/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/product-lines/elevator_spec1_product29.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 05:34:45,720 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 05:34:45,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 05:34:45,754 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 05:34:45,754 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 05:34:45,756 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 05:34:45,759 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 05:34:45,761 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 05:34:45,762 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 05:34:45,766 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 05:34:45,768 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 05:34:45,769 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 05:34:45,769 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 05:34:45,771 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 05:34:45,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 05:34:45,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 05:34:45,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 05:34:45,774 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 05:34:45,776 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 05:34:45,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 05:34:45,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 05:34:45,781 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 05:34:45,782 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 05:34:45,782 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 05:34:45,789 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 05:34:45,789 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 05:34:45,789 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 05:34:45,790 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 05:34:45,790 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 05:34:45,791 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 05:34:45,791 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 05:34:45,791 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 05:34:45,793 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 05:34:45,793 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 05:34:45,793 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 05:34:45,793 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 05:34:45,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 05:34:45,794 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 05:34:45,794 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 05:34:45,794 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 05:34:45,795 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 05:34:45,796 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 05:34:45,818 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 05:34:45,819 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 05:34:45,819 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 05:34:45,819 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 05:34:45,820 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 05:34:45,820 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 05:34:45,820 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 05:34:45,820 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 05:34:45,820 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 05:34:45,820 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 05:34:45,821 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 05:34:45,821 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 05:34:45,821 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 05:34:45,821 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 05:34:45,821 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 05:34:45,821 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 05:34:45,821 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 05:34:45,821 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 05:34:45,822 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 05:34:45,822 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 05:34:45,822 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 05:34:45,822 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 05:34:45,823 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 05:34:45,823 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 05:34:45,823 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 05:34:45,823 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 05:34:45,823 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 05:34:45,823 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 05:34:45,823 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 05:34:45,823 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 05:34:45,823 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 05:34:45,823 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 05:34:45,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 05:34:45,824 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 05:34:45,824 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 05:34:45,824 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 05:34:45,824 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 05:34:45,824 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 05:34:45,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 05:34:45,824 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 05:34:45,824 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 05:34:45,824 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 05:34:45,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 05:34:46,007 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 05:34:46,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 05:34:46,010 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 05:34:46,010 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 05:34:46,011 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product29.cil.c [2023-04-01 05:34:47,119 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 05:34:47,416 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 05:34:47,419 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product29.cil.c [2023-04-01 05:34:47,436 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9fb6c876/696891cfd094485fa06935f923ce91a0/FLAG010793aa8 [2023-04-01 05:34:47,445 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9fb6c876/696891cfd094485fa06935f923ce91a0 [2023-04-01 05:34:47,447 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 05:34:47,448 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 05:34:47,449 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 05:34:47,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 05:34:47,452 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 05:34:47,452 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 05:34:47" (1/1) ... [2023-04-01 05:34:47,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55d56a07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:34:47, skipping insertion in model container [2023-04-01 05:34:47,457 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 05:34:47" (1/1) ... [2023-04-01 05:34:47,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 05:34:47,523 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 05:34:47,708 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product29.cil.c[4117,4130] [2023-04-01 05:34:48,004 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 05:34:48,016 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 05:34:48,044 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product29.cil.c[4117,4130] [2023-04-01 05:34:48,146 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 05:34:48,169 INFO L208 MainTranslator]: Completed translation [2023-04-01 05:34:48,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:34:48 WrapperNode [2023-04-01 05:34:48,169 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 05:34:48,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 05:34:48,170 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 05:34:48,170 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 05:34:48,178 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:34:48" (1/1) ... [2023-04-01 05:34:48,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:34:48" (1/1) ... [2023-04-01 05:34:48,206 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:34:48" (1/1) ... [2023-04-01 05:34:48,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:34:48" (1/1) ... [2023-04-01 05:34:48,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:34:48" (1/1) ... [2023-04-01 05:34:48,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:34:48" (1/1) ... [2023-04-01 05:34:48,277 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:34:48" (1/1) ... [2023-04-01 05:34:48,283 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:34:48" (1/1) ... [2023-04-01 05:34:48,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 05:34:48,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 05:34:48,293 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 05:34:48,293 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 05:34:48,303 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:34:48" (1/1) ... [2023-04-01 05:34:48,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 05:34:48,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:34:48,344 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 05:34:48,361 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 05:34:48,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 05:34:48,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 05:34:48,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-01 05:34:48,391 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 05:34:48,393 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-04-01 05:34:48,393 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-04-01 05:34:48,393 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-04-01 05:34:48,393 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-01 05:34:48,393 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2023-04-01 05:34:48,393 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2023-04-01 05:34:48,393 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2023-04-01 05:34:48,393 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2023-04-01 05:34:48,393 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2023-04-01 05:34:48,393 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-04-01 