/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_product09.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 23:40:56,605 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 23:40:56,607 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 23:40:56,626 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 23:40:56,627 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 23:40:56,629 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 23:40:56,631 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 23:40:56,633 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 23:40:56,634 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 23:40:56,637 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 23:40:56,638 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 23:40:56,638 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 23:40:56,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 23:40:56,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 23:40:56,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 23:40:56,640 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 23:40:56,640 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 23:40:56,641 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 23:40:56,641 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 23:40:56,642 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 23:40:56,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 23:40:56,647 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 23:40:56,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 23:40:56,649 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 23:40:56,657 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 23:40:56,657 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 23:40:56,657 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 23:40:56,658 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 23:40:56,658 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 23:40:56,659 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 23:40:56,659 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 23:40:56,659 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 23:40:56,659 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 23:40:56,660 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 23:40:56,660 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 23:40:56,660 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 23:40:56,661 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 23:40:56,661 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 23:40:56,661 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 23:40:56,661 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 23:40:56,662 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 23:40:56,665 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 23:40:56,686 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 23:40:56,686 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 23:40:56,686 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 23:40:56,686 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 23:40:56,687 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 23:40:56,687 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 23:40:56,687 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 23:40:56,687 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 23:40:56,687 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 23:40:56,687 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 23:40:56,687 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 23:40:56,687 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 23:40:56,688 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 23:40:56,688 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 23:40:56,688 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 23:40:56,688 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 23:40:56,688 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 23:40:56,688 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 23:40:56,688 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 23:40:56,690 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 23:40:56,690 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 23:40:56,691 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 23:40:56,691 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 23:40:56,691 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 23:40:56,691 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 23:40:56,691 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 23:40:56,691 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 23:40:56,691 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 23:40:56,692 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 23:40:56,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 23:40:56,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 23:40:56,692 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 23:40:56,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 23:40:56,692 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 23:40:56,692 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 23:40:56,692 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 23:40:56,693 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 23:40:56,693 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 23:40:56,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 23:40:56,693 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 23:40:56,693 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 23:40:56,693 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 23:40:56,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 23:40:56,895 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 23:40:56,897 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 23:40:56,898 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 23:40:56,899 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 23:40:56,899 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product09.cil.c [2023-04-02 23:40:57,857 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 23:40:58,101 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 23:40:58,101 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product09.cil.c [2023-04-02 23:40:58,114 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a5af6956/a0f9e492667e48a5b9a7a06e642ba0ab/FLAG01a3cafa8 [2023-04-02 23:40:58,127 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a5af6956/a0f9e492667e48a5b9a7a06e642ba0ab [2023-04-02 23:40:58,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 23:40:58,130 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 23:40:58,133 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 23:40:58,133 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 23:40:58,135 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 23:40:58,136 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 11:40:58" (1/1) ... [2023-04-02 23:40:58,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21b477a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:40:58, skipping insertion in model container [2023-04-02 23:40:58,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 11:40:58" (1/1) ... [2023-04-02 23:40:58,141 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 23:40:58,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 23:40:58,305 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product09.cil.c[1545,1558] [2023-04-02 23:40:58,536 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 23:40:58,543 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 23:40:58,551 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product09.cil.c[1545,1558] [2023-04-02 23:40:58,610 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 23:40:58,631 INFO L208 MainTranslator]: Completed translation [2023-04-02 23:40:58,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:40:58 WrapperNode [2023-04-02 23:40:58,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 23:40:58,632 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 23:40:58,632 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 23:40:58,632 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 23:40:58,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:40:58" (1/1) ... [2023-04-02 23:40:58,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:40:58" (1/1) ... [2023-04-02 