/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 IntervalDomain -i ../sv-benchmarks/c/product-lines/elevator_spec9_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 23:37:12,067 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 23:37:12,070 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 23:37:12,106 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 23:37:12,107 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 23:37:12,111 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 23:37:12,114 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 23:37:12,116 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 23:37:12,118 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 23:37:12,122 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 23:37:12,124 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 23:37:12,125 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 23:37:12,126 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 23:37:12,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 23:37:12,129 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 23:37:12,130 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 23:37:12,130 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 23:37:12,131 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 23:37:12,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 23:37:12,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 23:37:12,138 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 23:37:12,139 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 23:37:12,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 23:37:12,141 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 23:37:12,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 23:37:12,149 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 23:37:12,149 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 23:37:12,151 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 23:37:12,151 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 23:37:12,152 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 23:37:12,152 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 23:37:12,153 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 23:37:12,154 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 23:37:12,155 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 23:37:12,155 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 23:37:12,156 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 23:37:12,156 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 23:37:12,156 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 23:37:12,156 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 23:37:12,158 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 23:37:12,158 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 23:37:12,159 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 [2023-03-31 23:37:12,187 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 23:37:12,187 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 23:37:12,188 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 23:37:12,188 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 23:37:12,189 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 23:37:12,189 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 23:37:12,189 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 23:37:12,189 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 23:37:12,190 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 23:37:12,190 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 23:37:12,190 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 23:37:12,191 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 23:37:12,191 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 23:37:12,191 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 23:37:12,191 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 23:37:12,191 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 23:37:12,191 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 23:37:12,191 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 23:37:12,192 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 23:37:12,192 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 23:37:12,192 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 23:37:12,193 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 23:37:12,193 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 23:37:12,193 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 23:37:12,193 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 23:37:12,193 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 23:37:12,194 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 23:37:12,194 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 23:37:12,194 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 23:37:12,194 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 23:37:12,194 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 23:37:12,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 23:37:12,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 23:37:12,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 23:37:12,195 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 23:37:12,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 23:37:12,195 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 23:37:12,195 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 23:37:12,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 23:37:12,196 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 23:37:12,196 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 23:37:12,196 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 23:37:12,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 23:37:12,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 23:37:12,466 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 23:37:12,467 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 23:37:12,467 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 23:37:12,469 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec9_productSimulator.cil.c [2023-03-31 23:37:13,745 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 23:37:14,111 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 23:37:14,112 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec9_productSimulator.cil.c [2023-03-31 23:37:14,136 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8aca8d48b/df7fd1d67574423aa75f901a35685757/FLAG109e93683 [2023-03-31 23:37:14,154 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8aca8d48b/df7fd1d67574423aa75f901a35685757 [2023-03-31 23:37:14,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 23:37:14,158 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 23:37:14,161 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 23:37:14,161 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 23:37:14,165 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 23:37:14,166 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:37:14" (1/1) ... [2023-03-31 23:37:14,167 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b5bdc19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:37:14, skipping insertion in model container [2023-03-31 23:37:14,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:37:14" (1/1) ... [2023-03-31 23:37:14,173 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 23:37:14,250 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 23:37:14,717 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_spec9_productSimulator.cil.c[36997,37010] [2023-03-31 23:37:14,931 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 23:37:14,945 