05:34:48,393 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-04-01 05:34:48,393 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2023-04-01 05:34:48,394 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-04-01 05:34:48,394 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-04-01 05:34:48,394 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-04-01 05:34:48,394 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-04-01 05:34:48,394 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2023-04-01 05:34:48,394 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-04-01 05:34:48,394 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2023-04-01 05:34:48,394 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-04-01 05:34:48,394 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2023-04-01 05:34:48,394 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2023-04-01 05:34:48,394 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-04-01 05:34:48,395 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2023-04-01 05:34:48,395 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-01 05:34:48,395 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2023-04-01 05:34:48,395 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2023-04-01 05:34:48,395 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2023-04-01 05:34:48,395 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-01 05:34:48,395 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2023-04-01 05:34:48,395 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-01 05:34:48,395 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-01 05:34:48,395 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 05:34:48,395 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-01 05:34:48,395 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-01 05:34:48,395 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-01 05:34:48,396 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-01 05:34:48,396 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2023-04-01 05:34:48,396 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2023-04-01 05:34:48,396 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2023-04-01 05:34:48,396 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2023-04-01 05:34:48,396 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-04-01 05:34:48,396 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2023-04-01 05:34:48,396 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-04-01 05:34:48,396 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2023-04-01 05:34:48,396 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2023-04-01 05:34:48,396 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-04-01 05:34:48,396 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-04-01 05:34:48,396 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2023-04-01 05:34:48,396 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-04-01 05:34:48,397 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-04-01 05:34:48,397 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-04-01 05:34:48,397 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-04-01 05:34:48,397 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2023-04-01 05:34:48,397 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2023-04-01 05:34:48,397 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2023-04-01 05:34:48,397 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2023-04-01 05:34:48,397 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-04-01 05:34:48,397 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2023-04-01 05:34:48,397 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-04-01 05:34:48,397 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2023-04-01 05:34:48,397 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2023-04-01 05:34:48,397 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-04-01 05:34:48,397 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2023-04-01 05:34:48,398 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-01 05:34:48,398 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2023-04-01 05:34:48,398 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2023-04-01 05:34:48,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-01 05:34:48,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-01 05:34:48,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-01 05:34:48,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-01 05:34:48,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-01 05:34:48,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-01 05:34:48,398 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-01 05:34:48,398 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 05:34:48,398 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 05:34:48,398 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 05:34:48,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 05:34:48,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 05:34:48,399 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-04-01 05:34:48,399 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-04-01 05:34:48,399 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-04-01 05:34:48,399 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-01 05:34:48,399 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-04-01 05:34:48,399 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-04-01 05:34:48,399 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2023-04-01 05:34:48,399 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2023-04-01 05:34:48,399 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2023-04-01 05:34:48,399 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2023-04-01 05:34:48,399 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-04-01 05:34:48,399 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-04-01 05:34:48,399 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2023-04-01 05:34:48,399 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-04-01 05:34:48,400 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-04-01 05:34:48,400 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-04-01 05:34:48,400 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-04-01 05:34:48,400 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2023-04-01 05:34:48,400 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 05:34:48,400 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2023-04-01 05:34:48,400 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-04-01 05:34:48,400 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2023-04-01 05:34:48,400 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-04-01 05:34:48,400 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2023-04-01 05:34:48,400 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2023-04-01 05:34:48,400 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-04-01 05:34:48,400 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-01 05:34:48,400 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2023-04-01 05:34:48,401 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2023-04-01 05:34:48,401 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-04-01 05:34:48,401 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-01 05:34:48,401 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2023-04-01 05:34:48,401 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2023-04-01 05:34:48,401 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2023-04-01 05:34:48,401 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2023-04-01 05:34:48,401 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2023-04-01 05:34:48,401 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-01 05:34:48,401 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2023-04-01 05:34:48,401 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-01 05:34:48,401 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-01 05:34:48,401 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-01 05:34:48,402 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-01 05:34:48,402 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-01 05:34:48,402 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-01 05:34:48,402 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 05:34:48,402 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-01 05:34:48,402 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2023-04-01 05:34:48,402 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2023-04-01 05:34:48,402 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2023-04-01 05:34:48,416 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-01 05:34:48,417 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-04-01 05:34:48,417 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2023-04-01 05:34:48,417 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2023-04-01 05:34:48,417 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-04-01 05:34:48,417 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2023-04-01 05:34:48,417 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2023-04-01 05:34:48,417 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2023-04-01 05:34:48,417 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-04-01 05:34:48,417 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-04-01 05:34:48,417 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2023-04-01 05:34:48,417 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-04-01 05:34:48,417 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2023-04-01 05:34:48,418 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2023-04-01 05:34:48,418 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-04-01 05:34:48,418 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-04-01 05:34:48,418 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2023-04-01 05:34:48,418 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2023-04-01 05:34:48,418 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-04-01 05:34:48,418 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2023-04-01 05:34:48,418 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2023-04-01 05:34:48,418 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 05:34:48,418 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 05:34:48,418 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-01 05:34:48,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 05:34:48,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 05:34:48,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 