23:40:58,661 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:40:58" (1/1) ... [2023-04-02 23:40:58,661 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:40:58" (1/1) ... [2023-04-02 23:40:58,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:40:58" (1/1) ... [2023-04-02 23:40:58,717 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:40:58" (1/1) ... [2023-04-02 23:40:58,727 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:40:58" (1/1) ... [2023-04-02 23:40:58,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:40:58" (1/1) ... [2023-04-02 23:40:58,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 23:40:58,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 23:40:58,749 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 23:40:58,749 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 23:40:58,753 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:40:58" (1/1) ... [2023-04-02 23:40:58,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 23:40:58,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:40:58,775 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 23:40:58,785 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 23:40:58,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 23:40:58,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 23:40:58,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-02 23:40:58,809 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 23:40:58,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-02 23:40:58,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-02 23:40:58,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-02 23:40:58,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-02 23:40:58,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-02 23:40:58,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-02 23:40:58,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-02 23:40:58,809 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-02 23:40:58,809 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-02 23:40:58,809 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-02 23:40:58,809 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-02 23:40:58,809 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2023-04-02 23:40:58,809 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-04-02 23:40:58,810 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2023-04-02 23:40:58,810 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-04-02 23:40:58,810 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2023-04-02 23:40:58,810 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2023-04-02 23:40:58,810 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-04-02 23:40:58,810 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2023-04-02 23:40:58,810 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-02 23:40:58,810 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2023-04-02 23:40:58,810 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2023-04-02 23:40:58,810 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2023-04-02 23:40:58,810 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-02 23:40:58,810 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2023-04-02 23:40:58,810 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-02 23:40:58,810 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-02 23:40:58,810 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 23:40:58,810 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2023-04-02 23:40:58,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2023-04-02 23:40:58,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2023-04-02 23:40:58,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2023-04-02 23:40:58,811 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2023-04-02 23:40:58,811 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2023-04-02 23:40:58,811 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2023-04-02 23:40:58,811 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-04-02 23:40:58,811 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-04-02 23:40:58,811 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2023-04-02 23:40:58,811 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-04-02 23:40:58,812 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-04-02 23:40:58,812 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-04-02 23:40:58,813 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-04-02 23:40:58,813 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2023-04-02 23:40:58,813 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2023-04-02 23:40:58,813 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-04-02 23:40:58,813 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-04-02 23:40:58,813 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2023-04-02 23:40:58,813 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-04-02 23:40:58,813 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-04-02 23:40:58,813 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2023-04-02 23:40:58,814 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-04-02 23:40:58,814 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-04-02 23:40:58,814 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-04-02 23:40:58,814 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-04-02 23:40:58,814 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2023-04-02 23:40:58,814 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2023-04-02 23:40:58,814 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2023-04-02 23:40:58,814 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-04-02 23:40:58,814 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2023-04-02 23:40:58,815 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-04-02 23:40:58,815 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2023-04-02 23:40:58,815 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-04-02 23:40:58,815 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2023-04-02 23:40:58,815 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-02 23:40:58,815 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2023-04-02 23:40:58,815 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2023-04-02 23:40:58,815 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-02 23:40:58,815 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-04-02 23:40:58,815 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-04-02 23:40:58,815 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-04-02 23:40:58,815 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 23:40:58,815 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 23:40:58,815 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 23:40:58,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 23:40:58,815 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 23:40:58,816 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-02 23:40:58,816 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-02 23:40:58,816 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-02 23:40:58,816 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-02 23:40:58,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-02 23:40:58,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-02 23:40:58,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 23:40:58,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-02 23:40:58,817 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-02 23:40:58,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 23:40:58,818 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-02 23:40:58,818 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-02 23:40:58,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 23:40:58,818 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-02 23:40:58,818 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-02 23:40:58,818 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-02 23:40:58,818 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-02 23:40:58,818 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-02 23:40:58,818 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-02 23:40:58,818 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-02 23:40:58,818 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-02 23:40:58,818 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2023-04-02 