999 transitions. Second operand has 15 states, 14 states have (on average 6.357142857142857) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (28), 8 states have call predecessors, (28), 4 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) [2023-04-02 02:53:13,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:53:13,775 INFO L93 Difference]: Finished difference Result 1513 states and 2590 transitions. [2023-04-02 02:53:13,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-04-02 02:53:13,776 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 6.357142857142857) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (28), 8 states have call predecessors, (28), 4 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) Word has length 152 [2023-04-02 02:53:13,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:53:13,781 INFO L225 Difference]: With dead ends: 1513 [2023-04-02 02:53:13,781 INFO L226 Difference]: Without dead ends: 1033 [2023-04-02 02:53:13,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=349, Invalid=1211, Unknown=0, NotChecked=0, Total=1560 [2023-04-02 02:53:13,783 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 1749 mSDsluCounter, 1205 mSDsCounter, 0 mSdLazyCounter, 9905 mSolverCounterSat, 663 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1809 SdHoareTripleChecker+Valid, 1342 SdHoareTripleChecker+Invalid, 10568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 663 IncrementalHoareTripleChecker+Valid, 9905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2023-04-02 02:53:13,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1809 Valid, 1342 Invalid, 10568 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [663 Valid, 9905 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2023-04-02 02:53:13,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2023-04-02 02:53:13,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 639. [2023-04-02 02:53:13,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 481 states have (on average 1.634095634095634) internal successors, (786), 502 states have internal predecessors, (786), 114 states have call successors, (114), 45 states have call predecessors, (114), 43 states have return successors, (108), 103 states have call predecessors, (108), 106 states have call successors, (108) [2023-04-02 02:53:13,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 1008 transitions. [2023-04-02 02:53:13,935 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 1008 transitions. Word has length 152 [2023-04-02 02:53:13,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:53:13,935 INFO L495 AbstractCegarLoop]: Abstraction has 639 states and 1008 transitions. [2023-04-02 02:53:13,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.357142857142857) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (28), 8 states have call predecessors, (28), 4 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) [2023-04-02 02:53:13,936 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 1008 transitions. [2023-04-02 02:53:13,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-04-02 02:53:13,938 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:53:13,938 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, 1, 1, 1, 1, 1] [2023-04-02 02:53:13,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 02:53:13,938 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:53:13,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:53:13,938 INFO L85 PathProgramCache]: Analyzing trace with hash -733422800, now seen corresponding path program 1 times [2023-04-02 02:53:13,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:53:13,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936997965] [2023-04-02 02:53:13,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:53:13,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:53:13,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:14,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:53:14,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:14,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 02:53:14,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:14,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:53:14,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:14,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:53:14,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:14,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 02:53:14,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:14,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 02:53:14,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:14,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-04-02 02:53:14,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:14,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:53:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:14,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:14,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:14,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:53:14,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:14,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 02:53:14,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:14,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:14,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:14,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-02 02:53:14,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:14,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:14,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:14,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-04-02 02:53:14,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:14,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-04-02 02:53:14,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:14,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:14,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:14,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 02:53:14,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:14,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:14,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:14,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:14,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:14,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:14,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:14,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 02:53:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:14,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-04-02 02:53:14,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:14,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 02:53:14,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:14,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:14,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:14,517 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-02 02:53:14,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:53:14,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936997965] [2023-04-02 02:53:14,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936997965] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 02:53:14,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 02:53:14,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 02:53:14,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062498871] [2023-04-02 02:53:14,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 02:53:14,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 02:53:14,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:53:14,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 02:53:14,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-04-02 02:53:14,519 INFO L87 Difference]: Start difference. First operand 639 states and 1008 transitions. Second operand has 10 states, 10 states have (on average 9.1) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (27), 8 states have call predecessors, (27), 3 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) [2023-04-02 02:53:21,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:53:21,554 INFO L93 Difference]: Finished difference Result 1529 states and 2589 transitions. [2023-04-02 02:53:21,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 02:53:21,554 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (27), 8 states have call predecessors, (27), 3 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) Word has length 153 [2023-04-02 02:53:21,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:53:21,568 INFO L225 Difference]: With dead ends: 1529 [2023-04-02 02:53:21,568 INFO L226 Difference]: Without dead ends: 945 [2023-04-02 02:53:21,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2023-04-02 02:53:21,572 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 1124 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 4811 mSolverCounterSat, 422 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1184 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 5233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 422 IncrementalHoareTripleChecker+Valid, 4811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-04-02 02:53:21,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1184 Valid, 679 Invalid, 5233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [422 Valid, 4811 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-04-02 02:53:21,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2023-04-02 02:53:21,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 603. [2023-04-02 02:53:21,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 449 states have (on average 1.6124721603563474) internal successors, (724), 468 states have internal predecessors, (724), 112 states have call successors, (112), 45 states have call predecessors, (112), 41 states have return successors, (104), 101 states have call predecessors, (104), 104 states have call successors, (104) [2023-04-02 02:53:21,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 940 transitions. [2023-04-02 02:53:21,686 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 940 transitions. Word has length 153 [2023-04-02 02:53:21,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:53:21,687 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 940 transitions. [2023-04-02 02:53:21,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (27), 8 states have call predecessors, (27), 3 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) [2023-04-02 02:53:21,687 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 940 transitions. [2023-04-02 02:53:21,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-04-02 02:53:21,689 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:53:21,690 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] [2023-04-02 02:53:21,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 02:53:21,690 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:53:21,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:53:21,690 INFO L85 PathProgramCache]: Analyzing trace with hash 184928387, now seen corresponding path program 1 times [2023-04-02 02:53:21,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:53:21,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197423106] [2023-04-02 02:53:21,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:53:21,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:53:21,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:21,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:53:21,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:21,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 02:53:21,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:21,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:53:21,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:21,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:53:21,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:21,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 02:53:21,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:21,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 02:53:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:22,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-04-02 02:53:22,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:22,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:53:22,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:22,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:22,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:22,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:53:22,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:22,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 02:53:22,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:22,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:22,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:22,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-02 02:53:22,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:22,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:22,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:22,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:53:22,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:22,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-04-02 02:53:22,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:22,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:22,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:22,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-04-02 02:53:22,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:22,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:22,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:22,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:22,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:22,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:22,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:22,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 02:53:22,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:22,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-04-02 02:53:22,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:22,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 02:53:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:22,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:22,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:22,364 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-04-02 02:53:22,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:53:22,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197423106] [2023-04-02 02:53:22,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197423106] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 02:53:22,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 02:53:22,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 02:53:22,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476137991] [2023-04-02 02:53:22,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 02:53:22,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 02:53:22,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:53:22,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 02:53:22,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-04-02 02:53:22,366 INFO L87 Difference]: Start difference. First operand 603 states and 940 transitions. Second operand has 13 states, 12 states have (on average 7.916666666666667) internal successors, (95), 7 states have internal predecessors, (95), 5 states have call successors, (29), 8 states have call predecessors, (29), 4 states have return successors, (25), 3 states have call predecessors, (25), 5 states have call successors, (25) [2023-04-02 02:53:29,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:53:29,022 INFO L93 Difference]: Finished difference Result 1489 states and 2514 transitions. [2023-04-02 02:53:29,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-04-02 02:53:29,022 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 7.916666666666667) internal successors, (95), 7 states have internal predecessors, (95), 5 states have call successors, (29), 8 states have call predecessors, (29), 4 states have return successors, (25), 3 states have call predecessors, (25), 5 states have call successors, (25) Word has length 154 [2023-04-02 02:53:29,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:53:29,027 INFO L225 Difference]: With dead ends: 1489 [2023-04-02 02:53:29,027 INFO L226 Difference]: Without dead ends: 964 [2023-04-02 02:53:29,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=149, Invalid=553, Unknown=0, NotChecked=0, Total=702 [2023-04-02 02:53:29,029 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 2854 mSDsluCounter, 896 mSDsCounter, 0 mSdLazyCounter, 7262 mSolverCounterSat, 1032 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2913 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 8294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1032 IncrementalHoareTripleChecker+Valid, 7262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-04-02 02:53:29,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2913 Valid, 1042 Invalid, 8294 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1032 Valid, 7262 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-04-02 02:53:29,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2023-04-02 02:53:29,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 613. [2023-04-02 02:53:29,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 456 states have (on average 1.6140350877192982) internal successors, (736), 477 states have internal predecessors, (736), 113 states have call successors, (113), 45 states have call predecessors, (113), 43 states have return successors, (107), 102 states have call predecessors, (107), 105 states have call successors, (107) [2023-04-02 02:53:29,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 956 transitions. [2023-04-02 02:53:29,163 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 956 transitions. Word has length 154 [2023-04-02 02:53:29,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:53:29,164 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 956 transitions. [2023-04-02 02:53:29,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 7.916666666666667) internal successors, (95), 7 states have internal predecessors, (95), 5 states have call successors, (29), 8 states have call predecessors, (29), 4 states have return successors, (25), 3 states have call predecessors, (25), 5 states have call successors, (25) [2023-04-02 