/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/product-lines/elevator_spec1_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 23:45:54,736 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 23:45:54,737 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 23:45:54,770 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 23:45:54,771 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 23:45:54,773 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 23:45:54,775 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 23:45:54,776 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 23:45:54,777 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 23:45:54,781 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 23:45:54,783 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 23:45:54,783 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 23:45:54,783 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 23:45:54,786 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 23:45:54,787 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 23:45:54,788 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 23:45:54,788 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 23:45:54,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 23:45:54,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 23:45:54,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 23:45:54,796 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 23:45:54,797 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 23:45:54,798 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 23:45:54,798 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 23:45:54,803 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 23:45:54,803 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 23:45:54,803 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 23:45:54,804 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 23:45:54,804 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 23:45:54,805 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 23:45:54,805 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 23:45:54,805 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 23:45:54,805 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 23:45:54,806 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 23:45:54,806 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 23:45:54,807 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 23:45:54,807 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 23:45:54,807 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 23:45:54,807 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 23:45:54,808 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 23:45:54,808 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 23:45:54,810 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 23:45:54,833 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 23:45:54,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 23:45:54,833 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 23:45:54,834 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 23:45:54,834 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 23:45:54,834 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 23:45:54,834 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 23:45:54,834 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 23:45:54,835 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 23:45:54,835 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 23:45:54,835 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 23:45:54,835 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 23:45:54,835 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 23:45:54,835 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 23:45:54,836 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 23:45:54,836 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 23:45:54,836 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 23:45:54,836 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 23:45:54,836 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 23:45:54,836 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 23:45:54,836 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 23:45:54,836 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 23:45:54,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 23:45:54,837 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 23:45:54,837 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 23:45:54,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 23:45:54,837 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 23:45:54,837 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 23:45:54,837 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 23:45:54,837 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 23:45:54,837 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 23:45:54,837 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 23:45:54,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 23:45:54,838 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 23:45:54,838 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 23:45:54,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 23:45:54,838 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 23:45:54,838 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 23:45:54,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 23:45:54,838 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 23:45:54,838 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 23:45:54,838 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 23:45:55,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 23:45:55,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 23:45:55,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 23:45:55,135 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 23:45:55,135 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 23:45:55,136 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product32.cil.c [2023-04-02 23:45:56,158 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 23:45:56,400 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 23:45:56,401 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product32.cil.c [2023-04-02 23:45:56,417 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0de81a20f/515c0e80295141b991a682ed23045dc9/FLAG958053ddf [2023-04-02 23:45:56,427 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0de81a20f/515c0e80295141b991a682ed23045dc9 [2023-04-02 23:45:56,429 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 23:45:56,430 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 23:45:56,430 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 23:45:56,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 23:45:56,433 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 23:45:56,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 11:45:56" (1/1) ... [2023-04-02 23:45:56,434 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3722ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:45:56, skipping