23:40:58,818 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-04-02 23:40:58,818 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-04-02 23:40:58,818 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-04-02 23:40:58,818 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2023-04-02 23:40:58,818 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-04-02 23:40:58,819 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2023-04-02 23:40:58,819 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2023-04-02 23:40:58,819 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-04-02 23:40:58,819 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-02 23:40:58,819 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2023-04-02 23:40:58,819 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2023-04-02 23:40:58,819 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-04-02 23:40:58,819 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-02 23:40:58,819 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2023-04-02 23:40:58,819 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2023-04-02 23:40:58,820 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2023-04-02 23:40:58,820 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2023-04-02 23:40:58,820 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2023-04-02 23:40:58,820 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-02 23:40:58,821 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2023-04-02 23:40:58,821 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-02 23:40:58,823 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2023-04-02 23:40:58,823 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2023-04-02 23:40:58,828 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-02 23:40:58,828 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-02 23:40:58,828 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 23:40:58,828 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-04-02 23:40:58,828 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-04-02 23:40:58,828 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2023-04-02 23:40:58,828 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2023-04-02 23:40:58,828 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2023-04-02 23:40:58,828 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2023-04-02 23:40:58,828 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2023-04-02 23:40:58,828 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-04-02 23:40:58,828 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-04-02 23:40:58,829 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2023-04-02 23:40:58,829 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-04-02 23:40:58,829 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-04-02 23:40:58,829 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-04-02 23:40:58,829 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2023-04-02 23:40:58,829 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-02 23:40:58,829 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-04-02 23:40:58,829 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-04-02 23:40:58,829 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2023-04-02 23:40:58,829 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2023-04-02 23:40:58,829 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-04-02 23:40:58,829 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2023-04-02 23:40:58,829 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-04-02 23:40:58,829 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-04-02 23:40:58,829 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2023-04-02 23:40:58,829 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-04-02 23:40:58,829 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2023-04-02 23:40:58,829 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-04-02 23:40:58,829 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-04-02 23:40:58,829 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2023-04-02 23:40:58,829 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-04-02 23:40:58,830 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2023-04-02 23:40:58,830 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2023-04-02 23:40:58,830 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-04-02 23:40:58,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 23:40:58,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 23:40:58,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 23:40:59,081 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 23:40:59,083 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 23:41:00,034 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 23:41:00,593 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 23:41:00,593 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-04-02 23:41:00,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 11:41:00 BoogieIcfgContainer [2023-04-02 23:41:00,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 23:41:00,599 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 23:41:00,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 23:41:00,601 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 23:41:00,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 11:40:58" (1/3) ... [2023-04-02 23:41:00,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@249a55e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 11:41:00, skipping insertion in model container [2023-04-02 23:41:00,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:40:58" (2/3) ... [2023-04-02 23:41:00,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@249a55e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 11:41:00, skipping insertion in model container [2023-04-02 23:41:00,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 11:41:00" (3/3) ... [2023-04-02 23:41:00,602 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product09.cil.c [2023-04-02 23:41:00,615 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 23:41:00,615 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 23:41:00,668 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 23:41:00,674 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;@14709e00, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 23:41:00,674 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 23:41:00,681 INFO L276 IsEmpty]: Start isEmpty. Operand has 538 states, 315 states have (on average 1.507936507936508) internal successors, (475), 342 states have internal predecessors, (475), 164 states have call successors, (164), 46 states have call predecessors, (164), 46 states have return successors, (164), 155 states have call predecessors, (164), 164 states have call successors, (164) [2023-04-02 23:41:00,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-04-02 23:41:00,704 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:41:00,705 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 23:41:00,706 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:41:00,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:41:00,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1721233864, now seen corresponding path program 1 times [2023-04-02 23:41:00,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:41:00,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923697425] [2023-04-02 23:41:00,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:41:00,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:41:00,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:41:01,515 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 23:41:01,516 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:41:01,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923697425] [2023-04-02 23:41:01,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923697425] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:41:01,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:41:01,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 23:41:01,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213530639] [2023-04-02 23:41:01,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:41:01,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 23:41:01,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:41:01,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 