/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/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/product-lines/elevator_spec1_product25.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 23:43:35,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 23:43:35,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 23:43:35,158 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 23:43:35,158 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 23:43:35,160 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 23:43:35,162 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 23:43:35,164 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 23:43:35,165 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 23:43:35,169 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 23:43:35,170 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 23:43:35,171 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 23:43:35,171 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 23:43:35,173 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 23:43:35,175 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 23:43:35,176 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 23:43:35,176 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 23:43:35,177 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 23:43:35,178 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 23:43:35,181 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 23:43:35,182 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 23:43:35,183 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 23:43:35,183 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 23:43:35,184 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 23:43:35,190 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 23:43:35,190 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 23:43:35,190 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 23:43:35,191 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 23:43:35,191 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 23:43:35,192 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 23:43:35,192 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 23:43:35,192 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 23:43:35,193 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 23:43:35,193 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 23:43:35,194 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 23:43:35,194 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 23:43:35,194 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 23:43:35,194 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 23:43:35,195 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 23:43:35,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 23:43:35,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 23:43:35,197 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-02 23:43:35,218 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 23:43:35,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 23:43:35,218 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 23:43:35,218 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 23:43:35,219 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 23:43:35,219 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 23:43:35,219 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 23:43:35,219 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 23:43:35,219 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 23:43:35,219 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 23:43:35,220 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 23:43:35,220 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 23:43:35,220 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 23:43:35,220 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 23:43:35,220 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 23:43:35,220 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 23:43:35,220 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 23:43:35,220 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 23:43:35,221 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 23:43:35,221 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 23:43:35,221 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 23:43:35,221 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 23:43:35,221 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 23:43:35,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 23:43:35,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 23:43:35,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 23:43:35,221 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 23:43:35,222 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 23:43:35,222 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 23:43:35,222 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 23:43:35,222 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 23:43:35,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 23:43:35,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 23:43:35,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 23:43:35,222 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 23:43:35,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 23:43:35,222 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 23:43:35,222 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 23:43:35,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 23:43:35,223 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 23:43:35,223 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 23:43:35,223 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 23:43:35,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 23:43:35,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 23:43:35,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 23:43:35,440 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 23:43:35,441 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 23:43:35,442 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product25.cil.c [2023-04-02 23:43:36,583 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 23:43:36,814 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 23:43:36,815 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product25.cil.c [2023-04-02 23:43:36,829 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5d493493/1838a285f9864230beb74852ee341fd4/FLAG1452d677c [2023-04-02 23:43:36,837 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5d493493/1838a285f9864230beb74852ee341fd4 [2023-04-02 23:43:36,839 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 23:43:36,840 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 23:43:36,857 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 23:43:36,857 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 23:43:36,859 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 23:43:36,860 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 11:43:36" (1/1) ... [2023-04-02 23:43:36,860 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dd371e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:43:36, skipping insertion in model container [2023-04-02 23:43:36,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 11:43:36" (1/1) ... [2023-04-02 23:43:36,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 23:43:36,926 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 23:43:37,133 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_product25.cil.c[13407,13420] [2023-04-02 23:43:37,295 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 23:43:37,305 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 