insertion in model container [2023-04-02 23:45:56,434 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 11:45:56" (1/1) ... [2023-04-02 23:45:56,439 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 23:45:56,479 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 23:45:56,630 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product32.cil.c[4316,4329] [2023-04-02 23:45:56,862 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 23:45:56,872 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 23:45:56,886 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product32.cil.c[4316,4329] [2023-04-02 23:45:57,035 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 23:45:57,061 INFO L208 MainTranslator]: Completed translation [2023-04-02 23:45:57,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:45:57 WrapperNode [2023-04-02 23:45:57,062 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 23:45:57,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 23:45:57,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 23:45:57,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 23:45:57,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:45:57" (1/1) ... [2023-04-02 23:45:57,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:45:57" (1/1) ... [2023-04-02 23:45:57,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:45:57" (1/1) ... [2023-04-02 23:45:57,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:45:57" (1/1) ... [2023-04-02 23:45:57,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:45:57" (1/1) ... [2023-04-02 23:45:57,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:45:57" (1/1) ... [2023-04-02 23:45:57,171 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:45:57" (1/1) ... [2023-04-02 23:45:57,183 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:45:57" (1/1) ... [2023-04-02 23:45:57,192 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 23:45:57,193 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 23:45:57,193 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 23:45:57,193 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 23:45:57,194 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:45:57" (1/1) ... [2023-04-02 23:45:57,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 23:45:57,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:45:57,258 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 23:45:57,293 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 23:45:57,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 23:45:57,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 23:45:57,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-02 23:45:57,302 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 23:45:57,303 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-04-02 23:45:57,303 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-04-02 23:45:57,303 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-04-02 23:45:57,303 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-02 23:45:57,303 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-02 23:45:57,303 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2023-04-02 23:45:57,304 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2023-04-02 23:45:57,304 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-04-02 23:45:57,304 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2023-04-02 23:45:57,304 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-04-02 23:45:57,304 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2023-04-02 23:45:57,304 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2023-04-02 23:45:57,304 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-04-02 23:45:57,304 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-04-02 23:45:57,304 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2023-04-02 23:45:57,304 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-04-02 23:45:57,304 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-04-02 23:45:57,304 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-04-02 23:45:57,304 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-04-02 23:45:57,305 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2023-04-02 23:45:57,305 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2023-04-02 23:45:57,305 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2023-04-02 23:45:57,305 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2023-04-02 23:45:57,305 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2023-04-02 23:45:57,305 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-04-02 23:45:57,305 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2023-04-02 23:45:57,305 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-04-02 23:45:57,305 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2023-04-02 23:45:57,305 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2023-04-02 23:45:57,305 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2023-04-02 23:45:57,305 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-04-02 23:45:57,305 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2023-04-02 23:45:57,305 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2023-04-02 23:45:57,305 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-02 23:45:57,305 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2023-04-02 23:45:57,306 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2023-04-02 23:45:57,306 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2023-04-02 23:45:57,306 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2023-04-02 23:45:57,306 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2023-04-02 23:45:57,306 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2023-04-02 23:45:57,306 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-04-02 23:45:57,307 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2023-04-02 23:45:57,307 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-04-02 23:45:57,307 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2023-04-02 23:45:57,307 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2023-04-02 23:45:57,307 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-04-02 23:45:57,307 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2023-04-02 23:45:57,307 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-02 23:45:57,307 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2023-04-02 23:45:57,307 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2023-04-02 23:45:57,308 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2023-04-02 23:45:57,308 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-02 23:45:57,308 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2023-04-02 23:45:57,308 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-02 23:45:57,308 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-02 23:45:57,309 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 23:45:57,309 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-02 23:45:57,309 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-02 