/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_spec13_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 05:32:32,609 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 05:32:32,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 05:32:32,642 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 05:32:32,642 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 05:32:32,645 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 05:32:32,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 05:32:32,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 05:32:32,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 05:32:32,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 05:32:32,658 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 05:32:32,659 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 05:32:32,659 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 05:32:32,664 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 05:32:32,665 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 05:32:32,665 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 05:32:32,666 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 05:32:32,666 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 05:32:32,668 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 05:32:32,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 05:32:32,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 05:32:32,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 05:32:32,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 05:32:32,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 05:32:32,680 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 05:32:32,680 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 05:32:32,680 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 05:32:32,682 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 05:32:32,682 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 05:32:32,682 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 05:32:32,683 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 05:32:32,683 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 05:32:32,684 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 05:32:32,685 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 05:32:32,685 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 05:32:32,685 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 05:32:32,686 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 05:32:32,686 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 05:32:32,686 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 05:32:32,686 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 05:32:32,687 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 05:32:32,688 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 [2023-04-01 05:32:32,712 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 05:32:32,713 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 05:32:32,713 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 05:32:32,713 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 05:32:32,714 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 05:32:32,714 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 05:32:32,714 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 05:32:32,714 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 05:32:32,714 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 05:32:32,714 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 05:32:32,715 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 05:32:32,715 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 05:32:32,715 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 05:32:32,715 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 05:32:32,715 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 05:32:32,715 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 05:32:32,715 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 05:32:32,716 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 05:32:32,716 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 05:32:32,716 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 05:32:32,716 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 05:32:32,716 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 05:32:32,716 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 05:32:32,716 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 05:32:32,716 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 05:32:32,717 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 05:32:32,717 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 05:32:32,717 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 05:32:32,717 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 05:32:32,717 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 05:32:32,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 05:32:32,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 05:32:32,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 05:32:32,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 05:32:32,718 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 05:32:32,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 05:32:32,718 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 05:32:32,718 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 05:32:32,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 05:32:32,718 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 05:32:32,718 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 05:32:32,718 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 05:32:32,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 05:32:32,920 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 05:32:32,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 05:32:32,922 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 05:32:32,932 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 05:32:32,933 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c [2023-04-01 05:32:34,115 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 05:32:34,466 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 05:32:34,466 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c [2023-04-01 05:32:34,500 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b11e07e90/873ae65a6a954b398be13143b5a82948/FLAGc5ac64827 [2023-04-01 05:32:34,522 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b11e07e90/873ae65a6a954b398be13143b5a82948 [2023-04-01 05:32:34,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 05:32:34,527 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 05:32:34,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 05:32:34,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 05:32:34,532 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 05:32:34,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 05:32:34" (1/1) ... [2023-04-01 05:32:34,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68775955 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:32:34, skipping insertion in model container [2023-04-01 05:32:34,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 05:32:34" (1/1) ... [2023-04-01 05:32:34,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 05:32:34,607 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 05:32:34,857 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_spec13_product24.cil.c[51490,51503] [2023-04-01 05:32:34,883 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 05:32:34,896 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 05:32:34,965 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_spec13_product24.cil.c[51490,51503] [2023-04-01 05:32:35,002 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 05:32:35,025 INFO L208 MainTranslator]: Completed translation [2023-04-01 05:32:35,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:32:35 WrapperNode [2023-04-01 05:32:35,025 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 05:32:35,026 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 05:32:35,026 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 05:32:35,027 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 05:32:35,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:32:35" (1/1) ... [2023-04-01 05:32:35,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:32:35" (1/1) ... [2023-04-01 05:32:35,064 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:32:35" (1/1) ... [2023-04-01 05:32:35,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:32:35" (1/1) ... [2023-04-01 05:32:35,121 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:32:35" (1/1) ... [2023-04-01 05:32:35,137 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:32:35" (1/1) ... [2023-04-01 05:32:35,142 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:32:35" (1/1) ... [2023-04-01 05:32:35,155 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:32:35" (1/1) ... [2023-04-01 05:32:35,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 05:32:35,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 05:32:35,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 05:32:35,169 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 05:32:35,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:32:35" (1/1) ... [2023-04-01 05:32:35,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 05:32:35,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:32:35,222 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) [2023-04-01 05:32:35,224 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 [2023-04-01 05:32:35,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 05:32:35,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 05:32:35,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-01 05:32:35,264 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 05:32:35,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-01 05:32:35,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-01 05:32:35,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-01 05:32:35,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-01 05:32:35,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-01 05:32:35,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-01 05:32:35,266 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-01 05:32:35,266 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2023-04-01 05:32:35,266 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2023-04-01 05:32:35,266 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-04-01 05:32:35,266 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2023-04-01 05:32:35,266 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-04-01 05:32:35,266 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2023-04-01 05:32:35,266 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-04-01 05:32:35,266 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-04-01 05:32:35,266 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2023-04-01 05:32:35,267 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-04-01 05:32:35,267 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-04-01 05:32:35,267 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-04-01 05:32:35,267 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-04-01 05:32:35,267 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2023-04-01 05:32:35,267 