23:43:37,332 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_product25.cil.c[13407,13420] [2023-04-02 23:43:37,467 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 23:43:37,490 INFO L208 MainTranslator]: Completed translation [2023-04-02 23:43:37,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:43:37 WrapperNode [2023-04-02 23:43:37,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 23:43:37,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 23:43:37,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 23:43:37,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 23:43:37,499 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:43:37" (1/1) ... [2023-04-02 23:43:37,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:43:37" (1/1) ... [2023-04-02 23:43:37,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:43:37" (1/1) ... [2023-04-02 23:43:37,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:43:37" (1/1) ... [2023-04-02 23:43:37,578 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:43:37" (1/1) ... [2023-04-02 23:43:37,589 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:43:37" (1/1) ... [2023-04-02 23:43:37,603 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:43:37" (1/1) ... [2023-04-02 23:43:37,609 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:43:37" (1/1) ... [2023-04-02 23:43:37,622 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 23:43:37,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 23:43:37,623 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 23:43:37,623 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 23:43:37,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:43:37" (1/1) ... [2023-04-02 23:43:37,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 23:43:37,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:43:37,646 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 23:43:37,671 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 23:43:37,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 23:43:37,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 23:43:37,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-02 23:43:37,703 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 23:43:37,704 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-02 23:43:37,704 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-02 23:43:37,704 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-02 23:43:37,705 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-02 23:43:37,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-02 23:43:37,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-02 23:43:37,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-02 23:43:37,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-02 23:43:37,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-02 23:43:37,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-02 23:43:37,705 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2023-04-02 23:43:37,705 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2023-04-02 23:43:37,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-02 23:43:37,706 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2023-04-02 23:43:37,706 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-04-02 23:43:37,706 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2023-04-02 23:43:37,706 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-04-02 23:43:37,706 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2023-04-02 23:43:37,706 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2023-04-02 23:43:37,706 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-04-02 23:43:37,706 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2023-04-02 23:43:37,706 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-02 23:43:37,706 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2023-04-02 23:43:37,706 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2023-04-02 23:43:37,706 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2023-04-02 23:43:37,706 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-02 23:43:37,706 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2023-04-02 23:43:37,706 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-02 23:43:37,706 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-02 23:43:37,706 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 23:43:37,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2023-04-02 23:43:37,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2023-04-02 23:43:37,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2023-04-02 23:43:37,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2023-04-02 23:43:37,707 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2023-04-02 23:43:37,707 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-04-02 23:43:37,707 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-04-02 23:43:37,707 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2023-04-02 23:43:37,707 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-04-02 23:43:37,708 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-04-02 23:43:37,708 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-04-02 23:43:37,708 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-04-02 23:43:37,709 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-02 23:43:37,709 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-04-02 23:43:37,709 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-04-02 23:43:37,709 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-04-02 23:43:37,709 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2023-04-02 23:43:37,709 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2023-04-02 23:43:37,709 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-04-02 23:43:37,710 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2023-04-02 23:43:37,710 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-04-02 23:43:37,711 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2023-04-02 23:43:37,711 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2023-04-02 23:43:37,711 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-04-02 23:43:37,711 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-04-02 23:43:37,712 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2023-04-02 23:43:37,712 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-04-02 23:43:37,712 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-04-02 23:43:37,712 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-04-02 23:43:37,712 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-04-02 23:43:37,712 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2023-04-02 23:43:37,713 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2023-04-02 23:43:37,713 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2023-04-02 23:43:37,713 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-04-02 23:43:37,716 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2023-04-02 23:43:37,716 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-04-02 23:43:37,716 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2023-04-02 23:43:37,716 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-04-02 23:43:37,716 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2023-04-02 23:43:37,716 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-02 23:43:37,716 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2023-04-02 23:43:37,716 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2023-04-02 23:43:37,716 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 23:43:37,716 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 23:43:37,716 