05:34:48,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 05:34:48,419 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-01 05:34:48,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 05:34:48,419 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-01 05:34:48,419 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-01 05:34:48,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 05:34:48,419 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-01 05:34:48,419 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-01 05:34:48,419 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-01 05:34:48,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 05:34:48,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 05:34:48,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 05:34:48,672 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 05:34:48,675 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 05:34:49,741 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 05:34:50,464 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 05:34:50,464 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-04-01 05:34:50,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 05:34:50 BoogieIcfgContainer [2023-04-01 05:34:50,468 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 05:34:50,470 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 05:34:50,470 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 05:34:50,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 05:34:50,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 05:34:47" (1/3) ... [2023-04-01 05:34:50,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b94c757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 05:34:50, skipping insertion in model container [2023-04-01 05:34:50,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:34:48" (2/3) ... [2023-04-01 05:34:50,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b94c757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 05:34:50, skipping insertion in model container [2023-04-01 05:34:50,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 05:34:50" (3/3) ... [2023-04-01 05:34:50,474 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product29.cil.c [2023-04-01 05:34:50,488 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 05:34:50,489 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 05:34:50,545 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 05:34:50,551 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;@53cb9ca2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 05:34:50,551 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 05:34:50,558 INFO L276 IsEmpty]: Start isEmpty. Operand has 575 states, 335 states have (on average 1.4865671641791045) internal successors, (498), 362 states have internal predecessors, (498), 175 states have call successors, (175), 52 states have call predecessors, (175), 52 states have return successors, (175), 166 states have call predecessors, (175), 175 states have call successors, (175) [2023-04-01 05:34:50,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-04-01 05:34:50,585 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:34:50,586 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:34:50,586 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:34:50,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:34:50,591 INFO L85 PathProgramCache]: Analyzing trace with hash -580777951, now seen corresponding path program 1 times [2023-04-01 05:34:50,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:34:50,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435579431] [2023-04-01 05:34:50,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:34:50,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:34:50,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:34:51,142 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-01 05:34:51,143 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:34:51,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435579431] [2023-04-01 05:34:51,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435579431] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:34:51,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:34:51,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-01 05:34:51,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295873752] [2023-04-01 05:34:51,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:34:51,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-01 05:34:51,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:34:51,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-01 05:34:51,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 05:34:51,182 INFO L87 Difference]: Start difference. First operand has 575 states, 335 states have (on average 1.4865671641791045) internal successors, (498), 362 states have internal predecessors, (498), 175 states have call successors, (175), 52 states have call predecessors, (175), 52 states have return successors, (175), 166 states have call predecessors, (175), 175 states have call successors, (175) Second operand has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2023-04-01 05:34:51,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:34:51,293 INFO L93 Difference]: Finished difference Result 484 states and 716 transitions. [2023-04-01 05:34:51,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-01 05:34:51,295 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) Word has length 129 [2023-04-01 05:34:51,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:34:51,307 INFO L225 Difference]: With dead ends: 484 [2023-04-01 05:34:51,307 INFO L226 Difference]: Without dead ends: 450 [2023-04-01 05:34:51,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 05:34:51,312 INFO L413 NwaCegarLoop]: 635 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 05:34:51,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 635 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 05:34:51,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2023-04-01 05:34:51,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 450. [2023-04-01 05:34:51,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 282 states have (on average 1.5212765957446808) internal successors, (429), 301 states have internal predecessors, (429), 122 states have call successors, (122), 49 states have call predecessors, (122), 45 states have return successors, (114), 111 states have call predecessors, (114), 114 states have call successors, (114) [2023-04-01 05:34:51,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 665 transitions. [2023-04-01 05:34:51,382 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 665 transitions. Word has length 129 [2023-04-01 05:34:51,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:34:51,383 INFO L495 AbstractCegarLoop]: Abstraction has 450 states and 665 transitions. [2023-04-01 05:34:51,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2023-04-01 05:34:51,384 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 665 transitions. [2023-04-01 05:34:51,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-04-01 05:34:51,388 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:34:51,388 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:34:51,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 05:34:51,388 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:34:51,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:34:51,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1586197701, now seen corresponding path program 1 times [2023-04-01 05:34:51,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:34:51,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747913842] [2023-04-01 05:34:51,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:34:51,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:34:51,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:34:52,022 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-01 05:34:52,022 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:34:52,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747913842] [2023-04-01 05:34:52,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747913842] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:34:52,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:34:52,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 05:34:52,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086879819] [2023-04-01 05:34:52,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:34:52,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 05:34:52,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:34:52,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 05:34:52,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 05:34:52,025 INFO L87 Difference]: Start difference. First operand 450 states and 665 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 6 states have call successors, (30), 4 states have call predecessors, (30), 5 states have return successors, (26), 7 states have call predecessors, (26), 5 states have call successors, (26) [2023-04-01 05:34:54,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:34:54,961 INFO L93 Difference]: Finished difference Result 1389 states and 2118 transitions. [2023-04-01 05:34:54,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-01 05:34:54,961 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 6 states have call successors, (30), 4 states have call predecessors, (30), 5 states have return successors, (26), 7 states have call predecessors, (26), 5 states have call successors, (26) Word has length 130 [2023-04-01 05:34:54,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:34:54,972 INFO L225 Difference]: With dead ends: 1389 [2023-04-01 05:34:54,972 INFO L226 Difference]: Without dead ends: 992 [2023-04-01 05:34:54,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2023-04-01 05:34:54,984 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 1811 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 5291 mSolverCounterSat, 588 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1888 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 5879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 588 IncrementalHoareTripleChecker+Valid, 5291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-04-01 05:34:54,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1888 Valid, 907 Invalid, 5879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [588 Valid, 5291 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-04-01 05:34:54,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2023-04-01 