02:53:29,164 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 956 transitions. [2023-04-02 02:53:29,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-04-02 02:53:29,166 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:53:29,166 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, 1, 1] [2023-04-02 02:53:29,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 02:53:29,166 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:53:29,166 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:53:29,167 INFO L85 PathProgramCache]: Analyzing trace with hash 245879973, now seen corresponding path program 1 times [2023-04-02 02:53:29,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:53:29,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530323853] [2023-04-02 02:53:29,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:53:29,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:53:29,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:29,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:53:29,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:29,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 02:53:29,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:29,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:53:29,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:29,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:53:29,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:29,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 02:53:29,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:29,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 02:53:29,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:29,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-04-02 02:53:29,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:29,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:53:29,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:29,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:29,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:29,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:53:29,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:29,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-04-02 02:53:29,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:29,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:29,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-02 02:53:29,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:29,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:29,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:29,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:53:29,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:29,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-04-02 02:53:29,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:29,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:29,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:29,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-04-02 02:53:29,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:29,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:29,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:29,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:29,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:29,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:29,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:29,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 02:53:29,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:29,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-04-02 02:53:29,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:29,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 02:53:29,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:29,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:29,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:29,856 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-02 02:53:29,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:53:29,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530323853] [2023-04-02 02:53:29,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530323853] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 02:53:29,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947422317] [2023-04-02 02:53:29,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:53:29,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:53:29,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:53:29,858 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) [2023-04-02 02:53:29,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-04-02 02:53:30,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:30,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 2877 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-02 02:53:30,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:53:30,263 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 02:53:30,263 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 02:53:30,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947422317] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 02:53:30,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 02:53:30,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2023-04-02 02:53:30,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230401171] [2023-04-02 02:53:30,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 02:53:30,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 02:53:30,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:53:30,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 02:53:30,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-04-02 02:53:30,264 INFO L87 Difference]: Start difference. First operand 613 states and 956 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-04-02 02:53:30,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:53:30,454 INFO L93 Difference]: Finished difference Result 1149 states and 1818 transitions. [2023-04-02 02:53:30,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 02:53:30,455 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 156 [2023-04-02 02:53:30,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:53:30,457 INFO L225 Difference]: With dead ends: 1149 [2023-04-02 02:53:30,457 INFO L226 Difference]: Without dead ends: 613 [2023-04-02 02:53:30,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-04-02 02:53:30,459 INFO L413 NwaCegarLoop]: 880 mSDtfsCounter, 61 mSDsluCounter, 1735 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 2615 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 02:53:30,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 2615 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 02:53:30,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2023-04-02 02:53:30,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 613. [2023-04-02 02:53:30,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 456 states have (on average 1.6030701754385965) internal successors, (731), 477 states have internal predecessors, (731), 113 states have call successors, (113), 45 states have call predecessors, (113), 43 states have return successors, (107), 102 states have call predecessors, (107), 105 states have call successors, (107) [2023-04-02 02:53:30,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 951 transitions. [2023-04-02 02:53:30,570 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 951 transitions. Word has length 156 [2023-04-02 02:53:30,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:53:30,570 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 951 transitions. [2023-04-02 02:53:30,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-04-02 02:53:30,570 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 951 transitions. [2023-04-02 02:53:30,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-04-02 02:53:30,572 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:53:30,572 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, 1, 1, 1] [2023-04-02 02:53:30,580 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-04-02 02:53:30,780 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,SelfDestructingSolverStorable13 [2023-04-02 02:53:30,780 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:53:30,780 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:53:30,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1053304754, now seen corresponding path program 1 times [2023-04-02 02:53:30,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:53:30,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56118085] [2023-04-02 02:53:30,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:53:30,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:53:30,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:31,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:53:31,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:31,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 02:53:31,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:31,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:53:31,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:31,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:53:31,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:31,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 02:53:31,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:31,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 02:53:31,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:31,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-04-02 02:53:31,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:31,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:53:31,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:31,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:31,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:31,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:53:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:31,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 02:53:31,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:31,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:31,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:31,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-04-02 02:53:31,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:31,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:31,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:31,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:53:31,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:31,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-04-02 02:53:31,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:31,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:31,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:31,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 02:53:31,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:31,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:31,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:31,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:31,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:31,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:31,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:31,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 02:53:31,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:31,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-04-02 02:53:31,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:31,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 02:53:31,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:31,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:31,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:31,564 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-04-02 02:53:31,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:53:31,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56118085] [2023-04-02 02:53:31,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56118085] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 02:53:31,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 02:53:31,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-02 02:53:31,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060074635] [2023-04-02 02:53:31,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 02:53:31,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 02:53:31,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:53:31,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 02:53:31,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-04-02 02:53:31,566 INFO L87 Difference]: Start difference. First operand 613 states and 951 transitions. Second operand has 16 states, 15 states have (on average 6.533333333333333) internal successors, (98), 8 states have internal predecessors, (98), 5 states have call successors, (29), 8 states have call predecessors, (29), 4 states have return successors, (25), 4 states have call predecessors, (25), 5 states have call successors, (25) [2023-04-02 02:53:40,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:53:40,406 INFO L93 Difference]: Finished difference Result 1509 states and 2559 transitions. [2023-04-02 02:53:40,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-04-02 02:53:40,407 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 6.533333333333333) internal successors, (98), 8 states have internal predecessors, (98), 5 states have call successors, (29), 8 states have call predecessors, (29), 4 states have return successors, (25), 4 states have call predecessors, (25), 5 states have call successors, (25) Word has length 157 [2023-04-02 02:53:40,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:53:40,412 INFO L225 Difference]: With dead ends: 1509 [2023-04-02 02:53:40,412 INFO L226 Difference]: Without dead ends: 975 [2023-04-02 02:53:40,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=219, Invalid=971, Unknown=0, NotChecked=0, Total=1190 [2023-04-02 02:53:40,417 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 1162 mSDsluCounter, 1181 mSDsCounter, 0 mSdLazyCounter, 10857 mSolverCounterSat, 454 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1221 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 11311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 454 IncrementalHoareTripleChecker+Valid, 10857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-04-02 02:53:40,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1221 Valid, 1308 Invalid, 11311 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [454 Valid, 10857 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2023-04-02 02:53:40,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2023-04-02 02:53:40,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 616. [2023-04-02 02:53:40,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 458 states have (on average 1.6004366812227073) internal successors, (733), 479 states have internal predecessors, (733), 113 states have call successors, (113), 45 states have call predecessors, (113), 44 states have return successors, (108), 103 states have call predecessors, (108), 105 states have call successors, (108) [2023-04-02 02:53:40,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 954 transitions. [2023-04-02 02:53:40,570 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 954 transitions. Word has length 157 [2023-04-02 02:53:40,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:53:40,570 INFO L495 AbstractCegarLoop]: Abstraction has 616 states and 954 transitions. [2023-04-02 02:53:40,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 6.533333333333333) internal successors, (98), 8 states have internal predecessors, (98), 5 states have call successors, (29), 8 states have call predecessors, (29), 4 states have return successors, (25), 4 states have call predecessors, (25), 5 states have call successors, (25) [2023-04-02 02:53:40,570 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 954 transitions. [2023-04-02 02:53:40,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-04-02 02:53:40,572 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:53:40,572 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] [2023-04-02 02:53:40,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-02 02:53:40,572 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:53:40,573 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:53:40,573 INFO L85 PathProgramCache]: Analyzing trace with hash -901137547, now seen corresponding path program 1 times [2023-04-02 02:53:40,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:53:40,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051216670] [2023-04-02 02:53:40,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:53:40,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:53:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:40,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:53:40,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:40,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 02:53:40,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:40,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:53:40,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:40,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:53:40,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:40,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 02:53:40,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:40,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 02:53:40,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:41,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-04-02 02:53:41,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:41,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:53:41,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:41,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:41,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:41,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:53:41,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:41,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 02:53:41,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:41,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:41,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:41,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-04-02 02:53:41,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:41,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:41,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:41,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:53:41,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:41,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-04-02 