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 23:43:37,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 23:43:37,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 23:43:37,716 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-02 23:43:37,717 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-02 23:43:37,717 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-02 23:43:37,717 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-02 23:43:37,717 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-02 23:43:37,717 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-02 23:43:37,717 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-02 23:43:37,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-02 23:43:37,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-02 23:43:37,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 23:43:37,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-02 23:43:37,717 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-02 23:43:37,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 23:43:37,717 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-02 23:43:37,717 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-02 23:43:37,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 23:43:37,717 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-02 23:43:37,717 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-02 23:43:37,718 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-02 23:43:37,718 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-04-02 23:43:37,718 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-04-02 23:43:37,718 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-02 23:43:37,718 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-04-02 23:43:37,718 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2023-04-02 23:43:37,718 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2023-04-02 23:43:37,718 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2023-04-02 23:43:37,718 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2023-04-02 23:43:37,718 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2023-04-02 23:43:37,718 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-02 23:43:37,718 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-02 23:43:37,718 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2023-04-02 23:43:37,718 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-04-02 23:43:37,718 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2023-04-02 23:43:37,718 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-04-02 23:43:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2023-04-02 23:43:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2023-04-02 23:43:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-04-02 23:43:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2023-04-02 23:43:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2023-04-02 23:43:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-02 23:43:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2023-04-02 23:43:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2023-04-02 23:43:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2023-04-02 23:43:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-02 23:43:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2023-04-02 23:43:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-02 23:43:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2023-04-02 23:43:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2023-04-02 23:43:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-02 23:43:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-02 23:43:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 23:43:37,720 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-04-02 23:43:37,720 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-04-02 23:43:37,720 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2023-04-02 23:43:37,720 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2023-04-02 23:43:37,720 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-04-02 23:43:37,720 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-04-02 23:43:37,720 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2023-04-02 23:43:37,720 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-04-02 23:43:37,720 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-04-02 23:43:37,720 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-04-02 23:43:37,720 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2023-04-02 23:43:37,720 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-04-02 23:43:37,720 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-04-02 23:43:37,720 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-02 23:43:37,720 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-04-02 23:43:37,720 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2023-04-02 23:43:37,720 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2023-04-02 23:43:37,721 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-04-02 23:43:37,721 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2023-04-02 23:43:37,721 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2023-04-02 23:43:37,721 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2023-04-02 23:43:37,721 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-04-02 23:43:37,721 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-04-02 23:43:37,721 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2023-04-02 23:43:37,721 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-04-02 23:43:37,721 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2023-04-02 23:43:37,721 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-04-02 23:43:37,721 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-04-02 23:43:37,721 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2023-04-02 23:43:37,721 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-04-02 23:43:37,721 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2023-04-02 23:43:37,721 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2023-04-02 23:43:37,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 23:43:37,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 23:43:37,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 23:43:38,023 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 23:43:38,026 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 23:43:38,988 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 23:43:39,593 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 23:43:39,593 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-04-02 23:43:39,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 11:43:39 BoogieIcfgContainer [2023-04-02 23:43:39,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 23:43:39,599 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 23:43:39,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 23:43:39,602 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 23:43:39,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 11:43:36" (1/3) ... [2023-04-02 23:43:39,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a95bea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 11:43:39, skipping insertion in model container [2023-04-02 23:43:39,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:43:37" (2/3) ... [2023-04-02 23:43:39,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a95bea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 11:43:39, skipping insertion in model container [2023-04-02 23:43:39,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 11:43:39" (3/3) ... [2023-04-02 23:43:39,604 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product25.cil.c [2023-04-02 23:43:39,617 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 23:43:39,617 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 23:43:39,679 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 23:43:39,684 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=FINITE_AUTOMATA, 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;@5906cdc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 23:43:39,684 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 23:43:39,692 INFO L276 IsEmpty]: Start isEmpty. Operand has 550 states, 320 states have (on average 1.5) internal successors, (480), 347 states have internal predecessors, (480), 168 states have call successors, (168), 49 states have call predecessors, (168), 49 states have return successors, (168), 159 states have call predecessors, (168), 168 states have call successors, (168) [2023-04-02 23:43:39,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-04-02 23:43:39,716 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:43:39,716 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-02 23:43:39,717 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:43:39,721 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:43:39,722 INFO L85 PathProgramCache]: Analyzing trace with hash -614917781, now seen corresponding path program 1 times [2023-04-02 23:43:39,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:43:39,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706373840] [2023-04-02 23:43:39,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:43:39,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:43:39,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:43:40,578 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-02 23:43:40,578 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:43:40,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706373840] [2023-04-02 23:43:40,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706373840] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:43:40,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:43:40,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 23:43:40,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338759139] [2023-04-02 23:43:40,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:43:40,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 23:43:40,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:43:40,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 23:43:40,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 23:43:40,606 INFO L87 Difference]: Start difference. First operand has 550 states, 320 states have (on average 1.5) internal successors, (480), 347 states have internal predecessors, (480), 168 states have call successors, (168), 49 states have call predecessors, (168), 49 states have return successors, (168), 159 states have call predecessors, (168), 168 states have call successors, (168) Second operand has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (23), 4 states have call predecessors, (23), 2 states have call successors, (23) [2023-04-02 23:43:40,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:43:40,816 INFO L93 Difference]: Finished difference Result 853 states and 1312 transitions. [2023-04-02 23:43:40,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 23:43:40,817 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (23), 4 states have call predecessors, (23), 2 states have call successors, (23) Word has length 115 [2023-04-02 23:43:40,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:43:40,827 INFO L225 Difference]: With dead ends: 853 [2023-04-02 23:43:40,828 INFO L226 Difference]: Without dead ends: 464 [2023-04-02 23:43:40,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 23:43:40,834 INFO L413 NwaCegarLoop]: 617 mSDtfsCounter, 34 mSDsluCounter, 3681 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 4298 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:43:40,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 4298 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:43:40,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2023-04-02 23:43:40,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 429. [2023-04-02 23:43:40,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 270 states have (on average 1.5333333333333334) internal successors, (414), 289 states have internal predecessors, (414), 115 states have call successors, (115), 46 states have call predecessors, (115), 43 states have return successors, (108), 105 states have call predecessors, (108), 107 states have call successors, (108) [2023-04-02 23:43:40,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 637 transitions. [2023-04-02 23:43:40,883 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 637 transitions. Word has length 115 [2023-04-02 23:43:40,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:43:40,883 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 637 transitions. [2023-04-02 23:43:40,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (23), 4 states have call predecessors, (23), 2 states have call successors, (23) [2023-04-02 23:43:40,884 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 637 transitions. [2023-04-02 23:43:40,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-04-02 23:43:40,886 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:43:40,886 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-02 23:43:40,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 23:43:40,887 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:43:40,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:43:40,887 INFO L85 PathProgramCache]: Analyzing trace with hash -89212884, now seen corresponding path program 1 times [2023-04-02 23:43:40,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:43:40,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698463561] [2023-04-02 23:43:40,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:43:40,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:43:40,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:43:41,288 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-02 23:43:41,288 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:43:41,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698463561] [2023-04-02 23:43:41,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698463561] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:43:41,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:43:41,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 23:43:41,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669871382] [2023-04-02 23:43:41,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:43:41,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 23:43:41,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:43:41,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 23:43:41,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 23:43:41,291 INFO L87 Difference]: Start difference. First operand 429 states and 637 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 5 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (24), 5 states have call predecessors, (24), 4 states have call successors, (24) [2023-04-02 23:43:43,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:43:43,361 INFO L93 Difference]: Finished difference Result 1296 states and 1994 transitions. [2023-04-02 23:43:43,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 23:43:43,362 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 5 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (24), 5 states have call predecessors, (24), 4 states have call successors, (24) Word