/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_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 23:45:42,087 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 23:45:42,089 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 23:45:42,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 23:45:42,126 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 23:45:42,129 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 23:45:42,132 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 23:45:42,134 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 23:45:42,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 23:45:42,141 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 23:45:42,142 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 23:45:42,143 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 23:45:42,144 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 23:45:42,146 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 23:45:42,147 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 23:45:42,148 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 23:45:42,149 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 23:45:42,150 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 23:45:42,151 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 23:45:42,156 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 23:45:42,157 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 23:45:42,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 23:45:42,158 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 23:45:42,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 23:45:42,167 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 23:45:42,167 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 23:45:42,167 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 23:45:42,169 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 23:45:42,169 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 23:45:42,170 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 23:45:42,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 23:45:42,170 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 23:45:42,172 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 23:45:42,172 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 23:45:42,173 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 23:45:42,173 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 23:45:42,173 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 23:45:42,174 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 23:45:42,174 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 23:45:42,175 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 23:45:42,175 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 23:45:42,176 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-02 23:45:42,203 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 23:45:42,203 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 23:45:42,204 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 23:45:42,204 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 23:45:42,205 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 23:45:42,205 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 23:45:42,205 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 23:45:42,205 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 23:45:42,205 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 23:45:42,205 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 23:45:42,206 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 23:45:42,206 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 23:45:42,206 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 23:45:42,206 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 23:45:42,207 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 23:45:42,207 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 23:45:42,207 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 23:45:42,207 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 23:45:42,208 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 23:45:42,208 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 23:45:42,208 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 23:45:42,208 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 23:45:42,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 23:45:42,208 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 23:45:42,209 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 23:45:42,209 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 23:45:42,209 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 23:45:42,209 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 23:45:42,209 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 23:45:42,210 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 23:45:42,210 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 23:45:42,210 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 23:45:42,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 23:45:42,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 23:45:42,211 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 23:45:42,211 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 23:45:42,211 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 23:45:42,211 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 23:45:42,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 23:45:42,211 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 23:45:42,211 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 23:45:42,212 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 23:45:42,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 23:45:42,480 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 23:45:42,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 23:45:42,483 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 23:45:42,484 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 23:45:42,485 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c [2023-04-02 23:45:43,683 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 23:45:43,956 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 23:45:43,956 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c [2023-04-02 23:45:43,993 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7329d1756/5f6d42376e52456fb63e00005a26d7a0/FLAG5394bc78c [2023-04-02 23:45:44,008 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7329d1756/5f6d42376e52456fb63e00005a26d7a0 [2023-04-02 23:45:44,011 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 23:45:44,012 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 23:45:44,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 23:45:44,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 23:45:44,018 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 23:45:44,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 11:45:44" (1/1) ... [2023-04-02 23:45:44,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39aa91b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:45:44, skipping insertion in model container [2023-04-02 23:45:44,027 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 11:45:44" (1/1) ... [2023-04-02 23:45:44,033 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 23:45:44,094 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 23:45:44,206 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_product30.cil.c[1545,1558] [2023-04-02 23:45:44,534 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 23:45:44,547 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 23:45:44,563 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_product30.cil.c[1545,1558] [2023-04-02 23:45:44,636 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 23:45:44,659 INFO L208 MainTranslator]: Completed translation [2023-04-02 23:45:44,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:45:44 WrapperNode [2023-04-02 23:45:44,659 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 23:45:44,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 23:45:44,660 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 23:45:44,660 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 23:45:44,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:45:44" (1/1) ... [2023-04-02 23:45:44,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:45:44" (1/1) ... [2023-04-02 23:45:44,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:45:44" (1/1) ... [2023-04-02 23:45:44,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:45:44" (1/1) ... [2023-04-02 23:45:44,766 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:45:44" (1/1) ... [2023-04-02 23:45:44,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:45:44" (1/1) ... [2023-04-02 23:45:44,804 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:45:44" (1/1) ... [2023-04-02 23:45:44,813 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:45:44" (1/1) ... [2023-04-02 23:45:44,831 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 23:45:44,831 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 23:45:44,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 23:45:44,832 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 23:45:44,832 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:45:44" (1/1) ... [2023-04-02 23:45:44,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 23:45:44,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:45:44,870 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 23:45:44,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 23:45:44,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 23:45:44,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 23:45:44,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-02 23:45:44,910 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 23:45:44,911 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-02 23:45:44,911 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2023-04-02 23:45:44,911 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2023-04-02 23:45:44,911 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-02 23:45:44,911 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-02 23:45:44,912 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-02 23:45:44,912 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-02 23:45:44,912 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-02 23:45:44,912 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-02 23:45:44,912 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-02 23:45:44,912 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-02 23:45:44,912 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-02 23:45:44,912 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-02 23:45:44,912 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-02 23:45:44,912 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2023-04-02 23:45:44,912 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-04-02 