/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_spec3_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 23:53:26,782 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 23:53:26,783 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 23:53:26,812 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 23:53:26,813 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 23:53:26,814 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 23:53:26,816 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 23:53:26,818 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 23:53:26,821 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 23:53:26,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 23:53:26,825 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 23:53:26,826 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 23:53:26,827 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 23:53:26,828 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 23:53:26,829 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 23:53:26,831 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 23:53:26,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 23:53:26,832 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 23:53:26,833 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 23:53:26,836 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 23:53:26,837 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 23:53:26,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 23:53:26,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 23:53:26,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 23:53:26,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 23:53:26,845 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 23:53:26,845 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 23:53:26,846 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 23:53:26,846 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 23:53:26,847 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 23:53:26,847 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 23:53:26,847 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 23:53:26,848 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 23:53:26,849 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 23:53:26,849 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 23:53:26,849 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 23:53:26,850 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 23:53:26,850 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 23:53:26,850 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 23:53:26,850 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 23:53:26,851 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 23:53:26,852 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 23:53:26,874 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 23:53:26,874 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 23:53:26,875 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 23:53:26,875 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 23:53:26,875 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 23:53:26,875 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 23:53:26,875 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 23:53:26,875 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 23:53:26,876 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 23:53:26,876 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 23:53:26,876 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 23:53:26,876 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 23:53:26,876 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 23:53:26,877 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 23:53:26,877 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 23:53:26,877 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 23:53:26,877 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 23:53:26,877 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 23:53:26,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 23:53:26,877 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 23:53:26,878 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 23:53:26,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 23:53:26,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 23:53:26,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 23:53:26,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 23:53:26,878 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 23:53:26,878 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 23:53:26,878 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 23:53:26,878 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 23:53:26,879 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 23:53:26,879 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 23:53:26,879 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 23:53:26,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 23:53:26,879 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 23:53:26,879 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 23:53:26,879 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 23:53:26,879 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 23:53:26,879 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 23:53:26,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 23:53:26,880 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 23:53:26,880 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 23:53:26,880 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 23:53:27,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 23:53:27,062 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 23:53:27,063 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 23:53:27,064 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 23:53:27,065 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 23:53:27,065 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product28.cil.c [2023-04-02 23:53:28,161 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 23:53:28,458 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 23:53:28,458 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product28.cil.c [2023-04-02 23:53:28,482 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4d24e237/dedeb5add0f24f24afd3e1a3674af18c/FLAG0d4ab9af9 [2023-04-02 23:53:28,492 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4d24e237/dedeb5add0f24f24afd3e1a3674af18c [2023-04-02 23:53:28,494 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 23:53:28,495 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 23:53:28,496 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 23:53:28,496 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 23:53:28,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 23:53:28,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 11:53:28" (1/1) ... [2023-04-02 23:53:28,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a6564b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:53:28, skipping insertion in model container [2023-04-02 23:53:28,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 11:53:28" (1/1) ... [2023-04-02 23:53:28,503 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 23:53:28,541 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 23:53:28,779 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_spec3_product28.cil.c[73221,73234] [2023-04-02 23:53:28,783 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 23:53:28,791 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 23:53:28,855 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_spec3_product28.cil.c[73221,73234] [2023-04-02 23:53:28,855 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 23:53:28,873 INFO L208 MainTranslator]: Completed translation [2023-04-02 23:53:28,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:53:28 WrapperNode [2023-04-02 