23:41:01,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 23:41:01,556 INFO L87 Difference]: Start difference. First operand has 538 states, 315 states have (on average 1.507936507936508) internal successors, (475), 342 states have internal predecessors, (475), 164 states have call successors, (164), 46 states have call predecessors, (164), 46 states have return successors, (164), 155 states have call predecessors, (164), 164 states have call successors, (164) Second operand has 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 23:41:01,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:41:01,825 INFO L93 Difference]: Finished difference Result 829 states and 1286 transitions. [2023-04-02 23:41:01,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 23:41:01,827 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 23:41:01,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:41:01,837 INFO L225 Difference]: With dead ends: 829 [2023-04-02 23:41:01,837 INFO L226 Difference]: Without dead ends: 452 [2023-04-02 23:41:01,842 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 23:41:01,844 INFO L413 NwaCegarLoop]: 606 mSDtfsCounter, 34 mSDsluCounter, 3616 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 4222 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:41:01,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 4222 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:41:01,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2023-04-02 23:41:01,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 417. [2023-04-02 23:41:01,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 265 states have (on average 1.5433962264150944) internal successors, (409), 284 states have internal predecessors, (409), 111 states have call successors, (111), 43 states have call predecessors, (111), 40 states have return successors, (104), 101 states have call predecessors, (104), 103 states have call successors, (104) [2023-04-02 23:41:01,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 624 transitions. [2023-04-02 23:41:01,895 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 624 transitions. Word has length 115 [2023-04-02 23:41:01,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:41:01,895 INFO L495 AbstractCegarLoop]: Abstraction has 417 states and 624 transitions. [2023-04-02 23:41:01,896 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 23:41:01,896 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 624 transitions. [2023-04-02 23:41:01,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-04-02 23:41:01,898 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:41:01,898 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 23:41:01,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 23:41:01,899 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:41:01,899 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:41:01,899 INFO L85 PathProgramCache]: Analyzing trace with hash -913457391, now seen corresponding path program 1 times [2023-04-02 23:41:01,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:41:01,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606427885] [2023-04-02 23:41:01,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:41:01,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:41:01,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:41:02,428 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 23:41:02,429 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:41:02,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606427885] [2023-04-02 23:41:02,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606427885] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:41:02,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:41:02,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 23:41:02,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808858315] [2023-04-02 23:41:02,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:41:02,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 23:41:02,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:41:02,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 23:41:02,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 23:41:02,435 INFO L87 Difference]: Start difference. First operand 417 states and 624 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 23:41:04,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:41:04,445 INFO L93 Difference]: Finished difference Result 1260 states and 1955 transitions. [2023-04-02 23:41:04,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 23:41:04,445 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 23:41:04,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:41:04,450 INFO L225 Difference]: With dead ends: 1260 [2023-04-02 23:41:04,451 INFO L226 Difference]: Without dead ends: 896 [2023-04-02 23:41:04,452 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 23:41:04,453 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 1681 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 3314 mSolverCounterSat, 502 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1751 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 3816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 502 IncrementalHoareTripleChecker+Valid, 3314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-04-02 23:41:04,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1751 Valid, 609 Invalid, 3816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [502 Valid, 3314 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-04-02 23:41:04,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2023-04-02 23:41:04,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 869. [2023-04-02 23:41:04,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 583 states have (on average 1.588336192109777) internal successors, (926), 618 states have internal predecessors, (926), 212 states have call successors, (212), 72 states have call predecessors, (212), 73 states have return successors, (212), 202 states have call predecessors, (212), 204 states have call successors, (212) [2023-04-02 23:41:04,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1350 transitions. [2023-04-02 23:41:04,501 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1350 transitions. Word has length 120 [2023-04-02 23:41:04,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:41:04,501 INFO L495 AbstractCegarLoop]: Abstraction has 869 states and 1350 transitions. [2023-04-02 23:41:04,502 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 23:41:04,502 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1350 transitions. [2023-04-02 23:41:04,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-04-02 23:41:04,503 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:41:04,503 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 23:41:04,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 23:41:04,504 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:41:04,504 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:41:04,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1674373420, now seen corresponding path program 1 times [2023-04-02 23:41:04,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:41:04,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272812823] [2023-04-02 23:41:04,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:41:04,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:41:04,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:41:04,728 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 23:41:04,728 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:41:04,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272812823] [2023-04-02 23:41:04,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272812823] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:41:04,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:41:04,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 23:41:04,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785532438] [2023-04-02 23:41:04,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:41:04,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 23:41:04,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:41:04,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 23:41:04,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 23:41:04,731 INFO L87 Difference]: Start