has length 120 [2023-04-02 23:43:43,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:43:43,367 INFO L225 Difference]: With dead ends: 1296 [2023-04-02 23:43:43,367 INFO L226 Difference]: Without dead ends: 920 [2023-04-02 23:43:43,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2023-04-02 23:43:43,369 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 1700 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 3379 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1774 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 3897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 3379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-04-02 23:43:43,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1774 Valid, 609 Invalid, 3897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [518 Valid, 3379 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-04-02 23:43:43,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2023-04-02 23:43:43,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 893. [2023-04-02 23:43:43,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 893 states, 593 states have (on average 1.5784148397976392) internal successors, (936), 628 states have internal predecessors, (936), 220 states have call successors, (220), 78 states have call predecessors, (220), 79 states have return successors, (220), 210 states have call predecessors, (220), 212 states have call successors, (220) [2023-04-02 23:43:43,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1376 transitions. [2023-04-02 23:43:43,415 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1376 transitions. Word has length 120 [2023-04-02 23:43:43,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:43:43,415 INFO L495 AbstractCegarLoop]: Abstraction has 893 states and 1376 transitions. [2023-04-02 23:43:43,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 5 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (24), 5 states have call predecessors, (24), 4 states have call successors, (24) [2023-04-02 23:43:43,415 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1376 transitions. [2023-04-02 23:43:43,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-04-02 23:43:43,417 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:43:43,417 INFO L195 NwaCegarLoop]: trace histogram [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 23:43:43,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 23:43:43,418 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:43:43,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:43:43,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1532939301, now seen corresponding path program 1 times [2023-04-02 23:43:43,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:43:43,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778014435] [2023-04-02 23:43:43,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:43:43,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:43:43,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:43:43,621 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-02 23:43:43,622 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:43:43,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778014435] [2023-04-02 23:43:43,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778014435] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:43:43,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:43:43,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 23:43:43,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261811174] [2023-04-02 23:43:43,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:43:43,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 23:43:43,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:43:43,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 23:43:43,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 23:43:43,623 INFO L87 Difference]: Start difference. First operand 893 states and 1376 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2023-04-02 23:43:43,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:43:43,740 INFO L93 Difference]: Finished difference Result 1406 states and 2182 transitions. [2023-04-02 23:43:43,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 23:43:43,741 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) Word has length 124 [2023-04-02 23:43:43,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:43:43,744 INFO L225 Difference]: With dead ends: 1406 [2023-04-02 23:43:43,745 INFO L226 Difference]: Without dead ends: 915 [2023-04-02 23:43:43,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 23:43:43,747 INFO L413 NwaCegarLoop]: 599 mSDtfsCounter, 7 mSDsluCounter, 1761 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2360 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:43:43,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2360 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:43:43,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2023-04-02 23:43:43,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 905. [2023-04-02 23:43:43,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 602 states have (on average 1.569767441860465) internal successors, (945), 637 states have internal predecessors, (945), 220 states have call successors, (220), 78 states have call predecessors, (220), 82 states have return successors, (226), 213 states have call predecessors, (226), 212 states have call successors, (226) [2023-04-02 23:43:43,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1391 transitions. [2023-04-02 23:43:43,778 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1391 transitions. Word has length 124 [2023-04-02 23:43:43,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:43:43,779 INFO L495 AbstractCegarLoop]: Abstraction has 905 states and 1391 transitions. [2023-04-02 23:43:43,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2023-04-02 23:43:43,779 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1391 transitions. [2023-04-02 23:43:43,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-04-02 23:43:43,780 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:43:43,781 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-02 23:43:43,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 23:43:43,781 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:43:43,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:43:43,781 INFO L85 PathProgramCache]: Analyzing trace with hash 2108429811, now seen corresponding path program 1 times [2023-04-02 23:43:43,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:43:43,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217649915] [2023-04-02 23:43:43,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:43:43,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:43:43,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:43:44,187 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-02 23:43:44,187 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:43:44,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217649915] [2023-04-02 23:43:44,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217649915] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:43:44,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:43:44,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 23:43:44,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331100249] [2023-04-02 23:43:44,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:43:44,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 23:43:44,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:43:44,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 