23:53:28,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 23:53:28,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 23:53:28,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 23:53:28,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 23:53:28,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:53:28" (1/1) ... [2023-04-02 23:53:28,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:53:28" (1/1) ... [2023-04-02 23:53:28,902 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:53:28" (1/1) ... [2023-04-02 23:53:28,902 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:53:28" (1/1) ... [2023-04-02 23:53:28,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:53:28" (1/1) ... [2023-04-02 23:53:28,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:53:28" (1/1) ... [2023-04-02 23:53:28,948 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:53:28" (1/1) ... [2023-04-02 23:53:28,952 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:53:28" (1/1) ... [2023-04-02 23:53:28,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 23:53:28,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 23:53:28,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 23:53:28,960 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 23:53:28,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:53:28" (1/1) ... [2023-04-02 23:53:28,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 23:53:28,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:53:29,000 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 23:53:29,001 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 23:53:29,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 23:53:29,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 23:53:29,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-02 23:53:29,040 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 23:53:29,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2023-04-02 23:53:29,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2023-04-02 23:53:29,042 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2023-04-02 23:53:29,042 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2023-04-02 23:53:29,042 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-04-02 23:53:29,042 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2023-04-02 23:53:29,042 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-04-02 23:53:29,042 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2023-04-02 23:53:29,042 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2023-04-02 23:53:29,042 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-04-02 23:53:29,042 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-04-02 23:53:29,042 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2023-04-02 23:53:29,043 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-04-02 23:53:29,043 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-04-02 23:53:29,043 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-04-02 23:53:29,043 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-04-02 23:53:29,043 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2023-04-02 23:53:29,043 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2023-04-02 23:53:29,043 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2023-04-02 23:53:29,043 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2023-04-02 23:53:29,043 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-04-02 23:53:29,043 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2023-04-02 23:53:29,043 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-04-02 23:53:29,044 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2023-04-02 23:53:29,044 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2023-04-02 23:53:29,044 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-04-02 23:53:29,044 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2023-04-02 23:53:29,044 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2023-04-02 23:53:29,044 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-02 23:53:29,044 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2023-04-02 23:53:29,044 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2023-04-02 23:53:29,044 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2023-04-02 23:53:29,044 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2023-04-02 23:53:29,044 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2023-04-02 23:53:29,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-02 23:53:29,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-02 23:53:29,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-02 23:53:29,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-02 23:53:29,045 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-02 23:53:29,045 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-02 23:53:29,045 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-02 23:53:29,046 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-04-02 23:53:29,046 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-04-02 23:53:29,046 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-04-02 23:53:29,046 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2023-04-02 23:53:29,046 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-04-02 23:53:29,046 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2023-04-02 23:53:29,046 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-04-02 23:53:29,068 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2023-04-02 23:53:29,068 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2023-04-02 23:53:29,069 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-04-02 23:53:29,069 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2023-04-02 23:53:29,069 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-02 23:53:29,069 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2023-04-02 23:53:29,069 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2023-04-02 23:53:29,069 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2023-04-02 23:53:29,069 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-02 23:53:29,069 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2023-04-02 23:53:29,069 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-02 23:53:29,069 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-02 23:53:29,069 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 23:53:29,069 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2023-04-02 23:53:29,069 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-04-02 23:53:29,070 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-04-02 23:53:29,076 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2023-04-02 23:53:29,076 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-04-02 23:53:29,076 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-04-02 23:53:29,076 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-04-02 23:53:29,076 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-04-02 23:53:29,076 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2023-04-02 23:53:29,076 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2023-04-02 23:53:29,077 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-02 23:53:29,077 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-02 23:53:29,077 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-02 23:53:29,077 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-02 23:53:29,077 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-02 23:53:29,077 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 23:53:29,077 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 23:53:29,077 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 23:53:29,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 23:53:29,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 23:53:29,078 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-02 23:53:29,078 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-04-02 