23:45:44,912 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2023-04-02 23:45:44,913 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-04-02 23:45:44,913 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2023-04-02 23:45:44,913 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2023-04-02 23:45:44,913 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-04-02 23:45:44,913 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2023-04-02 23:45:44,913 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-02 23:45:44,913 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2023-04-02 23:45:44,913 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2023-04-02 23:45:44,913 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2023-04-02 23:45:44,913 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-02 23:45:44,913 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2023-04-02 23:45:44,913 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-02 23:45:44,914 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-02 23:45:44,914 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 23:45:44,914 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2023-04-02 23:45:44,914 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-04-02 23:45:44,914 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-04-02 23:45:44,914 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2023-04-02 23:45:44,914 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-04-02 23:45:44,914 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-04-02 23:45:44,914 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-04-02 23:45:44,915 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-04-02 23:45:44,915 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-04-02 23:45:44,915 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-04-02 23:45:44,916 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-04-02 23:45:44,916 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2023-04-02 23:45:44,916 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2023-04-02 23:45:44,916 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-04-02 23:45:44,916 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2023-04-02 23:45:44,917 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-04-02 23:45:44,917 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2023-04-02 23:45:44,917 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2023-04-02 23:45:44,917 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-04-02 23:45:44,917 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-04-02 23:45:44,917 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2023-04-02 23:45:44,918 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-04-02 23:45:44,918 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-04-02 23:45:44,918 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-04-02 23:45:44,918 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-04-02 23:45:44,919 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2023-04-02 23:45:44,919 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2023-04-02 23:45:44,919 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2023-04-02 23:45:44,919 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2023-04-02 23:45:44,919 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-04-02 23:45:44,919 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2023-04-02 23:45:44,919 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-04-02 23:45:44,919 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2023-04-02 23:45:44,919 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2023-04-02 23:45:44,919 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-04-02 23:45:44,920 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2023-04-02 23:45:44,920 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2023-04-02 23:45:44,920 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-02 23:45:44,920 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__twothirdsfull [2023-04-02 23:45:44,920 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2023-04-02 23:45:44,920 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2023-04-02 23:45:44,920 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2023-04-02 23:45:44,920 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2023-04-02 23:45:44,920 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2023-04-02 23:45:44,921 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2023-04-02 23:45:44,921 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 23:45:44,921 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 23:45:44,921 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 23:45:44,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 23:45:44,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 23:45:44,922 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-02 23:45:44,922 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-04-02 23:45:44,922 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-04-02 23:45:44,922 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-02 23:45:44,923 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-04-02 23:45:44,923 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2023-04-02 23:45:44,923 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2023-04-02 23:45:44,923 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2023-04-02 23:45:44,923 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2023-04-02 23:45:44,923 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2023-04-02 23:45:44,923 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-02 23:45:44,923 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-02 23:45:44,923 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-02 23:45:44,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-02 23:45:44,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-02 23:45:44,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 23:45:44,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-02 23:45:44,924 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-02 23:45:44,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 23:45:44,924 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-02 23:45:44,924 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-02 23:45:44,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 23:45:44,924 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-02 23:45:44,924 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-02 23:45:44,924 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-02 23:45:44,924 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-04-02 23:45:44,925 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-04-02 23:45:44,925 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-02 23:45:44,925 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-02 23:45:44,925 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-02 23:45:44,925 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-02 23:45:44,925 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-02 23:45:44,926 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-02 23:45:44,926 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-02 23:45:44,926 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2023-04-02 23:45:44,927 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-04-02 23:45:44,927 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2023-04-02 23:45:44,929 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2023-04-02 23:45:44,929 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2023-04-02 23:45:44,933 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2023-04-02 23:45:44,933 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2023-04-02 23:45:44,934 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2023-04-02 23:45:44,934 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2023-04-02 23:45:44,934 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2023-04-02 23:45:44,934 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-02 23:45:44,934 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2023-04-02 23:45:44,934 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-02 23:45:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2023-04-02 23:45:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2023-04-02 23:45:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-02 23:45:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 23:45:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-04-02 23:45:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-04-02 23:45:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2023-04-02 23:45:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-04-02 23:45:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-04-02 23:45:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-04-02 23:45:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2023-04-02 23:45:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2023-04-02 23:45:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-04-02 23:45:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-04-02 23:45:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-02 23:45:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-04-02 23:45:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2023-04-02 23:45:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2023-04-02 23:45:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-04-02 23:45:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-04-02 23:45:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-04-02 23:45:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2023-04-02 23:45:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2023-04-02 23:45:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2023-04-02 23:45:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-04-02 23:45:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-04-02 23:45:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2023-04-02 23:45:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-04-02 23:45:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2023-04-02 23:45:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2023-04-02 23:45:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-04-02 23:45:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-04-02 23:45:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2023-04-02 23:45:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2023-04-02 23:45:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-04-02 23:45:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2023-04-02 23:45:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2023-04-02 23:45:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2023-04-02 23:45:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__twothirdsfull [2023-04-02 23:45:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2023-04-02 