02:53:41,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:41,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:41,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:41,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 02:53:41,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:41,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:41,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:41,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:41,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:41,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:41,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:41,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 02:53:41,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:41,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-04-02 02:53:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:41,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 02:53:41,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:41,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:41,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:41,320 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-04-02 02:53:41,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:53:41,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051216670] [2023-04-02 02:53:41,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051216670] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 02:53:41,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 02:53:41,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-02 02:53:41,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578862135] [2023-04-02 02:53:41,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 02:53:41,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 02:53:41,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:53:41,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 02:53:41,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-04-02 02:53:41,322 INFO L87 Difference]: Start difference. First operand 616 states and 954 transitions. Second operand has 16 states, 15 states have (on average 6.6) internal successors, (99), 9 states have internal predecessors, (99), 5 states have call successors, (29), 8 states have call predecessors, (29), 5 states have return successors, (25), 4 states have call predecessors, (25), 5 states have call successors, (25) [2023-04-02 02:53:49,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:53:49,445 INFO L93 Difference]: Finished difference Result 1512 states and 2549 transitions. [2023-04-02 02:53:49,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-02 02:53:49,449 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 6.6) internal successors, (99), 9 states have internal predecessors, (99), 5 states have call successors, (29), 8 states have call predecessors, (29), 5 states have return successors, (25), 4 states have call predecessors, (25), 5 states have call successors, (25) Word has length 158 [2023-04-02 02:53:49,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:53:49,455 INFO L225 Difference]: With dead ends: 1512 [2023-04-02 02:53:49,455 INFO L226 Difference]: Without dead ends: 975 [2023-04-02 02:53:49,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=191, Invalid=865, Unknown=0, NotChecked=0, Total=1056 [2023-04-02 02:53:49,458 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 2346 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 10524 mSolverCounterSat, 854 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2404 SdHoareTripleChecker+Valid, 1415 SdHoareTripleChecker+Invalid, 11378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 854 IncrementalHoareTripleChecker+Valid, 10524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-04-02 02:53:49,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2404 Valid, 1415 Invalid, 11378 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [854 Valid, 10524 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-04-02 02:53:49,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2023-04-02 02:53:49,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 623. [2023-04-02 02:53:49,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 463 states have (on average 1.6025917926565876) internal successors, (742), 486 states have internal predecessors, (742), 114 states have call successors, (114), 45 states have call predecessors, (114), 45 states have return successors, (110), 103 states have call predecessors, (110), 106 states have call successors, (110) [2023-04-02 02:53:49,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 966 transitions. [2023-04-02 02:53:49,596 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 966 transitions. Word has length 158 [2023-04-02 02:53:49,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:53:49,596 INFO L495 AbstractCegarLoop]: Abstraction has 623 states and 966 transitions. [2023-04-02 02:53:49,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 6.6) internal successors, (99), 9 states have internal predecessors, (99), 5 states have call successors, (29), 8 states have call predecessors, (29), 5 states have return successors, (25), 4 states have call predecessors, (25), 5 states have call successors, (25) [2023-04-02 02:53:49,597 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 966 transitions. [2023-04-02 02:53:49,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-04-02 02:53:49,598 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:53:49,599 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, 1, 1, 1, 1] [2023-04-02 02:53:49,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-02 02:53:49,599 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:53:49,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:53:49,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1817579652, now seen corresponding path program 1 times [2023-04-02 02:53:49,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:53:49,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219381103] [2023-04-02 02:53:49,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:53:49,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:53:49,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:49,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:53:49,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:49,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 02:53:49,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:49,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:53:49,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:49,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:53:49,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:49,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 02:53:49,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:49,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 02:53:49,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:50,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-04-02 02:53:50,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:50,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:53:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:50,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:50,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:50,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:53:50,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:50,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 02:53:50,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:50,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:50,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:50,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-04-02 02:53:50,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:50,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:50,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:50,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:53:50,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:50,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-04-02 02:53:50,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:50,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:50,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:50,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 02:53:50,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:50,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:50,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:50,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:50,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:50,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:50,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:50,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 02:53:50,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:50,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-04-02 02:53:50,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:50,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 02:53:50,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:50,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:50,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:50,293 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-04-02 02:53:50,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:53:50,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219381103] [2023-04-02 02:53:50,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219381103] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 02:53:50,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 02:53:50,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-02 02:53:50,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094522240] [2023-04-02 02:53:50,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 02:53:50,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 02:53:50,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:53:50,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 02:53:50,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-04-02 02:53:50,295 INFO L87 Difference]: Start difference. First operand 623 states and 966 transitions. Second operand has 16 states, 15 states have (on average 6.6) internal successors, (99), 8 states have internal predecessors, (99), 5 states have call successors, (29), 8 states have call predecessors, (29), 4 states have return successors, (25), 4 states have call predecessors, (25), 5 states have call successors, (25) [2023-04-02 02:53:59,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:53:59,120 INFO L93 Difference]: Finished difference Result 1527 states and 2585 transitions. [2023-04-02 02:53:59,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-04-02 02:53:59,121 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 6.6) internal successors, (99), 8 states have internal predecessors, (99), 5 states have call successors, (29), 8 states have call predecessors, (29), 4 states have return successors, (25), 4 states have call predecessors, (25), 5 states have call successors, (25) Word has length 158 [2023-04-02 02:53:59,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:53:59,125 INFO L225 Difference]: With dead ends: 1527 [2023-04-02 02:53:59,125 INFO L226 Difference]: Without dead ends: 984 [2023-04-02 02:53:59,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=219, Invalid=971, Unknown=0, NotChecked=0, Total=1190 [2023-04-02 02:53:59,127 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 1148 mSDsluCounter, 1374 mSDsCounter, 0 mSdLazyCounter, 10978 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 11424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 10978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-04-02 02:53:59,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1207 Valid, 1523 Invalid, 11424 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [446 Valid, 10978 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2023-04-02 02:53:59,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2023-04-02 02:53:59,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 626. [2023-04-02 02:53:59,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 465 states have (on average 1.6) internal successors, (744), 488 states have internal predecessors, (744), 114 states have call successors, (114), 45 states have call predecessors, (114), 46 states have return successors, (111), 104 states have call predecessors, (111), 106 states have call successors, (111) [2023-04-02 02:53:59,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 969 transitions. [2023-04-02 02:53:59,261 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 969 transitions. Word has length 158 [2023-04-02 02:53:59,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:53:59,261 INFO L495 AbstractCegarLoop]: Abstraction has 626 states and 969 transitions. [2023-04-02 02:53:59,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 6.6) internal successors, (99), 8 states have internal predecessors, (99), 5 states have call successors, (29), 8 states have call predecessors, (29), 4 states have return successors, (25), 4 states have call predecessors, (25), 5 states have call successors, (25) [2023-04-02 02:53:59,261 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 969 transitions. [2023-04-02 02:53:59,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-04-02 02:53:59,263 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:53:59,263 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] [2023-04-02 02:53:59,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-02 02:53:59,264 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:53:59,264 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:53:59,264 INFO L85 PathProgramCache]: Analyzing trace with hash -2098034177, now seen corresponding path program 1 times [2023-04-02 02:53:59,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:53:59,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063991762] [2023-04-02 02:53:59,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:53:59,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:53:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:59,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:53:59,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:59,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 02:53:59,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:59,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:53:59,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:59,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:53:59,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:59,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 02:53:59,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:59,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 02:53:59,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:59,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-04-02 02:53:59,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:59,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:53:59,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:59,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:59,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:59,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:53:59,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:59,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 02:53:59,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:59,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:59,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:59,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-04-02 02:53:59,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:59,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:59,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:59,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:53:59,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:59,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-04-02 02:53:59,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:59,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:59,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:59,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-04-02 02:53:59,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:59,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:59,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:59,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:59,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:59,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:53:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:53:59,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 02:53:59,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:00,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-04-02 02:54:00,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:00,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 02:54:00,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:00,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:00,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:00,012 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-04-02 02:54:00,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:54:00,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063991762] [2023-04-02 02:54:00,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063991762] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 02:54:00,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 02:54:00,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-02 02:54:00,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832556687] [2023-04-02 02:54:00,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 02:54:00,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 02:54:00,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:54:00,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 02:54:00,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-04-02 02:54:00,014 INFO L87 Difference]: Start difference. First operand 626 states and 969 transitions. Second operand has 16 states, 15 states have (on average 6.666666666666667) internal successors, (100), 9 states have internal predecessors, (100), 5 states have call successors, (29), 8 states have call predecessors, (29), 4 states have return successors, (25), 4 states have call predecessors, (25), 5 states have call successors, (25) [2023-04-02 