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 23:37:15,010 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_spec9_productSimulator.cil.c[36997,37010] [2023-03-31 23:37:15,074 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 23:37:15,107 INFO L208 MainTranslator]: Completed translation [2023-03-31 23:37:15,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:37:15 WrapperNode [2023-03-31 23:37:15,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 23:37:15,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 23:37:15,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 23:37:15,109 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 23:37:15,120 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:37:15" (1/1) ... [2023-03-31 23:37:15,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:37:15" (1/1) ... [2023-03-31 23:37:15,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:37:15" (1/1) ... [2023-03-31 23:37:15,175 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:37:15" (1/1) ... [2023-03-31 23:37:15,234 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:37:15" (1/1) ... [2023-03-31 23:37:15,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:37:15" (1/1) ... [2023-03-31 23:37:15,288 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:37:15" (1/1) ... [2023-03-31 23:37:15,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:37:15" (1/1) ... [2023-03-31 23:37:15,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 23:37:15,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 23:37:15,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 23:37:15,317 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 23:37:15,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:37:15" (1/1) ... [2023-03-31 23:37:15,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 23:37:15,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:37:15,351 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) [2023-03-31 23:37:15,373 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 [2023-03-31 23:37:15,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 23:37:15,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 23:37:15,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-03-31 23:37:15,392 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 23:37:15,393 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2023-03-31 23:37:15,393 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-03-31 23:37:15,393 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2023-03-31 23:37:15,393 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-03-31 23:37:15,393 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2023-03-31 23:37:15,393 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2023-03-31 23:37:15,394 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-03-31 23:37:15,394 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2023-03-31 23:37:15,394 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-03-31 23:37:15,394 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2023-03-31 23:37:15,394 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2023-03-31 23:37:15,394 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2023-03-31 23:37:15,394 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-03-31 23:37:15,394 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2023-03-31 23:37:15,394 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-03-31 23:37:15,394 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-03-31 23:37:15,394 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 23:37:15,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-03-31 23:37:15,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-03-31 23:37:15,395 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-03-31 23:37:15,395 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-03-31 23:37:15,395 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-03-31 23:37:15,395 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-03-31 23:37:15,395 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2023-03-31 23:37:15,395 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2023-03-31 23:37:15,395 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2023-03-31 23:37:15,395 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-03-31 23:37:15,395 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-03-31 23:37:15,395 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2023-03-31 23:37:15,395 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-03-31 23:37:15,395 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-03-31 23:37:15,395 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-03-31 23:37:15,396 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-03-31 23:37:15,396 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__1 [2023-03-31 23:37:15,396 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__2 [2023-03-31 23:37:15,396 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__3 [2023-03-31 23:37:15,397 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification9_spec__4 [2023-03-31 23:37:15,397 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-03-31 23:37:15,397 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-03-31 23:37:15,397 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-03-31 23:37:15,397 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-03-31 23:37:15,398 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-03-31 23:37:15,398 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-03-31 23:37:15,398 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-03-31 23:37:15,398 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-03-31 23:37:15,398 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-03-31 23:37:15,398 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2023-03-31 23:37:15,398 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2023-03-31 23:37:15,398 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__before__overloaded [2023-03-31 23:37:15,399 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked__role__overloaded [2023-03-31 23:37:15,399 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-03-31 23:37:15,399 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__before__weight [2023-03-31 23:37:15,399 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__role__weight [2023-03-31 23:37:15,399 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-03-31 23:37:15,400 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__weight [2023-03-31 23:37:15,400 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__weight [2023-03-31 23:37:15,400 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__before__empty [2023-03-31 23:37:15,401 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__role__empty [2023-03-31 23:37:15,401 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-03-31 23:37:15,401 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-03-31 23:37:15,401 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2023-03-31 23:37:15,401 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-03-31 23:37:15,401 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-03-31 23:37:15,401 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-03-31 23:37:15,401 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-03-31 23:37:15,401 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2023-03-31 23:37:15,401 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2023-03-31 23:37:15,401 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2023-03-31 23:37:15,401 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__twothirdsfull [2023-03-31 23:37:15,401 