23:43:44,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-04-02 23:43:44,190 INFO L87 Difference]: Start difference. First operand 905 states and 1391 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 7 states have call successors, (29), 5 states have call predecessors, (29), 4 states have return successors, (25), 7 states have call predecessors, (25), 6 states have call successors, (25) [2023-04-02 23:43:45,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:43:45,933 INFO L93 Difference]: Finished difference Result 1904 states and 2936 transitions. [2023-04-02 23:43:45,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 23:43:45,934 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 7 states have call successors, (29), 5 states have call predecessors, (29), 4 states have return successors, (25), 7 states have call predecessors, (25), 6 states have call successors, (25) Word has length 128 [2023-04-02 23:43:45,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:43:45,939 INFO L225 Difference]: With dead ends: 1904 [2023-04-02 23:43:45,940 INFO L226 Difference]: Without dead ends: 1305 [2023-04-02 23:43:45,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-04-02 23:43:45,942 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 1402 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 3370 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1568 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 3821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 3370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-02 23:43:45,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1568 Valid, 449 Invalid, 3821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 3370 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-02 23:43:45,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2023-04-02 23:43:45,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 1255. [2023-04-02 23:43:45,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1255 states, 820 states have (on average 1.5219512195121951) internal successors, (1248), 872 states have internal predecessors, (1248), 312 states have call successors, (312), 114 states have call predecessors, (312), 122 states have return successors, (328), 304 states have call predecessors, (328), 304 states have call successors, (328) [2023-04-02 23:43:45,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1888 transitions. [2023-04-02 23:43:45,991 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1888 transitions. Word has length 128 [2023-04-02 23:43:45,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:43:45,992 INFO L495 AbstractCegarLoop]: Abstraction has 1255 states and 1888 transitions. [2023-04-02 23:43:45,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 7 states have call successors, (29), 5 states have call predecessors, (29), 4 states have return successors, (25), 7 states have call predecessors, (25), 6 states have call successors, (25) [2023-04-02 23:43:45,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1888 transitions. [2023-04-02 23:43:45,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-04-02 23:43:45,994 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:43:45,994 INFO L195 NwaCegarLoop]: trace histogram [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 23:43:45,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 23:43:45,994 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:43:45,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:43:45,994 INFO L85 PathProgramCache]: Analyzing trace with hash -84815879, now seen corresponding path program 1 times [2023-04-02 23:43:45,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:43:45,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891951310] [2023-04-02 23:43:45,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:43:45,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:43:46,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:43:46,237 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-02 23:43:46,237 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:43:46,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891951310] [2023-04-02 23:43:46,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891951310] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:43:46,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:43:46,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 23:43:46,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631188789] [2023-04-02 23:43:46,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:43:46,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 23:43:46,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:43:46,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 23:43:46,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 23:43:46,244 INFO L87 Difference]: Start difference. First operand 1255 states and 1888 transitions. Second operand has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25) [2023-04-02 23:43:46,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:43:46,457 INFO L93 Difference]: Finished difference Result 2348 states and 3621 transitions. [2023-04-02 23:43:46,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 23:43:46,458 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25) Word has length 131 [2023-04-02 23:43:46,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:43:46,464 INFO L225 Difference]: With dead ends: 2348 [2023-04-02 23:43:46,465 INFO L226 Difference]: Without dead ends: 1255 [2023-04-02 23:43:46,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-04-02 23:43:46,471 INFO L413 NwaCegarLoop]: 619 mSDtfsCounter, 211 mSDsluCounter, 2863 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 3482 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:43:46,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 3482 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:43:46,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2023-04-02 23:43:46,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1255. [2023-04-02 23:43:46,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1255 states, 820 states have (on average 1.4829268292682927) internal successors, (1216), 872 states have internal predecessors, (1216), 312 states have call successors, (312), 114 states have call predecessors, (312), 122 states have return successors, (328), 304 states have call predecessors, (328), 304 states have call successors, (328) [2023-04-02 23:43:46,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1856 transitions. [2023-04-02 23:43:46,521 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1856 transitions. Word has length 131 [2023-04-02 23:43:46,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:43:46,521 INFO L495 AbstractCegarLoop]: Abstraction has 1255 states and 1856 transitions. [2023-04-02 23:43:46,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25) [2023-04-02 23:43:46,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1856 transitions. [2023-04-02 23:43:46,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-04-02 23:43:46,523 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:43:46,523 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:43:46,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 23:43:46,524 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:43:46,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:43:46,524 INFO L85 PathProgramCache]: Analyzing trace with hash -216410577, now seen corresponding path program 1 times [2023-04-02 23:43:46,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:43:46,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253112293] [2023-04-02 