02:54:08,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:54:08,252 INFO L93 Difference]: Finished difference Result 1533 states and 2592 transitions. [2023-04-02 02:54:08,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-04-02 02:54:08,252 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 6.666666666666667) internal successors, (100), 9 states have internal predecessors, (100), 5 states have call successors, (29), 8 states have call predecessors, (29), 4 states have return successors, (25), 4 states have call predecessors, (25), 5 states have call successors, (25) Word has length 159 [2023-04-02 02:54:08,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:54:08,256 INFO L225 Difference]: With dead ends: 1533 [2023-04-02 02:54:08,256 INFO L226 Difference]: Without dead ends: 987 [2023-04-02 02:54:08,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=219, Invalid=971, Unknown=0, NotChecked=0, Total=1190 [2023-04-02 02:54:08,258 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 1661 mSDsluCounter, 1263 mSDsCounter, 0 mSdLazyCounter, 10620 mSolverCounterSat, 647 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1720 SdHoareTripleChecker+Valid, 1393 SdHoareTripleChecker+Invalid, 11267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 647 IncrementalHoareTripleChecker+Valid, 10620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-04-02 02:54:08,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1720 Valid, 1393 Invalid, 11267 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [647 Valid, 10620 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-04-02 02:54:08,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2023-04-02 02:54:08,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 627. [2023-04-02 02:54:08,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 466 states have (on average 1.5987124463519313) internal successors, (745), 489 states have internal predecessors, (745), 114 states have call successors, (114), 45 states have call predecessors, (114), 46 states have return successors, (111), 104 states have call predecessors, (111), 106 states have call successors, (111) [2023-04-02 02:54:08,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 970 transitions. [2023-04-02 02:54:08,397 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 970 transitions. Word has length 159 [2023-04-02 02:54:08,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:54:08,398 INFO L495 AbstractCegarLoop]: Abstraction has 627 states and 970 transitions. [2023-04-02 02:54:08,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 6.666666666666667) internal successors, (100), 9 states have internal predecessors, (100), 5 states have call successors, (29), 8 states have call predecessors, (29), 4 states have return successors, (25), 4 states have call predecessors, (25), 5 states have call successors, (25) [2023-04-02 02:54:08,398 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 970 transitions. [2023-04-02 02:54:08,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-04-02 02:54:08,400 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:54:08,400 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, 1, 1, 1, 1, 1] [2023-04-02 02:54:08,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-02 02:54:08,400 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:54:08,400 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:54:08,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1797693613, now seen corresponding path program 1 times [2023-04-02 02:54:08,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:54:08,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465735594] [2023-04-02 02:54:08,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:54:08,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:54:08,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:08,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:54:08,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:08,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 02:54:08,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:08,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:54:08,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:08,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:54:08,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:08,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 02:54:08,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:08,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 02:54:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:08,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-04-02 02:54:08,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:09,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:54:09,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:09,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:09,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:54:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:09,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 02:54:09,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:09,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:09,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:09,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-04-02 02:54:09,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:09,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:09,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:54:09,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:09,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-04-02 02:54:09,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:09,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:09,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:09,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-04-02 02:54:09,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:09,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:09,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:09,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:09,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:09,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:09,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 02:54:09,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:09,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-04-02 02:54:09,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:09,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 02:54:09,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:09,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:09,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:09,184 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-02 02:54:09,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:54:09,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465735594] [2023-04-02 02:54:09,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465735594] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 02:54:09,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 02:54:09,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-04-02 02:54:09,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746772352] [2023-04-02 02:54:09,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 02:54:09,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-02 02:54:09,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:54:09,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-02 02:54:09,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2023-04-02 02:54:09,186 INFO L87 Difference]: Start difference. First operand 627 states and 970 transitions. Second operand has 19 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 10 states have internal predecessors, (101), 6 states have call successors, (29), 8 states have call predecessors, (29), 5 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) [2023-04-02 02:54:19,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:54:19,309 INFO L93 Difference]: Finished difference Result 1537 states and 2607 transitions. [2023-04-02 02:54:19,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-04-02 02:54:19,310 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 10 states have internal predecessors, (101), 6 states have call successors, (29), 8 states have call predecessors, (29), 5 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) Word has length 159 [2023-04-02 02:54:19,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:54:19,314 INFO L225 Difference]: With dead ends: 1537 [2023-04-02 02:54:19,314 INFO L226 Difference]: Without dead ends: 990 [2023-04-02 02:54:19,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=285, Invalid=1607, Unknown=0, NotChecked=0, Total=1892 [2023-04-02 02:54:19,316 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 1212 mSDsluCounter, 1581 mSDsCounter, 0 mSdLazyCounter, 14253 mSolverCounterSat, 469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1271 SdHoareTripleChecker+Valid, 1713 SdHoareTripleChecker+Invalid, 14722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 469 IncrementalHoareTripleChecker+Valid, 14253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2023-04-02 02:54:19,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1271 Valid, 1713 Invalid, 14722 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [469 Valid, 14253 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2023-04-02 02:54:19,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2023-04-02 02:54:19,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 630. [2023-04-02 02:54:19,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 468 states have (on average 1.5961538461538463) internal successors, (747), 491 states have internal predecessors, (747), 114 states have call successors, (114), 45 states have call predecessors, (114), 47 states have return successors, (112), 105 states have call predecessors, (112), 106 states have call successors, (112) [2023-04-02 02:54:19,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 973 transitions. [2023-04-02 02:54:19,459 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 973 transitions. Word has length 159 [2023-04-02 02:54:19,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:54:19,460 INFO L495 AbstractCegarLoop]: Abstraction has 630 states and 973 transitions. [2023-04-02 02:54:19,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 10 states have internal predecessors, (101), 6 states have call successors, (29), 8 states have call predecessors, (29), 5 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) [2023-04-02 02:54:19,460 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 973 transitions. [2023-04-02 02:54:19,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-04-02 02:54:19,462 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:54:19,462 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] [2023-04-02 02:54:19,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-02 02:54:19,462 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:54:19,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:54:19,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1309355455, now seen corresponding path program 1 times [2023-04-02 02:54:19,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:54:19,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790727631] [2023-04-02 02:54:19,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:54:19,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:54:19,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:19,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:54:19,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:19,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 02:54:19,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:19,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:54:19,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:19,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:54:19,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:19,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 02:54:19,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:19,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 02:54:19,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:19,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-04-02 02:54:19,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:20,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:54:20,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:20,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:20,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:20,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:54:20,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:20,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 02:54:20,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:20,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:20,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:20,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-04-02 02:54:20,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:20,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:20,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:20,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:54:20,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:20,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-04-02 02:54:20,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:20,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:20,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-04-02 02:54:20,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:20,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:20,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:20,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:20,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:20,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:20,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:20,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 02:54:20,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:20,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-04-02 02:54:20,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:20,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 02:54:20,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:20,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:20,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:20,219 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-04-02 02:54:20,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:54:20,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790727631] [2023-04-02 02:54:20,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790727631] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 02:54:20,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 02:54:20,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 02:54:20,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071221690] [2023-04-02 02:54:20,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 02:54:20,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 02:54:20,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:54:20,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 02:54:20,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-04-02 02:54:20,220 INFO L87 Difference]: Start difference. First operand 630 states and 973 transitions. Second operand has 14 states, 14 states have (on average 6.857142857142857) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (27), 8 states have call predecessors, (27), 4 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2023-04-02 02:54:27,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:54:27,664 INFO L93 Difference]: Finished difference Result 1498 states and 2596 transitions. [2023-04-02 02:54:27,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-02 02:54:27,664 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.857142857142857) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (27), 8 states have call predecessors, (27), 4 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) Word has length 160 [2023-04-02 02:54:27,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:54:27,668 INFO L225 Difference]: With dead ends: 1498 [2023-04-02 02:54:27,668 INFO L226 Difference]: Without dead ends: 1023 [2023-04-02 02:54:27,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=171, Invalid=531, Unknown=0, NotChecked=0, Total=702 [2023-04-02 02:54:27,670 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 2880 mSDsluCounter, 976 mSDsCounter, 0 mSdLazyCounter, 8392 mSolverCounterSat, 1122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2940 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 9514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1122 IncrementalHoareTripleChecker+Valid, 8392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-04-02 02:54:27,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2940 Valid, 1115 Invalid, 9514 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1122 Valid, 8392 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-04-02 02:54:27,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2023-04-02 02:54:27,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 634. [2023-04-02 02:54:27,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 471 states have (on average 1.5923566878980893) internal successors, (750), 494 states have internal predecessors, (750), 114 states have call successors, (114), 45 states have call predecessors, (114), 48 states have return successors, (113), 106 states have call predecessors, (113), 106 states have call successors, (113) [2023-04-02 02:54:27,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 977 transitions. [2023-04-02 02:54:27,827 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 977 transitions. Word has length 160 [2023-04-02 02:54:27,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:54:27,827 INFO L495 AbstractCegarLoop]: Abstraction has 634 states and 977 transitions. [2023-04-02 02:54:27,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.857142857142857) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (27), 8 states have call predecessors, (27), 4 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2023-04-02 02:54:27,827 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 977 transitions. [2023-04-02 02:54:27,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-04-02 02:54:27,829 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:54:27,829 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] [2023-04-02 