23:45:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 23:45:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 23:45:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 23:45:45,252 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 23:45:45,255 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 23:45:46,585 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 23:45:47,350 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 23:45:47,351 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-04-02 23:45:47,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 11:45:47 BoogieIcfgContainer [2023-04-02 23:45:47,355 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 23:45:47,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 23:45:47,356 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 23:45:47,359 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 23:45:47,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 11:45:44" (1/3) ... [2023-04-02 23:45:47,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db5f4b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 11:45:47, skipping insertion in model container [2023-04-02 23:45:47,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:45:44" (2/3) ... [2023-04-02 23:45:47,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db5f4b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 11:45:47, skipping insertion in model container [2023-04-02 23:45:47,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 11:45:47" (3/3) ... [2023-04-02 23:45:47,361 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product30.cil.c [2023-04-02 23:45:47,377 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 23:45:47,377 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 23:45:47,433 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 23:45:47,439 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;@8d04244, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 23:45:47,439 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 23:45:47,447 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 343 states have (on average 1.4810495626822158) internal successors, (508), 372 states have internal predecessors, (508), 180 states have call successors, (180), 54 states have call predecessors, (180), 54 states have return successors, (180), 170 states have call predecessors, (180), 180 states have call successors, (180) [2023-04-02 23:45:47,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-04-02 23:45:47,460 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:45:47,461 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:45:47,461 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:45:47,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:45:47,465 INFO L85 PathProgramCache]: Analyzing trace with hash 976115706, now seen corresponding path program 1 times [2023-04-02 23:45:47,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:45:47,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444733805] [2023-04-02 23:45:47,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:45:47,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:45:47,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:45:48,751 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-02 23:45:48,751 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:45:48,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444733805] [2023-04-02 23:45:48,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444733805] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:45:48,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:45:48,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 23:45:48,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654758489] [2023-04-02 23:45:48,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:45:48,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 23:45:48,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:45:48,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 23:45:48,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 23:45:48,796 INFO L87 Difference]: Start difference. First operand has 590 states, 343 states have (on average 1.4810495626822158) internal successors, (508), 372 states have internal predecessors, (508), 180 states have call successors, (180), 54 states have call predecessors, (180), 54 states have return successors, (180), 170 states have call predecessors, (180), 180 states have call successors, (180) Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 6 states have call successors, (24), 5 states have call predecessors, (24), 3 states have return successors, (20), 6 states have call predecessors, (20), 5 states have call successors, (20) [2023-04-02 23:45:51,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:45:51,087 INFO L93 Difference]: Finished difference Result 1400 states and 2158 transitions. [2023-04-02 23:45:51,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 23:45:51,089 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 6 states have call successors, (24), 5 states have call predecessors, (24), 3 states have return successors, (20), 6 states have call predecessors, (20), 5 states have call successors, (20) Word has length 97 [2023-04-02 23:45:51,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:45:51,106 INFO L225 Difference]: With dead ends: 1400 [2023-04-02 23:45:51,106 INFO L226 Difference]: Without dead ends: 969 [2023-04-02 23:45:51,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-04-02 23:45:51,116 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 2172 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 1765 mSolverCounterSat, 985 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2252 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 2750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 985 IncrementalHoareTripleChecker+Valid, 1765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-04-02 23:45:51,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2252 Valid, 469 Invalid, 2750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [985 Valid, 1765 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-04-02 23:45:51,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2023-04-02 23:45:51,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 878. [2023-04-02 23:45:51,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 579 states have (on average 1.5561312607944733) internal successors, (901), 609 states have internal predecessors, (901), 222 states have call successors, (222), 77 states have call predecessors, (222), 76 states have return successors, (224), 201 states have call predecessors, (224), 214 states have call successors, (224) [2023-04-02 23:45:51,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1347 transitions. [2023-04-02 23:45:51,249 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1347 transitions. Word has length 97 [2023-04-02 23:45:51,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:45:51,249 INFO L495 AbstractCegarLoop]: Abstraction has 878 states and 1347 transitions. [2023-04-02 23:45:51,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 6 states have call successors, (24), 5 states have call predecessors, (24), 3 states have return successors, (20), 6 states have call predecessors, (20), 5 states have call successors, (20) [2023-04-02 23:45:51,250 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1347 transitions. [2023-04-02 23:45:51,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-04-02 23:45:51,258 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:45:51,258 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] [2023-04-02 23:45:51,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 23:45:51,259 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:45:51,259 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:45:51,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1047118110, now seen corresponding path program 1 times [2023-04-02 23:45:51,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:45:51,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931238169] [2023-04-02 23:45:51,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:45:51,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:45:51,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:45:52,043 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 23:45:52,043 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:45:52,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931238169] [2023-04-02 23:45:52,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931238169] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:45:52,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:45:52,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 23:45:52,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90961027] [2023-04-02 23:45:52,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:45:52,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 23:45:52,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:45:52,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 23:45:52,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-02 23:45:52,046 INFO L87 Difference]: Start difference. First operand 878 states and 1347 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 6 states have call successors, (32), 4 states have call predecessors, (32), 5 states have return successors, (28), 7 states have call predecessors, (28), 5 states have call successors, (28) [2023-04-02 23:45:55,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:45:55,471 INFO L93 Difference]: Finished difference Result 2824 states and 4413 transitions. [2023-04-02 23:45:55,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-02 23:45:55,472 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 6 states have call successors, (32), 4 states have call predecessors, (32), 5 states have return successors, (28), 7 states have call predecessors, (28), 5 states have call successors, (28) Word has length 140 [2023-04-02 23:45:55,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:45:55,485 INFO L225 Difference]: With dead ends: 2824 [2023-04-02 23:45:55,485 INFO L226 Difference]: Without dead ends: 2000 [2023-04-02 23:45:55,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2023-04-02 23:45:55,491 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 1825 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 5323 mSolverCounterSat, 605 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1902 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 5928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 605 IncrementalHoareTripleChecker+Valid, 5323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:45:55,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1902 Valid, 987 Invalid, 5928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [605 Valid, 5323 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-04-02 