23:53:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-04-02 23:53:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-04-02 23:53:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2023-04-02 23:53:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2023-04-02 23:53:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-02 23:53:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-04-02 23:53:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-04-02 23:53:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-04-02 23:53:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-04-02 23:53:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-04-02 23:53:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-04-02 23:53:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-04-02 23:53:29,080 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-04-02 23:53:29,080 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2023-04-02 23:53:29,080 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-02 23:53:29,080 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-04-02 23:53:29,080 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2023-04-02 23:53:29,080 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2023-04-02 23:53:29,080 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2023-04-02 23:53:29,080 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2023-04-02 23:53:29,080 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2023-04-02 23:53:29,080 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-04-02 23:53:29,080 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2023-04-02 23:53:29,080 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2023-04-02 23:53:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2023-04-02 23:53:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2023-04-02 23:53:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2023-04-02 23:53:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2023-04-02 23:53:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-04-02 23:53:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-04-02 23:53:29,081 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2023-04-02 23:53:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2023-04-02 23:53:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2023-04-02 23:53:29,082 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-04-02 23:53:29,083 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-04-02 23:53:29,085 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2023-04-02 23:53:29,085 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2023-04-02 23:53:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-04-02 23:53:29,089 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2023-04-02 23:53:29,090 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2023-04-02 23:53:29,090 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2023-04-02 23:53:29,090 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2023-04-02 23:53:29,090 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-02 23:53:29,090 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-02 23:53:29,090 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-02 23:53:29,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-02 23:53:29,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-02 23:53:29,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 23:53:29,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-02 23:53:29,091 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-02 23:53:29,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 23:53:29,091 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-02 23:53:29,091 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-02 23:53:29,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 23:53:29,091 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-02 23:53:29,091 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-02 23:53:29,092 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-02 23:53:29,092 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-04-02 23:53:29,092 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2023-04-02 23:53:29,092 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-02 23:53:29,092 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-02 23:53:29,092 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-04-02 23:53:29,092 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-02 23:53:29,092 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2023-04-02 23:53:29,092 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-04-02 23:53:29,092 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2023-04-02 23:53:29,092 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-04-02 23:53:29,092 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2023-04-02 23:53:29,092 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2023-04-02 23:53:29,092 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-04-02 23:53:29,093 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2023-04-02 23:53:29,093 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2023-04-02 23:53:29,093 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2023-04-02 23:53:29,093 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-02 23:53:29,093 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2023-04-02 23:53:29,093 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-02 23:53:29,093 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-02 23:53:29,093 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-02 23:53:29,093 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-02 23:53:29,093 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-02 23:53:29,093 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 23:53:29,094 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2023-04-02 23:53:29,094 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2023-04-02 23:53:29,094 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2023-04-02 23:53:29,094 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-02 23:53:29,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 23:53:29,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 23:53:29,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 23:53:29,274 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 23:53:29,276 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 23:53:30,142 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 23:53:30,690 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 23:53:30,690 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-04-02 23:53:30,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 11:53:30 BoogieIcfgContainer [2023-04-02 23:53:30,694 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 23:53:30,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 23:53:30,697 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 23:53:30,699 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 23:53:30,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 11:53:28" (1/3) ... [2023-04-02 23:53:30,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a44dff8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 11:53:30, skipping insertion in model container [2023-04-02 23:53:30,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:53:28" (2/3) ... [2023-04-02 23:53:30,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a44dff8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 11:53:30, skipping insertion in model container [2023-04-02 23:53:30,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 11:53:30" (3/3) ... [2023-04-02 23:53:30,700 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product28.cil.c [2023-04-02 23:53:30,712 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 23:53:30,712 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 23:53:30,760 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 23:53:30,765 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;@66a326cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 