23:45:57,309 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-02 23:45:57,309 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-02 23:45:57,309 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2023-04-02 23:45:57,309 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2023-04-02 23:45:57,310 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2023-04-02 23:45:57,310 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2023-04-02 23:45:57,310 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-02 23:45:57,310 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-02 23:45:57,310 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-02 23:45:57,310 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-02 23:45:57,310 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-02 23:45:57,310 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-02 23:45:57,310 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2023-04-02 23:45:57,310 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-04-02 23:45:57,310 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-04-02 23:45:57,310 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2023-04-02 23:45:57,310 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-04-02 23:45:57,310 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-04-02 23:45:57,310 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-04-02 23:45:57,310 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-04-02 23:45:57,311 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2023-04-02 23:45:57,311 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2023-04-02 23:45:57,311 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 23:45:57,311 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 23:45:57,311 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 23:45:57,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 23:45:57,311 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 23:45:57,311 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-04-02 23:45:57,311 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-04-02 23:45:57,311 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-04-02 23:45:57,312 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-04-02 23:45:57,312 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-04-02 23:45:57,312 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-02 23:45:57,312 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-02 23:45:57,312 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-02 23:45:57,312 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-02 23:45:57,312 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-04-02 23:45:57,312 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-04-02 23:45:57,312 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-04-02 23:45:57,312 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-04-02 23:45:57,312 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-04-02 23:45:57,312 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-04-02 23:45:57,312 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2023-04-02 23:45:57,313 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-02 23:45:57,313 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-04-02 23:45:57,313 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2023-04-02 23:45:57,313 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2023-04-02 23:45:57,313 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2023-04-02 23:45:57,313 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-04-02 23:45:57,313 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2023-04-02 23:45:57,313 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2023-04-02 23:45:57,313 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-04-02 23:45:57,313 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-04-02 23:45:57,314 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2023-04-02 23:45:57,314 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2023-04-02 23:45:57,314 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2023-04-02 23:45:57,314 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2023-04-02 23:45:57,314 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2023-04-02 23:45:57,315 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2023-04-02 23:45:57,315 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-04-02 23:45:57,317 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-04-02 23:45:57,317 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2023-04-02 23:45:57,321 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-04-02 23:45:57,321 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2023-04-02 23:45:57,321 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2023-04-02 23:45:57,321 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2023-04-02 23:45:57,321 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-04-02 23:45:57,321 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-04-02 23:45:57,322 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2023-04-02 23:45:57,322 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2023-04-02 23:45:57,325 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2023-04-02 23:45:57,325 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-04-02 23:45:57,325 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2023-04-02 23:45:57,325 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2023-04-02 23:45:57,325 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2023-04-02 23:45:57,325 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2023-04-02 23:45:57,325 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2023-04-02 23:45:57,325 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-02 23:45:57,325 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2023-04-02 23:45:57,325 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-04-02 23:45:57,325 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-04-02 23:45:57,325 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2023-04-02 23:45:57,325 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2023-04-02 23:45:57,325 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2023-04-02 23:45:57,325 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2023-04-02 23:45:57,325 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2023-04-02 23:45:57,325 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2023-04-02 23:45:57,325 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2023-04-02 23:45:57,326 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-02 23:45:57,326 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2023-04-02 23:45:57,326 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-02 23:45:57,326 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2023-04-02 23:45:57,326 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2023-04-02 23:45:57,326 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-02 23:45:57,326 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-02 23:45:57,326 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-02 