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2023-04-01 05:32:35,267 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2023-04-01 05:32:35,267 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2023-04-01 05:32:35,267 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2023-04-01 05:32:35,267 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-04-01 05:32:35,267 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2023-04-01 05:32:35,267 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-04-01 05:32:35,268 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2023-04-01 05:32:35,268 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2023-04-01 05:32:35,268 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2023-04-01 05:32:35,268 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-04-01 05:32:35,268 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2023-04-01 05:32:35,268 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2023-04-01 05:32:35,268 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-01 05:32:35,268 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2023-04-01 05:32:35,268 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2023-04-01 05:32:35,268 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2023-04-01 05:32:35,269 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2023-04-01 05:32:35,269 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2023-04-01 05:32:35,269 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2023-04-01 05:32:35,270 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-04-01 05:32:35,270 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2023-04-01 05:32:35,270 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-04-01 05:32:35,270 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2023-04-01 05:32:35,270 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2023-04-01 05:32:35,270 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-04-01 05:32:35,270 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2023-04-01 05:32:35,271 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-01 05:32:35,271 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2023-04-01 05:32:35,271 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2023-04-01 05:32:35,271 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2023-04-01 05:32:35,271 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-01 05:32:35,272 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2023-04-01 05:32:35,272 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-01 05:32:35,272 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-01 05:32:35,272 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 05:32:35,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-01 05:32:35,273 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2023-04-01 05:32:35,273 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2023-04-01 05:32:35,273 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2023-04-01 05:32:35,273 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-04-01 05:32:35,273 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-04-01 05:32:35,273 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2023-04-01 05:32:35,273 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-04-01 05:32:35,273 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-04-01 05:32:35,273 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-04-01 05:32:35,273 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-04-01 05:32:35,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__1 [2023-04-01 05:32:35,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification13_spec__2 [2023-04-01 05:32:35,273 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-04-01 05:32:35,274 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-04-01 05:32:35,274 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-04-01 05:32:35,274 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-01 05:32:35,274 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-01 05:32:35,274 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-01 05:32:35,274 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-01 05:32:35,275 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 05:32:35,275 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 05:32:35,275 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 05:32:35,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 05:32:35,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 05:32:35,276 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 05:32:35,276 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 05:32:35,276 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-01 05:32:35,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 05:32:35,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 05:32:35,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 05:32:35,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 05:32:35,276 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-01 05:32:35,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 05:32:35,276 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-01 05:32:35,276 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-01 05:32:35,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 05:32:35,277 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-01 05:32:35,277 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-01 05:32:35,277 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-01 05:32:35,277 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2023-04-01 05:32:35,277 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-04-01 05:32:35,277 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2023-04-01 05:32:35,277 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-04-01 05:32:35,277 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-01 05:32:35,277 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-01 05:32:35,277 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-01 05:32:35,277 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-04-01 05:32:35,278 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-04-01 05:32:35,278 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-04-01 05:32:35,278 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-04-01 05:32:35,278 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-04-01 05:32:35,278 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-04-01 05:32:35,278 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-04-01 05:32:35,278 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-04-01 05:32:35,279 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2023-04-01 05:32:35,279 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-01 05:32:35,279 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-04-01 05:32:35,279 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2023-04-01 05:32:35,279 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2023-04-01 05:32:35,280 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2023-04-01 05:32:35,281 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-04-01 05:32:35,281 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2023-04-01 05:32:35,285 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2023-04-01 05:32:35,285 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-04-01 05:32:35,285 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-04-01 05:32:35,285 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2023-04-01 05:32:35,286 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2023-04-01 05:32:35,286 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2023-04-01 05:32:35,286 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2023-04-01 05:32:35,286 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2023-04-01 05:32:35,286 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-04-01 05:32:35,286 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-04-01 05:32:35,286 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2023-04-01 05:32:35,286 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-04-01 05:32:35,287 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2023-04-01 05:32:35,287 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2023-04-01 05:32:35,287 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2023-04-01 05:32:35,287 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-04-01 05:32:35,287 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-04-01 05:32:35,287 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2023-04-01 05:32:35,287 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2023-04-01 05:32:35,287 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2023-04-01 05:32:35,287 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-04-01 05:32:35,287 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2023-04-01 05:32:35,287 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2023-04-01 05:32:35,287 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__1 [2023-04-01 05:32:35,287 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification13_spec__2 [2023-04-01 05:32:35,287 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2023-04-01 05:32:35,287 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2023-04-01 05:32:35,287 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 05:32:35,287 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2023-04-01 05:32:35,288 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-04-01 05:32:35,288 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-04-01 05:32:35,288 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2023-04-01 05:32:35,288 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2023-04-01 05:32:35,288 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-04-01 05:32:35,288 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2023-04-01 05:32:35,288 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2023-04-01 05:32:35,288 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2023-04-01 05:32:35,288 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-01 05:32:35,288 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2023-04-01 05:32:35,288 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-01 05:32:35,288 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-01 05:32:35,288 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-01 05:32:35,288 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-01 05:32:35,288 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-01 05:32:35,289 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 05:32:35,289 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-01 05:32:35,289 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2023-04-01 05:32:35,289 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2023-04-01 05:32:35,289 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2023-04-01 05:32:35,289 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-01 05:32:35,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 05:32:35,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 05:32:35,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 05:32:35,547 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 05:32:35,550 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 05:32:36,701 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 05:32:37,362 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 