23:45:55,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2000 states. [2023-04-02 23:45:55,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2000 to 1949. [2023-04-02 23:45:55,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1949 states, 1329 states have (on average 1.5733634311512414) internal successors, (2091), 1381 states have internal predecessors, (2091), 457 states have call successors, (457), 148 states have call predecessors, (457), 162 states have return successors, (499), 439 states have call predecessors, (499), 449 states have call successors, (499) [2023-04-02 23:45:55,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1949 states to 1949 states and 3047 transitions. [2023-04-02 23:45:55,641 INFO L78 Accepts]: Start accepts. Automaton has 1949 states and 3047 transitions. Word has length 140 [2023-04-02 23:45:55,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:45:55,642 INFO L495 AbstractCegarLoop]: Abstraction has 1949 states and 3047 transitions. [2023-04-02 23:45:55,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 6 states have call successors, (32), 4 states have call predecessors, (32), 5 states have return successors, (28), 7 states have call predecessors, (28), 5 states have call successors, (28) [2023-04-02 23:45:55,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1949 states and 3047 transitions. [2023-04-02 23:45:55,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-04-02 23:45:55,646 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:45:55,646 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] [2023-04-02 23:45:55,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 23:45:55,647 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:45:55,647 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:45:55,647 INFO L85 PathProgramCache]: Analyzing trace with hash -803227421, now seen corresponding path program 1 times [2023-04-02 23:45:55,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:45:55,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089890183] [2023-04-02 23:45:55,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:45:55,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:45:55,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:45:56,436 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 23:45:56,436 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:45:56,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089890183] [2023-04-02 23:45:56,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089890183] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:45:56,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:45:56,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 23:45:56,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629040962] [2023-04-02 23:45:56,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:45:56,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 23:45:56,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:45:56,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 23:45:56,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-04-02 23:45:56,439 INFO L87 Difference]: Start difference. First operand 1949 states and 3047 transitions. Second operand has 12 states, 9 states have (on average 7.777777777777778) internal successors, (70), 10 states have internal predecessors, (70), 6 states have call successors, (33), 5 states have call predecessors, (33), 5 states have return successors, (29), 8 states have call predecessors, (29), 5 states have call successors, (29) [2023-04-02 23:46:01,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:46:01,041 INFO L93 Difference]: Finished difference Result 5020 states and 7854 transitions. [2023-04-02 23:46:01,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-04-02 23:46:01,042 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 7.777777777777778) internal successors, (70), 10 states have internal predecessors, (70), 6 states have call successors, (33), 5 states have call predecessors, (33), 5 states have return successors, (29), 8 states have call predecessors, (29), 5 states have call successors, (29) Word has length 143 [2023-04-02 23:46:01,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:46:01,064 INFO L225 Difference]: With dead ends: 5020 [2023-04-02 23:46:01,064 INFO L226 Difference]: Without dead ends: 3124 [2023-04-02 23:46:01,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2023-04-02 23:46:01,080 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 1234 mSDsluCounter, 1052 mSDsCounter, 0 mSdLazyCounter, 9094 mSolverCounterSat, 595 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1282 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 9689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 595 IncrementalHoareTripleChecker+Valid, 9094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-04-02 23:46:01,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1282 Valid, 1247 Invalid, 9689 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [595 Valid, 9094 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-04-02 23:46:01,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3124 states. [2023-04-02 23:46:01,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3124 to 3055. [2023-04-02 23:46:01,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3055 states, 2104 states have (on average 1.5655893536121672) internal successors, (3294), 2170 states have internal predecessors, (3294), 691 states have call successors, (691), 228 states have call predecessors, (691), 259 states have return successors, (771), 686 states have call predecessors, (771), 683 states have call successors, (771) [2023-04-02 23:46:01,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3055 states to 3055 states and 4756 transitions. [2023-04-02 23:46:01,279 INFO L78 Accepts]: Start accepts. Automaton has 3055 states and 4756 transitions. Word has length 143 [2023-04-02 23:46:01,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:46:01,279 INFO L495 AbstractCegarLoop]: Abstraction has 3055 states and 4756 transitions. [2023-04-02 23:46:01,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 7.777777777777778) internal successors, (70), 10 states have internal predecessors, (70), 6 states have call successors, (33), 5 states have call predecessors, (33), 5 states have return successors, (29), 8 states have call predecessors, (29), 5 states have call successors, (29) [2023-04-02 23:46:01,280 INFO L276 IsEmpty]: Start isEmpty. Operand 3055 states and 4756 transitions. [2023-04-02 23:46:01,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-04-02 23:46:01,283 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:46:01,283 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, 1] [2023-04-02 23:46:01,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 23:46:01,283 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:46:01,285 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:46:01,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1778088233, now seen corresponding path program 1 times [2023-04-02 23:46:01,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:46:01,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232551713] [2023-04-02 23:46:01,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:46:01,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:46:01,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:46:01,692 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 23:46:01,692 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:46:01,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232551713] [2023-04-02 23:46:01,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232551713] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:46:01,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:46:01,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 23:46:01,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394181801] [2023-04-02 23:46:01,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:46:01,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 23:46:01,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:46:01,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 23:46:01,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 23:46:01,695 INFO L87 Difference]: Start difference. First operand 3055 states and 4756 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (29), 4 states have call predecessors, (29), 2 states have call successors, (29) [2023-04-02 23:46:02,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:46:02,004 INFO L93 Difference]: Finished difference Result 5369 states and 8395 transitions. [2023-04-02 23:46:02,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 23:46:02,004 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (29), 4 states have call predecessors, (29), 2 states have call successors, (29) Word has length 145 [2023-04-02 23:46:02,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:46:02,028 INFO L225 Difference]: With dead ends: 5369 [2023-04-02 23:46:02,028 INFO L226 Difference]: Without dead ends: 3167 [2023-04-02 23:46:02,038 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 [2023-04-02 23:46:02,041 INFO L413 NwaCegarLoop]: 645 mSDtfsCounter, 6 mSDsluCounter, 3179 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 3824 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:46:02,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 3824 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:46:02,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3167 states. [2023-04-02 23:46:02,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3167 to 3125. [2023-04-02 23:46:02,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3125 states, 2154 states have (on average 1.552460538532962) internal successors, (3344), 2220 states have internal predecessors, (3344), 691 states have call successors, (691), 228 states have call predecessors, (691), 279 states have return successors, (821), 706 states have call predecessors, (821), 683 states have call successors, (821) [2023-04-02 23:46:02,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3125 states to 3125 states and 4856 transitions. [2023-04-02 23:46:02,255 INFO L78 Accepts]: Start accepts. Automaton has 3125 states and 4856 transitions. Word has length 145 [2023-04-02 23:46:02,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:46:02,257 INFO L495 AbstractCegarLoop]: Abstraction has 3125 states and 4856 transitions. [2023-04-02 23:46:02,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (29), 4 states have call predecessors, (29), 2 states have call successors, (29) [2023-04-02 23:46:02,258 INFO L276 IsEmpty]: Start isEmpty. Operand 3125 states and 4856 transitions. [2023-04-02 23:46:02,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-04-02 23:46:02,264 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:46:02,264 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] [2023-04-02 