05:34:55,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 960. [2023-04-01 05:34:55,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 634 states have (on average 1.553627760252366) internal successors, (985), 665 states have internal predecessors, (985), 238 states have call successors, (238), 86 states have call predecessors, (238), 87 states have return successors, (242), 232 states have call predecessors, (242), 230 states have call successors, (242) [2023-04-01 05:34:55,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1465 transitions. [2023-04-01 05:34:55,055 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1465 transitions. Word has length 130 [2023-04-01 05:34:55,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:34:55,056 INFO L495 AbstractCegarLoop]: Abstraction has 960 states and 1465 transitions. [2023-04-01 05:34:55,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 6 states have call successors, (30), 4 states have call predecessors, (30), 5 states have return successors, (26), 7 states have call predecessors, (26), 5 states have call successors, (26) [2023-04-01 05:34:55,056 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1465 transitions. [2023-04-01 05:34:55,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-04-01 05:34:55,058 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:34:55,058 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:34:55,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 05:34:55,059 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:34:55,059 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:34:55,059 INFO L85 PathProgramCache]: Analyzing trace with hash 810051950, now seen corresponding path program 1 times [2023-04-01 05:34:55,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:34:55,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207926018] [2023-04-01 05:34:55,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:34:55,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:34:55,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:34:55,455 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-01 05:34:55,455 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:34:55,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207926018] [2023-04-01 05:34:55,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207926018] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:34:55,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:34:55,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 05:34:55,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250793950] [2023-04-01 05:34:55,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:34:55,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 05:34:55,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:34:55,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 05:34:55,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-01 05:34:55,457 INFO L87 Difference]: Start difference. First operand 960 states and 1465 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (27), 4 states have call predecessors, (27), 2 states have call successors, (27) [2023-04-01 05:34:55,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:34:55,768 INFO L93 Difference]: Finished difference Result 1529 states and 2350 transitions. [2023-04-01 05:34:55,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 05:34:55,768 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (27), 4 states have call predecessors, (27), 2 states have call successors, (27) Word has length 135 [2023-04-01 05:34:55,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:34:55,773 INFO L225 Difference]: With dead ends: 1529 [2023-04-01 05:34:55,773 INFO L226 Difference]: Without dead ends: 997 [2023-04-01 05:34:55,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 05:34:55,776 INFO L413 NwaCegarLoop]: 634 mSDtfsCounter, 6 mSDsluCounter, 3123 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3757 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 05:34:55,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 3757 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 05:34:55,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2023-04-01 05:34:55,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 981. [2023-04-01 05:34:55,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 649 states have (on average 1.5408320493066257) internal successors, (1000), 680 states have internal predecessors, (1000), 238 states have call successors, (238), 86 states have call predecessors, (238), 93 states have return successors, (257), 238 states have call predecessors, (257), 230 states have call successors, (257) [2023-04-01 05:34:55,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1495 transitions. [2023-04-01 05:34:55,878 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1495 transitions. Word has length 135 [2023-04-01 05:34:55,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:34:55,879 INFO L495 AbstractCegarLoop]: Abstraction has 981 states and 1495 transitions. [2023-04-01 05:34:55,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (27), 4 states have call predecessors, (27), 2 states have call successors, (27) [2023-04-01 05:34:55,879 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1495 transitions. [2023-04-01 05:34:55,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-04-01 05:34:55,895 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:34:55,895 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:34:55,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 05:34:55,895 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:34:55,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:34:55,896 INFO L85 PathProgramCache]: Analyzing trace with hash -2018293874, now seen corresponding path program 1 times [2023-04-01 05:34:55,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:34:55,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707387841] [2023-04-01 05:34:55,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:34:55,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:34:55,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:34:56,271 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-01 05:34:56,272 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:34:56,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707387841] [2023-04-01 05:34:56,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707387841] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:34:56,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:34:56,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 05:34:56,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93495610] [2023-04-01 05:34:56,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:34:56,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 05:34:56,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:34:56,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 05:34:56,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-01 05:34:56,273 INFO L87 Difference]: Start difference. First operand 981 states and 1495 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (27), 4 states have call predecessors, (27), 2 states have call successors, (27) [2023-04-01 05:34:56,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:34:56,460 INFO L93 Difference]: Finished difference Result 1558 states and 2388 transitions. [2023-04-01 05:34:56,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 05:34:56,461 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (27), 4 states have call predecessors, (27), 2 states have call successors, (27) Word has length 135 [2023-04-01 05:34:56,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:34:56,466 INFO L225 Difference]: With dead ends: 1558 [2023-04-01 05:34:56,466 INFO L226 Difference]: Without dead ends: 1012 [2023-04-01 05:34:56,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 05:34:56,474 INFO L413 NwaCegarLoop]: 634 mSDtfsCounter, 6 mSDsluCounter, 3123 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3757 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 05:34:56,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 3757 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 05:34:56,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2023-04-01 05:34:56,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 984. [2023-04-01 05:34:56,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 652 states have (on average 1.5383435582822085) internal successors, (1003), 680 states have internal predecessors, (1003), 238 states have call successors, (238), 86 states have call predecessors, (238), 93 states have return successors, (257), 241 states have call predecessors, (257), 230 states have call successors, (257) [2023-04-01 05:34:56,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1498 transitions. [2023-04-01 05:34:56,519 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1498 transitions. Word has length 135 [2023-04-01 05:34:56,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:34:56,521 INFO L495 AbstractCegarLoop]: Abstraction has 984 states and 1498 transitions. [2023-04-01 05:34:56,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (27), 4 states have call predecessors, (27), 2 states have call successors, (27) [2023-04-01 05:34:56,521 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1498 transitions. [2023-04-01 05:34:56,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-04-01 05:34:56,525 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:34:56,525 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:34:56,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 05:34:56,525 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:34:56,526 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:34:56,526 INFO L85 PathProgramCache]: Analyzing trace with hash -339726330, now seen corresponding path program 1 times [2023-04-01 05:34:56,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:34:56,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141346058] [2023-04-01 05:34:56,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:34:56,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:34:56,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:34:56,817 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-01 05:34:56,817 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:34:56,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141346058] [2023-04-01 05:34:56,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141346058] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:34:56,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:34:56,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 