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__twothirdsfull [2023-03-31 23:37:15,402 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__before__executivefloor [2023-03-31 23:37:15,402 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__role__executivefloor [2023-03-31 23:37:15,402 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-03-31 23:37:15,402 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2023-03-31 23:37:15,402 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-03-31 23:37:15,402 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2023-03-31 23:37:15,403 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2023-03-31 23:37:15,403 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__before__executivefloor [2023-03-31 23:37:15,403 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__role__executivefloor [2023-03-31 23:37:15,403 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2023-03-31 23:37:15,403 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-03-31 23:37:15,404 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2023-03-31 23:37:15,404 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__before__overloaded [2023-03-31 23:37:15,404 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__role__overloaded [2023-03-31 23:37:15,404 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-03-31 23:37:15,404 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__before__overloaded [2023-03-31 23:37:15,404 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__role__overloaded [2023-03-31 23:37:15,404 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2023-03-31 23:37:15,405 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2023-03-31 23:37:15,405 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2023-03-31 23:37:15,405 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2023-03-31 23:37:15,405 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 23:37:15,405 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 23:37:15,405 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 23:37:15,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 23:37:15,405 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 23:37:15,405 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-31 23:37:15,405 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2023-03-31 23:37:15,405 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-03-31 23:37:15,405 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-03-31 23:37:15,405 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-03-31 23:37:15,406 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2023-03-31 23:37:15,406 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-03-31 23:37:15,406 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2023-03-31 23:37:15,406 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2023-03-31 23:37:15,406 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-03-31 23:37:15,406 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-03-31 23:37:15,407 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2023-03-31 23:37:15,407 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2023-03-31 23:37:15,407 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-03-31 23:37:15,407 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-03-31 23:37:15,407 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2023-03-31 23:37:15,407 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2023-03-31 23:37:15,408 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2023-03-31 23:37:15,408 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2023-03-31 23:37:15,408 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2023-03-31 23:37:15,409 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-03-31 23:37:15,409 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2023-03-31 23:37:15,411 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-03-31 23:37:15,412 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__1 [2023-03-31 23:37:15,416 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__4 [2023-03-31 23:37:15,416 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-03-31 23:37:15,416 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-03-31 23:37:15,416 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-03-31 23:37:15,416 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-03-31 23:37:15,416 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-03-31 23:37:15,416 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 23:37:15,417 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-03-31 23:37:15,417 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-03-31 23:37:15,417 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-03-31 23:37:15,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-03-31 23:37:15,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-03-31 23:37:15,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 23:37:15,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-03-31 23:37:15,417 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-03-31 23:37:15,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 23:37:15,417 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-03-31 23:37:15,417 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-03-31 23:37:15,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 23:37:15,418 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-03-31 23:37:15,418 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-03-31 23:37:15,418 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-03-31 23:37:15,418 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2023-03-31 23:37:15,418 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2023-03-31 23:37:15,418 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2023-03-31 23:37:15,418 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-03-31 23:37:15,418 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-03-31 23:37:15,418 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2023-03-31 23:37:15,418 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-03-31 23:37:15,418 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-03-31 23:37:15,418 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-03-31 23:37:15,418 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2023-03-31 23:37:15,418 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-03-31 23:37:15,418 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2023-03-31 23:37:15,418 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-03-31 23:37:15,419 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-03-31 23:37:15,419 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__2 [2023-03-31 23:37:15,419 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification9_spec__3 [2023-03-31 23:37:15,419 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-03-31 23:37:15,419 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-03-31 23:37:15,419 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-03-31 23:37:15,419 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-03-31 23:37:15,419 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-03-31 23:37:15,419 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2023-03-31 23:37:15,419 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-03-31 23:37:15,419 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2023-03-31 23:37:15,419 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2023-03-31 23:37:15,419 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__before__overloaded [2023-03-31 23:37:15,419 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked__role__overloaded [2023-03-31 23:37:15,419 