05:32:37,362 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-04-01 05:32:37,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 05:32:37 BoogieIcfgContainer [2023-04-01 05:32:37,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 05:32:37,368 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 05:32:37,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 05:32:37,371 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 05:32:37,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 05:32:34" (1/3) ... [2023-04-01 05:32:37,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e964ae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 05:32:37, skipping insertion in model container [2023-04-01 05:32:37,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:32:35" (2/3) ... [2023-04-01 05:32:37,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e964ae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 05:32:37, skipping insertion in model container [2023-04-01 05:32:37,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 05:32:37" (3/3) ... [2023-04-01 05:32:37,374 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product24.cil.c [2023-04-01 05:32:37,388 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 05:32:37,388 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 05:32:37,437 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 05:32:37,442 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;@62161627, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 05:32:37,443 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 05:32:37,449 INFO L276 IsEmpty]: Start isEmpty. Operand has 631 states, 378 states have (on average 1.492063492063492) internal successors, (564), 404 states have internal predecessors, (564), 185 states have call successors, (185), 56 states have call predecessors, (185), 56 states have return successors, (185), 178 states have call predecessors, (185), 185 states have call successors, (185) [2023-04-01 05:32:37,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-04-01 05:32:37,463 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:32:37,464 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:32:37,464 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:32:37,468 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:32:37,469 INFO L85 PathProgramCache]: Analyzing trace with hash -2036703279, now seen corresponding path program 1 times [2023-04-01 05:32:37,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:32:37,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145865471] [2023-04-01 05:32:37,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:32:37,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:32:37,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:32:38,562 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-01 05:32:38,563 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:32:38,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145865471] [2023-04-01 05:32:38,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145865471] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:32:38,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:32:38,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 05:32:38,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379677012] [2023-04-01 05:32:38,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:32:38,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 05:32:38,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:32:38,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 05:32:38,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 05:32:38,605 INFO L87 Difference]: Start difference. First operand has 631 states, 378 states have (on average 1.492063492063492) internal successors, (564), 404 states have internal predecessors, (564), 185 states have call successors, (185), 56 states have call predecessors, (185), 56 states have return successors, (185), 178 states have call predecessors, (185), 185 states have call successors, (185) Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-04-01 05:32:39,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:32:39,031 INFO L93 Difference]: Finished difference Result 1479 states and 2260 transitions. [2023-04-01 05:32:39,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 05:32:39,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 95 [2023-04-01 05:32:39,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:32:39,047 INFO L225 Difference]: With dead ends: 1479 [2023-04-01 05:32:39,047 INFO L226 Difference]: Without dead ends: 977 [2023-04-01 05:32:39,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 05:32:39,055 INFO L413 NwaCegarLoop]: 792 mSDtfsCounter, 728 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1451 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 05:32:39,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1451 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 05:32:39,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2023-04-01 05:32:39,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 933. [2023-04-01 05:32:39,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 933 states, 621 states have (on average 1.5297906602254427) internal successors, (950), 648 states have internal predecessors, (950), 228 states have call successors, (228), 88 states have call predecessors, (228), 83 states have return successors, (230), 209 states have call predecessors, (230), 221 states have call successors, (230) [2023-04-01 05:32:39,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1408 transitions. [2023-04-01 05:32:39,137 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1408 transitions. Word has length 95 [2023-04-01 05:32:39,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:32:39,138 INFO L495 AbstractCegarLoop]: Abstraction has 933 states and 1408 transitions. [2023-04-01 05:32:39,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-04-01 05:32:39,138 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1408 transitions. [2023-04-01 05:32:39,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-04-01 05:32:39,144 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:32:39,144 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:32:39,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 05:32:39,144 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:32:39,145 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:32:39,145 INFO L85 PathProgramCache]: Analyzing trace with hash -979138660, now seen corresponding path program 1 times [2023-04-01 05:32:39,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:32:39,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154540236] [2023-04-01 05:32:39,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:32:39,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:32:39,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:32:39,713 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-01 05:32:39,713 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:32:39,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154540236] [2023-04-01 05:32:39,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154540236] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:32:39,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:32:39,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 05:32:39,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169787124] [2023-04-01 05:32:39,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:32:39,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 05:32:39,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:32:39,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 05:32:39,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-01 05:32:39,717 INFO L87 Difference]: Start difference. First operand 933 states and 1408 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (27), 5 states have call predecessors, (27), 4 states have call successors, (27) [2023-04-01 05:32:42,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:32:42,132 INFO L93 Difference]: Finished difference Result 2797 states and 4286 transitions. [2023-04-01 05:32:42,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-01 05:32:42,133 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (27), 5 states have call predecessors, (27), 4 states have call successors, (27) Word has length 143 [2023-04-01 05:32:42,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:32:42,150 INFO L225 Difference]: With dead ends: 2797 [2023-04-01 05:32:42,151 INFO L226 Difference]: Without dead ends: 1902 [2023-04-01 05:32:42,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-04-01 05:32:42,159 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 1395 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 4013 mSolverCounterSat, 521 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1503 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 4534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 521 IncrementalHoareTripleChecker+Valid, 4013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-04-01 05:32:42,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1503 Valid, 604 Invalid, 4534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [521 Valid, 4013 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-04-01 05:32:42,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1902 states. [2023-04-01 05:32:42,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1902 to 1839. [2023-04-01 05:32:42,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1839 states, 1235 states have (on average 1.5327935222672064) internal successors, (1893), 1287 states have internal predecessors, (1893), 436 states have call successors, (436), 166 states have call predecessors, (436), 167 states have return successors, (480), 411 states have call predecessors, (480), 427 states have call successors, (480) [2023-04-01 05:32:42,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1839 states to 1839 states and 2809 transitions. [2023-04-01 05:32:42,343 INFO L78 Accepts]: Start accepts. Automaton has 1839 states and 2809 transitions. Word has length 143 [2023-04-01 05:32:42,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:32:42,344 INFO L495 AbstractCegarLoop]: Abstraction has 1839 states and 2809 transitions. [2023-04-01 05:32:42,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (27), 5 states have call predecessors, (27), 4 states have call successors, (27) [2023-04-01 05:32:42,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1839 states and 2809 transitions. [2023-04-01 05:32:42,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-04-01 05:32:42,351 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:32:42,351 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:32:42,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 05:32:42,352 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:32:42,352 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:32:42,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1958991114, now seen corresponding path program 1 times [2023-04-01 05:32:42,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:32:42,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049296649] [2023-04-01 05:32:42,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:32:42,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:32:42,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:32:43,003 