05:34:56,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87195893] [2023-04-01 05:34:56,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:34:56,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 05:34:56,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:34:56,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 05:34:56,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-01 05:34:56,820 INFO L87 Difference]: Start difference. First operand 984 states and 1498 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (27), 4 states have call predecessors, (27), 2 states have call successors, (27) [2023-04-01 05:34:56,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:34:56,988 INFO L93 Difference]: Finished difference Result 1563 states and 2393 transitions. [2023-04-01 05:34:56,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 05:34:56,988 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (27), 4 states have call predecessors, (27), 2 states have call successors, (27) Word has length 134 [2023-04-01 05:34:56,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:34:56,993 INFO L225 Difference]: With dead ends: 1563 [2023-04-01 05:34:56,993 INFO L226 Difference]: Without dead ends: 1015 [2023-04-01 05:34:56,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 05:34:56,996 INFO L413 NwaCegarLoop]: 629 mSDtfsCounter, 7 mSDsluCounter, 3104 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 3733 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 05:34:56,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 3733 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 05:34:56,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2023-04-01 05:34:57,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 987. [2023-04-01 05:34:57,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 987 states, 655 states have (on average 1.53587786259542) internal successors, (1006), 680 states have internal predecessors, (1006), 238 states have call successors, (238), 86 states have call predecessors, (238), 93 states have return successors, (257), 244 states have call predecessors, (257), 230 states have call successors, (257) [2023-04-01 05:34:57,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 987 states to 987 states and 1501 transitions. [2023-04-01 05:34:57,033 INFO L78 Accepts]: Start accepts. Automaton has 987 states and 1501 transitions. Word has length 134 [2023-04-01 05:34:57,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:34:57,034 INFO L495 AbstractCegarLoop]: Abstraction has 987 states and 1501 transitions. [2023-04-01 05:34:57,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (27), 4 states have call predecessors, (27), 2 states have call successors, (27) [2023-04-01 05:34:57,035 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states and 1501 transitions. [2023-04-01 05:34:57,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-04-01 05:34:57,037 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:34:57,037 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:34:57,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 05:34:57,037 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:34:57,038 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:34:57,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1623490346, now seen corresponding path program 1 times [2023-04-01 05:34:57,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:34:57,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191800451] [2023-04-01 05:34:57,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:34:57,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:34:57,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:34:57,541 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-01 05:34:57,541 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:34:57,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191800451] [2023-04-01 05:34:57,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191800451] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:34:57,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:34:57,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-01 05:34:57,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340187500] [2023-04-01 05:34:57,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:34:57,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 05:34:57,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:34:57,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 05:34:57,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-04-01 05:34:57,543 INFO L87 Difference]: Start difference. First operand 987 states and 1501 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 7 states have call successors, (31), 5 states have call predecessors, (31), 4 states have return successors, (27), 8 states have call predecessors, (27), 6 states have call successors, (27) [2023-04-01 05:34:59,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:34:59,648 INFO L93 Difference]: Finished difference Result 2103 states and 3222 transitions. [2023-04-01 05:34:59,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 05:34:59,649 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 7 states have call successors, (31), 5 states have call predecessors, (31), 4 states have return successors, (27), 8 states have call predecessors, (27), 6 states have call successors, (27) Word has length 139 [2023-04-01 05:34:59,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:34:59,663 INFO L225 Difference]: With dead ends: 2103 [2023-04-01 05:34:59,663 INFO L226 Difference]: Without dead ends: 1428 [2023-04-01 05:34:59,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-04-01 05:34:59,667 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 1489 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 3559 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1671 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 4044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 3559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-04-01 05:34:59,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1671 Valid, 449 Invalid, 4044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 3559 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-04-01 05:34:59,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2023-04-01 05:34:59,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1378. [2023-04-01 05:34:59,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1378 states, 898 states have (on average 1.4910913140311803) internal successors, (1339), 938 states have internal predecessors, (1339), 341 states have call successors, (341), 127 states have call predecessors, (341), 138 states have return successors, (378), 348 states have call predecessors, (378), 333 states have call successors, (378) [2023-04-01 05:34:59,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 2058 transitions. [2023-04-01 05:34:59,770 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 2058 transitions. Word has length 139 [2023-04-01 05:34:59,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:34:59,771 INFO L495 AbstractCegarLoop]: Abstraction has 1378 states and 2058 transitions. [2023-04-01 05:34:59,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 7 states have call successors, (31), 5 states have call predecessors, (31), 4 states have return successors, (27), 8 states have call predecessors, (27), 6 states have call successors, (27) [2023-04-01 05:34:59,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 2058 transitions. [2023-04-01 05:34:59,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-04-01 05:34:59,773 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:34:59,773 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:34:59,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 05:34:59,774 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:34:59,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:34:59,774 INFO L85 PathProgramCache]: Analyzing trace with hash 691187026, now seen corresponding path program 1 times [2023-04-01 05:34:59,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:34:59,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241475488] [2023-04-01 05:34:59,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:34:59,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:34:59,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:35:00,161 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-01 05:35:00,161 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:35:00,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241475488] [2023-04-01 05:35:00,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241475488] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:35:00,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:35:00,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 05:35:00,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279156899] [2023-04-01 05:35:00,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:35:00,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 05:35:00,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:35:00,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 05:35:00,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-01 05:35:00,163 INFO L87 Difference]: Start difference. First operand 1378 states and 2058 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 5 states have call successors, (31), 4 states have call predecessors, (31), 4 states have return successors, (27), 6 states have call predecessors, (27), 4 states have call successors, (27) [2023-04-01 05:35:02,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:35:02,671 INFO L93 Difference]: Finished difference Result 5627 states and 8794 transitions. [2023-04-01 05:35:02,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 05:35:02,672 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 5 states have call successors, (31), 4 states have call predecessors, (31), 4 states have return successors, (27), 6 states have call predecessors, (27), 4 states have call successors, (27) Word has length 142 [2023-04-01 05:35:02,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:35:02,701 INFO L225 Difference]: With dead ends: 5627 [2023-04-01 05:35:02,701 INFO L226 Difference]: Without dead ends: 4303 [2023-04-01 05:35:02,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-04-01 05:35:02,710 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 2210 