23:53:30,766 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 23:53:30,770 INFO L276 IsEmpty]: Start isEmpty. Operand has 617 states, 359 states have (on average 1.4707520891364902) internal successors, (528), 384 states have internal predecessors, (528), 189 states have call successors, (189), 55 states have call predecessors, (189), 55 states have return successors, (189), 182 states have call predecessors, (189), 189 states have call successors, (189) [2023-04-02 23:53:30,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-04-02 23:53:30,779 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:53:30,780 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-02 23:53:30,781 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:53:30,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:53:30,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1550574356, now seen corresponding path program 1 times [2023-04-02 23:53:30,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:53:30,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58383512] [2023-04-02 23:53:30,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:53:30,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:53:30,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:53:31,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 23:53:31,605 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:53:31,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58383512] [2023-04-02 23:53:31,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58383512] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:53:31,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869434182] [2023-04-02 23:53:31,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:53:31,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:53:31,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:53:31,647 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 23:53:31,648 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 23:53:32,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:53:32,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 2600 conjuncts, 2 conjunts are in the unsatisfiable core [2023-04-02 23:53:32,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:53:32,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 23:53:32,183 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 23:53:32,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869434182] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:53:32,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 23:53:32,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2023-04-02 23:53:32,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668342047] [2023-04-02 23:53:32,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:53:32,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 23:53:32,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:53:32,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 23:53:32,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-04-02 23:53:32,207 INFO L87 Difference]: Start difference. First operand has 617 states, 359 states have (on average 1.4707520891364902) internal successors, (528), 384 states have internal predecessors, (528), 189 states have call successors, (189), 55 states have call predecessors, (189), 55 states have return successors, (189), 182 states have call predecessors, (189), 189 states have call successors, (189) Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-04-02 23:53:32,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:53:32,362 INFO L93 Difference]: Finished difference Result 1355 states and 2052 transitions. [2023-04-02 23:53:32,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 23:53:32,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 80 [2023-04-02 23:53:32,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:53:32,376 INFO L225 Difference]: With dead ends: 1355 [2023-04-02 23:53:32,376 INFO L226 Difference]: Without dead ends: 876 [2023-04-02 23:53:32,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-04-02 23:53:32,382 INFO L413 NwaCegarLoop]: 1186 mSDtfsCounter, 682 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:53:32,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 1760 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:53:32,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2023-04-02 23:53:32,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 863. [2023-04-02 23:53:32,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 863 states, 546 states have (on average 1.5128205128205128) internal successors, (826), 581 states have internal predecessors, (826), 231 states have call successors, (231), 87 states have call predecessors, (231), 85 states have return successors, (233), 220 states have call predecessors, (233), 225 states have call successors, (233) [2023-04-02 23:53:32,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1290 transitions. [2023-04-02 23:53:32,447 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1290 transitions. Word has length 80 [2023-04-02 23:53:32,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:53:32,448 INFO L495 AbstractCegarLoop]: Abstraction has 863 states and 1290 transitions. [2023-04-02 23:53:32,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-04-02 23:53:32,448 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1290 transitions. [2023-04-02 23:53:32,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-02 23:53:32,450 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:53:32,450 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-02 23:53:32,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 23:53:32,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-04-02 23:53:32,659 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:53:32,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:53:32,660 INFO L85 PathProgramCache]: Analyzing trace with hash 227601567, now seen corresponding path program 1 times [2023-04-02 23:53:32,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:53:32,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856781896] [2023-04-02 23:53:32,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:53:32,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:53:32,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:53:33,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-02 23:53:33,033 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:53:33,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856781896] [2023-04-02 23:53:33,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856781896] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:53:33,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:53:33,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-02 23:53:33,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735198661] [2023-04-02 23:53:33,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:53:33,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 23:53:33,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:53:33,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 23:53:33,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 23:53:33,038 INFO L87 Difference]: Start difference. First operand 863 states and 1290 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-04-02 23:53:33,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:53:33,236 INFO L93 Difference]: Finished difference Result 2513 states and 3820 transitions. [2023-04-02 23:53:33,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 23:53:33,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 81 [2023-04-02 23:53:33,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:53:33,248 INFO L225 Difference]: With dead ends: 2513 [2023-04-02 23:53:33,248 INFO L226 Difference]: Without dead ends: 1681 [2023-04-02 23:53:33,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 23:53:33,252 