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-01 05:32:43,003 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:32:43,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049296649] [2023-04-01 05:32:43,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049296649] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:32:43,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:32:43,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-01 05:32:43,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105811960] [2023-04-01 05:32:43,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:32:43,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-01 05:32:43,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:32:43,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-01 05:32:43,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-04-01 05:32:43,007 INFO L87 Difference]: Start difference. First operand 1839 states and 2809 transitions. Second operand has 10 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 4 states have call successors, (35), 4 states have call predecessors, (35), 4 states have return successors, (28), 6 states have call predecessors, (28), 4 states have call successors, (28) [2023-04-01 05:32:43,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:32:43,651 INFO L93 Difference]: Finished difference Result 4039 states and 6187 transitions. [2023-04-01 05:32:43,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 05:32:43,651 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 4 states have call successors, (35), 4 states have call predecessors, (35), 4 states have return successors, (28), 6 states have call predecessors, (28), 4 states have call successors, (28) Word has length 146 [2023-04-01 05:32:43,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:32:43,665 INFO L225 Difference]: With dead ends: 4039 [2023-04-01 05:32:43,665 INFO L226 Difference]: Without dead ends: 2237 [2023-04-01 05:32:43,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-04-01 05:32:43,678 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 531 mSDsluCounter, 5399 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 6257 SdHoareTripleChecker+Invalid, 1021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 05:32:43,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [535 Valid, 6257 Invalid, 1021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 05:32:43,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2237 states. [2023-04-01 05:32:43,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2237 to 2220. [2023-04-01 05:32:43,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2220 states, 1485 states have (on average 1.5043771043771044) internal successors, (2234), 1534 states have internal predecessors, (2234), 515 states have call successors, (515), 216 states have call predecessors, (515), 219 states have return successors, (600), 496 states have call predecessors, (600), 504 states have call successors, (600) [2023-04-01 05:32:43,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2220 states to 2220 states and 3349 transitions. [2023-04-01 05:32:43,772 INFO L78 Accepts]: Start accepts. Automaton has 2220 states and 3349 transitions. Word has length 146 [2023-04-01 05:32:43,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:32:43,773 INFO L495 AbstractCegarLoop]: Abstraction has 2220 states and 3349 transitions. [2023-04-01 05:32:43,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 4 states have call successors, (35), 4 states have call predecessors, (35), 4 states have return successors, (28), 6 states have call predecessors, (28), 4 states have call successors, (28) [2023-04-01 05:32:43,773 INFO L276 IsEmpty]: Start isEmpty. Operand 2220 states and 3349 transitions. [2023-04-01 05:32:43,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-04-01 05:32:43,777 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:32:43,777 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:32:43,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 05:32:43,778 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:32:43,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:32:43,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1738827258, now seen corresponding path program 1 times [2023-04-01 05:32:43,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:32:43,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342873132] [2023-04-01 05:32:43,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:32:43,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:32:43,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:32:44,003 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-04-01 05:32:44,003 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:32:44,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342873132] [2023-04-01 05:32:44,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342873132] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 05:32:44,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83506609] [2023-04-01 05:32:44,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:32:44,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:32:44,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:32:44,014 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) [2023-04-01 05:32:44,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 05:32:44,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:32:44,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 2887 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-01 05:32:44,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:32:44,540 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-01 05:32:44,541 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 05:32:44,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83506609] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:32:44,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 05:32:44,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2023-04-01 05:32:44,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118410218] [2023-04-01 05:32:44,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:32:44,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 05:32:44,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:32:44,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 05:32:44,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 05:32:44,542 INFO L87 Difference]: Start difference. First operand 2220 states and 3349 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-04-01 05:32:44,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:32:44,768 INFO L93 Difference]: Finished difference Result 4439 states and 6819 transitions. [2023-04-01 05:32:44,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 05:32:44,768 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 147 [2023-04-01 05:32:44,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:32:44,780 INFO L225 Difference]: With dead ends: 4439 [2023-04-01 05:32:44,781 INFO L226 Difference]: Without dead ends: 2256 [2023-04-01 05:32:44,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 05:32:44,792 INFO L413 NwaCegarLoop]: 707 mSDtfsCounter, 85 mSDsluCounter, 1327 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 2034 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 05:32:44,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 2034 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 05:32:44,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2256 states. [2023-04-01 05:32:44,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2256 to 2256. [2023-04-01 05:32:44,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2256 states, 1515 states have (on average 1.4983498349834983) internal successors, (2270), 1564 states have internal predecessors, (2270), 515 states have call successors, (515), 222 states have call predecessors, (515), 225 states have return successors, (600), 496 states have call predecessors, (600), 504 states have call successors, (600) [2023-04-01 05:32:44,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2256 states to 2256 states and 3385 transitions. [2023-04-01 05:32:44,896 INFO L78 Accepts]: Start accepts. Automaton has 2256 states and 3385 transitions. Word has length 147 [2023-04-01 05:32:44,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:32:44,897 INFO L495 AbstractCegarLoop]: Abstraction has 2256 states and 3385 transitions. [2023-04-01 05:32:44,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-04-01 05:32:44,897 INFO L276 IsEmpty]: Start isEmpty. Operand 2256 states and 3385 transitions. [2023-04-01 05:32:44,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-04-01 05:32:44,900 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:32:44,900 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:32:44,913 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-01 05:32:45,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:32:45,111 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:32:45,112 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:32:45,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1549051421, now seen corresponding path program 1 times [2023-04-01 05:32:45,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:32:45,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366538724] [2023-04-01 05:32:45,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:32:45,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:32:45,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:32:45,348 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-04-01 05:32:45,349 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:32:45,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366538724] [2023-04-01 05:32:45,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366538724] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 05:32:45,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744443118] [2023-04-01 05:32:45,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:32:45,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:32:45,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:32:45,351 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) [2023-04-01 05:32:45,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 05:32:45,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:32:45,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 2892 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-01 05:32:45,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:32:45,877 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-04-01 05:32:45,878 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 05:32:45,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744443118] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:32:45,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 05:32:45,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-04-01 05:32:45,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686710010] [2023-04-01 05:32:45,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:32:45,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 05:32:45,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:32:45,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 05:32:45,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-01 