23:45:57,326 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-02 23:45:57,326 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 23:45:57,326 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-02 23:45:57,326 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2023-04-02 23:45:57,326 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-02 23:45:57,326 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-02 23:45:57,326 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-02 23:45:57,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-02 23:45:57,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-02 23:45:57,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 23:45:57,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-02 23:45:57,326 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-02 23:45:57,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 23:45:57,327 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-02 23:45:57,327 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-02 23:45:57,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 23:45:57,327 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-02 23:45:57,327 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-02 23:45:57,327 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-02 23:45:57,327 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2023-04-02 23:45:57,327 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2023-04-02 23:45:57,327 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2023-04-02 23:45:57,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 23:45:57,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 23:45:57,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 23:45:57,571 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 23:45:57,573 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 23:45:58,540 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 23:45:59,191 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 23:45:59,192 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-04-02 23:45:59,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 11:45:59 BoogieIcfgContainer [2023-04-02 23:45:59,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 23:45:59,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 23:45:59,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 23:45:59,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 23:45:59,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 11:45:56" (1/3) ... [2023-04-02 23:45:59,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e50af10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 11:45:59, skipping insertion in model container [2023-04-02 23:45:59,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:45:57" (2/3) ... [2023-04-02 23:45:59,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e50af10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 11:45:59, skipping insertion in model container [2023-04-02 23:45:59,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 11:45:59" (3/3) ... [2023-04-02 23:45:59,204 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product32.cil.c [2023-04-02 23:45:59,217 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 23:45:59,217 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 23:45:59,275 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 23:45:59,280 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;@1f78cc96, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 23:45:59,281 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 23:45:59,288 INFO L276 IsEmpty]: Start isEmpty. Operand has 617 states, 359 states have (on average 1.467966573816156) internal successors, (527), 388 states have internal predecessors, (527), 188 states have call successors, (188), 57 states have call predecessors, (188), 57 states have return successors, (188), 178 states have call predecessors, (188), 188 states have call successors, (188) [2023-04-02 23:45:59,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-04-02 23:45:59,305 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:45:59,306 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:45:59,307 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:45:59,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:45:59,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1818874079, now seen corresponding path program 1 times [2023-04-02 23:45:59,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:45:59,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221408875] [2023-04-02 23:45:59,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:45:59,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:45:59,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:46:00,387 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-02 23:46:00,387 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:46:00,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221408875] [2023-04-02 23:46:00,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221408875] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:46:00,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:46:00,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 23:46:00,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495768464] [2023-04-02 23:46:00,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:46:00,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 23:46:00,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:46:00,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 23:46:00,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 23:46:00,428 INFO L87 Difference]: Start difference. First operand has 617 states, 359 states have (on average 1.467966573816156) internal successors, (527), 388 states have internal predecessors, (527), 188 states have call successors, (188), 57 states have call predecessors, (188), 57 states have return successors, (188), 178 states have call predecessors, (188), 188 states have call successors, (188) Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 6 states have call successors, (24), 5 states have call predecessors, (24), 3 states have return successors, (20), 6 states have call predecessors, (20), 5 states have call successors, (20) [2023-04-02 23:46:02,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:46:02,424 INFO L93 Difference]: Finished difference Result 1481 states and 2263 transitions. [2023-04-02 23:46:02,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 23:46:02,426 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 6 states have call successors, (24), 5 states have call predecessors, (24), 3 states have return successors, (20), 6 states have call predecessors, (20), 5 states have call successors, (20) Word has length 97 [2023-04-02 23:46:02,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:46:02,442 INFO L225 Difference]: With dead ends: 1481 [2023-04-02 23:46:02,442 INFO L226 Difference]: Without dead ends: 1023 [2023-04-02 23:46:02,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-04-02 23:46:02,449 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 