23:46:02,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 23:46:02,264 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:46:02,264 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:46:02,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1416580983, now seen corresponding path program 1 times [2023-04-02 23:46:02,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:46:02,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096717628] [2023-04-02 23:46:02,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:46:02,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:46:02,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:46:02,637 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 23:46:02,638 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:46:02,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096717628] [2023-04-02 23:46:02,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096717628] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:46:02,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:46:02,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 23:46:02,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459345583] [2023-04-02 23:46:02,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:46:02,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 23:46:02,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:46:02,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 23:46:02,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 23:46:02,640 INFO L87 Difference]: Start difference. First operand 3125 states and 4856 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (29), 4 states have call predecessors, (29), 2 states have call successors, (29) [2023-04-02 23:46:02,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:46:02,977 INFO L93 Difference]: Finished difference Result 5475 states and 8535 transitions. [2023-04-02 23:46:02,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 23:46:02,978 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (29), 4 states have call predecessors, (29), 2 states have call successors, (29) Word has length 144 [2023-04-02 23:46:02,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:46:02,996 INFO L225 Difference]: With dead ends: 5475 [2023-04-02 23:46:02,996 INFO L226 Difference]: Without dead ends: 3217 [2023-04-02 23:46:03,008 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 [2023-04-02 23:46:03,010 INFO L413 NwaCegarLoop]: 640 mSDtfsCounter, 7 mSDsluCounter, 3160 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 3800 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 [2023-04-02 23:46:03,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 3800 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:46:03,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3217 states. [2023-04-02 23:46:03,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3217 to 3135. [2023-04-02 23:46:03,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3135 states, 2164 states have (on average 1.5499075785582255) internal successors, (3354), 2220 states have internal predecessors, (3354), 691 states have call successors, (691), 228 states have call predecessors, (691), 279 states have return successors, (821), 716 states have call predecessors, (821), 683 states have call successors, (821) [2023-04-02 23:46:03,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3135 states to 3135 states and 4866 transitions. [2023-04-02 23:46:03,220 INFO L78 Accepts]: Start accepts. Automaton has 3135 states and 4866 transitions. Word has length 144 [2023-04-02 23:46:03,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:46:03,220 INFO L495 AbstractCegarLoop]: Abstraction has 3135 states and 4866 transitions. [2023-04-02 23:46:03,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (29), 4 states have call predecessors, (29), 2 states have call successors, (29) [2023-04-02 23:46:03,221 INFO L276 IsEmpty]: Start isEmpty. Operand 3135 states and 4866 transitions. [2023-04-02 23:46:03,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-04-02 23:46:03,223 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:46:03,223 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, 1] [2023-04-02 23:46:03,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 23:46:03,224 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:46:03,224 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:46:03,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1842917559, now seen corresponding path program 1 times [2023-04-02 23:46:03,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:46:03,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666291808] [2023-04-02 23:46:03,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:46:03,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:46:03,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:46:03,575 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 23:46:03,575 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:46:03,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666291808] [2023-04-02 23:46:03,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666291808] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:46:03,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:46:03,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 23:46:03,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119061877] [2023-04-02 23:46:03,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:46:03,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 23:46:03,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:46:03,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 23:46:03,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 23:46:03,577 INFO L87 Difference]: Start difference. First operand 3135 states and 4866 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (29), 4 states have call predecessors, (29), 2 states have call successors, (29) [2023-04-02 23:46:03,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:46:03,858 INFO L93 Difference]: Finished difference Result 5493 states and 8553 transitions. [2023-04-02 23:46:03,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 23:46:03,859 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (29), 4 states have call predecessors, (29), 2 states have call successors, (29) Word has length 145 [2023-04-02 23:46:03,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:46:03,877 INFO L225 Difference]: With dead ends: 5493 [2023-04-02 23:46:03,878 INFO L226 Difference]: Without dead ends: 3227 [2023-04-02 23:46:03,888 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 [2023-04-02 23:46:03,890 INFO L413 NwaCegarLoop]: 645 mSDtfsCounter, 6 mSDsluCounter, 3179 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 3824 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:46:03,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 3824 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:46:03,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3227 states. [2023-04-02 23:46:04,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3227 to 3145. [2023-04-02 23:46:04,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3145 states, 2174 states have (on average 1.547378104875805) internal successors, (3364), 2220 states have internal predecessors, (3364), 691 states have call successors, (691), 228 states have call predecessors, (691), 279 states have return successors, (821), 726 states have call predecessors, (821), 683 states have call successors, (821) [2023-04-02 23:46:04,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3145 states to 3145 states and 4876 transitions. [2023-04-02 23:46:04,143 INFO L78 Accepts]: Start accepts. Automaton has 3145 states and 4876 transitions. Word has length 145 [2023-04-02 23:46:04,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:46:04,144 INFO L495 AbstractCegarLoop]: Abstraction has 3145 states and 4876 transitions. [2023-04-02 23:46:04,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (29), 4 states have call predecessors, (29), 2 states have call successors, (29) [2023-04-02 23:46:04,145 INFO L276 IsEmpty]: Start isEmpty. Operand 3145 states and 4876 transitions. [2023-04-02 23:46:04,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-04-02 23:46:04,148 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:46:04,148 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, 1, 1, 1, 1] [2023-04-02 23:46:04,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 23:46:04,148 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:46:04,149 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:46:04,149 INFO L85 PathProgramCache]: Analyzing trace with hash -872239393, now seen corresponding path program 1 times [2023-04-02 23:46:04,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:46:04,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809858619] [2023-04-02 23:46:04,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:46:04,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:46:04,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:46:04,712 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 23:46:04,712 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:46:04,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809858619] [2023-04-02 23:46:04,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809858619] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:46:04,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:46:04,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 23:46:04,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578700772] [2023-04-02 23:46:04,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:46:04,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 23:46:04,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:46:04,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 23:46:04,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-04-02 23:46:04,715 INFO L87 Difference]: Start difference. First operand 3145 states and 4876 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 7 states have call successors, (33), 5 states have call predecessors, (33), 4 states have return successors, (29), 8 states have call predecessors, (29), 6 states have call successors, (29) [2023-04-02 23:46:07,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:46:07,331 INFO L93 Difference]: Finished difference Result 7531 states and 11753 transitions. [2023-04-02 23:46:07,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 23:46:07,332 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 7 states have call successors, (33), 5 states have call predecessors, (33), 4 states have return successors, (29), 8 states have call predecessors, (29), 6 states have call successors, (29) Word has length 148 [2023-04-02 23:46:07,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:46:07,360 INFO L225 Difference]: With dead ends: 7531 [2023-04-02 23:46:07,360 INFO L226 Difference]: Without dead ends: 5007 [2023-04-02 23:46:07,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-04-02 23:46:07,374 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 1915 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 3581 mSolverCounterSat, 701 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2099 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 4282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 701 IncrementalHoareTripleChecker+Valid, 3581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-04-02 23:46:07,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2099 Valid, 492 Invalid, 4282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [701 Valid, 3581 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-04-02 23:46:07,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5007 states. [2023-04-02 23:46:07,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5007 to 4943. [2023-04-02 23:46:07,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4943 states, 3348 states have (on average 1.503584229390681) internal successors, (5034), 3439 states have internal predecessors, (5034), 1120 states have call successors, (1120), 391 states have call predecessors, (1120), 474 states have return successors, (1374), 1162 states have call predecessors, (1374), 1112 states have call successors, (1374) [2023-04-02 23:46:07,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4943 states to 4943 states and 7528 transitions. [2023-04-02 23:46:07,740 INFO L78 Accepts]: Start accepts. Automaton has 4943 states and 7528 transitions. Word has length 148 [2023-04-02 23:46:07,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:46:07,741 INFO L495 AbstractCegarLoop]: Abstraction has 4943 states and 7528 transitions. [2023-04-02 23:46:07,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 7 states have call successors, (33), 5 states have call predecessors, (33), 4 states have return successors, (29), 8 states have call predecessors, (29), 6 states have call successors, (29) [2023-04-02 23:46:07,741 INFO L276 IsEmpty]: Start isEmpty. Operand 4943 states and 7528 transitions. [2023-04-02 23:46:07,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-04-02 23:46:07,744 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:46:07,744 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:46:07,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 23:46:07,745 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:46:07,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:46:07,745 INFO L85 PathProgramCache]: Analyzing trace with hash 861677747, now seen corresponding path program 1 times [2023-04-02 23:46:07,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:46:07,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960489610] [2023-04-02 23:46:07,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:46:07,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:46:07,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:46:08,174 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 23:46:08,175 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:46:08,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960489610] [2023-04-02 23:46:08,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960489610] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:46:08,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:46:08,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 23:46:08,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613686690] [2023-04-02 23:46:08,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:46:08,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 23:46:08,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:46:08,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 23:46:08,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-02 23:46:08,177 INFO L87 Difference]: Start difference. First operand 4943 states and 7528 transitions. Second operand has 9 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 4 states have call successors, (33), 2 states have call predecessors, (33), 5 states have return successors, (29), 6 states have call predecessors, (29), 4 states have call successors, (29) [2023-04-02 23:46:08,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:46:08,816 INFO L93 Difference]: Finished difference Result 10105 states and 15770 transitions. [2023-04-02 23:46:08,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 23:46:08,817 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 4 states have call successors, (33), 2 states have call predecessors, (33), 5 states have return successors, (29), 6 states have call predecessors, (29), 4 states have call successors, (29) Word has length 152 [2023-04-02 23:46:08,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:46:08,886 INFO L225 Difference]: With dead ends: 10105 [2023-04-02 23:46:08,886 INFO L226 Difference]: Without dead ends: 5695 [2023-04-02 23:46:08,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-04-02 23:46:08,914 INFO L413 NwaCegarLoop]: 676 mSDtfsCounter, 230 mSDsluCounter, 4441 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 5117 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 23:46:08,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 5117 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 23:46:08,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5695 states. [2023-04-02 23:46:09,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5695 to 5695. [2023-04-02 23:46:09,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5695 states, 4044 states have (on average 1.5178041543026706) internal successors, (6138), 4155 states have internal predecessors, (6138), 1138 states have call successors, (1138), 409 states have call predecessors, (1138), 512 states have return successors, (1392), 1180 states have call predecessors, (1392), 1130 states have call successors, (1392) [2023-04-02 23:46:09,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5695 states to 5695 states and 8668 transitions. [2023-04-02 23:46:09,268 INFO L78 Accepts]: Start accepts. Automaton has 5695 states and 8668 transitions. Word has length 152 [2023-04-02 23:46:09,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:46:09,268 INFO L495 AbstractCegarLoop]: Abstraction has 5695 states and 8668 transitions. [2023-04-02 23:46:09,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 4 states have call successors, (33), 2 states have call predecessors, (33), 5 states have return successors, (29), 6 states have call predecessors, (29), 4 states have call successors, (29) [2023-04-02 23:46:09,269 INFO L276 IsEmpty]: Start isEmpty. Operand 5695 states and 8668 transitions. [2023-04-02 23:46:09,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-04-02 23:46:09,272 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:46:09,273 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:46:09,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 23:46:09,273 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:46:09,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:46:09,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1662095815, now seen corresponding path program 1 times [2023-04-02 23:46:09,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:46:09,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746134311] [2023-04-02 23:46:09,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:46:09,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:46:09,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:46:09,877 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 23:46:09,877 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:46:09,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746134311] [2023-04-02 23:46:09,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746134311] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:46:09,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:46:09,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 23:46:09,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506571291] [2023-04-02 23:46:09,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:46:09,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 23:46:09,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:46:09,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 23:46:09,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 23:46:09,879 INFO L87 Difference]: Start difference. First operand 5695 states and 8668 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 5 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) [2023-04-02 23:46:12,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:46:12,219 INFO L93 Difference]: Finished difference Result 10752 states and 16414 transitions. [2023-04-02 23:46:12,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 23:46:12,220 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 5 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) Word has length 154 [2023-04-02 23:46:12,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:46:12,248 INFO L225 Difference]: With dead ends: 10752 [2023-04-02 23:46:12,249 INFO L226 Difference]: Without dead ends: 5906 [2023-04-02 23:46:12,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-04-02 23:46:12,274 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 1076 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 3429 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1164 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 3867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 3429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-04-02 23:46:12,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1164 Valid, 571 Invalid, 3867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 3429 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-04-02 23:46:12,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5906 states. [2023-04-02 23:46:12,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5906 to 5785. [2023-04-02 23:46:12,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5785 states, 4104 states have (on average 1.51364522417154) internal successors, (6212), 4229 states have internal predecessors, (6212), 1140 states have call successors, (1140), 425 states have call predecessors, (1140), 540 states have return successors, (1430), 1180 states have call predecessors, (1430), 1132 states have call successors, (1430) [2023-04-02 23:46:12,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5785 states to 5785 states and 8782 transitions. [2023-04-02 23:46:12,726 INFO L78 Accepts]: Start accepts. Automaton has 5785 states and 8782 transitions. Word has length 154 [2023-04-02 23:46:12,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:46:12,726 INFO L495 AbstractCegarLoop]: Abstraction has 5785 states and 8782 transitions. [2023-04-02 23:46:12,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 