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__before__weight [2023-03-31 23:37:15,419 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__role__weight [2023-03-31 23:37:15,419 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__weight [2023-03-31 23:37:15,420 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__weight [2023-03-31 23:37:15,420 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__before__empty [2023-03-31 23:37:15,420 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__role__empty [2023-03-31 23:37:15,420 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-03-31 23:37:15,420 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-03-31 23:37:15,420 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2023-03-31 23:37:15,420 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-03-31 23:37:15,420 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2023-03-31 23:37:15,420 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__twothirdsfull [2023-03-31 23:37:15,420 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__twothirdsfull [2023-03-31 23:37:15,421 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__before__executivefloor [2023-03-31 23:37:15,421 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__role__executivefloor [2023-03-31 23:37:15,422 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-03-31 23:37:15,422 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-03-31 23:37:15,422 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__twothirdsfull [2023-03-31 23:37:15,422 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__twothirdsfull [2023-03-31 23:37:15,422 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__before__executivefloor [2023-03-31 23:37:15,422 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__role__executivefloor [2023-03-31 23:37:15,422 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2023-03-31 23:37:15,423 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-03-31 23:37:15,423 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2023-03-31 23:37:15,423 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__before__overloaded [2023-03-31 23:37:15,423 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__role__overloaded [2023-03-31 23:37:15,423 INFO L130 BoogieDeclarations]: Found specification of procedure printState__before__overloaded [2023-03-31 23:37:15,423 INFO L130 BoogieDeclarations]: Found specification of procedure printState__role__overloaded [2023-03-31 23:37:15,423 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2023-03-31 23:37:15,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 23:37:15,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 23:37:15,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 23:37:15,695 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 23:37:15,702 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 23:37:17,124 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 23:37:18,100 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 23:37:18,100 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-03-31 23:37:18,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:37:18 BoogieIcfgContainer [2023-03-31 23:37:18,107 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 23:37:18,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 23:37:18,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 23:37:18,113 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 23:37:18,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 11:37:14" (1/3) ... [2023-03-31 23:37:18,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25411338 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:37:18, skipping insertion in model container [2023-03-31 23:37:18,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:37:15" (2/3) ... [2023-03-31 23:37:18,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25411338 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:37:18, skipping insertion in model container [2023-03-31 23:37:18,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:37:18" (3/3) ... [2023-03-31 23:37:18,115 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec9_productSimulator.cil.c [2023-03-31 23:37:18,132 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 23:37:18,132 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 23:37:18,202 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 23:37:18,209 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;@68ab1133, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 23:37:18,210 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 23:37:18,216 INFO L276 IsEmpty]: Start isEmpty. Operand has 695 states, 403 states have (on average 1.4416873449131513) internal successors, (581), 437 states have internal predecessors, (581), 210 states have call successors, (210), 69 states have call predecessors, (210), 69 states have return successors, (210), 195 states have call predecessors, (210), 210 states have call successors, (210) [2023-03-31 23:37:18,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-03-31 23:37:18,230 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:37:18,231 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:37:18,231 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:37:18,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:37:18,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1511909104, now seen corresponding path program 1 times [2023-03-31 23:37:18,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:37:18,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032896495] [2023-03-31 23:37:18,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:37:18,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:37:18,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:37:19,074 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-03-31 23:37:19,074 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:37:19,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032896495] [2023-03-31 23:37:19,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032896495] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:37:19,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:37:19,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 23:37:19,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914035276] [2023-03-31 23:37:19,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:37:19,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 23:37:19,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:37:19,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 23:37:19,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 23:37:19,125 INFO L87 Difference]: Start difference. First operand has 695 states, 403 states have (on average 1.4416873449131513) internal successors, (581), 437 states have internal predecessors, (581), 210 states have call successors, (210), 69 states have call predecessors, (210), 69 states have return successors, (210), 195 states have call predecessors, (210), 210 states have call successors, (210) Second operand has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2023-03-31 23:37:19,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:37:19,506 INFO L93 Difference]: Finished difference Result 1096 states and 1595 transitions. [2023-03-31 23:37:19,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 23:37:19,509 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) Word has length 100 [2023-03-31 23:37:19,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:37:19,535 INFO L225 Difference]: With dead ends: 1096 [2023-03-31 23:37:19,535 INFO L226 Difference]: Without dead ends: 553 [2023-03-31 