1410 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 1974 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 2563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 1974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-04-02 23:46:02,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 576 Invalid, 2563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 1974 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-04-02 23:46:02,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2023-04-02 23:46:02,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 932. [2023-04-02 23:46:02,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 611 states have (on average 1.5368248772504092) internal successors, (939), 641 states have internal predecessors, (939), 238 states have call successors, (238), 83 states have call predecessors, (238), 82 states have return successors, (240), 217 states have call predecessors, (240), 230 states have call successors, (240) [2023-04-02 23:46:02,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1417 transitions. [2023-04-02 23:46:02,549 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1417 transitions. Word has length 97 [2023-04-02 23:46:02,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:46:02,550 INFO L495 AbstractCegarLoop]: Abstraction has 932 states and 1417 transitions. [2023-04-02 23:46:02,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 6 states have call successors, (24), 5 states have call predecessors, (24), 3 states have return successors, (20), 6 states have call predecessors, (20), 5 states have call successors, (20) [2023-04-02 23:46:02,550 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1417 transitions. [2023-04-02 23:46:02,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-04-02 23:46:02,555 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:46:02,555 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:46:02,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 23:46:02,556 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:46:02,556 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:46:02,556 INFO L85 PathProgramCache]: Analyzing trace with hash 535999995, now seen corresponding path program 1 times [2023-04-02 23:46:02,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:46:02,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195303755] [2023-04-02 23:46:02,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:46:02,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:46:02,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:46:03,118 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 23:46:03,119 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:46:03,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195303755] [2023-04-02 23:46:03,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195303755] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:46:03,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:46:03,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 23:46:03,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937595141] [2023-04-02 23:46:03,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:46:03,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 23:46:03,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:46:03,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 23:46:03,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 23:46:03,121 INFO L87 Difference]: Start difference. First operand 932 states and 1417 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 5 states have call successors, (33), 4 states have call predecessors, (33), 4 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) [2023-04-02 23:46:05,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:46:05,093 INFO L93 Difference]: Finished difference Result 2718 states and 4199 transitions. [2023-04-02 23:46:05,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 23:46:05,094 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 5 states have call successors, (33), 4 states have call predecessors, (33), 4 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) Word has length 146 [2023-04-02 23:46:05,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:46:05,103 INFO L225 Difference]: With dead ends: 2718 [2023-04-02 23:46:05,103 INFO L226 Difference]: Without dead ends: 1840 [2023-04-02 23:46:05,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-04-02 23:46:05,107 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 1308 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 3566 mSolverCounterSat, 505 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1404 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 4071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 505 IncrementalHoareTripleChecker+Valid, 3566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-04-02 23:46:05,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1404 Valid, 561 Invalid, 4071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [505 Valid, 3566 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-04-02 23:46:05,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1840 states. [2023-04-02 23:46:05,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1840 to 1803. [2023-04-02 23:46:05,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1803 states, 1197 states have (on average 1.5446950710108605) internal successors, (1849), 1253 states have internal predecessors, (1849), 449 states have call successors, (449), 150 states have call predecessors, (449), 156 states have return successors, (479), 419 states have call predecessors, (479), 441 states have call successors, (479) [2023-04-02 23:46:05,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1803 states to 1803 states and 2777 transitions. [2023-04-02 23:46:05,196 INFO L78 Accepts]: Start accepts. Automaton has 1803 states and 2777 transitions. Word has length 146 [2023-04-02 23:46:05,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:46:05,197 INFO L495 AbstractCegarLoop]: Abstraction has 1803 states and 2777 transitions. [2023-04-02 23:46:05,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 5 states have call successors, (33), 4 states have call predecessors, (33), 4 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) [2023-04-02 23:46:05,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1803 states and 2777 transitions. [2023-04-02 23:46:05,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-04-02 23:46:05,200 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:46:05,200 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:46:05,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 23:46:05,200 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:46:05,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:46:05,201 INFO L85 PathProgramCache]: Analyzing trace with hash -887698172, now seen corresponding path program 1 times [2023-04-02 23:46:05,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:46:05,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99555258] [2023-04-02 