05:32:45,879 INFO L87 Difference]: Start difference. First operand 2256 states and 3385 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-04-01 05:32:46,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:32:46,028 INFO L93 Difference]: Finished difference Result 4493 states and 6849 transitions. [2023-04-01 05:32:46,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 05:32:46,029 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 149 [2023-04-01 05:32:46,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:32:46,038 INFO L225 Difference]: With dead ends: 4493 [2023-04-01 05:32:46,038 INFO L226 Difference]: Without dead ends: 2250 [2023-04-01 05:32:46,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-04-01 05:32:46,046 INFO L413 NwaCegarLoop]: 706 mSDtfsCounter, 91 mSDsluCounter, 1324 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 2030 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 05:32:46,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 2030 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 05:32:46,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2250 states. [2023-04-01 05:32:46,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2250 to 2250. [2023-04-01 05:32:46,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2250 states, 1509 states have (on average 1.4884029158383034) internal successors, (2246), 1558 states have internal predecessors, (2246), 515 states have call successors, (515), 222 states have call predecessors, (515), 225 states have return successors, (600), 496 states have call predecessors, (600), 504 states have call successors, (600) [2023-04-01 05:32:46,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2250 states to 2250 states and 3361 transitions. [2023-04-01 05:32:46,127 INFO L78 Accepts]: Start accepts. Automaton has 2250 states and 3361 transitions. Word has length 149 [2023-04-01 05:32:46,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:32:46,127 INFO L495 AbstractCegarLoop]: Abstraction has 2250 states and 3361 transitions. [2023-04-01 05:32:46,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-04-01 05:32:46,127 INFO L276 IsEmpty]: Start isEmpty. Operand 2250 states and 3361 transitions. [2023-04-01 05:32:46,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-04-01 05:32:46,130 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:32:46,130 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:32:46,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 05:32:46,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:32:46,340 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:32:46,340 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:32:46,340 INFO L85 PathProgramCache]: Analyzing trace with hash 682154760, now seen corresponding path program 1 times [2023-04-01 05:32:46,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:32:46,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171639039] [2023-04-01 05:32:46,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:32:46,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:32:46,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:32:46,603 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-04-01 05:32:46,603 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:32:46,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171639039] [2023-04-01 05:32:46,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171639039] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 05:32:46,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115537610] [2023-04-01 05:32:46,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:32:46,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:32:46,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:32:46,604 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 05:32:46,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 05:32:47,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:32:47,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 2896 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 05:32:47,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:32:47,152 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-01 05:32:47,152 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 05:32:47,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115537610] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:32:47,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 05:32:47,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-04-01 05:32:47,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159571893] [2023-04-01 05:32:47,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:32:47,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 05:32:47,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:32:47,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 05:32:47,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-04-01 05:32:47,155 INFO L87 Difference]: Start difference. First operand 2250 states and 3361 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-04-01 05:32:48,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:32:48,014 INFO L93 Difference]: Finished difference Result 5706 states and 8884 transitions. [2023-04-01 05:32:48,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 05:32:48,014 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 150 [2023-04-01 05:32:48,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:32:48,038 INFO L225 Difference]: With dead ends: 5706 [2023-04-01 05:32:48,038 INFO L226 Difference]: Without dead ends: 3493 [2023-04-01 05:32:48,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-04-01 05:32:48,050 INFO L413 NwaCegarLoop]: 796 mSDtfsCounter, 732 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 2216 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 05:32:48,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 2216 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 929 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 05:32:48,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3493 states. [2023-04-01 05:32:48,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3493 to 3445. [2023-04-01 05:32:48,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3445 states, 2314 states have (on average 1.439066551426102) internal successors, (3330), 2388 states have internal predecessors, (3330), 774 states have call successors, (774), 348 states have call predecessors, (774), 356 states have return successors, (1074), 748 states have call predecessors, (1074), 759 states have call successors, (1074) [2023-04-01 05:32:48,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3445 states to 3445 states and 5178 transitions. [2023-04-01 05:32:48,254 INFO L78 Accepts]: Start accepts. Automaton has 3445 states and 5178 transitions. Word has length 150 [2023-04-01 05:32:48,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:32:48,256 INFO L495 AbstractCegarLoop]: Abstraction has 3445 states and 5178 transitions. [2023-04-01 05:32:48,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-04-01 05:32:48,256 INFO L276 IsEmpty]: Start isEmpty. Operand 3445 states and 5178 transitions. [2023-04-01 05:32:48,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-04-01 05:32:48,258 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:32:48,258 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:32:48,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 05:32:48,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:32:48,466 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:32:48,467 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:32:48,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1284261569, now seen corresponding path program 1 times [2023-04-01 05:32:48,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:32:48,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150529894] [2023-04-01 05:32:48,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:32:48,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:32:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:32:48,838 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-04-01 05:32:48,839 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:32:48,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150529894] [2023-04-01 05:32:48,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150529894] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 05:32:48,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001952195] [2023-04-01 05:32:48,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:32:48,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:32:48,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:32:48,840 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 05:32:48,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 05:32:49,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:32:49,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 2897 conjuncts, 16 conjunts are in the unsatisfiable core [2023-04-01 05:32:49,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:32:49,461 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-04-01 05:32:49,461 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 05:32:49,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001952195] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:32:49,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 05:32:49,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-04-01 05:32:49,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249996873] [2023-04-01 05:32:49,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:32:49,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 05:32:49,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:32:49,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 05:32:49,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-04-01 05:32:49,463 INFO L87 Difference]: Start difference. First operand 3445 states and 5178 transitions. Second operand has 7 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 4 states have call successors, (35), 4 states have call predecessors, (35), 5 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2023-04-01 05:32:50,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:32:50,373 INFO L93 Difference]: Finished difference Result 7815 states and 12160 transitions. [2023-04-01 05:32:50,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 05:32:50,374 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 4 states have call successors, (35), 4 states have call predecessors, (35), 5 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 151 [2023-04-01 05:32:50,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:32:50,395 INFO L225 Difference]: With dead ends: 7815 [2023-04-01 05:32:50,395 INFO L226 Difference]: Without dead ends: 4407 [2023-04-01 05:32:50,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-04-01 05:32:50,410 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 1433 mSDsluCounter, 2144 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1436 SdHoareTripleChecker+Valid, 3038 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 355 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 05:32:50,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1436 Valid, 3038 Invalid, 1080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [355 