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 668 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 668 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:53:33,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [668 Valid, 1350 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:53:33,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1681 states. [2023-04-02 23:53:33,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1681 to 1576. [2023-04-02 23:53:33,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1576 states, 1038 states have (on average 1.5375722543352601) internal successors, (1596), 1092 states have internal predecessors, (1596), 395 states have call successors, (395), 142 states have call predecessors, (395), 142 states have return successors, (419), 367 states have call predecessors, (419), 388 states have call successors, (419) [2023-04-02 23:53:33,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 2410 transitions. [2023-04-02 23:53:33,322 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 2410 transitions. Word has length 81 [2023-04-02 23:53:33,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:53:33,324 INFO L495 AbstractCegarLoop]: Abstraction has 1576 states and 2410 transitions. [2023-04-02 23:53:33,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-04-02 23:53:33,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 2410 transitions. [2023-04-02 23:53:33,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-04-02 23:53:33,333 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:53:33,333 INFO L195 NwaCegarLoop]: trace histogram [3, 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 23:53:33,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 23:53:33,334 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:53:33,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:53:33,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1786397116, now seen corresponding path program 1 times [2023-04-02 23:53:33,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:53:33,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494602394] [2023-04-02 23:53:33,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:53:33,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:53:33,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:53:33,765 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 23:53:33,766 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:53:33,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494602394] [2023-04-02 23:53:33,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494602394] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:53:33,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:53:33,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 23:53:33,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904284825] [2023-04-02 23:53:33,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:53:33,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 23:53:33,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:53:33,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 23:53:33,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 23:53:33,771 INFO L87 Difference]: Start difference. First operand 1576 states and 2410 transitions. Second operand has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) [2023-04-02 23:53:35,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:53:35,257 INFO L93 Difference]: Finished difference Result 4706 states and 7368 transitions. [2023-04-02 23:53:35,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 23:53:35,258 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) Word has length 129 [2023-04-02 23:53:35,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:53:35,271 INFO L225 Difference]: With dead ends: 4706 [2023-04-02 23:53:35,271 INFO L226 Difference]: Without dead ends: 3161 [2023-04-02 23:53:35,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-04-02 23:53:35,277 INFO L413 NwaCegarLoop]: 1340 mSDtfsCounter, 1325 mSDsluCounter, 3894 mSDsCounter, 0 mSdLazyCounter, 2366 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1347 SdHoareTripleChecker+Valid, 5234 SdHoareTripleChecker+Invalid, 2408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 2366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-02 23:53:35,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1347 Valid, 5234 Invalid, 2408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 2366 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-02 23:53:35,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3161 states. [2023-04-02 23:53:35,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3161 to 3092. [2023-04-02 23:53:35,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 2038 states have (on average 1.5299313052011776) internal successors, (3118), 2161 states have internal predecessors, (3118), 774 states have call successors, (774), 274 states have call predecessors, (774), 279 states have return successors, (897), 710 states have call predecessors, (897), 765 states have call successors, (897) [2023-04-02 23:53:35,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 4789 transitions. [2023-04-02 23:53:35,373 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 4789 transitions. Word has length 129 [2023-04-02 23:53:35,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:53:35,374 INFO L495 AbstractCegarLoop]: Abstraction has 3092 states and 4789 transitions. [2023-04-02 23:53:35,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) [2023-04-02 23:53:35,374 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 4789 transitions. [2023-04-02 23:53:35,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-04-02 23:53:35,377 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:53:35,377 INFO L195 NwaCegarLoop]: trace histogram [3, 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 23:53:35,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 23:53:35,377 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:53:35,377 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:53:35,377 INFO L85 PathProgramCache]: Analyzing trace with hash -689390930, now seen corresponding path program 1 times [2023-04-02 23:53:35,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:53:35,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492673360] [2023-04-02 23:53:35,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:53:35,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:53:35,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:53:35,741 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-04-02 23:53:35,741 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:53:35,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492673360] [2023-04-02 23:53:35,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492673360] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:53:35,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705546542] [2023-04-02 23:53:35,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:53:35,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:53:35,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:53:35,742 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 23:53:35,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 23:53:36,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:53:36,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 2950 conjuncts, 2 conjunts are in the unsatisfiable core [2023-04-02 23:53:36,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:53:36,253 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-02 23:53:36,253 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 23:53:36,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705546542] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:53:36,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 23:53:36,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2023-04-02 