23:46:05,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:46:05,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:46:05,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:46:05,691 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 23:46:05,691 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:46:05,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99555258] [2023-04-02 23:46:05,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99555258] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:46:05,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:46:05,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 23:46:05,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613060050] [2023-04-02 23:46:05,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:46:05,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 23:46:05,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:46:05,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 23:46:05,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-04-02 23:46:05,693 INFO L87 Difference]: Start difference. First operand 1803 states and 2777 transitions. Second operand has 12 states, 9 states have (on average 7.555555555555555) internal successors, (68), 10 states have internal predecessors, (68), 6 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (30), 8 states have call predecessors, (30), 5 states have call successors, (30) [2023-04-02 23:46:09,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:46:09,481 INFO L93 Difference]: Finished difference Result 4588 states and 7042 transitions. [2023-04-02 23:46:09,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-04-02 23:46:09,482 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 7.555555555555555) internal successors, (68), 10 states have internal predecessors, (68), 6 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (30), 8 states have call predecessors, (30), 5 states have call successors, (30) Word has length 149 [2023-04-02 23:46:09,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:46:09,494 INFO L225 Difference]: With dead ends: 4588 [2023-04-02 23:46:09,494 INFO L226 Difference]: Without dead ends: 2838 [2023-04-02 23:46:09,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2023-04-02 23:46:09,505 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 1325 mSDsluCounter, 1099 mSDsCounter, 0 mSdLazyCounter, 9783 mSolverCounterSat, 656 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1377 SdHoareTripleChecker+Valid, 1305 SdHoareTripleChecker+Invalid, 10439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 656 IncrementalHoareTripleChecker+Valid, 9783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-04-02 23:46:09,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1377 Valid, 1305 Invalid, 10439 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [656 Valid, 9783 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-04-02 23:46:09,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2838 states. [2023-04-02 23:46:09,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2838 to 2789. [2023-04-02 23:46:09,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2789 states, 1854 states have (on average 1.52319309600863) internal successors, (2824), 1928 states have internal predecessors, (2824), 677 states have call successors, (677), 236 states have call predecessors, (677), 257 states have return successors, (741), 654 states have call predecessors, (741), 669 states have call successors, (741) [2023-04-02 23:46:09,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2789 states to 2789 states and 4242 transitions. [2023-04-02 23:46:09,634 INFO L78 Accepts]: Start accepts. Automaton has 2789 states and 4242 transitions. Word has length 149 [2023-04-02 23:46:09,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:46:09,634 INFO L495 AbstractCegarLoop]: Abstraction has 2789 states and 4242 transitions. [2023-04-02 23:46:09,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 7.555555555555555) internal successors, (68), 10 states have internal predecessors, (68), 6 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (30), 8 states have call predecessors, (30), 5 states have call successors, (30) [2023-04-02 23:46:09,634 INFO L276 IsEmpty]: Start isEmpty. Operand 2789 states and 4242 transitions. [2023-04-02 23:46:09,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-04-02 23:46:09,640 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:46:09,640 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:46:09,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 23:46:09,640 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:46:09,640 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:46:09,640 INFO L85 PathProgramCache]: Analyzing trace with hash -203542638, now seen corresponding path program 1 times [2023-04-02 23:46:09,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:46:09,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633670257] [2023-04-02 23:46:09,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:46:09,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:46:09,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:46:09,933 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 23:46:09,933 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:46:09,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633670257] [2023-04-02 23:46:09,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633670257] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:46:09,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:46:09,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 23:46:09,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781781987] [2023-04-02 23:46:09,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:46:09,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 23:46:09,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:46:09,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 23:46:09,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 23:46:09,935 INFO L87 Difference]: Start difference. First operand 2789 states and 4242 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (30), 4 states have call predecessors, (30), 2 states have call successors, (30) [2023-04-02 23:46:10,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:46:10,492 INFO L93 Difference]: Finished difference Result 2841 states and 4324 transitions. [2023-04-02 23:46:10,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 23:46:10,495 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (30), 4 states have call predecessors, (30), 2 states have call successors, (30) Word has length 150 [2023-04-02 23:46:10,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:46:10,511 INFO L225 Difference]: With dead ends: 2841 [2023-04-02 23:46:10,511 INFO L226 Difference]: Without dead ends: 2824 [2023-04-02 23:46:10,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-04-02 23:46:10,514 INFO L413 NwaCegarLoop]: 669 mSDtfsCounter, 730 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 2166 