23:43:46,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:43:46,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:43:46,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:43:47,003 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 23:43:47,003 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:43:47,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253112293] [2023-04-02 23:43:47,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253112293] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:43:47,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:43:47,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 23:43:47,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346226456] [2023-04-02 23:43:47,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:43:47,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 23:43:47,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:43:47,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 23:43:47,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 23:43:47,005 INFO L87 Difference]: Start difference. First operand 1255 states and 1856 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 5 states have call successors, (30), 4 states have call predecessors, (30), 4 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) [2023-04-02 23:43:48,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:43:48,665 INFO L93 Difference]: Finished difference Result 2217 states and 3291 transitions. [2023-04-02 23:43:48,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 23:43:48,666 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 5 states have call successors, (30), 4 states have call predecessors, (30), 4 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) Word has length 133 [2023-04-02 23:43:48,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:43:48,680 INFO L225 Difference]: With dead ends: 2217 [2023-04-02 23:43:48,681 INFO L226 Difference]: Without dead ends: 1325 [2023-04-02 23:43:48,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-04-02 23:43:48,685 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 991 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 3150 mSolverCounterSat, 407 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 3557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 407 IncrementalHoareTripleChecker+Valid, 3150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-02 23:43:48,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1072 Valid, 501 Invalid, 3557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [407 Valid, 3150 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-02 23:43:48,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2023-04-02 23:43:48,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 1282. [2023-04-02 23:43:48,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 838 states have (on average 1.477326968973747) internal successors, (1238), 894 states have internal predecessors, (1238), 313 states have call successors, (313), 119 states have call predecessors, (313), 130 states have return successors, (339), 304 states have call predecessors, (339), 305 states have call successors, (339) [2023-04-02 23:43:48,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 1890 transitions. [2023-04-02 23:43:48,741 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 1890 transitions. Word has length 133 [2023-04-02 23:43:48,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:43:48,742 INFO L495 AbstractCegarLoop]: Abstraction has 1282 states and 1890 transitions. [2023-04-02 23:43:48,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 5 states have call successors, (30), 4 states have call predecessors, (30), 4 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) [2023-04-02 23:43:48,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 1890 transitions. [2023-04-02 23:43:48,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-04-02 23:43:48,744 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:43:48,744 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:43:48,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 23:43:48,745 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:43:48,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:43:48,745 INFO L85 PathProgramCache]: Analyzing trace with hash -2028904282, now seen corresponding path program 1 times [2023-04-02 23:43:48,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:43:48,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943683550] [2023-04-02 23:43:48,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:43:48,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:43:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:43:49,026 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-02 23:43:49,026 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:43:49,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943683550] [2023-04-02 23:43:49,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943683550] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:43:49,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:43:49,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 23:43:49,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221171397] [2023-04-02 23:43:49,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:43:49,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 23:43:49,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:43:49,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 23:43:49,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-02 23:43:49,028 INFO L87 Difference]: Start difference. First operand 1282 states and 1890 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (27), 4 states have call predecessors, (27), 2 states have call successors, (27) [2023-04-02 23:43:49,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:43:49,408 INFO L93 Difference]: Finished difference Result 1322 states and 1947 transitions. [2023-04-02 23:43:49,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 23:43:49,409 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (27), 4 states have call predecessors, (27), 2 states have call successors, (27) Word has length 137 [2023-04-02 23:43:49,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:43:49,415 INFO L225 Difference]: With dead ends: 1322 [2023-04-02 23:43:49,415 INFO L226 Difference]: Without dead ends: 1305 [2023-04-02 23:43:49,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-04-02 23:43:49,418 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 639 mSDsluCounter, 945 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 1526 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 23:43:49,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [640 Valid, 1526 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 23:43:49,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2023-04-02 23:43:49,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 1286. [2023-04-02 23:43:49,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 842 states have (on average 1.4750593824228029) internal successors, (1242), 898 states have internal predecessors, (1242), 313 states have call successors, (313), 119 states have call predecessors, (313), 130 states have return successors, (339), 304 states have call predecessors, (339), 305 states have call successors, (339) [2023-04-02 23:43:49,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 1894 transitions. [2023-04-02 23:43:49,478 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 1894 transitions. Word has length 137 [2023-04-02 23:43:49,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:43:49,478 INFO L495 