23:53:36,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787413822] [2023-04-02 23:53:36,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:53:36,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 23:53:36,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:53:36,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 23:53:36,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-04-02 23:53:36,254 INFO L87 Difference]: Start difference. First operand 3092 states and 4789 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-04-02 23:53:36,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:53:36,495 INFO L93 Difference]: Finished difference Result 7622 states and 11992 transitions. [2023-04-02 23:53:36,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 23:53:36,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 129 [2023-04-02 23:53:36,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:53:36,519 INFO L225 Difference]: With dead ends: 7622 [2023-04-02 23:53:36,519 INFO L226 Difference]: Without dead ends: 4561 [2023-04-02 23:53:36,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-04-02 23:53:36,528 INFO L413 NwaCegarLoop]: 1163 mSDtfsCounter, 627 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 1723 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:53:36,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 1723 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:53:36,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4561 states. [2023-04-02 23:53:36,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4561 to 4448. [2023-04-02 23:53:36,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4448 states, 2944 states have (on average 1.531929347826087) internal successors, (4510), 3128 states have internal predecessors, (4510), 1102 states have call successors, (1102), 389 states have call predecessors, (1102), 401 states have return successors, (1290), 1011 states have call predecessors, (1290), 1093 states have call successors, (1290) [2023-04-02 23:53:36,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4448 states to 4448 states and 6902 transitions. [2023-04-02 23:53:36,682 INFO L78 Accepts]: Start accepts. Automaton has 4448 states and 6902 transitions. Word has length 129 [2023-04-02 23:53:36,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:53:36,682 INFO L495 AbstractCegarLoop]: Abstraction has 4448 states and 6902 transitions. [2023-04-02 23:53:36,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-04-02 23:53:36,682 INFO L276 IsEmpty]: Start isEmpty. Operand 4448 states and 6902 transitions. [2023-04-02 23:53:36,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-04-02 23:53:36,686 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:53:36,686 INFO L195 NwaCegarLoop]: trace histogram [3, 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 23:53:36,695 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-02 23:53:36,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-04-02 23:53:36,895 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:53:36,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:53:36,896 INFO L85 PathProgramCache]: Analyzing trace with hash 306057652, now seen corresponding path program 1 times [2023-04-02 23:53:36,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:53:36,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941392329] [2023-04-02 23:53:36,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:53:36,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:53:36,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:53:37,277 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-04-02 23:53:37,277 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:53:37,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941392329] [2023-04-02 23:53:37,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941392329] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:53:37,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663472593] [2023-04-02 23:53:37,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:53:37,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:53:37,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:53:37,278 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 23:53:37,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-02 23:53:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:53:37,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 2962 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-02 23:53:37,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:53:37,817 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-02 23:53:37,817 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 23:53:37,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663472593] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:53:37,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 23:53:37,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2023-04-02 23:53:37,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591438501] [2023-04-02 23:53:37,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:53:37,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 23:53:37,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:53:37,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 23:53:37,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-04-02 23:53:37,819 INFO L87 Difference]: Start difference. First operand 4448 states and 6902 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 4 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) [2023-04-02 23:53:38,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:53:38,649 INFO L93 Difference]: Finished difference Result 11787 states and 18629 transitions. [2023-04-02 23:53:38,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 23:53:38,650 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 4 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) Word has length 129 [2023-04-02 23:53:38,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:53:38,683 INFO L225 Difference]: With dead ends: 11787 [2023-04-02 23:53:38,683 INFO L226 Difference]: Without dead ends: 7370 [2023-04-02 23:53:38,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-04-02 23:53:38,702 INFO L413 NwaCegarLoop]: 700 mSDtfsCounter, 562 mSDsluCounter, 1409 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 2109 SdHoareTripleChecker+Invalid, 1092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 23:53:38,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [570 Valid, 2109 Invalid, 1092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1057 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 23:53:38,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7370 states. [2023-04-02 23:53:38,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7370 to 7326. [2023-04-02 23:53:38,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7326 states, 4836 states have (on average 1.4760132340777503) internal successors, (7138), 5142 states have internal predecessors, (7138), 1810 states have call successors, (1810), 674 states have call predecessors, (1810), 679 states have return successors, (2191), 1640 states have call predecessors, (2191), 1797 states have call successors, (2191) [2023-04-02 23:53:39,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7326 states to 7326 states and 11139 transitions. [2023-04-02 23:53:39,008 INFO L78 Accepts]: Start accepts. Automaton has 7326 states and 11139 transitions. Word has length 129 [2023-04-02 23:53:39,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:53:39,009 INFO L495 AbstractCegarLoop]: Abstraction has 7326 states and 11139 transitions. [2023-04-02 23:53:39,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 4 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) [2023-04-02 23:53:39,009 INFO L276 IsEmpty]: Start isEmpty. Operand 7326 states and 11139 transitions. [2023-04-02 23:53:39,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-04-02 23:53:39,014 