02:54:27,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-04-02 02:54:27,829 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:54:27,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:54:27,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1040794827, now seen corresponding path program 1 times [2023-04-02 02:54:27,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:54:27,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78363621] [2023-04-02 02:54:27,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:54:27,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:54:27,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:28,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:54:28,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:28,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 02:54:28,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:28,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:54:28,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:28,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:54:28,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:28,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 02:54:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:28,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 02:54:28,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:28,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-04-02 02:54:28,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:28,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:54:28,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:28,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:28,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:28,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:54:28,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:28,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 02:54:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:28,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:28,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:28,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-04-02 02:54:28,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:28,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:28,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:28,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:54:28,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:28,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-04-02 02:54:28,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:28,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:28,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:28,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-04-02 02:54:28,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:28,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:28,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:28,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:28,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:28,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:28,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:28,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 02:54:28,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:28,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 02:54:28,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:28,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 02:54:28,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:28,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-04-02 02:54:28,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:28,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:28,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:28,833 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-02 02:54:28,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:54:28,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78363621] [2023-04-02 02:54:28,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78363621] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 02:54:28,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232538718] [2023-04-02 02:54:28,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:54:28,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:54:28,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:54:28,834 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) [2023-04-02 02:54:28,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-04-02 02:54:29,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:29,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 2903 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-02 02:54:29,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:54:29,283 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 02:54:29,283 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 02:54:29,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232538718] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 02:54:29,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 02:54:29,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [18] total 23 [2023-04-02 02:54:29,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948964616] [2023-04-02 02:54:29,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 02:54:29,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 02:54:29,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:54:29,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 02:54:29,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2023-04-02 02:54:29,284 INFO L87 Difference]: Start difference. First operand 634 states and 977 transitions. Second operand has 7 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 4 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2023-04-02 02:54:29,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:54:29,484 INFO L93 Difference]: Finished difference Result 1194 states and 1865 transitions. [2023-04-02 02:54:29,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 02:54:29,484 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 4 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 167 [2023-04-02 02:54:29,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:54:29,487 INFO L225 Difference]: With dead ends: 1194 [2023-04-02 02:54:29,487 INFO L226 Difference]: Without dead ends: 642 [2023-04-02 02:54:29,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 213 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2023-04-02 02:54:29,489 INFO L413 NwaCegarLoop]: 908 mSDtfsCounter, 51 mSDsluCounter, 4462 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 5370 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 02:54:29,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 5370 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 02:54:29,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2023-04-02 02:54:29,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 640. [2023-04-02 02:54:29,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 474 states have (on average 1.5886075949367089) internal successors, (753), 498 states have internal predecessors, (753), 115 states have call successors, (115), 45 states have call predecessors, (115), 50 states have return successors, (116), 108 states have call predecessors, (116), 107 states have call successors, (116) [2023-04-02 02:54:29,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 984 transitions. [2023-04-02 02:54:29,626 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 984 transitions. Word has length 167 [2023-04-02 02:54:29,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:54:29,626 INFO L495 AbstractCegarLoop]: Abstraction has 640 states and 984 transitions. [2023-04-02 02:54:29,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 4 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2023-04-02 02:54:29,626 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 984 transitions. [2023-04-02 02:54:29,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-04-02 02:54:29,628 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:54:29,628 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] [2023-04-02 02:54:29,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-04-02 02:54:29,829 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,SelfDestructingSolverStorable20 [2023-04-02 02:54:29,830 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:54:29,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:54:29,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1313231114, now seen corresponding path program 1 times [2023-04-02 02:54:29,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:54:29,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898453084] [2023-04-02 02:54:29,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:54:29,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:54:29,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:30,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:54:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:30,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 02:54:30,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:30,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:54:30,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:30,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:54:30,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:30,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 02:54:30,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:30,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 02:54:30,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:30,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-04-02 02:54:30,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:30,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:54:30,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:30,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:30,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:30,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:54:30,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:30,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 02:54:30,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:30,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:30,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:30,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-04-02 02:54:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:30,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:30,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:54:30,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:30,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-04-02 02:54:30,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:30,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:30,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-04-02 02:54:30,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:30,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:30,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:30,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:30,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:30,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:30,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:30,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 02:54:30,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:30,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 02:54:30,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:30,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 02:54:30,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:30,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-04-02 02:54:30,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:30,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:30,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:30,703 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-02 02:54:30,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:54:30,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898453084] [2023-04-02 02:54:30,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898453084] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 02:54:30,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602190615] [2023-04-02 02:54:30,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:54:30,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:54:30,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:54:30,705 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) [2023-04-02 02:54:30,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-04-02 02:54:31,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:31,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 2902 conjuncts, 16 conjunts are in the unsatisfiable core [2023-04-02 02:54:31,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:54:31,327 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-04-02 02:54:31,328 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 02:54:32,141 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-04-02 02:54:32,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602190615] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 02:54:32,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 02:54:32,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 9] total 26 [2023-04-02 02:54:32,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314257318] [2023-04-02 02:54:32,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 02:54:32,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-04-02 02:54:32,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:54:32,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-04-02 02:54:32,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2023-04-02 02:54:32,143 INFO L87 Difference]: Start difference. First operand 640 states and 984 transitions. Second operand has 26 states, 25 states have (on average 8.24) internal successors, (206), 16 states have internal predecessors, (206), 11 states have call successors, (62), 11 states have call predecessors, (62), 13 states have return successors, (54), 14 states have call predecessors, (54), 11 states have call successors, (54) [2023-04-02 02:54:54,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:54:54,444 INFO L93 Difference]: Finished difference Result 2652 states and 4797 transitions. [2023-04-02 02:54:54,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-04-02 02:54:54,447 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 8.24) internal successors, (206), 16 states have internal predecessors, (206), 11 states have call successors, (62), 11 states have call predecessors, (62), 13 states have return successors, (54), 14 states have call predecessors, (54), 11 states have call successors, (54) Word has length 167 [2023-04-02 02:54:54,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:54:54,460 INFO L225 Difference]: With dead ends: 2652 [2023-04-02 02:54:54,460 INFO L226 Difference]: Without dead ends: 2153 [2023-04-02 02:54:54,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 385 SyntacticMatches, 4 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1882 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1211, Invalid=5109, Unknown=0, NotChecked=0, Total=6320 [2023-04-02 02:54:54,465 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 8805 mSDsluCounter, 2380 mSDsCounter, 0 mSdLazyCounter, 23774 mSolverCounterSat, 4048 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8809 SdHoareTripleChecker+Valid, 2691 SdHoareTripleChecker+Invalid, 27822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4048 IncrementalHoareTripleChecker+Valid, 23774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time [2023-04-02 02:54:54,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8809 Valid, 2691 Invalid, 27822 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4048 Valid, 23774 Invalid, 0 Unknown, 0 Unchecked, 16.5s Time] [2023-04-02 02:54:54,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2023-04-02 02:54:54,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 1250. [2023-04-02 02:54:54,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 909 states have (on average 1.592959295929593) internal successors, (1448), 955 states have internal predecessors, (1448), 242 states have call successors, (242), 76 states have call predecessors, (242), 98 states have return successors, (288), 247 states have call predecessors, (288), 234 states have call successors, (288) [2023-04-02 02:54:54,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1978 transitions. [2023-04-02 02:54:54,853 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1978 transitions. Word has length 167 [2023-04-02 02:54:54,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:54:54,853 INFO L495 AbstractCegarLoop]: Abstraction has 1250 states and 1978 transitions. [2023-04-02 02:54:54,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 8.24) internal successors, (206), 16 states have internal predecessors, (206), 11 states have call successors, (62), 11 states have call predecessors, (62), 13 states have return successors, (54), 14 states have call predecessors, (54), 11 states have call successors, (54) [2023-04-02 02:54:54,853 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1978 transitions. [2023-04-02 02:54:54,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-04-02 02:54:54,856 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:54:54,856 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:54:54,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-04-02 02:54:55,057 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,SelfDestructingSolverStorable21 [2023-04-02 02:54:55,057 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:54:55,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:54:55,058 INFO L85 PathProgramCache]: Analyzing trace with hash 98695243, now seen corresponding path program 1 times [2023-04-02 02:54:55,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:54:55,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538707241] [2023-04-02 02:54:55,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:54:55,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:54:55,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:55,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:54:55,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:55,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 