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 05:32:50,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4407 states. [2023-04-01 05:32:50,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4407 to 4363. [2023-04-01 05:32:50,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4363 states, 2963 states have (on average 1.423219709753628) internal successors, (4217), 3039 states have internal predecessors, (4217), 911 states have call successors, (911), 464 states have call predecessors, (911), 488 states have return successors, (1707), 899 states have call predecessors, (1707), 888 states have call successors, (1707) [2023-04-01 05:32:50,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4363 states to 4363 states and 6835 transitions. [2023-04-01 05:32:50,611 INFO L78 Accepts]: Start accepts. Automaton has 4363 states and 6835 transitions. Word has length 151 [2023-04-01 05:32:50,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:32:50,611 INFO L495 AbstractCegarLoop]: Abstraction has 4363 states and 6835 transitions. [2023-04-01 05:32:50,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 4 states have call successors, (35), 4 states have call predecessors, (35), 5 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2023-04-01 05:32:50,611 INFO L276 IsEmpty]: Start isEmpty. Operand 4363 states and 6835 transitions. [2023-04-01 05:32:50,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-04-01 05:32:50,614 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:32:50,614 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:32:50,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 05:32:50,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:32:50,826 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:32:50,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:32:50,826 INFO L85 PathProgramCache]: Analyzing trace with hash -118600864, now seen corresponding path program 1 times [2023-04-01 05:32:50,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:32:50,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612047986] [2023-04-01 05:32:50,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:32:50,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:32:50,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:32:51,035 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-04-01 05:32:51,035 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:32:51,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612047986] [2023-04-01 05:32:51,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612047986] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 05:32:51,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429709063] [2023-04-01 05:32:51,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:32:51,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:32:51,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:32:51,037 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 05:32:51,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 05:32:51,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:32:51,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 2899 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-01 05:32:51,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:32:51,519 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-04-01 05:32:51,520 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 05:32:51,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429709063] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:32:51,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 05:32:51,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-04-01 05:32:51,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59679848] [2023-04-01 05:32:51,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:32:51,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 05:32:51,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:32:51,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 05:32:51,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-01 05:32:51,521 INFO L87 Difference]: Start difference. First operand 4363 states and 6835 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2023-04-01 05:32:51,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:32:51,755 INFO L93 Difference]: Finished difference Result 8782 states and 14221 transitions. [2023-04-01 05:32:51,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 05:32:51,756 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 151 [2023-04-01 05:32:51,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:32:51,778 INFO L225 Difference]: With dead ends: 8782 [2023-04-01 05:32:51,778 INFO L226 Difference]: Without dead ends: 4469 [2023-04-01 05:32:51,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-01 05:32:51,798 INFO L413 NwaCegarLoop]: 718 mSDtfsCounter, 2 mSDsluCounter, 2135 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2853 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 05:32:51,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2853 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 05:32:51,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4469 states. [2023-04-01 05:32:52,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4469 to 4403. [2023-04-01 05:32:52,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4403 states, 2993 states have (on average 1.4189776144336785) internal successors, (4247), 3069 states have internal predecessors, (4247), 911 states have call successors, (911), 464 states have call predecessors, (911), 498 states have return successors, (1717), 909 states have call predecessors, (1717), 888 states have call successors, (1717) [2023-04-01 05:32:52,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4403 states to 4403 states and 6875 transitions. [2023-04-01 05:32:52,092 INFO L78 Accepts]: Start accepts. Automaton has 4403 states and 6875 transitions. Word has length 151 [2023-04-01 05:32:52,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:32:52,093 INFO L495 AbstractCegarLoop]: Abstraction has 4403 states and 6875 transitions. [2023-04-01 05:32:52,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2023-04-01 05:32:52,093 INFO L276 IsEmpty]: Start isEmpty. Operand 4403 states and 6875 transitions. [2023-04-01 05:32:52,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-04-01 05:32:52,097 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:32:52,097 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:32:52,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 05:32:52,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:32:52,307 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:32:52,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:32:52,307 INFO L85 PathProgramCache]: Analyzing trace with hash 35590295, now seen corresponding path program 1 times [2023-04-01 05:32:52,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:32:52,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084043452] [2023-04-01 05:32:52,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:32:52,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:32:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:32:52,745 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-04-01 05:32:52,745 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:32:52,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084043452] [2023-04-01 05:32:52,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084043452] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 05:32:52,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423340355] [2023-04-01 05:32:52,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:32:52,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:32:52,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:32:52,750 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 05:32:52,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 05:32:53,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:32:53,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 2903 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 05:32:53,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:32:53,260 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-04-01 05:32:53,260 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 05:32:53,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423340355] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:32:53,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 05:32:53,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-04-01 05:32:53,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9472591] [2023-04-01 05:32:53,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:32:53,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 05:32:53,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:32:53,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 05:32:53,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-01 05:32:53,262 INFO L87 Difference]: Start difference. First operand 4403 states and 6875 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-04-01 05:32:53,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:32:53,584 INFO L93 Difference]: Finished difference Result 8989 states and 14553 transitions. [2023-04-01 05:32:53,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-01 05:32:53,585 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 153 [2023-04-01 05:32:53,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:32:53,612 INFO L225 Difference]: With dead ends: 8989 [2023-04-01 05:32:53,612 INFO L226 Difference]: Without dead ends: 4637 [2023-04-01 05:32:53,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-01 05:32:53,631 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 19 mSDsluCounter, 1288 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 1992 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 05:32:53,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 1992 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 05:32:53,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4637 states. [2023-04-01 05:32:53,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4637 to 4583. [2023-04-01 05:32:53,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4583 states, 3173 states have (on average 1.4311377245508983) internal successors, (4541), 3249 states have internal predecessors, (4541), 911 states have call successors, (911), 464 states have call predecessors, (911), 498 states have return successors, (1717), 909 states have call predecessors, (1717), 888 states have call successors, (1717) [2023-04-01 05:32:53,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4583 states to 4583 states and 7169 transitions. [2023-04-01 05:32:53,880 INFO L78 Accepts]: Start accepts. Automaton has 4583 states and 7169 transitions. Word has length 153 [2023-04-01 05:32:53,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:32:53,881 INFO L495 AbstractCegarLoop]: Abstraction has 4583 states and 7169 transitions. [2023-04-01 05:32:53,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-04-01 05:32:53,881 INFO L276 IsEmpty]: Start isEmpty. Operand 4583 states and 7169 transitions. [2023-04-01 05:32:53,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-04-01 05:32:53,884 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:32:53,884 