23:37:19,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-03-31 23:37:19,548 INFO L413 NwaCegarLoop]: 759 mSDtfsCounter, 3 mSDsluCounter, 3030 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3789 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 23:37:19,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 3789 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 23:37:19,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2023-03-31 23:37:19,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2023-03-31 23:37:19,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 342 states have (on average 1.4649122807017543) internal successors, (501), 367 states have internal predecessors, (501), 151 states have call successors, (151), 63 states have call predecessors, (151), 59 states have return successors, (143), 135 states have call predecessors, (143), 143 states have call successors, (143) [2023-03-31 23:37:19,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 795 transitions. [2023-03-31 23:37:19,624 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 795 transitions. Word has length 100 [2023-03-31 23:37:19,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:37:19,626 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 795 transitions. [2023-03-31 23:37:19,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2023-03-31 23:37:19,626 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 795 transitions. [2023-03-31 23:37:19,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-03-31 23:37:19,631 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:37:19,632 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:37:19,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 23:37:19,632 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:37:19,633 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:37:19,633 INFO L85 PathProgramCache]: Analyzing trace with hash 910728103, now seen corresponding path program 1 times [2023-03-31 23:37:19,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:37:19,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329814448] [2023-03-31 23:37:19,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:37:19,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:37:19,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:37:19,894 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-03-31 23:37:19,894 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:37:19,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329814448] [2023-03-31 23:37:19,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329814448] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:37:19,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:37:19,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 23:37:19,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174064015] [2023-03-31 23:37:19,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:37:19,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 23:37:19,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:37:19,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 23:37:19,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 23:37:19,899 INFO L87 Difference]: Start difference. First operand 553 states and 795 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 4 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2023-03-31 23:37:20,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:37:20,925 INFO L93 Difference]: Finished difference Result 1553 states and 2267 transitions. [2023-03-31 23:37:20,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 23:37:20,926 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 4 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) Word has length 102 [2023-03-31 23:37:20,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:37:20,934 INFO L225 Difference]: With dead ends: 1553 [2023-03-31 23:37:20,934 INFO L226 Difference]: Without dead ends: 1059 [2023-03-31 23:37:20,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 23:37:20,938 INFO L413 NwaCegarLoop]: 1440 mSDtfsCounter, 1498 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 2333 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-03-31 23:37:20,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 2333 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-03-31 23:37:20,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2023-03-31 23:37:21,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 1046. [2023-03-31 23:37:21,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1046 states, 657 states have (on average 1.4672754946727549) internal successors, (964), 700 states have internal predecessors, (964), 277 states have call successors, (277), 115 states have call predecessors, (277), 111 states have return successors, (269), 255 states have call predecessors, (269), 268 states have call successors, (269) [2023-03-31 23:37:21,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1510 transitions. [2023-03-31 23:37:21,016 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1510 transitions. Word has length 102 [2023-03-31 23:37:21,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:37:21,016 INFO L495 AbstractCegarLoop]: Abstraction has 1046 states and 1510 transitions. [2023-03-31 23:37:21,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 4 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2023-03-31 23:37:21,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1510 transitions. [2023-03-31 23:37:21,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-03-31 23:37:21,021 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:37:21,021 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:37:21,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 23:37:21,021 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:37:21,022 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:37:21,022 INFO L85 PathProgramCache]: Analyzing trace with hash -960075505, now seen corresponding path program 1 times [2023-03-31 23:37:21,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:37:21,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158708416] [2023-03-31 23:37:21,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:37:21,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:37:21,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:37:21,731 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-03-31 23:37:21,732 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:37:21,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158708416] [2023-03-31 23:37:21,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158708416] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:37:21,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:37:21,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 23:37:21,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003560152] [2023-03-31 23:37:21,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:37:21,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 23:37:21,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:37:21,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 23:37:21,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 23:37:21,736 INFO L87 Difference]: Start difference. First operand 1046 states and 1510 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 6 states have call successors, (27), 5 states have call predecessors, (27), 3 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) [2023-03-31 23:37:23,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:37:23,965 INFO L93 Difference]: Finished difference Result 2685 states and 4047 transitions. [2023-03-31 23:37:23,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 