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 3129 mSolverCounterSat, 1020 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2295 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 4149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1020 IncrementalHoareTripleChecker+Valid, 3129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-04-01 05:35:02,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2295 Valid, 1041 Invalid, 4149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1020 Valid, 3129 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-04-01 05:35:02,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4303 states. [2023-04-01 05:35:02,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4303 to 3940. [2023-04-01 05:35:02,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3940 states, 2602 states have (on average 1.4984627209838586) internal successors, (3899), 2731 states have internal predecessors, (3899), 958 states have call successors, (958), 331 states have call predecessors, (958), 379 states have return successors, (1198), 961 states have call predecessors, (1198), 950 states have call successors, (1198) [2023-04-01 05:35:02,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3940 states to 3940 states and 6055 transitions. [2023-04-01 05:35:02,946 INFO L78 Accepts]: Start accepts. Automaton has 3940 states and 6055 transitions. Word has length 142 [2023-04-01 05:35:02,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:35:02,948 INFO L495 AbstractCegarLoop]: Abstraction has 3940 states and 6055 transitions. [2023-04-01 05:35:02,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 5 states have call successors, (31), 4 states have call predecessors, (31), 4 states have return successors, (27), 6 states have call predecessors, (27), 4 states have call successors, (27) [2023-04-01 05:35:02,948 INFO L276 IsEmpty]: Start isEmpty. Operand 3940 states and 6055 transitions. [2023-04-01 05:35:02,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-04-01 05:35:02,950 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:35:02,951 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:35:02,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-01 05:35:02,951 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:35:02,952 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:35:02,952 INFO L85 PathProgramCache]: Analyzing trace with hash 364961746, now seen corresponding path program 1 times [2023-04-01 05:35:02,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:35:02,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678309874] [2023-04-01 05:35:02,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:35:02,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:35:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:35:03,415 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-01 05:35:03,415 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:35:03,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678309874] [2023-04-01 05:35:03,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678309874] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:35:03,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:35:03,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 05:35:03,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583658191] [2023-04-01 05:35:03,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:35:03,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 05:35:03,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:35:03,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 05:35:03,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-01 05:35:03,417 INFO L87 Difference]: Start difference. First operand 3940 states and 6055 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 5 states have call successors, (32), 4 states have call predecessors, (32), 4 states have return successors, (28), 5 states have call predecessors, (28), 4 states have call successors, (28) [2023-04-01 05:35:05,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:35:05,534 INFO L93 Difference]: Finished difference Result 7028 states and 10842 transitions. [2023-04-01 05:35:05,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-01 05:35:05,549 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 5 states have call successors, (32), 4 states have call predecessors, (32), 4 states have return successors, (28), 5 states have call predecessors, (28), 4 states have call successors, (28) Word has length 144 [2023-04-01 05:35:05,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:35:05,584 INFO L225 Difference]: With dead ends: 7028 [2023-04-01 05:35:05,585 INFO L226 Difference]: Without dead ends: 4110 [2023-04-01 05:35:05,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-04-01 05:35:05,613 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 1069 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 3370 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1157 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 3799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 3370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-04-01 05:35:05,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1157 Valid, 521 Invalid, 3799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 3370 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-04-01 05:35:05,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4110 states. [2023-04-01 05:35:05,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4110 to 4024. [2023-04-01 05:35:05,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4024 states, 2657 states have (on average 1.4926608957470833) internal successors, (3966), 2798 states have internal predecessors, (3966), 962 states have call successors, (962), 346 states have call predecessors, (962), 404 states have return successors, (1233), 963 states have call predecessors, (1233), 954 states have call successors, (1233) [2023-04-01 05:35:05,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4024 states to 4024 states and 6161 transitions. [2023-04-01 05:35:05,824 INFO L78 Accepts]: Start accepts. Automaton has 4024 states and 6161 transitions. Word has length 144 [2023-04-01 05:35:05,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:35:05,825 INFO L495 AbstractCegarLoop]: Abstraction has 4024 states and 6161 transitions. [2023-04-01 05:35:05,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 5 states have call successors, (32), 4 states have call predecessors, (32), 4 states have return successors, (28), 5 states have call predecessors, (28), 4 states have call successors, (28) [2023-04-01 05:35:05,825 INFO L276 IsEmpty]: Start isEmpty. Operand 4024 states and 6161 transitions. [2023-04-01 05:35:05,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-04-01 05:35:05,828 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:35:05,828 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:35:05,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-01 05:35:05,828 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:35:05,828 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:35:05,829 INFO L85 PathProgramCache]: Analyzing trace with hash -525186705, now seen corresponding path program 1 times [2023-04-01 05:35:05,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:35:05,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705269441] [2023-04-01 05:35:05,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:35:05,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:35:05,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:35:05,982 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 05:35:05,982 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:35:05,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705269441] [2023-04-01 05:35:05,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705269441] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:35:05,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:35:05,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 05:35:05,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204590686] [2023-04-01 05:35:05,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:35:05,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 05:35:05,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:35:05,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 05:35:05,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 05:35:05,984 INFO L87 Difference]: Start difference. First operand 4024 states and 6161 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 4 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2023-04-01 05:35:06,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:35:06,308 INFO L93 Difference]: Finished difference Result 7704 states and 12220 transitions. [2023-04-01 05:35:06,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-01 05:35:06,309 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), 4 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) Word has length 148 [2023-04-01 05:35:06,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:35:06,331 INFO L225 Difference]: With dead ends: 7704 [2023-04-01 05:35:06,332 INFO L226 Difference]: Without dead ends: 4456 [2023-04-01 05:35:06,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 05:35:06,348 INFO L413 NwaCegarLoop]: 669 mSDtfsCounter, 216 mSDsluCounter, 1042 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 1711 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 05:35:06,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 1711 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 05:35:06,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4456 states. [2023-04-01 05:35:06,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4456 to 4456. [2023-04-01 05:35:06,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4456 states, 3071 states have (on average 1.5076522305437967) internal successors, (4630), 3230 states have internal predecessors, (4630), 962 states have call successors, (962), 346 states have call predecessors, (962), 422 states have return successors, (1313), 963 states have call predecessors, (1313), 954 states have call successors, (1313) [2023-04-01 05:35:06,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4456 states to 4456 states and 6905 transitions. [2023-04-01 05:35:06,559 INFO L78 Accepts]: Start accepts. Automaton has 4456 states and 6905 transitions. Word has length 148 [2023-04-01 05:35:06,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:35:06,560 INFO L495 AbstractCegarLoop]: Abstraction has 4456 states and 6905 transitions. [2023-04-01 