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:32:53,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-01 05:32:54,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:32:54,093 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:32:54,094 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:32:54,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1699142131, now seen corresponding path program 1 times [2023-04-01 05:32:54,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:32:54,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098063263] [2023-04-01 05:32:54,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:32:54,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:32:54,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:32:54,677 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-04-01 05:32:54,677 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:32:54,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098063263] [2023-04-01 05:32:54,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098063263] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 05:32:54,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734647774] [2023-04-01 05:32:54,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:32:54,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:32:54,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:32:54,693 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 05:32:54,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-01 05:32:55,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:32:55,166 INFO L262 TraceCheckSpWp]: Trace formula consists of 2905 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 05:32:55,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:32:55,218 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-01 05:32:55,218 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 05:32:55,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734647774] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:32:55,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 05:32:55,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-04-01 05:32:55,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799012307] [2023-04-01 05:32:55,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:32:55,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 05:32:55,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:32:55,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 05:32:55,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-04-01 05:32:55,219 INFO L87 Difference]: Start difference. First operand 4583 states and 7169 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-04-01 05:32:56,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:32:56,319 INFO L93 Difference]: Finished difference Result 11486 states and 19549 transitions. [2023-04-01 05:32:56,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 05:32:56,320 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 155 [2023-04-01 05:32:56,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:32:56,371 INFO L225 Difference]: With dead ends: 11486 [2023-04-01 05:32:56,371 INFO L226 Difference]: Without dead ends: 7871 [2023-04-01 05:32:56,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-04-01 05:32:56,388 INFO L413 NwaCegarLoop]: 813 mSDtfsCounter, 727 mSDsluCounter, 1614 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 2427 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-01 05:32:56,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [729 Valid, 2427 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-01 05:32:56,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7871 states. [2023-04-01 05:32:56,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7871 to 7722. [2023-04-01 05:32:56,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7722 states, 5364 states have (on average 1.4256152125279642) internal successors, (7647), 5487 states have internal predecessors, (7647), 1514 states have call successors, (1514), 782 states have call predecessors, (1514), 843 states have return successors, (3611), 1518 states have call predecessors, (3611), 1477 states have call successors, (3611) [2023-04-01 05:32:56,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7722 states to 7722 states and 12772 transitions. [2023-04-01 05:32:56,815 INFO L78 Accepts]: Start accepts. Automaton has 7722 states and 12772 transitions. Word has length 155 [2023-04-01 05:32:56,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:32:56,815 INFO L495 AbstractCegarLoop]: Abstraction has 7722 states and 12772 transitions. [2023-04-01 05:32:56,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-04-01 05:32:56,815 INFO L276 IsEmpty]: Start isEmpty. Operand 7722 states and 12772 transitions. [2023-04-01 05:32:56,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-04-01 05:32:56,820 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:32:56,820 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:32:56,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-01 05:32:57,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:32:57,040 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:32:57,040 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:32:57,040 INFO L85 PathProgramCache]: Analyzing trace with hash 330520055, now seen corresponding path program 1 times [2023-04-01 05:32:57,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:32:57,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186022844] [2023-04-01 05:32:57,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:32:57,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:32:57,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:32:57,166 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-04-01 05:32:57,166 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:32:57,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186022844] [2023-04-01 05:32:57,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186022844] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 05:32:57,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938464930] [2023-04-01 05:32:57,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:32:57,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:32:57,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:32:57,167 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 05:32:57,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-01 05:32:57,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:32:57,671 INFO L262 TraceCheckSpWp]: Trace formula consists of 2904 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-01 05:32:57,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:32:57,689 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-04-01 05:32:57,689 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 05:32:57,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938464930] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:32:57,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 05:32:57,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2023-04-01 05:32:57,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045786170] [2023-04-01 05:32:57,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:32:57,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 05:32:57,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:32:57,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 05:32:57,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-04-01 05:32:57,692 INFO L87 Difference]: Start difference. First operand 7722 states and 12772 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-04-01 05:32:58,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:32:58,043 INFO L93 Difference]: Finished difference Result 15605 states and 27224 transitions. [2023-04-01 05:32:58,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-01 05:32:58,043 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 155 [2023-04-01 05:32:58,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:32:58,078 INFO L225 Difference]: With dead ends: 15605 [2023-04-01 05:32:58,078 INFO L226 Difference]: Without dead ends: 7934 [2023-04-01 05:32:58,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-04-01 05:32:58,109 INFO L413 NwaCegarLoop]: 718 mSDtfsCounter, 5 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 05:32:58,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1419 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 05:32:58,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7934 states. [2023-04-01 05:32:58,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7934 to 7754. [2023-04-01 05:32:58,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7754 states, 5396 states have (on average 1.4119718309859155) internal successors, (7619), 5519 states have internal predecessors, (7619), 1514 states have call successors, (1514), 782 states have call predecessors, (1514), 843 states have return successors, (3611), 1518 states have call predecessors, (3611), 1477 states have call successors, (3611) [2023-04-01 05:32:58,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7754 states to 7754 states and 12744 transitions. [2023-04-01 05:32:58,622 INFO L78 Accepts]: Start accepts. Automaton has 7754 states and 12744 transitions. Word has length 155 [2023-04-01 05:32:58,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:32:58,622 INFO L495 AbstractCegarLoop]: Abstraction has 7754 states and 12744 transitions. [2023-04-01 05:32:58,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-04-01 05:32:58,622 INFO L276 IsEmpty]: Start isEmpty. Operand 7754 states and 12744 transitions. [2023-04-01 05:32:58,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-04-01 05:32:58,625 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:32:58,625 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:32:58,649 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-04-01 05:32:58,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-04-01 05:32:58,834 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:32:58,835 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:32:58,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1040890713, now seen corresponding path program 1 times [2023-04-01 05:32:58,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:32:58,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529107202] [2023-04-01 05:32:58,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:32:58,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:32:58,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:32:59,140 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-04-01 05:32:59,141 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:32:59,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529107202] [2023-04-01 05:32:59,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529107202] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 05:32:59,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076059666] [2023-04-01 05:32:59,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:32:59,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:32:59,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:32:59,158 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 05:32:59,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-01 05:32:59,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:32:59,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 