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 23:46:10,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 2166 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 23:46:10,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2824 states. [2023-04-02 23:46:10,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2824 to 2795. [2023-04-02 23:46:10,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2795 states, 1860 states have (on average 1.521505376344086) internal successors, (2830), 1934 states have internal predecessors, (2830), 677 states have call successors, (677), 236 states have call predecessors, (677), 257 states have return successors, (741), 654 states have call predecessors, (741), 669 states have call successors, (741) [2023-04-02 23:46:10,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2795 states to 2795 states and 4248 transitions. [2023-04-02 23:46:10,666 INFO L78 Accepts]: Start accepts. Automaton has 2795 states and 4248 transitions. Word has length 150 [2023-04-02 23:46:10,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:46:10,668 INFO L495 AbstractCegarLoop]: Abstraction has 2795 states and 4248 transitions. [2023-04-02 23:46:10,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (30), 4 states have call predecessors, (30), 2 states have call successors, (30) [2023-04-02 23:46:10,669 INFO L276 IsEmpty]: Start isEmpty. Operand 2795 states and 4248 transitions. [2023-04-02 23:46:10,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-04-02 23:46:10,671 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:46:10,672 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:46:10,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 23:46:10,672 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:46:10,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:46:10,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1190696284, now seen corresponding path program 1 times [2023-04-02 23:46:10,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:46:10,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737526679] [2023-04-02 23:46:10,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:46:10,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:46:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:46:10,973 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 23:46:10,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:46:10,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737526679] [2023-04-02 23:46:10,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737526679] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:46:10,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:46:10,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 23:46:10,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158231654] [2023-04-02 23:46:10,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:46:10,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 23:46:10,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:46:10,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 23:46:10,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-02 23:46:10,976 INFO L87 Difference]: Start difference. First operand 2795 states and 4248 transitions. Second operand has 9 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 3 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (31), 5 states have call predecessors, (31), 2 states have call successors, (31) [2023-04-02 23:46:11,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:46:11,504 INFO L93 Difference]: Finished difference Result 2966 states and 4480 transitions. [2023-04-02 23:46:11,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 23:46:11,505 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 3 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (31), 5 states have call predecessors, (31), 2 states have call successors, (31) Word has length 155 [2023-04-02 23:46:11,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:46:11,521 INFO L225 Difference]: With dead ends: 2966 [2023-04-02 23:46:11,522 INFO L226 Difference]: Without dead ends: 2949 [2023-04-02 23:46:11,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2023-04-02 23:46:11,526 INFO L413 NwaCegarLoop]: 670 mSDtfsCounter, 713 mSDsluCounter, 3884 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 4554 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 23:46:11,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 4554 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 23:46:11,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2949 states. [2023-04-02 23:46:11,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2949 to 2887. [2023-04-02 23:46:11,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2887 states, 1919 states have (on average 1.5138092756644086) internal successors, (2905), 1993 states have internal predecessors, (2905), 697 states have call successors, (697), 249 states have call predecessors, (697), 270 states have return successors, (770), 674 states have call predecessors, (770), 689 states have call successors, (770) [2023-04-02 23:46:11,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2887 states to 2887 states and 4372 transitions. [2023-04-02 23:46:11,708 INFO L78 Accepts]: Start accepts. Automaton has 2887 states and 4372 transitions. Word has length 155 [2023-04-02 23:46:11,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:46:11,710 INFO L495 AbstractCegarLoop]: Abstraction has 2887 states and 4372 transitions. [2023-04-02 23:46:11,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 3 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (31), 5 states have call predecessors, (31), 2 states have call successors, (31) [2023-04-02 23:46:11,710 INFO L276 IsEmpty]: Start isEmpty. Operand 2887 states and 4372 transitions. [2023-04-02 23:46:11,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-04-02 23:46:11,712 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:46:11,713 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:46:11,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 23:46:11,713 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:46:11,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:46:11,713 INFO L85 PathProgramCache]: Analyzing trace with hash -329879191, now seen corresponding path program 1 times [2023-04-02 23:46:11,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:46:11,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892376610] [2023-04-02 23:46:11,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:46:11,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:46:11,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:46:15,208 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 23:46:15,208 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:46:15,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892376610] [2023-04-02 23:46:15,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892376610] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:46:15,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287330824] [2023-04-02 