AbstractCegarLoop]: Abstraction has 1286 states and 1894 transitions. [2023-04-02 23:43:49,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (27), 4 states have call predecessors, (27), 2 states have call successors, (27) [2023-04-02 23:43:49,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 1894 transitions. [2023-04-02 23:43:49,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-04-02 23:43:49,480 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:43:49,480 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:43:49,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 23:43:49,480 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:43:49,481 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:43:49,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1655446865, now seen corresponding path program 1 times [2023-04-02 23:43:49,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:43:49,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298463188] [2023-04-02 23:43:49,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:43:49,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:43:49,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:43:49,819 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-02 23:43:49,819 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:43:49,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298463188] [2023-04-02 23:43:49,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298463188] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:43:49,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:43:49,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 23:43:49,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261757220] [2023-04-02 23:43:49,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:43:49,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 23:43:49,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:43:49,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 23:43:49,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 23:43:49,821 INFO L87 Difference]: Start difference. First operand 1286 states and 1894 transitions. Second operand has 8 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 2 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (28), 4 states have call predecessors, (28), 1 states have call successors, (28) [2023-04-02 23:43:50,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:43:50,020 INFO L93 Difference]: Finished difference Result 1307 states and 1920 transitions. [2023-04-02 23:43:50,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 23:43:50,021 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 2 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (28), 4 states have call predecessors, (28), 1 states have call successors, (28) Word has length 142 [2023-04-02 23:43:50,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:43:50,028 INFO L225 Difference]: With dead ends: 1307 [2023-04-02 23:43:50,028 INFO L226 Difference]: Without dead ends: 1290 [2023-04-02 23:43:50,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-02 23:43:50,030 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 10 mSDsluCounter, 3485 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 4069 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:43:50,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 4069 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:43:50,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2023-04-02 23:43:50,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1286. [2023-04-02 23:43:50,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 842 states have (on average 1.4714964370546317) internal successors, (1239), 898 states have internal predecessors, (1239), 313 states have call successors, (313), 119 states have call predecessors, (313), 130 states have return successors, (339), 304 states have call predecessors, (339), 305 states have call successors, (339) [2023-04-02 23:43:50,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 1891 transitions. [2023-04-02 23:43:50,095 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 1891 transitions. Word has length 142 [2023-04-02 23:43:50,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:43:50,095 INFO L495 AbstractCegarLoop]: Abstraction has 1286 states and 1891 transitions. [2023-04-02 23:43:50,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 2 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (28), 4 states have call predecessors, (28), 1 states have call successors, (28) [2023-04-02 23:43:50,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 1891 transitions. [2023-04-02 23:43:50,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-04-02 23:43:50,098 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:43:50,098 INFO L195 NwaCegarLoop]: trace histogram [3, 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 23:43:50,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 23:43:50,098 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:43:50,098 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:43:50,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1154589260, now seen corresponding path program 1 times [2023-04-02 23:43:50,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:43:50,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490460983] [2023-04-02 23:43:50,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:43:50,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:43:50,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:43:51,982 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-04-02 23:43:51,982 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:43:51,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490460983] [2023-04-02 23:43:51,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490460983] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:43:51,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459907436] [2023-04-02 23:43:51,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:43:51,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:43:51,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:43:51,999 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 23:43:52,046 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 23:43:52,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:43:52,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 2955 conjuncts, 23 conjunts are in the unsatisfiable core [2023-04-02 23:43:52,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:43:54,213 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-02 23:43:54,214 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:43:57,812 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-04-02 23:43:57,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459907436] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 23:43:57,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1439338708] [2023-04-02 23:43:57,828 INFO L159 IcfgInterpreter]: Started Sifa with 140 locations of interest [2023-04-02 23:43:57,828 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:43:57,830 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:43:57,833 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:43:57,834 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:43:59,905 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 184 for LOIs [2023-04-02 23:44:00,347 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 239 for LOIs [2023-04-02 23:44:02,786 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 239 for LOIs [2023-04-02 23:44:06,766 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 123071 conjuctions. This might take some time...