2906 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 05:32:59,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:32:59,649 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-01 05:32:59,650 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 05:32:59,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076059666] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:32:59,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 05:32:59,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-04-01 05:32:59,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173607074] [2023-04-01 05:32:59,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:32:59,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 05:32:59,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:32:59,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 05:32:59,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-04-01 05:32:59,651 INFO L87 Difference]: Start difference. First operand 7754 states and 12744 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-04-01 05:33:00,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:33:00,964 INFO L93 Difference]: Finished difference Result 17754 states and 31254 transitions. [2023-04-01 05:33:00,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 05:33:00,964 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 156 [2023-04-01 05:33:00,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:33:01,010 INFO L225 Difference]: With dead ends: 17754 [2023-04-01 05:33:01,010 INFO L226 Difference]: Without dead ends: 11018 [2023-04-01 05:33:01,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-04-01 05:33:01,043 INFO L413 NwaCegarLoop]: 808 mSDtfsCounter, 742 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 2399 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-01 05:33:01,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [744 Valid, 2399 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-01 05:33:01,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11018 states. [2023-04-01 05:33:01,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11018 to 10886. [2023-04-01 05:33:01,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10886 states, 7580 states have (on average 1.4094986807387864) internal successors, (10684), 7750 states have internal predecessors, (10684), 2117 states have call successors, (2117), 1100 states have call predecessors, (2117), 1188 states have return successors, (6023), 2127 states have call predecessors, (6023), 2066 states have call successors, (6023) [2023-04-01 05:33:01,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10886 states to 10886 states and 18824 transitions. [2023-04-01 05:33:01,668 INFO L78 Accepts]: Start accepts. Automaton has 10886 states and 18824 transitions. Word has length 156 [2023-04-01 05:33:01,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:33:01,668 INFO L495 AbstractCegarLoop]: Abstraction has 10886 states and 18824 transitions. [2023-04-01 05:33:01,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-04-01 05:33:01,669 INFO L276 IsEmpty]: Start isEmpty. Operand 10886 states and 18824 transitions. [2023-04-01 05:33:01,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-04-01 05:33:01,672 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:33:01,672 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:33:01,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-04-01 05:33:01,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:33:01,881 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:33:01,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:33:01,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1015659645, now seen corresponding path program 1 times [2023-04-01 05:33:01,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:33:01,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621516113] [2023-04-01 05:33:01,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:33:01,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:33:01,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:33:02,190 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-04-01 05:33:02,190 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:33:02,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621516113] [2023-04-01 05:33:02,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621516113] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 05:33:02,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379957438] [2023-04-01 05:33:02,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:33:02,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:33:02,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:33:02,205 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 05:33:02,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-04-01 05:33:02,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:33:02,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 2907 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 05:33:02,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:33:02,807 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-01 05:33:02,807 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 05:33:02,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379957438] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:33:02,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 05:33:02,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-04-01 05:33:02,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21726071] [2023-04-01 05:33:02,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:33:02,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 05:33:02,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:33:02,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 05:33:02,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-04-01 05:33:02,809 INFO L87 Difference]: Start difference. First operand 10886 states and 18824 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-04-01 05:33:04,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:33:04,093 INFO L93 Difference]: Finished difference Result 23478 states and 42539 transitions. [2023-04-01 05:33:04,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 05:33:04,094 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 157 [2023-04-01 05:33:04,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:33:04,162 INFO L225 Difference]: With dead ends: 23478 [2023-04-01 05:33:04,162 INFO L226 Difference]: Without dead ends: 13656 [2023-04-01 05:33:04,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-04-01 05:33:04,212 INFO L413 NwaCegarLoop]: 829 mSDtfsCounter, 760 mSDsluCounter, 1620 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 2449 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-01 05:33:04,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [762 Valid, 2449 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 996 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-01 05:33:04,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13656 states. [2023-04-01 05:33:05,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13656 to 13207. [2023-04-01 05:33:05,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13207 states, 9106 states have (on average 1.406325499670547) internal successors, (12806), 9316 states have internal predecessors, (12806), 2640 states have call successors, (2640), 1365 states have call predecessors, (2640), 1460 states have return successors, (7973), 2643 states have call predecessors, (7973), 2579 states have call successors, (7973) [2023-04-01 05:33:05,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13207 states to 13207 states and 23419 transitions. [2023-04-01 05:33:05,140 INFO L78 Accepts]: Start accepts. Automaton has 13207 states and 23419 transitions. Word has length 157 [2023-04-01 05:33:05,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:33:05,140 INFO L495 AbstractCegarLoop]: Abstraction has 13207 states and 23419 transitions. [2023-04-01 05:33:05,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-04-01 05:33:05,140 INFO L276 IsEmpty]: Start isEmpty. Operand 13207 states and 23419 transitions. [2023-04-01 05:33:05,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-04-01 05:33:05,143 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:33:05,143 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:33:05,164 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-04-01 05:33:05,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-04-01 05:33:05,353 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:33:05,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:33:05,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1147990690, now seen corresponding path program 1 times [2023-04-01 05:33:05,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:33:05,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023921378] [2023-04-01 05:33:05,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:33:05,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:33:05,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:33:05,511 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-04-01 05:33:05,512 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:33:05,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023921378] [2023-04-01 05:33:05,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023921378] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 05:33:05,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796207426] [2023-04-01 05:33:05,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:33:05,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:33:05,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:33:05,526 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 05:33:05,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-04-01 05:33:06,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:33:06,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 2905 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-01 05:33:06,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:33:06,111 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-01 05:33:06,111 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 05:33:06,360 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-04-01 05:33:06,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796207426] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 05:33:06,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1943951840] [2023-04-01 05:33:06,385 INFO L159 IcfgInterpreter]: Started Sifa with 134 locations of interest [2023-04-01 05:33:06,385 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 05:33:06,388 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 05:33:06,392 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 05:33:06,392 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 05:33:08,837 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 178 for LOIs [2023-04-01 05:33:09,264 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 230 for LOIs [2023-04-01 05:33:11,923 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 230 for LOIs [2023-04-01 05:33:12,329 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 230 for LOIs [2023-04-01 05:33:15,685 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 248063 conjuctions. This might take some time...