23:37:23,966 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 6 states have call successors, (27), 5 states have call predecessors, (27), 3 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) Word has length 103 [2023-03-31 23:37:23,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:37:23,988 INFO L225 Difference]: With dead ends: 2685 [2023-03-31 23:37:23,988 INFO L226 Difference]: Without dead ends: 2197 [2023-03-31 23:37:23,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-03-31 23:37:24,000 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 1530 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 2183 mSolverCounterSat, 701 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1630 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 2884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 701 IncrementalHoareTripleChecker+Valid, 2183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-03-31 23:37:24,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1630 Valid, 606 Invalid, 2884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [701 Valid, 2183 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-03-31 23:37:24,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2197 states. [2023-03-31 23:37:24,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2197 to 2162. [2023-03-31 23:37:24,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2162 states, 1349 states have (on average 1.4788732394366197) internal successors, (1995), 1447 states have internal predecessors, (1995), 598 states have call successors, (598), 206 states have call predecessors, (598), 214 states have return successors, (691), 576 states have call predecessors, (691), 589 states have call successors, (691) [2023-03-31 23:37:24,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2162 states to 2162 states and 3284 transitions. [2023-03-31 23:37:24,190 INFO L78 Accepts]: Start accepts. Automaton has 2162 states and 3284 transitions. Word has length 103 [2023-03-31 23:37:24,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:37:24,191 INFO L495 AbstractCegarLoop]: Abstraction has 2162 states and 3284 transitions. [2023-03-31 23:37:24,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 6 states have call successors, (27), 5 states have call predecessors, (27), 3 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) [2023-03-31 23:37:24,191 INFO L276 IsEmpty]: Start isEmpty. Operand 2162 states and 3284 transitions. [2023-03-31 23:37:24,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-03-31 23:37:24,205 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:37:24,205 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:37:24,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 23:37:24,205 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:37:24,206 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:37:24,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1287989370, now seen corresponding path program 1 times [2023-03-31 23:37:24,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:37:24,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826751648] [2023-03-31 23:37:24,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:37:24,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:37:24,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:37:25,004 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-03-31 23:37:25,004 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:37:25,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826751648] [2023-03-31 23:37:25,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826751648] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:37:25,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:37:25,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-03-31 23:37:25,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252225875] [2023-03-31 23:37:25,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:37:25,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-03-31 23:37:25,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:37:25,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-03-31 23:37:25,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2023-03-31 23:37:25,007 INFO L87 Difference]: Start difference. First operand 2162 states and 3284 transitions. Second operand has 13 states, 12 states have (on average 6.333333333333333) internal successors, (76), 9 states have internal predecessors, (76), 2 states have call successors, (34), 2 states have call predecessors, (34), 6 states have return successors, (30), 6 states have call predecessors, (30), 2 states have call successors, (30) [2023-03-31 23:37:25,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:37:25,480 INFO L93 Difference]: Finished difference Result 4464 states and 6921 transitions. [2023-03-31 23:37:25,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-03-31 23:37:25,481 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.333333333333333) internal successors, (76), 9 states have internal predecessors, (76), 2 states have call successors, (34), 2 states have call predecessors, (34), 6 states have return successors, (30), 6 states have call predecessors, (30), 2 states have call successors, (30) Word has length 144 [2023-03-31 23:37:25,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:37:25,505 INFO L225 Difference]: With dead ends: 4464 [2023-03-31 23:37:25,506 INFO L226 Difference]: Without dead ends: 2396 [2023-03-31 23:37:25,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2023-03-31 23:37:25,525 INFO L413 NwaCegarLoop]: 816 mSDtfsCounter, 34 mSDsluCounter, 8907 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 9723 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 23:37:25,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 9723 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 23:37:25,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2396 states. [2023-03-31 23:37:25,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2396 to 2202. [2023-03-31 23:37:25,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2202 states, 1377 states have (on average 1.4691358024691359) internal successors, (2023), 1475 states have internal predecessors, (2023), 598 states have call successors, (598), 206 states have call predecessors, (598), 226 states have return successors, (715), 588 states have call predecessors, (715), 589 states have call successors, (715) [2023-03-31 23:37:25,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2202 states to 2202 states and 3336 transitions. [2023-03-31 23:37:25,729 INFO L78 Accepts]: Start accepts. Automaton has 2202 states and 3336 transitions. Word has length 144 [2023-03-31 23:37:25,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:37:25,731 INFO L495 AbstractCegarLoop]: Abstraction has 2202 states and 3336 transitions. [2023-03-31 23:37:25,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.333333333333333) internal successors, (76), 9 states have internal predecessors, (76), 2 states have call successors, (34), 2 states have call predecessors, (34), 6 states have return successors, (30), 6 states have call predecessors, (30), 2 states have call successors, (30) [2023-03-31 23:37:25,732 INFO L276 IsEmpty]: Start isEmpty. Operand 2202 states and 3336 transitions. [2023-03-31 23:37:25,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-03-31 23:37:25,740 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:37:25,740 INFO L195 NwaCegarLoop]: trace histogram [5, 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] [2023-03-31 23:37:25,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 23:37:25,741 