5 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) [2023-04-02 23:46:12,727 INFO L276 IsEmpty]: Start isEmpty. Operand 5785 states and 8782 transitions. [2023-04-02 23:46:12,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-04-02 23:46:12,730 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:46:12,730 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, 1, 1, 1, 1, 1] [2023-04-02 23:46:12,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 23:46:12,730 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:46:12,731 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:46:12,731 INFO L85 PathProgramCache]: Analyzing trace with hash -2137424185, now seen corresponding path program 1 times [2023-04-02 23:46:12,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:46:12,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320984300] [2023-04-02 23:46:12,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:46:12,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:46:12,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:46:13,032 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-02 23:46:13,033 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:46:13,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320984300] [2023-04-02 23:46:13,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320984300] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:46:13,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:46:13,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 23:46:13,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227689893] [2023-04-02 23:46:13,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:46:13,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 23:46:13,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:46:13,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 23:46:13,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-02 23:46:13,035 INFO L87 Difference]: Start difference. First operand 5785 states and 8782 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (31), 4 states have call predecessors, (31), 2 states have call successors, (31) [2023-04-02 23:46:13,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:46:13,673 INFO L93 Difference]: Finished difference Result 5838 states and 8864 transitions. [2023-04-02 23:46:13,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 23:46:13,674 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (31), 4 states have call predecessors, (31), 2 states have call successors, (31) Word has length 158 [2023-04-02 23:46:13,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:46:13,699 INFO L225 Difference]: With dead ends: 5838 [2023-04-02 23:46:13,699 INFO L226 Difference]: Without dead ends: 5821 [2023-04-02 23:46:13,704 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 [2023-04-02 23:46:13,704 INFO L413 NwaCegarLoop]: 635 mSDtfsCounter, 694 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 1668 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 23:46:13,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 1668 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 23:46:13,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5821 states. [2023-04-02 23:46:14,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5821 to 5791. [2023-04-02 23:46:14,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5791 states, 4110 states have (on average 1.5128953771289537) internal successors, (6218), 4235 states have internal predecessors, (6218), 1140 states have call successors, (1140), 425 states have call predecessors, (1140), 540 states have return successors, (1430), 1180 states have call predecessors, (1430), 1132 states have call successors, (1430) [2023-04-02 23:46:14,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5791 states to 5791 states and 8788 transitions. [2023-04-02 23:46:14,075 INFO L78 Accepts]: Start accepts. Automaton has 5791 states and 8788 transitions. Word has length 158 [2023-04-02 23:46:14,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:46:14,076 INFO L495 AbstractCegarLoop]: Abstraction has 5791 states and 8788 transitions. [2023-04-02 23:46:14,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (31), 4 states have call predecessors, (31), 2 states have call successors, (31) [2023-04-02 23:46:14,077 INFO L276 IsEmpty]: Start isEmpty. Operand 5791 states and 8788 transitions. [2023-04-02 23:46:14,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-04-02 23:46:14,080 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:46:14,080 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:46:14,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 23:46:14,081 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:46:14,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:46:14,081 INFO L85 PathProgramCache]: Analyzing trace with hash -945229187, now seen corresponding path program 1 times [2023-04-02 23:46:14,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:46:14,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835880371] [2023-04-02 23:46:14,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:46:14,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:46:14,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:46:14,523 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-02 23:46:14,523 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:46:14,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835880371] [2023-04-02 23:46:14,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835880371] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:46:14,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:46:14,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 23:46:14,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112131050] [2023-04-02 23:46:14,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:46:14,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 23:46:14,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:46:14,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 23:46:14,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-02 23:46:14,525 INFO L87 Difference]: Start difference. First operand 5791 states and 8788 transitions. Second operand has 9 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 3 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (32), 5 states have call predecessors, (32), 2 states have call successors, (32) [2023-04-02 23:46:15,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:46:15,322 INFO L93 Difference]: Finished difference Result 6033 states and 9121 transitions. [2023-04-02 23:46:15,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 23:46:15,323 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 3 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (32), 5 states have call predecessors, (32), 2 states have call successors, (32) Word has length 163 [2023-04-02 23:46:15,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:46:15,347 INFO L225 Difference]: With dead ends: 6033 [2023-04-02 23:46:15,348 INFO L226 Difference]: Without dead ends: 6016 [2023-04-02 23:46:15,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2023-04-02 23:46:15,352 INFO L413 NwaCegarLoop]: 636 mSDtfsCounter, 678 mSDsluCounter, 3696 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 4332 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 23:46:15,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [681 Valid, 4332 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 23:46:15,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6016 states. [2023-04-02 23:46:15,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6016 to 5930. [2023-04-02 23:46:15,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5930 states, 4199 states have (on average 1.507501786139557) internal successors, (6330), 4324 states have internal predecessors, (6330), 1170 states have call successors, (1170), 445 states have call predecessors, (1170), 560 states have return successors, (1475), 1210 states have call predecessors, (1475), 1162 states have call successors, (1475) [2023-04-02 23:46:15,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5930 states to 5930 states and 8975 transitions. [2023-04-02 23:46:15,837 INFO L78 Accepts]: Start accepts. Automaton has 5930 states and 8975 transitions. Word has length 163 [2023-04-02 23:46:15,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:46:15,838 INFO L495 AbstractCegarLoop]: Abstraction has 5930 states and 8975 transitions. [2023-04-02 23:46:15,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 3 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (32), 5 states have call predecessors, (32), 2 states have call successors, (32) [2023-04-02 23:46:15,838 INFO L276 IsEmpty]: Start isEmpty. Operand 5930 states and 8975 transitions. [2023-04-02 23:46:15,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-04-02 23:46:15,845 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:46:15,845 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:46:15,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 23:46:15,845 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:46:15,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:46:15,846 INFO L85 PathProgramCache]: Analyzing trace with hash -985528768, now seen corresponding path program 1 times [2023-04-02 23:46:15,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:46:15,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750262529] [2023-04-02 23:46:15,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:46:15,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:46:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:46:16,723 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-04-02 23:46:16,724 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:46:16,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750262529] [2023-04-02 23:46:16,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750262529] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:46:16,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:46:16,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 23:46:16,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329123517] [2023-04-02 23:46:16,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:46:16,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 23:46:16,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:46:16,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 23:46:16,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-04-02 23:46:16,726 INFO L87 Difference]: Start difference. First operand 5930 states and 8975 transitions. Second operand has 10 states, 9 states have (on average 10.11111111111111) internal successors, (91), 10 states have internal predecessors, (91), 9 states have call successors, (39), 5 states have call predecessors, (39), 4 states have return successors, (35), 7 states have call predecessors, (35), 