difference. First operand 869 states and 1350 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 23:41:04,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:41:04,835 INFO L93 Difference]: Finished difference Result 1370 states and 2143 transitions. [2023-04-02 23:41:04,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 23:41:04,835 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 23:41:04,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:41:04,839 INFO L225 Difference]: With dead ends: 1370 [2023-04-02 23:41:04,839 INFO L226 Difference]: Without dead ends: 891 [2023-04-02 23:41:04,841 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 23:41:04,841 INFO L413 NwaCegarLoop]: 589 mSDtfsCounter, 7 mSDsluCounter, 1731 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2320 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:41:04,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2320 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:41:04,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2023-04-02 23:41:04,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 881. [2023-04-02 23:41:04,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 592 states have (on average 1.5793918918918919) internal successors, (935), 627 states have internal predecessors, (935), 212 states have call successors, (212), 72 states have call predecessors, (212), 76 states have return successors, (218), 205 states have call predecessors, (218), 204 states have call successors, (218) [2023-04-02 23:41:04,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1365 transitions. [2023-04-02 23:41:04,875 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1365 transitions. Word has length 124 [2023-04-02 23:41:04,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:41:04,875 INFO L495 AbstractCegarLoop]: Abstraction has 881 states and 1365 transitions. [2023-04-02 23:41:04,875 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 23:41:04,875 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1365 transitions. [2023-04-02 23:41:04,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-04-02 23:41:04,877 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:41:04,877 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 23:41:04,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 23:41:04,877 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:41:04,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:41:04,878 INFO L85 PathProgramCache]: Analyzing trace with hash 557498500, now seen corresponding path program 1 times [2023-04-02 23:41:04,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:41:04,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574047957] [2023-04-02 23:41:04,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:41:04,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:41:04,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:41:05,269 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 23:41:05,270 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:41:05,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574047957] [2023-04-02 23:41:05,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574047957] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:41:05,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:41:05,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 23:41:05,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099665261] [2023-04-02 23:41:05,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:41:05,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 23:41:05,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:41:05,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 23:41:05,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-04-02 23:41:05,271 INFO L87 Difference]: Start difference. First operand 881 states and 1365 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 23:41:07,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:41:07,038 INFO L93 Difference]: Finished difference Result 1856 states and 2884 transitions. [2023-04-02 23:41:07,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 23:41:07,039 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 23:41:07,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:41:07,045 INFO L225 Difference]: With dead ends: 1856 [2023-04-02 23:41:07,045 INFO L226 Difference]: Without dead ends: 1269 [2023-04-02 23:41:07,047 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 23:41:07,049 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 2484 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 2667 mSolverCounterSat, 962 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2642 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 3629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 962 IncrementalHoareTripleChecker+Valid, 2667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-02 23:41:07,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2642 Valid, 371 Invalid, 3629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [962 Valid, 2667 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-02 23:41:07,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2023-04-02 23:41:07,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1219. [2023-04-02 23:41:07,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 805 states have (on average 1.5316770186335404) internal successors, (1233), 857 states have internal predecessors, (1233), 300 states have call successors, (300), 105 states have call predecessors, (300), 113 states have return successors, (316), 292 states have call predecessors, (316), 292 states have call successors, (316) [2023-04-02 23:41:07,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1849 transitions. [2023-04-02 23:41:07,107 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 1849 transitions. Word has length 128 [2023-04-02 23:41:07,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:41:07,108 INFO L495 AbstractCegarLoop]: Abstraction has 1219 states and 1849 transitions. [2023-04-02 23:41:07,108 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 23:41:07,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 1849 transitions. [2023-04-02 23:41:07,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-04-02 23:41:07,109 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:41:07,109 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 23:41:07,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 23:41:07,109 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:41:07,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:41:07,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1256848863, now seen corresponding path program 1 times [2023-04-02 23:41:07,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:41:07,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597587199] [2023-04-02 23:41:07,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:41:07,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:41:07,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:41:07,388 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 23:41:07,388 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:41:07,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597587199] [2023-04-02 23:41:07,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597587199] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:41:07,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:41:07,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 23:41:07,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914487128] [2023-04-02 23:41:07,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:41:07,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 23:41:07,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:41:07,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 23:41:07,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 23:41:07,390 INFO L87 Difference]: Start difference. First operand 1219 states and 1849 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 23:41:07,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:41:07,640 INFO L93 Difference]: Finished difference Result 2288 states and 3556 transitions. [2023-04-02 23:41:07,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 23:41:07,641 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 23:41:07,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:41:07,646 