02:54:55,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:55,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:54:55,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:55,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:54:55,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:55,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 02:54:55,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:55,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 02:54:55,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:55,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-04-02 02:54:55,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:55,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:54:55,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:55,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:55,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:55,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:54:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:55,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 02:54:55,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:55,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:55,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:55,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-04-02 02:54:55,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:55,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:55,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:55,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:54:55,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:55,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-04-02 02:54:55,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:55,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:55,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:55,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 02:54:55,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:55,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:55,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:55,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:55,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:55,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:55,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:55,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 02:54:55,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:55,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 02:54:55,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:55,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-02 02:54:55,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:55,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-04-02 02:54:55,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:55,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:55,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:55,771 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-02 02:54:55,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:54:55,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538707241] [2023-04-02 02:54:55,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538707241] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 02:54:55,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660480869] [2023-04-02 02:54:55,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:54:55,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:54:55,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:54:55,774 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) [2023-04-02 02:54:55,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-04-02 02:54:56,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:56,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 2906 conjuncts, 2 conjunts are in the unsatisfiable core [2023-04-02 02:54:56,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:54:56,227 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-04-02 02:54:56,227 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 02:54:56,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660480869] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 02:54:56,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 02:54:56,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [16] total 17 [2023-04-02 02:54:56,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430494344] [2023-04-02 02:54:56,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 02:54:56,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 02:54:56,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:54:56,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 02:54:56,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2023-04-02 02:54:56,230 INFO L87 Difference]: Start difference. First operand 1250 states and 1978 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-04-02 02:54:56,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:54:56,906 INFO L93 Difference]: Finished difference Result 3208 states and 5251 transitions. [2023-04-02 02:54:56,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 02:54:56,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 172 [2023-04-02 02:54:56,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:54:56,915 INFO L225 Difference]: With dead ends: 3208 [2023-04-02 02:54:56,915 INFO L226 Difference]: Without dead ends: 2187 [2023-04-02 02:54:56,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2023-04-02 02:54:56,919 INFO L413 NwaCegarLoop]: 1020 mSDtfsCounter, 843 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 1721 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 02:54:56,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 1721 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 02:54:56,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2187 states. [2023-04-02 02:54:57,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2187 to 2168. [2023-04-02 02:54:57,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2168 states, 1576 states have (on average 1.593274111675127) internal successors, (2511), 1656 states have internal predecessors, (2511), 434 states have call successors, (434), 126 states have call predecessors, (434), 157 states have return successors, (533), 443 states have call predecessors, (533), 426 states have call successors, (533) [2023-04-02 02:54:57,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2168 states to 2168 states and 3478 transitions. [2023-04-02 02:54:57,546 INFO L78 Accepts]: Start accepts. Automaton has 2168 states and 3478 transitions. Word has length 172 [2023-04-02 02:54:57,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:54:57,546 INFO L495 AbstractCegarLoop]: Abstraction has 2168 states and 3478 transitions. [2023-04-02 02:54:57,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-04-02 02:54:57,547 INFO L276 IsEmpty]: Start isEmpty. Operand 2168 states and 3478 transitions. [2023-04-02 02:54:57,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-04-02 02:54:57,549 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:54:57,550 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:54:57,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-04-02 02:54:57,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:54:57,750 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:54:57,751 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:54:57,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1038056232, now seen corresponding path program 1 times [2023-04-02 02:54:57,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:54:57,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049955779] [2023-04-02 02:54:57,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:54:57,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:54:57,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:57,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:54:57,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:57,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 02:54:57,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:57,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:54:57,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:57,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:54:57,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:57,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 02:54:57,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:57,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 02:54:57,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:58,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-04-02 02:54:58,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:58,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:54:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:58,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:58,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:58,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:54:58,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:58,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 02:54:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:58,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:58,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:58,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-04-02 02:54:58,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:58,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:58,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:58,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:54:58,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:58,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-04-02 02:54:58,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:58,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:58,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:58,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 02:54:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:58,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:58,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:58,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:58,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:58,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:58,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:58,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 02:54:58,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:58,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 02:54:58,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:58,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 02:54:58,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:58,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-04-02 02:54:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:58,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-04-02 02:54:58,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:58,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:54:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:58,469 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-02 02:54:58,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:54:58,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049955779] [2023-04-02 02:54:58,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049955779] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 02:54:58,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730496745] [2023-04-02 02:54:58,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:54:58,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:54:58,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:54:58,470 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) [2023-04-02 02:54:58,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-04-02 02:54:58,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:54:58,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 2925 conjuncts, 2 conjunts are in the unsatisfiable core [2023-04-02 02:54:58,880 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:54:58,892 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-04-02 02:54:58,893 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 02:54:58,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730496745] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 02:54:58,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 02:54:58,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [16] total 17 [2023-04-02 02:54:58,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063904574] [2023-04-02 02:54:58,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 02:54:58,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 02:54:58,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:54:58,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 02:54:58,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2023-04-02 02:54:58,894 INFO L87 Difference]: Start difference. First operand 2168 states and 3478 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-04-02 02:55:00,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:55:00,160 INFO L93 Difference]: Finished difference Result 5886 states and 9669 transitions. [2023-04-02 02:55:00,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 02:55:00,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 177 [2023-04-02 02:55:00,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:55:00,175 INFO L225 Difference]: With dead ends: 5886 [2023-04-02 02:55:00,175 INFO L226 Difference]: Without dead ends: 3947 [2023-04-02 02:55:00,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2023-04-02 02:55:00,182 INFO L413 NwaCegarLoop]: 862 mSDtfsCounter, 903 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 1529 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 02:55:00,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [903 Valid, 1529 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 02:55:00,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3947 states. [2023-04-02 02:55:01,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3947 to 3928. [2023-04-02 02:55:01,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3928 states, 2844 states have (on average 1.5981012658227849) internal successors, (4545), 2990 states have internal predecessors, (4545), 812 states have call successors, (812), 226 states have call predecessors, (812), 271 states have return successors, (1033), 827 states have call predecessors, (1033), 804 states have call successors, (1033) [2023-04-02 02:55:01,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3928 states to 3928 states and 6390 transitions. [2023-04-02 02:55:01,364 INFO L78 Accepts]: Start accepts. Automaton has 3928 states and 6390 transitions. Word has length 177 [2023-04-02 02:55:01,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:55:01,366 INFO L495 AbstractCegarLoop]: Abstraction has 3928 states and 6390 transitions. [2023-04-02 02:55:01,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2023-04-02 02:55:01,366 INFO L276 IsEmpty]: Start isEmpty. Operand 3928 states and 6390 transitions. [2023-04-02 02:55:01,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-04-02 02:55:01,369 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:55:01,369 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:55:01,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-04-02 02:55:01,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:55:01,577 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:55:01,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:55:01,577 INFO L85 PathProgramCache]: Analyzing trace with hash -378876105, now seen corresponding path program 1 times [2023-04-02 02:55:01,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:55:01,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427897831] [2023-04-02 02:55:01,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:55:01,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:55:01,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:01,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:55:01,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:01,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 02:55:01,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:01,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:55:01,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:01,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:55:01,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:01,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 02:55:01,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:01,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 02:55:01,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:01,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-04-02 02:55:01,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:02,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:55:02,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:02,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:55:02,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:02,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:55:02,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:02,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 02:55:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:02,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:55:02,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:02,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-04-02 02:55:02,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:02,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:55:02,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:02,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:55:02,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:02,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-04-02 02:55:02,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:02,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:55:02,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:02,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 02:55:02,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:02,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:55:02,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:02,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:55:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:02,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:55:02,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:02,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 02:55:02,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:02,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 