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:37:25,741 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:37:25,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1004884753, now seen corresponding path program 1 times [2023-03-31 23:37:25,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:37:25,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042506811] [2023-03-31 23:37:25,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:37:25,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:37:25,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:37:25,911 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-03-31 23:37:25,912 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:37:25,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042506811] [2023-03-31 23:37:25,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042506811] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:37:25,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:37:25,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 23:37:25,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584120675] [2023-03-31 23:37:25,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:37:25,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 23:37:25,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:37:25,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 23:37:25,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 23:37:25,915 INFO L87 Difference]: Start difference. First operand 2202 states and 3336 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 4 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2023-03-31 23:37:27,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:37:27,043 INFO L93 Difference]: Finished difference Result 6283 states and 9713 transitions. [2023-03-31 23:37:27,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 23:37:27,044 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 4 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) Word has length 147 [2023-03-31 23:37:27,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:37:27,115 INFO L225 Difference]: With dead ends: 6283 [2023-03-31 23:37:27,115 INFO L226 Difference]: Without dead ends: 4175 [2023-03-31 23:37:27,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 23:37:27,130 INFO L413 NwaCegarLoop]: 1421 mSDtfsCounter, 1416 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1416 SdHoareTripleChecker+Valid, 2375 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-03-31 23:37:27,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1416 Valid, 2375 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-03-31 23:37:27,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4175 states. [2023-03-31 23:37:27,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4175 to 4134. [2023-03-31 23:37:27,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4134 states, 2606 states have (on average 1.483499616270146) internal successors, (3866), 2794 states have internal predecessors, (3866), 1119 states have call successors, (1119), 383 states have call predecessors, (1119), 408 states have return successors, (1347), 1092 states have call predecessors, (1347), 1110 states have call successors, (1347) [2023-03-31 23:37:27,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4134 states to 4134 states and 6332 transitions. [2023-03-31 23:37:27,423 INFO L78 Accepts]: Start accepts. Automaton has 4134 states and 6332 transitions. Word has length 147 [2023-03-31 23:37:27,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:37:27,423 INFO L495 AbstractCegarLoop]: Abstraction has 4134 states and 6332 transitions. [2023-03-31 23:37:27,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 4 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2023-03-31 23:37:27,424 INFO L276 IsEmpty]: Start isEmpty. Operand 4134 states and 6332 transitions. [2023-03-31 23:37:27,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-03-31 23:37:27,435 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:37:27,435 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:37:27,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 23:37:27,436 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:37:27,436 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:37:27,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1984695772, now seen corresponding path program 1 times [2023-03-31 23:37:27,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:37:27,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68464420] [2023-03-31 23:37:27,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:37:27,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:37:27,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:37:27,598 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-03-31 23:37:27,598 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:37:27,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68464420] [2023-03-31 23:37:27,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68464420] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:37:27,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:37:27,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 23:37:27,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659348182] [2023-03-31 23:37:27,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:37:27,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 23:37:27,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:37:27,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 23:37:27,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 23:37:27,600 INFO L87 Difference]: Start difference. First operand 4134 states and 6332 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 4 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) [2023-03-31 23:37:28,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:37:28,889 INFO L93 Difference]: Finished difference Result 11961 states and 18681 transitions. [2023-03-31 23:37:28,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 23:37:28,893 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 4 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) Word has length 148 [2023-03-31 23:37:28,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:37:28,992 INFO L225 Difference]: With dead ends: 11961 [2023-03-31 23:37:28,992 INFO L226 Difference]: Without dead ends: 7942 [2023-03-31 23:37:29,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 23:37:29,015 INFO L413 NwaCegarLoop]: 1421 mSDtfsCounter, 1458 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 2310 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-03-31 23:37:29,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1458 Valid, 2310 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-03-31 23:37:29,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7942 states. [2023-03-31 23:37:29,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7942 to 7921. [2023-03-31 23:37:29,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7921 states, 5010 states have (on average 1.4904191616766467) internal successors, (7467), 5383 states have internal predecessors, (7467), 2134 states have call successors, (2134), 734 states have call predecessors, (2134), 776 states have return successors, (2576), 2075 states have call predecessors, (2576), 2123 states have call successors, (2576) [2023-03-31 23:37:29,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7921 states to 7921 states and 12177 transitions. [2023-03-31 23:37:29,690 INFO L78 Accepts]: Start accepts. Automaton has 7921 states and 12177 transitions. Word has length 148 [2023-03-31 23:37:29,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:37:29,690 