05:35:06,560 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), 4 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2023-04-01 05:35:06,560 INFO L276 IsEmpty]: Start isEmpty. Operand 4456 states and 6905 transitions. [2023-04-01 05:35:06,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-04-01 05:35:06,562 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:35:06,562 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:35:06,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-01 05:35:06,563 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:35:06,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:35:06,563 INFO L85 PathProgramCache]: Analyzing trace with hash -577759597, now seen corresponding path program 1 times [2023-04-01 05:35:06,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:35:06,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023979780] [2023-04-01 05:35:06,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:35:06,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:35:06,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:35:06,843 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 05:35:06,844 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:35:06,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023979780] [2023-04-01 05:35:06,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023979780] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:35:06,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:35:06,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 05:35:06,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315757129] [2023-04-01 05:35:06,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:35:06,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 05:35:06,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:35:06,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 05:35:06,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 05:35:06,846 INFO L87 Difference]: Start difference. First operand 4456 states and 6905 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (29), 4 states have call predecessors, (29), 2 states have call successors, (29) [2023-04-01 05:35:07,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:35:07,560 INFO L93 Difference]: Finished difference Result 4511 states and 6993 transitions. [2023-04-01 05:35:07,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 05:35:07,560 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (29), 4 states have call predecessors, (29), 2 states have call successors, (29) Word has length 147 [2023-04-01 05:35:07,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:35:07,591 INFO L225 Difference]: With dead ends: 4511 [2023-04-01 05:35:07,591 INFO L226 Difference]: Without dead ends: 4494 [2023-04-01 05:35:07,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-04-01 05:35:07,597 INFO L413 NwaCegarLoop]: 622 mSDtfsCounter, 681 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1635 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 05:35:07,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 1635 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 05:35:07,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4494 states. [2023-04-01 05:35:07,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4494 to 4462. [2023-04-01 05:35:07,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4462 states, 3077 states have (on average 1.506662333441664) internal successors, (4636), 3236 states have internal predecessors, (4636), 962 states have call successors, (962), 346 states have call predecessors, (962), 422 states have return successors, (1313), 963 states have call predecessors, (1313), 954 states have call successors, (1313) [2023-04-01 05:35:07,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4462 states to 4462 states and 6911 transitions. [2023-04-01 05:35:07,854 INFO L78 Accepts]: Start accepts. Automaton has 4462 states and 6911 transitions. Word has length 147 [2023-04-01 05:35:07,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:35:07,854 INFO L495 AbstractCegarLoop]: Abstraction has 4462 states and 6911 transitions. [2023-04-01 05:35:07,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (29), 4 states have call predecessors, (29), 2 states have call successors, (29) [2023-04-01 05:35:07,855 INFO L276 IsEmpty]: Start isEmpty. Operand 4462 states and 6911 transitions. [2023-04-01 05:35:07,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-04-01 05:35:07,857 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:35:07,857 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:35:07,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-01 05:35:07,858 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:35:07,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:35:07,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1609803013, now seen corresponding path program 1 times [2023-04-01 05:35:07,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:35:07,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364386884] [2023-04-01 05:35:07,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:35:07,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:35:07,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:35:08,276 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 05:35:08,276 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:35:08,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364386884] [2023-04-01 05:35:08,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364386884] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:35:08,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:35:08,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-01 05:35:08,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275046888] [2023-04-01 05:35:08,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:35:08,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 05:35:08,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:35:08,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 05:35:08,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-01 05:35:08,278 INFO L87 Difference]: Start difference. First operand 4462 states and 6911 transitions. Second operand has 8 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (30), 4 states have call predecessors, (30), 1 states have call successors, (30) [2023-04-01 05:35:08,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:35:08,684 INFO L93 Difference]: Finished difference Result 4485 states and 6940 transitions. [2023-04-01 05:35:08,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 05:35:08,684 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (30), 4 states have call predecessors, (30), 1 states have call successors, (30) Word has length 153 [2023-04-01 05:35:08,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:35:08,714 INFO L225 Difference]: With dead ends: 4485 [2023-04-01 05:35:08,714 INFO L226 Difference]: Without dead ends: 4468 [2023-04-01 05:35:08,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-01 05:35:08,719 INFO L413 NwaCegarLoop]: 625 mSDtfsCounter, 10 mSDsluCounter, 3731 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 4356 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 05:35:08,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 4356 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 05:35:08,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4468 states. [2023-04-01 05:35:08,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4468 to 4462. [2023-04-01 05:35:08,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4462 states, 3077 states have (on average 1.504062398440039) internal successors, (4628), 3236 states have internal predecessors, (4628), 962 states have call successors, (962), 346 states have call predecessors, (962), 422 states have return successors, (1313), 963 states have call predecessors, (1313), 954 states have call successors, (1313) [2023-04-01 05:35:08,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4462 states to 4462 states and 6903 transitions. [2023-04-01 05:35:08,993 INFO L78 Accepts]: Start accepts. Automaton has 4462 states and 6903 transitions. Word has length 153 [2023-04-01 05:35:08,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:35:08,994 INFO L495 AbstractCegarLoop]: Abstraction has 4462 states and 6903 transitions. [2023-04-01 05:35:08,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (30), 4 states have call predecessors, (30), 1 states have call successors, (30) [2023-04-01 05:35:08,994 INFO L276 IsEmpty]: Start isEmpty. Operand 4462 states and 6903 transitions. [2023-04-01 05:35:08,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-04-01 05:35:08,996 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:35:08,997 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:35:08,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-01 05:35:08,997 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:35:08,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:35:08,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1204793806, now seen corresponding path program 1 times [2023-04-01 05:35:08,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:35:08,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257934540] [2023-04-01 05:35:08,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:35:08,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:35:09,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:35:09,793 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-04-01 05:35:09,793 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:35:09,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257934540] [2023-04-01 05:35:09,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257934540] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:35:09,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:35:09,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 05:35:09,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423313639] [2023-04-01 05:35:09,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:35:09,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 05:35:09,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:35:09,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 05:35:09,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-04-01 05:35:09,795 INFO L87 Difference]: Start difference. First operand 4462 states and 6903 transitions. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 8 states have call successors, (37), 5 states have call predecessors, (37), 4 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) [2023-04-01 05:35:13,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:35:13,285 INFO L93 Difference]: Finished difference Result 15480 states and 24241 transitions. [2023-04-01 05:35:13,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 05:35:13,286 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 8 states have call successors, (37), 5 states have call predecessors, (37), 4 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) Word has length 167 [2023-04-01 05:35:13,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:35:13,357 INFO L225 Difference]: With dead ends: 15480 [2023-04-01 05:35:13,357 INFO L226 Difference]: Without dead ends: 11071 [2023-04-01 05:35:13,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-04-01 05:35:13,387 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 2290 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 4420 mSolverCounterSat, 896 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2409 SdHoareTripleChecker+Valid, 1365 SdHoareTripleChecker+Invalid, 5316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 896 IncrementalHoareTripleChecker+Valid, 4420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-04-01 05:35:13,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2409 Valid, 1365 Invalid, 5316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [896 Valid, 4420 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-04-01 05:35:13,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11071 states. [2023-04-01 05:35:14,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11071 to 10731. [2023-04-01 05:35:14,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10731 states, 7341 states have (on average 1.509331153793761) internal successors, (11080), 7745 states have internal predecessors, (11080), 2430 states have call successors, (2430), 766 states have call predecessors, (2430), 959 states have return successors, (3305), 2372 states have call predecessors, (3305), 2422 states have call successors, (3305) [2023-04-01 05:35:14,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10731 states to 10731 states and 16815 transitions. [2023-04-01 05:35:14,137 INFO L78 Accepts]: Start accepts. Automaton has 10731 states and 16815 transitions. Word has length 167 [2023-04-01 05:35:14,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:35:14,138 INFO L495 AbstractCegarLoop]: Abstraction has 10731 states and 16815 transitions. [2023-04-01 05:35:14,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 8 states have call successors, (37), 5 states have call predecessors, (37), 4 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) [2023-04-01 05:35:14,138 INFO L276 IsEmpty]: Start isEmpty. Operand 10731 states and 16815 transitions. [2023-04-01 05:35:14,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-04-01 05:35:14,141 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:35:14,141 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:35:14,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-01 05:35:14,141 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:35:14,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:35:14,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1109144810, now seen corresponding path program 1 times [2023-04-01 05:35:14,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:35:14,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704408750] [2023-04-01 05:35:14,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:35:14,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:35:14,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:35:14,497 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-04-01 05:35:14,498 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:35:14,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704408750] [2023-04-01 05:35:14,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704408750] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:35:14,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:35:14,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-01 05:35:14,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717798024] [2023-04-01 05:35:14,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:35:14,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-01 05:35:14,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:35:14,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-01 05:35:14,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-01 05:35:14,499 INFO L87 Difference]: Start difference. First operand 10731 states and 16815 transitions. Second operand has 10 states, 9 states have (on average 9.666666666666666) internal successors, (87), 7 states have internal predecessors, (87), 2 states have call successors, (37), 2 states have call predecessors, (37), 5 states have return successors, (33), 5 states have call predecessors, (33), 2 states have call successors, (33) [2023-04-01 05:35:15,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:35:15,223 INFO L93 Difference]: Finished difference Result 20953 states and 33146 transitions. [2023-04-01 05:35:15,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 05:35:15,223 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 9.666666666666666) internal successors, (87), 7 states have internal predecessors, (87), 2 states have call successors, (37), 2 states have call predecessors, (37), 5 states have return successors, (33), 5 states have call predecessors, (33), 2 states have call successors, (33) Word has length 170 [2023-04-01 05:35:15,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:35:15,274 INFO L225 Difference]: With dead ends: 20953 [2023-04-01 05:35:15,274 INFO L226 Difference]: Without dead ends: 12099 [2023-04-01 05:35:15,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-01 05:35:15,305 INFO L413 NwaCegarLoop]: 638 mSDtfsCounter, 33 mSDsluCounter, 5083 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 5721 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 05:35:15,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 5721 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 05:35:15,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12099 states. [2023-04-01 05:35:15,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12099 to 11466. [2023-04-01 05:35:15,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11466 states, 7761 states have (on average 1.50727998969205) internal successors, (11698), 8273 states have internal predecessors, (11698), 2685 states have call successors, (2685), 766 states have call predecessors, (2685), 1019 states have return successors, (3641), 2624 states have call predecessors, (3641), 2677 states have call successors, (3641) [2023-04-01 05:35:16,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11466 states to 11466 states and 18024 transitions. [2023-04-01 05:35:16,025 INFO L78 Accepts]: Start accepts. Automaton has 11466 states and 18024 transitions. Word has length 170 [2023-04-01 05:35:16,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:35:16,025 INFO L495 AbstractCegarLoop]: Abstraction has 11466 states and 18024 transitions. [2023-04-01 05:35:16,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 9.666666666666666) internal successors, (87), 7 states have internal predecessors, (87), 2 states have call successors, (37), 2 states have call predecessors, (37), 5 states have return successors, (33), 5 states have call predecessors, (33), 2 states have call successors, (33) [2023-04-01 05:35:16,026 INFO L276 IsEmpty]: Start isEmpty. Operand 11466 states and 18024 transitions. [2023-04-01 05:35:16,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-04-01 05:35:16,034 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:35:16,034 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:35:16,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-01 05:35:16,035 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:35:16,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:35:16,035 INFO L85 PathProgramCache]: Analyzing trace with hash 810039169, now seen corresponding path program 1 times [2023-04-01 05:35:16,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:35:16,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001921473] [2023-04-01 05:35:16,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:35:16,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:35:16,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:35:18,055 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-04-01 05:35:18,055 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:35:18,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001921473] [2023-04-01 05:35:18,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001921473] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 05:35:18,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539680971] [2023-04-01 05:35:18,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:35:18,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:35:18,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:35:18,058 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 05:35:18,061 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 05:35:18,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:35:18,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 3015 conjuncts, 23 conjunts are in the unsatisfiable core [2023-04-01 05:35:18,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:35:20,651 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-01 05:35:20,651 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 05:35:24,267 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-04-01 05:35:24,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539680971] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 05:35:24,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [509668856] [2023-04-01 05:35:24,284 INFO L159 IcfgInterpreter]: Started Sifa with 156 locations of interest [2023-04-01 05:35:24,284 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 05:35:24,287 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 05:35:24,290 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 05:35:24,291 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 05:35:26,489 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 184 for LOIs [2023-04-01 05:35:26,908 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 239 for LOIs [2023-04-01 05:35:29,569 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 239 for LOIs [2023-04-01 05:35:33,635 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 123071 conjuctions. This might take some time...