02:55:02,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:02,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 02:55:02,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:02,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-04-02 02:55:02,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:02,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-04-02 02:55:02,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:02,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:55:02,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:02,242 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-02 02:55:02,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:55:02,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427897831] [2023-04-02 02:55:02,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427897831] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 02:55:02,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682396414] [2023-04-02 02:55:02,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:55:02,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:55:02,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:55:02,244 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) [2023-04-02 02:55:02,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-04-02 02:55:02,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:02,613 INFO L262 TraceCheckSpWp]: Trace formula consists of 2929 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-02 02:55:02,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:55:02,683 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-02 02:55:02,683 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 02:55:02,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682396414] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 02:55:02,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 02:55:02,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2023-04-02 02:55:02,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883239533] [2023-04-02 02:55:02,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 02:55:02,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 02:55:02,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:55:02,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 02:55:02,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2023-04-02 02:55:02,685 INFO L87 Difference]: Start difference. First operand 3928 states and 6390 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 4 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (27), 3 states have call predecessors, (27), 4 states have call successors, (27) [2023-04-02 02:55:03,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:55:03,927 INFO L93 Difference]: Finished difference Result 7722 states and 12614 transitions. [2023-04-02 02:55:03,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 02:55:03,928 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 4 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (27), 3 states have call predecessors, (27), 4 states have call successors, (27) Word has length 180 [2023-04-02 02:55:03,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:55:03,942 INFO L225 Difference]: With dead ends: 7722 [2023-04-02 02:55:03,942 INFO L226 Difference]: Without dead ends: 3934 [2023-04-02 02:55:03,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2023-04-02 02:55:03,954 INFO L413 NwaCegarLoop]: 909 mSDtfsCounter, 12 mSDsluCounter, 2695 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 3604 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 02:55:03,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 3604 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 02:55:03,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3934 states. [2023-04-02 02:55:05,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3934 to 3930. [2023-04-02 02:55:05,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3930 states, 2845 states have (on average 1.5964850615114234) internal successors, (4542), 2992 states have internal predecessors, (4542), 812 states have call successors, (812), 226 states have call predecessors, (812), 272 states have return successors, (1036), 827 states have call predecessors, (1036), 804 states have call successors, (1036) [2023-04-02 02:55:05,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3930 states to 3930 states and 6390 transitions. [2023-04-02 02:55:05,132 INFO L78 Accepts]: Start accepts. Automaton has 3930 states and 6390 transitions. Word has length 180 [2023-04-02 02:55:05,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:55:05,132 INFO L495 AbstractCegarLoop]: Abstraction has 3930 states and 6390 transitions. [2023-04-02 02:55:05,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 4 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (27), 3 states have call predecessors, (27), 4 states have call successors, (27) [2023-04-02 02:55:05,132 INFO L276 IsEmpty]: Start isEmpty. Operand 3930 states and 6390 transitions. [2023-04-02 02:55:05,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-04-02 02:55:05,136 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:55:05,136 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:55:05,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-04-02 02:55:05,343 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,SelfDestructingSolverStorable24 [2023-04-02 02:55:05,344 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:55:05,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:55:05,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1306562948, now seen corresponding path program 1 times [2023-04-02 02:55:05,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:55:05,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569835449] [2023-04-02 02:55:05,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:55:05,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:55:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:05,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:55:05,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:05,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 02:55:05,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:05,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:55:05,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:05,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:55:05,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:05,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 02:55:05,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:05,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 02:55:05,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:05,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-04-02 02:55:05,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:05,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:55:05,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:05,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:55:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:05,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:55:05,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:05,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:55:05,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:05,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:55:05,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:05,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-04-02 02:55:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:05,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:55:05,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:05,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:55:05,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:05,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-04-02 02:55:05,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:05,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:55:05,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:05,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-04-02 02:55:05,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:05,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:55:05,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:05,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:55:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:05,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:55:05,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:05,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 02:55:05,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:05,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 02:55:05,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:05,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 02:55:05,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:05,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-04-02 02:55:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:05,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-04-02 02:55:05,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:05,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:55:05,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:05,988 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-02 02:55:05,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:55:05,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569835449] [2023-04-02 02:55:05,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569835449] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 02:55:05,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435503042] [2023-04-02 02:55:05,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:55:05,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:55:05,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:55:05,990 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) [2023-04-02 02:55:06,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-04-02 02:55:06,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:06,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 2931 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-02 02:55:06,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:55:06,445 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 02:55:06,446 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 02:55:06,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435503042] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 02:55:06,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 02:55:06,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2023-04-02 02:55:06,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280158905] [2023-04-02 02:55:06,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 02:55:06,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 02:55:06,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:55:06,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 02:55:06,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2023-04-02 02:55:06,447 INFO L87 Difference]: Start difference. First operand 3930 states and 6390 transitions. Second operand has 7 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 4 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2023-04-02 02:55:07,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:55:07,682 INFO L93 Difference]: Finished difference Result 7777 states and 12677 transitions. [2023-04-02 02:55:07,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 02:55:07,683 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 4 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 182 [2023-04-02 02:55:07,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:55:07,695 INFO L225 Difference]: With dead ends: 7777 [2023-04-02 02:55:07,695 INFO L226 Difference]: Without dead ends: 3939 [2023-04-02 02:55:07,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2023-04-02 02:55:07,702 INFO L413 NwaCegarLoop]: 910 mSDtfsCounter, 74 mSDsluCounter, 4443 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 5353 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 02:55:07,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 5353 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 02:55:07,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3939 states. [2023-04-02 02:55:08,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3939 to 3935. [2023-04-02 02:55:08,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3935 states, 2847 states have (on average 1.5960660344221989) internal successors, (4544), 2995 states have internal predecessors, (4544), 813 states have call successors, (813), 226 states have call predecessors, (813), 274 states have return successors, (1041), 829 states have call predecessors, (1041), 805 states have call successors, (1041) [2023-04-02 02:55:08,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3935 states to 3935 states and 6398 transitions. [2023-04-02 02:55:08,892 INFO L78 Accepts]: Start accepts. Automaton has 3935 states and 6398 transitions. Word has length 182 [2023-04-02 02:55:08,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:55:08,892 INFO L495 AbstractCegarLoop]: Abstraction has 3935 states and 6398 transitions. [2023-04-02 02:55:08,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 4 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2023-04-02 02:55:08,892 INFO L276 IsEmpty]: Start isEmpty. Operand 3935 states and 6398 transitions. [2023-04-02 02:55:08,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-04-02 02:55:08,895 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:55:08,896 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 02:55:08,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-04-02 02:55:09,103 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,SelfDestructingSolverStorable25 [2023-04-02 02:55:09,104 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:55:09,104 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:55:09,104 INFO L85 PathProgramCache]: Analyzing trace with hash -644973475, now seen corresponding path program 1 times [2023-04-02 02:55:09,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:55:09,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702067135] [2023-04-02 02:55:09,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:55:09,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:55:09,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:09,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:55:09,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:09,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 02:55:09,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:09,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:55:09,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:09,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:55:09,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:09,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 02:55:09,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:09,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 02:55:09,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:09,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-04-02 02:55:09,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:09,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:55:09,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:09,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:55:09,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:09,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:55:09,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:09,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:55:09,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:09,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:55:09,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:09,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-04-02 02:55:09,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:09,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:55:09,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:09,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:55:09,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:09,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-04-02 02:55:09,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:09,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:55:09,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:09,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-04-02 02:55:09,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:09,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:55:09,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:09,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:55:09,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:09,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:55:09,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:09,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 02:55:09,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:09,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 02:55:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:09,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 02:55:09,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:09,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-04-02 02:55:09,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:09,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-04-02 02:55:09,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:09,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:55:09,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:09,856 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-04-02 02:55:09,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:55:09,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702067135] [2023-04-02 02:55:09,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702067135] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 02:55:09,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 02:55:09,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-04-02 02:55:09,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794576511] [2023-04-02 02:55:09,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 02:55:09,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 02:55:09,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:55:09,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 02:55:09,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-04-02 02:55:09,857 INFO L87 Difference]: Start difference. First operand 3935 states and 6398 transitions. Second operand has 15 states, 15 states have (on average 7.4) internal successors, (111), 7 states have internal predecessors, (111), 4 states have call successors, (29), 8 states have call predecessors, (29), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-04-02 02:55:20,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:55:20,562 INFO L93 Difference]: Finished difference Result 9139 states and 16527 transitions. [2023-04-02 02:55:20,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-02 02:55:20,562 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.4) internal successors, (111), 7 states have internal predecessors, (111), 4 states have call successors, (29), 8 states have call predecessors, (29), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 182 [2023-04-02 02:55:20,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:55:20,586 INFO L225 Difference]: With dead ends: 9139 [2023-04-02 02:55:20,586 INFO L226 Difference]: Without dead ends: 5902 [2023-04-02 02:55:20,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2023-04-02 02:55:20,595 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 2006 mSDsluCounter, 924 mSDsCounter, 0 mSdLazyCounter, 9088 mSolverCounterSat, 513 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2053 SdHoareTripleChecker+Valid, 1054 SdHoareTripleChecker+Invalid, 9601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 513 IncrementalHoareTripleChecker+Valid, 9088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-04-02 02:55:20,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2053 Valid, 1054 Invalid, 9601 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [513 Valid, 9088 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-04-02 02:55:20,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5902 states. [2023-04-02 02:55:21,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5902 to 3953. [2023-04-02 02:55:21,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3953 states, 2853 states have (on average 1.582895198037154) internal successors, (4516), 3001 states have internal predecessors, (4516), 819 states have call successors, (819), 226 states have call predecessors, (819), 280 states have return successors, (1056), 841 states have call predecessors, (1056), 811 states have call successors, (1056) [2023-04-02 02:55:21,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3953 states to 3953 states and 6391 transitions. [2023-04-02 02:55:21,914 INFO L78 Accepts]: Start accepts. Automaton has 3953 states and 6391 transitions. Word has length 182 [2023-04-02 02:55:21,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:55:21,914 INFO L495 AbstractCegarLoop]: Abstraction has 3953 states and 6391 transitions. [2023-04-02 02:55:21,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.4) internal successors, (111), 7 states have internal predecessors, (111), 4 states have call successors, (29), 8 states have call predecessors, (29), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-04-02 02:55:21,915 INFO L276 IsEmpty]: Start isEmpty. Operand 3953 states and 6391 transitions. [2023-04-02 02:55:21,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-04-02 02:55:21,918 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:55:21,918 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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, 1] [2023-04-02 02:55:21,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-04-02 02:55:21,919 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:55:21,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:55:21,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1027012115, now seen corresponding path program 1 times [2023-04-02 02:55:21,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:55:21,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903265431] [2023-04-02 02:55:21,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:55:21,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:55:21,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:22,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:55:22,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:22,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 02:55:22,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:22,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:55:22,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:22,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:55:22,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:22,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 02:55:22,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:22,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 02:55:22,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:22,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-04-02 02:55:22,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:22,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:55:22,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:22,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:55:22,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:22,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:55:22,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:22,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:55:22,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:22,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:55:22,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:22,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-04-02 02:55:22,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:22,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:55:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:22,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:55:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:22,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-04-02 02:55:22,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:22,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:55:22,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:22,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-04-02 02:55:22,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:22,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:55:22,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:22,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:55:22,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:22,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:55:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:22,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 02:55:22,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:22,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 02:55:22,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:22,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 02:55:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:22,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-04-02 02:55:22,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:22,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-04-02 02:55:22,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:22,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 02:55:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:22,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:55:22,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:55:22,969 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-04-02 02:55:22,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:55:22,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903265431] [2023-04-02 02:55:22,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903265431] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 02:55:22,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 02:55:22,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-04-02 02:55:22,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597035969] [2023-04-02 02:55:22,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 02:55:22,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-02 02:55:22,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:55:22,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-02 02:55:22,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2023-04-02 02:55:22,971 INFO L87 Difference]: Start difference. First operand 3953 states and 6391 transitions. Second operand has 19 states, 18 states have (on average 5.944444444444445) internal successors, (107), 11 states have internal predecessors, (107), 7 states have call successors, (30), 9 states have call predecessors, (30), 9 states have return successors, (26), 8 states have call predecessors, (26), 6 states have call successors, (26) [2023-04-02 02:56:04,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 02:56:04,131 INFO L93 Difference]: Finished difference Result 13982 states and 26887 transitions. [2023-04-02 02:56:04,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2023-04-02 02:56:04,131 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 5.944444444444445) internal successors, (107), 11 states have internal predecessors, (107), 7 states have call successors, (30), 9 states have call predecessors, (30), 9 states have return successors, (26), 8 states have call predecessors, (26), 6 states have call successors, (26) Word has length 184 [2023-04-02 02:56:04,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 02:56:04,173 INFO L225 Difference]: With dead ends: 13982 [2023-04-02 02:56:04,173 INFO L226 Difference]: Without dead ends: 10253 [2023-04-02 02:56:04,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 70 SyntacticMatches, 2 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6898 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=2458, Invalid=15098, Unknown=0, NotChecked=0, Total=17556 [2023-04-02 02:56:04,194 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 11736 mSDsluCounter, 2360 mSDsCounter, 0 mSdLazyCounter, 25897 mSolverCounterSat, 5321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11743 SdHoareTripleChecker+Valid, 2664 SdHoareTripleChecker+Invalid, 31218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 5321 IncrementalHoareTripleChecker+Valid, 25897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.4s IncrementalHoareTripleChecker+Time [2023-04-02 02:56:04,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11743 Valid, 2664 Invalid, 31218 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [5321 Valid, 25897 Invalid, 0 Unknown, 0 Unchecked, 26.4s Time] [2023-04-02 02:56:04,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10253 states. [2023-04-02 02:56:06,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10253 to 6412. [2023-04-02 02:56:06,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6412 states, 4717 states have (on average 1.5660377358490567) internal successors, (7387), 4939 states have internal predecessors, (7387), 1216 states have call successors, (1216), 420 states have call predecessors, (1216), 478 states have return successors, (1631), 1225 states have call predecessors, (1631), 1208 states have call successors, (1631) [2023-04-02 02:56:06,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6412 states to 6412 states and 10234 transitions. [2023-04-02 02:56:06,322 INFO L78 Accepts]: Start accepts. Automaton has 6412 states and 10234 transitions. Word has length 184 [2023-04-02 02:56:06,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 02:56:06,323 INFO L495 AbstractCegarLoop]: Abstraction has 6412 states and 10234 transitions. [2023-04-02 02:56:06,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 5.944444444444445) internal successors, (107), 11 states have internal predecessors, (107), 7 states have call successors, (30), 9 states have call predecessors, (30), 9 states have return successors, (26), 8 states have call predecessors, (26), 6 states have call successors, (26) [2023-04-02 02:56:06,323 INFO L276 IsEmpty]: Start isEmpty. Operand 6412 states and 10234 transitions. [2023-04-02 02:56:06,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-04-02 02:56:06,326 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 02:56:06,326 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1] [2023-04-02 02:56:06,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-04-02 02:56:06,326 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 02:56:06,327 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 02:56:06,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1138756051, now seen corresponding path program 1 times [2023-04-02 02:56:06,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 02:56:06,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949668885] [2023-04-02 02:56:06,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:56:06,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 02:56:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:56:06,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:56:06,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:56:06,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 02:56:06,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:56:06,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:56:06,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:56:06,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:56:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:56:06,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-04-02 02:56:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:56:06,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 02:56:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:56:06,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-04-02 02:56:06,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:56:07,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 02:56:07,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:56:07,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:56:07,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:56:07,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 02:56:07,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:56:07,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:56:07,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:56:07,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:56:07,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:56:07,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-04-02 02:56:07,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:56:07,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:56:07,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:56:07,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 02:56:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:56:07,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-04-02 02:56:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:56:07,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:56:07,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:56:07,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-04-02 02:56:07,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:56:07,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:56:07,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:56:07,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:56:07,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:56:07,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:56:07,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:56:07,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 02:56:07,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:56:07,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 02:56:07,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:56:07,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 02:56:07,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:56:07,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-04-02 02:56:07,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:56:07,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-04-02 02:56:07,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:56:07,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 02:56:07,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:56:07,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 02:56:07,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:56:07,428 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 02:56:07,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 02:56:07,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949668885] [2023-04-02 02:56:07,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949668885] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 02:56:07,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557538096] [2023-04-02 02:56:07,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 02:56:07,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 02:56:07,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 02:56:07,430 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) [2023-04-02 02:56:07,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-04-02 02:56:07,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 02:56:07,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 2958 conjuncts, 16 conjunts are in the unsatisfiable core [2023-04-02 02:56:07,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 02:56:07,974 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-04-02 02:56:07,974 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 02:56:08,721 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-04-02 02:56:08,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557538096] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 02:56:08,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 02:56:08,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 16 [2023-04-02 02:56:08,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174454381] [2023-04-02 02:56:08,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 02:56:08,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 02:56:08,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 02:56:08,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 02:56:08,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-04-02 02:56:08,723 INFO L87 Difference]: Start difference. First operand 6412 states and 10234 transitions. Second operand has 16 states, 16 states have (on average 13.0) internal successors, (208), 10 states have internal predecessors, (208), 8 states have call successors, (73), 11 states have call predecessors, (73), 10 states have return successors, (62), 9 states have call predecessors, (62), 7 states have call successors, (62)