INFO L225 Difference]: With dead ends: 2288 [2023-04-02 23:41:07,646 INFO L226 Difference]: Without dead ends: 1219 [2023-04-02 23:41:07,649 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 23:41:07,650 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 211 mSDsluCounter, 2813 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 3422 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:41:07,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 3422 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:41:07,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2023-04-02 23:41:07,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1219. [2023-04-02 23:41:07,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 805 states have (on average 1.4919254658385093) internal successors, (1201), 857 states have internal predecessors, (1201), 300 states have call successors, (300), 105 states have call predecessors, (300), 113 states have return successors, (316), 292 states have call predecessors, (316), 292 states have call successors, (316) [2023-04-02 23:41:07,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1817 transitions. [2023-04-02 23:41:07,695 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 1817 transitions. Word has length 131 [2023-04-02 23:41:07,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:41:07,695 INFO L495 AbstractCegarLoop]: Abstraction has 1219 states and 1817 transitions. [2023-04-02 23:41:07,696 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 23:41:07,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 1817 transitions. [2023-04-02 23:41:07,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-04-02 23:41:07,697 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:41:07,697 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 23:41:07,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 23:41:07,697 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:41:07,698 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:41:07,698 INFO L85 PathProgramCache]: Analyzing trace with hash 536076687, now seen corresponding path program 1 times [2023-04-02 23:41:07,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:41:07,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748205591] [2023-04-02 23:41:07,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:41:07,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:41:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:41:08,079 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 23:41:08,079 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:41:08,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748205591] [2023-04-02 23:41:08,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748205591] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:41:08,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:41:08,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 23:41:08,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603036622] [2023-04-02 23:41:08,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:41:08,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 23:41:08,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:41:08,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 23:41:08,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 23:41:08,081 INFO L87 Difference]: Start difference. First operand 1219 states and 1817 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 23:41:09,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:41:09,708 INFO L93 Difference]: Finished difference Result 2157 states and 3226 transitions. [2023-04-02 23:41:09,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 23:41:09,709 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 23:41:09,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:41:09,715 INFO L225 Difference]: With dead ends: 2157 [2023-04-02 23:41:09,715 INFO L226 Difference]: Without dead ends: 1289 [2023-04-02 23:41:09,717 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 23:41:09,718 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 972 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 3085 mSolverCounterSat, 391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1049 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 3476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 391 IncrementalHoareTripleChecker+Valid, 3085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-02 23:41:09,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1049 Valid, 501 Invalid, 3476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [391 Valid, 3085 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-02 23:41:09,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2023-04-02 23:41:09,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 1246. [2023-04-02 23:41:09,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1246 states, 823 states have (on average 1.486026731470231) internal successors, (1223), 879 states have internal predecessors, (1223), 301 states have call successors, (301), 110 states have call predecessors, (301), 121 states have return successors, (327), 292 states have call predecessors, (327), 293 states have call successors, (327) [2023-04-02 23:41:09,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 1851 transitions. [2023-04-02 23:41:09,764 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 1851 transitions. Word has length 133 [2023-04-02 23:41:09,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:41:09,764 INFO L495 AbstractCegarLoop]: Abstraction has 1246 states and 1851 transitions. [2023-04-02 23:41:09,765 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 23:41:09,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 1851 transitions. [2023-04-02 23:41:09,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-04-02 23:41:09,766 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:41:09,766 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:41:09,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 23:41:09,767 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:41:09,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:41:09,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1971666356, now seen corresponding path program 1 times [2023-04-02 23:41:09,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:41:09,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10808802] [2023-04-02 23:41:09,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:41:09,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:41:09,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:41:10,034 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-04-02 23:41:10,034 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:41:10,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10808802] [2023-04-02 23:41:10,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10808802] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:41:10,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:41:10,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 23:41:10,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717235594] [2023-04-02 23:41:10,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:41:10,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 23:41:10,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:41:10,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 23:41:10,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 23:41:10,036 INFO L87 Difference]: Start difference. First operand 1246 states and 1851 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, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 4 states have call predecessors, (28), 2 states have call successors, (28) [2023-04-02 23:41:10,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:41:10,499 INFO L93 Difference]: Finished difference Result 1286 states and 1908 transitions. [2023-04-02 23:41:10,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 23:41:10,499 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, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 4 states have call predecessors, (28), 2 states have call successors, (28) Word has length 140 [2023-04-02 23:41:10,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:41:10,507 INFO L225 Difference]: With dead ends: 1286 [2023-04-02 23:41:10,507 INFO L226 Difference]: Without dead ends: 1269 [2023-04-02 