8 states have call successors, (35) [2023-04-02 23:46:20,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:46:20,151 INFO L93 Difference]: Finished difference Result 15077 states and 23091 transitions. [2023-04-02 23:46:20,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 23:46:20,152 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 10.11111111111111) internal successors, (91), 10 states have internal predecessors, (91), 9 states have call successors, (39), 5 states have call predecessors, (39), 4 states have return successors, (35), 7 states have call predecessors, (35), 8 states have call successors, (35) Word has length 178 [2023-04-02 23:46:20,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:46:20,195 INFO L225 Difference]: With dead ends: 15077 [2023-04-02 23:46:20,196 INFO L226 Difference]: Without dead ends: 9200 [2023-04-02 23:46:20,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2023-04-02 23:46:20,217 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 2335 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 4493 mSolverCounterSat, 987 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2454 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 5480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 987 IncrementalHoareTripleChecker+Valid, 4493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-04-02 23:46:20,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2454 Valid, 1289 Invalid, 5480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [987 Valid, 4493 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-04-02 23:46:20,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9200 states. [2023-04-02 23:46:20,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9200 to 8936. [2023-04-02 23:46:20,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8936 states, 6244 states have (on average 1.5076873798846893) internal successors, (9414), 6500 states have internal predecessors, (9414), 1867 states have call successors, (1867), 644 states have call predecessors, (1867), 824 states have return successors, (2383), 1891 states have call predecessors, (2383), 1859 states have call successors, (2383) [2023-04-02 23:46:20,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8936 states to 8936 states and 13664 transitions. [2023-04-02 23:46:20,896 INFO L78 Accepts]: Start accepts. Automaton has 8936 states and 13664 transitions. Word has length 178 [2023-04-02 23:46:20,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:46:20,896 INFO L495 AbstractCegarLoop]: Abstraction has 8936 states and 13664 transitions. [2023-04-02 23:46:20,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.11111111111111) internal successors, (91), 10 states have internal predecessors, (91), 9 states have call successors, (39), 5 states have call predecessors, (39), 4 states have return successors, (35), 7 states have call predecessors, (35), 8 states have call successors, (35) [2023-04-02 23:46:20,897 INFO L276 IsEmpty]: Start isEmpty. Operand 8936 states and 13664 transitions. [2023-04-02 23:46:20,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-04-02 23:46:20,900 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:46:20,901 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, 1, 1, 1, 1, 1, 1] [2023-04-02 23:46:20,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 23:46:20,901 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:46:20,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:46:20,901 INFO L85 PathProgramCache]: Analyzing trace with hash 787642874, now seen corresponding path program 1 times [2023-04-02 23:46:20,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:46:20,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661802248] [2023-04-02 23:46:20,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:46:20,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:46:20,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:46:21,361 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-04-02 23:46:21,361 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:46:21,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661802248] [2023-04-02 23:46:21,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661802248] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:46:21,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:46:21,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 23:46:21,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308332675] [2023-04-02 23:46:21,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:46:21,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 23:46:21,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:46:21,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 23:46:21,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-02 23:46:21,363 INFO L87 Difference]: Start difference. First operand 8936 states and 13664 transitions. Second operand has 10 states, 9 states have (on average 10.222222222222221) internal successors, (92), 7 states have internal predecessors, (92), 2 states have call successors, (39), 2 states have call predecessors, (39), 5 states have return successors, (35), 5 states have call predecessors, (35), 2 states have call successors, (35) [2023-04-02 23:46:22,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:46:22,320 INFO L93 Difference]: Finished difference Result 18054 states and 27931 transitions. [2023-04-02 23:46:22,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 23:46:22,321 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 10.222222222222221) internal successors, (92), 7 states have internal predecessors, (92), 2 states have call successors, (39), 2 states have call predecessors, (39), 5 states have return successors, (35), 5 states have call predecessors, (35), 2 states have call successors, (35) Word has length 179 [2023-04-02 23:46:22,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:46:22,377 INFO L225 Difference]: With dead ends: 18054 [2023-04-02 23:46:22,377 INFO L226 Difference]: Without dead ends: 10126 [2023-04-02 23:46:22,407 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 [2023-04-02 23:46:22,409 INFO L413 NwaCegarLoop]: 648 mSDtfsCounter, 33 mSDsluCounter, 5166 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 5814 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 [2023-04-02 23:46:22,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 5814 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 23:46:22,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10126 states. [2023-04-02 23:46:23,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10126 to 9524. [2023-04-02 23:46:23,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9524 states, 6594 states have (on average 1.5040946314831665) internal successors, (9918), 6934 states have internal predecessors, (9918), 2049 states have call successors, (2049), 644 states have call predecessors, (2049), 880 states have return successors, (2635), 2080 states have call predecessors, (2635), 2041 states have call successors, (2635) [2023-04-02 23:46:23,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9524 states to 9524 states and 14602 transitions. [2023-04-02 23:46:23,068 INFO L78 Accepts]: Start accepts. Automaton has 9524 states and 14602 transitions. Word has length 179 [2023-04-02 23:46:23,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:46:23,069 INFO L495 AbstractCegarLoop]: Abstraction has 9524 states and 14602 transitions. [2023-04-02 23:46:23,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.222222222222221) internal successors, (92), 7 states have internal predecessors, (92), 2 states have call successors, (39), 2 states have call predecessors, (39), 5 states have return successors, (35), 5 states have call predecessors, (35), 2 states have call successors, (35) [2023-04-02 23:46:23,069 INFO L276 IsEmpty]: Start isEmpty. Operand 9524 states and 14602 transitions. [2023-04-02 23:46:23,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-04-02 23:46:23,073 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:46:23,073 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:46:23,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 23:46:23,074 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:46:23,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:46:23,074 INFO L85 PathProgramCache]: Analyzing trace with hash 656540370, now seen corresponding path program 1 times [2023-04-02 23:46:23,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:46:23,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232348263] [2023-04-02 23:46:23,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:46:23,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:46:23,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:46:24,035 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-04-02 23:46:24,036 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:46:24,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232348263] [2023-04-02 23:46:24,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232348263] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:46:24,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545119877] [2023-04-02 23:46:24,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:46:24,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:46:24,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:46:24,043 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 23:46:24,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 23:46:24,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:46:24,611 INFO L262 TraceCheckSpWp]: Trace formula consists of 3267 conjuncts, 23 conjunts are in the unsatisfiable core [2023-04-02 23:46:24,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:46:26,981 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-02 23:46:26,981 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:46:32,415 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-04-02 23:46:32,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545119877] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 23:46:32,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [376972896] [2023-04-02 23:46:32,437 INFO L159 IcfgInterpreter]: Started Sifa with 167 locations of interest [2023-04-02 23:46:32,437 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:46:32,440 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:46:32,444 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:46:32,444 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:46:35,114 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 187 for LOIs [2023-04-02 23:46:35,628 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 243 for LOIs [2023-04-02 23:46:38,596 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 243 for LOIs [2023-04-02 23:46:43,142 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 248063 conjuctions. This might take some time...