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:53:39,014 INFO L195 NwaCegarLoop]: trace histogram [3, 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 23:53:39,022 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-04-02 23:53:39,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:53:39,222 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:53:39,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:53:39,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1552604025, now seen corresponding path program 1 times [2023-04-02 23:53:39,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:53:39,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198704744] [2023-04-02 23:53:39,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:53:39,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:53:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:53:39,657 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-02 23:53:39,657 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:53:39,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198704744] [2023-04-02 23:53:39,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198704744] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:53:39,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:53:39,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 23:53:39,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963047547] [2023-04-02 23:53:39,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:53:39,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 23:53:39,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:53:39,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 23:53:39,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-02 23:53:39,658 INFO L87 Difference]: Start difference. First operand 7326 states and 11139 transitions. Second operand has 10 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 3 states have call successors, (34), 3 states have call predecessors, (34), 5 states have return successors, (27), 5 states have call predecessors, (27), 3 states have call successors, (27) [2023-04-02 23:53:41,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:53:41,414 INFO L93 Difference]: Finished difference Result 23901 states and 37483 transitions. [2023-04-02 23:53:41,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 23:53:41,415 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 3 states have call successors, (34), 3 states have call predecessors, (34), 5 states have return successors, (27), 5 states have call predecessors, (27), 3 states have call successors, (27) Word has length 135 [2023-04-02 23:53:41,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:53:41,490 INFO L225 Difference]: With dead ends: 23901 [2023-04-02 23:53:41,490 INFO L226 Difference]: Without dead ends: 16606 [2023-04-02 23:53:41,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2023-04-02 23:53:41,523 INFO L413 NwaCegarLoop]: 1343 mSDtfsCounter, 1329 mSDsluCounter, 8131 mSDsCounter, 0 mSdLazyCounter, 2719 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1352 SdHoareTripleChecker+Valid, 9474 SdHoareTripleChecker+Invalid, 2771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 2719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 23:53:41,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1352 Valid, 9474 Invalid, 2771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 2719 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 23:53:41,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16606 states. [2023-04-02 23:53:42,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16606 to 16274. [2023-04-02 23:53:42,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16274 states, 10903 states have (on average 1.47785013299092) internal successors, (16113), 11579 states have internal predecessors, (16113), 3894 states have call successors, (3894), 1449 states have call predecessors, (3894), 1476 states have return successors, (5236), 3488 states have call predecessors, (5236), 3873 states have call successors, (5236) [2023-04-02 23:53:42,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16274 states to 16274 states and 25243 transitions. [2023-04-02 23:53:42,164 INFO L78 Accepts]: Start accepts. Automaton has 16274 states and 25243 transitions. Word has length 135 [2023-04-02 23:53:42,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:53:42,164 INFO L495 AbstractCegarLoop]: Abstraction has 16274 states and 25243 transitions. [2023-04-02 23:53:42,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 3 states have call successors, (34), 3 states have call predecessors, (34), 5 states have return successors, (27), 5 states have call predecessors, (27), 3 states have call successors, (27) [2023-04-02 23:53:42,165 INFO L276 IsEmpty]: Start isEmpty. Operand 16274 states and 25243 transitions. [2023-04-02 23:53:42,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-04-02 23:53:42,167 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:53:42,168 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-04-02 23:53:42,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 23:53:42,168 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:53:42,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:53:42,168 INFO L85 PathProgramCache]: Analyzing trace with hash -2052624660, now seen corresponding path program 1 times [2023-04-02 23:53:42,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:53:42,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547109416] [2023-04-02 23:53:42,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:53:42,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:53:42,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:53:42,540 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-04-02 23:53:42,540 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:53:42,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547109416] [2023-04-02 23:53:42,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547109416] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:53:42,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782722812] [2023-04-02 23:53:42,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:53:42,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:53:42,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:53:42,542 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 23:53:42,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-02 23:53:42,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:53:42,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 2992 conjuncts, 25 conjunts are in the unsatisfiable core [2023-04-02 23:53:42,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:53:43,262 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-04-02 23:53:43,262 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:53:43,559 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-04-02 23:53:43,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782722812] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 23:53:43,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2140512017] [2023-04-02 23:53:43,593 INFO L159 IcfgInterpreter]: Started Sifa with 126 locations of interest [2023-04-02 23:53:43,593 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:53:43,595 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:53:43,598 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:53:43,599 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:53:45,653 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 178 for LOIs [2023-04-02 23:53:46,186 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 230 for LOIs [2023-04-02 23:53:48,569 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 230 for LOIs [2023-04-02 23:53:48,928 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 230 for LOIs [2023-04-02 23:53:53,128 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 123071 conjuctions. This might take some time...