23:41:10,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-04-02 23:41:10,509 INFO L413 NwaCegarLoop]: 571 mSDtfsCounter, 627 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 1862 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 23:41:10,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [628 Valid, 1862 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 23:41:10,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2023-04-02 23:41:10,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1250. [2023-04-02 23:41:10,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 827 states have (on average 1.4836759371221282) internal successors, (1227), 883 states have internal predecessors, (1227), 301 states have call successors, (301), 110 states have call predecessors, (301), 121 states have return successors, (327), 292 states have call predecessors, (327), 293 states have call successors, (327) [2023-04-02 23:41:10,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1855 transitions. [2023-04-02 23:41:10,558 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1855 transitions. Word has length 140 [2023-04-02 23:41:10,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:41:10,558 INFO L495 AbstractCegarLoop]: Abstraction has 1250 states and 1855 transitions. [2023-04-02 23:41:10,559 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, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 4 states have call predecessors, (28), 2 states have call successors, (28) [2023-04-02 23:41:10,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1855 transitions. [2023-04-02 23:41:10,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-04-02 23:41:10,560 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:41:10,560 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 23:41:10,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 23:41:10,560 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:41:10,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:41:10,561 INFO L85 PathProgramCache]: Analyzing trace with hash -2168004, now seen corresponding path program 1 times [2023-04-02 23:41:10,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:41:10,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976021949] [2023-04-02 23:41:10,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:41:10,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:41:10,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:41:10,892 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 23:41:10,892 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:41:10,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976021949] [2023-04-02 23:41:10,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976021949] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:41:10,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:41:10,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 23:41:10,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749858563] [2023-04-02 23:41:10,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:41:10,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 23:41:10,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:41:10,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 23:41:10,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 23:41:10,894 INFO L87 Difference]: Start difference. First operand 1250 states and 1855 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 23:41:11,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:41:11,056 INFO L93 Difference]: Finished difference Result 1271 states and 1881 transitions. [2023-04-02 23:41:11,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 23:41:11,057 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 23:41:11,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:41:11,064 INFO L225 Difference]: With dead ends: 1271 [2023-04-02 23:41:11,064 INFO L226 Difference]: Without dead ends: 1254 [2023-04-02 23:41:11,064 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 23:41:11,067 INFO L413 NwaCegarLoop]: 574 mSDtfsCounter, 10 mSDsluCounter, 3425 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 3999 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:41:11,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 3999 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:41:11,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2023-04-02 23:41:11,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1250. [2023-04-02 23:41:11,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 827 states have (on average 1.4800483675937122) internal successors, (1224), 883 states have internal predecessors, (1224), 301 states have call successors, (301), 110 states have call predecessors, (301), 121 states have return successors, (327), 292 states have call predecessors, (327), 293 states have call successors, (327) [2023-04-02 23:41:11,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1852 transitions. [2023-04-02 23:41:11,121 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1852 transitions. Word has length 142 [2023-04-02 23:41:11,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:41:11,121 INFO L495 AbstractCegarLoop]: Abstraction has 1250 states and 1852 transitions. [2023-04-02 23:41:11,121 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 23:41:11,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1852 transitions. [2023-04-02 23:41:11,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-04-02 23:41:11,123 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:41:11,123 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:41:11,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 23:41:11,123 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:41:11,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:41:11,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1128870352, now seen corresponding path program 1 times [2023-04-02 23:41:11,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:41:11,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879432279] [2023-04-02 23:41:11,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:41:11,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:41:11,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:41:13,055 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-04-02 23:41:13,055 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:41:13,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879432279] [2023-04-02 23:41:13,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879432279] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:41:13,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341169347] [2023-04-02 23:41:13,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:41:13,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:41:13,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:41:13,056 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 23:41:13,058 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 23:41:13,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:41:13,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 2948 conjuncts, 23 conjunts are in the unsatisfiable core [2023-04-02 23:41:13,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:41:15,171 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 23:41:15,171 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:41:18,539 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-04-02 23:41:18,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341169347] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 23:41:18,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1493947610] [2023-04-02 23:41:18,556 INFO L159 IcfgInterpreter]: Started Sifa with 141 locations of interest [2023-04-02 23:41:18,556 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:41:18,559 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:41:18,562 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:41:18,562 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:41:20,381 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 178 for LOIs [2023-04-02 23:41:20,795 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 232 for LOIs [2023-04-02 23:41:23,182 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 232 for LOIs [2023-04-02 23:41:26,722 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 123071 conjuctions. This might take some time...