23:46:15,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:46:15,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:46:15,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:46:15,223 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 23:46:15,226 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 23:46:15,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:46:15,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 3232 conjuncts, 13 conjunts are in the unsatisfiable core [2023-04-02 23:46:15,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:46:15,969 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-04-02 23:46:15,970 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 23:46:15,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287330824] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:46:15,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 23:46:15,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [35] total 40 [2023-04-02 23:46:15,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818071993] [2023-04-02 23:46:15,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:46:15,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 23:46:15,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:46:15,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 23:46:15,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1447, Unknown=0, NotChecked=0, Total=1560 [2023-04-02 23:46:15,972 INFO L87 Difference]: Start difference. First operand 2887 states and 4372 transitions. Second operand has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (34), 4 states have call predecessors, (34), 1 states have call successors, (34) [2023-04-02 23:46:16,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:46:16,216 INFO L93 Difference]: Finished difference Result 2978 states and 4484 transitions. [2023-04-02 23:46:16,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 23:46:16,217 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (34), 4 states have call predecessors, (34), 1 states have call successors, (34) Word has length 170 [2023-04-02 23:46:16,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:46:16,226 INFO L225 Difference]: With dead ends: 2978 [2023-04-02 23:46:16,227 INFO L226 Difference]: Without dead ends: 2961 [2023-04-02 23:46:16,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=117, Invalid=1523, Unknown=0, NotChecked=0, Total=1640 [2023-04-02 23:46:16,228 INFO L413 NwaCegarLoop]: 679 mSDtfsCounter, 9 mSDsluCounter, 3373 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 4052 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:46:16,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 4052 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:46:16,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2023-04-02 23:46:16,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 2941. [2023-04-02 23:46:16,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2941 states, 1955 states have (on average 1.5043478260869565) internal successors, (2941), 2029 states have internal predecessors, (2941), 697 states have call successors, (697), 249 states have call predecessors, (697), 288 states have return successors, (788), 692 states have call predecessors, (788), 689 states have call successors, (788) [2023-04-02 23:46:16,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2941 states to 2941 states and 4426 transitions. [2023-04-02 23:46:16,356 INFO L78 Accepts]: Start accepts. Automaton has 2941 states and 4426 transitions. Word has length 170 [2023-04-02 23:46:16,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:46:16,356 INFO L495 AbstractCegarLoop]: Abstraction has 2941 states and 4426 transitions. [2023-04-02 23:46:16,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (34), 4 states have call predecessors, (34), 1 states have call successors, (34) [2023-04-02 23:46:16,356 INFO L276 IsEmpty]: Start isEmpty. Operand 2941 states and 4426 transitions. [2023-04-02 23:46:16,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-04-02 23:46:16,359 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:46:16,360 INFO L195 NwaCegarLoop]: trace histogram [7, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:46:16,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-02 23:46:16,569 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,SelfDestructingSolverStorable5 [2023-04-02 23:46:16,569 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:46:16,570 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:46:16,570 INFO L85 PathProgramCache]: Analyzing trace with hash -682896510, now seen corresponding path program 1 times [2023-04-02 23:46:16,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:46:16,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949221934] [2023-04-02 23:46:16,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:46:16,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:46:16,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:46:18,142 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-04-02 23:46:18,143 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:46:18,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949221934] [2023-04-02 23:46:18,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949221934] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:46:18,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553210628] [2023-04-02 23:46:18,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:46:18,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:46:18,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:46:18,169 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 23:46:18,205 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 23:46:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:46:18,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 3296 conjuncts, 133 conjunts are in the unsatisfiable core [2023-04-02 23:46:18,718 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:46:19,648 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 30 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-04-02 23:46:19,649 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:47:02,026 WARN L223 SmtUtils]: Spent 41.95s on a formula simplification. DAG size of input: 1445 DAG size of output: 55 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-04-02 23:47:47,563 WARN L223 SmtUtils]: Spent 45.06s on a formula simplification. DAG size of input: 1487 DAG size of output: 97 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-04-02 23:48:34,257 WARN L223 SmtUtils]: Spent 45.71s on a formula simplification. DAG size of input: 1445 DAG size of output: 55 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-04-02 23:49:20,954 WARN L223 SmtUtils]: Spent 46.16s on a formula simplification. DAG size of input: 1491 DAG size of output: 101 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-04-02 23:50:01,986 WARN L223 SmtUtils]: Spent 37.29s on a formula simplification. DAG size of input: 1445 DAG size of output: 55 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)