INFO L495 AbstractCegarLoop]: Abstraction has 7921 states and 12177 transitions. [2023-03-31 23:37:29,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 4 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) [2023-03-31 23:37:29,691 INFO L276 IsEmpty]: Start isEmpty. Operand 7921 states and 12177 transitions. [2023-03-31 23:37:29,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-03-31 23:37:29,715 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:37:29,715 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:37:29,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 23:37:29,716 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:37:29,716 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:37:29,716 INFO L85 PathProgramCache]: Analyzing trace with hash -471826672, now seen corresponding path program 1 times [2023-03-31 23:37:29,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:37:29,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15529969] [2023-03-31 23:37:29,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:37:29,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:37:29,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:37:30,171 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-03-31 23:37:30,171 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:37:30,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15529969] [2023-03-31 23:37:30,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15529969] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:37:30,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:37:30,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 23:37:30,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686686648] [2023-03-31 23:37:30,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:37:30,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 23:37:30,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:37:30,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 23:37:30,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-03-31 23:37:30,174 INFO L87 Difference]: Start difference. First operand 7921 states and 12177 transitions. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (31), 5 states have call predecessors, (31), 2 states have call successors, (31) [2023-03-31 23:37:30,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:37:30,802 INFO L93 Difference]: Finished difference Result 9897 states and 15234 transitions. [2023-03-31 23:37:30,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-03-31 23:37:30,803 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (31), 5 states have call predecessors, (31), 2 states have call successors, (31) Word has length 148 [2023-03-31 23:37:30,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:37:30,871 INFO L225 Difference]: With dead ends: 9897 [2023-03-31 23:37:30,871 INFO L226 Difference]: Without dead ends: 8029 [2023-03-31 23:37:30,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-03-31 23:37:30,890 INFO L413 NwaCegarLoop]: 751 mSDtfsCounter, 7 mSDsluCounter, 5214 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 5965 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 23:37:30,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 5965 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 23:37:30,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8029 states. [2023-03-31 23:37:31,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8029 to 7961. [2023-03-31 23:37:31,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7961 states, 5038 states have (on average 1.4876935291782454) internal successors, (7495), 5411 states have internal predecessors, (7495), 2134 states have call successors, (2134), 734 states have call predecessors, (2134), 788 states have return successors, (2592), 2087 states have call predecessors, (2592), 2123 states have call successors, (2592) [2023-03-31 23:37:31,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7961 states to 7961 states and 12221 transitions. [2023-03-31 23:37:31,484 INFO L78 Accepts]: Start accepts. Automaton has 7961 states and 12221 transitions. Word has length 148 [2023-03-31 23:37:31,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:37:31,486 INFO L495 AbstractCegarLoop]: Abstraction has 7961 states and 12221 transitions. [2023-03-31 23:37:31,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (31), 5 states have call predecessors, (31), 2 states have call successors, (31) [2023-03-31 23:37:31,486 INFO L276 IsEmpty]: Start isEmpty. Operand 7961 states and 12221 transitions. [2023-03-31 23:37:31,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-03-31 23:37:31,508 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:37:31,509 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 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] [2023-03-31 23:37:31,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-03-31 23:37:31,509 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:37:31,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:37:31,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1573096445, now seen corresponding path program 1 times [2023-03-31 23:37:31,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:37:31,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367215300] [2023-03-31 23:37:31,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:37:31,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:37:31,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:37:31,905 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-03-31 23:37:31,905 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:37:31,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367215300] [2023-03-31 23:37:31,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367215300] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:37:31,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:37:31,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 23:37:31,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039125554] [2023-03-31 23:37:31,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:37:31,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 23:37:31,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:37:31,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 23:37:31,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-03-31 23:37:31,907 INFO L87 Difference]: Start difference. First operand 7961 states and 12221 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (32), 4 states have call predecessors, (32), 2 states have call successors, (32) [2023-03-31 23:37:33,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:37:33,045 INFO L93 Difference]: Finished difference Result 8158 states and 12533 transitions. [2023-03-31 23:37:33,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 23:37:33,046 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (32), 4 states have call predecessors, (32), 2 states have call successors, (32) Word has length 152 [2023-03-31 23:37:33,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:37:33,100 INFO L225 Difference]: With dead ends: 8158 [2023-03-31 23:37:33,101 INFO L226 Difference]: Without dead ends: 8129 [2023-03-31 23:37:33,109 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 [2023-03-31 23:37:33,110 INFO L413 NwaCegarLoop]: 746 mSDtfsCounter, 803 mSDsluCounter, 1656 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 2402 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-31 23:37:33,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [804 Valid, 2402 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-31 23:37:33,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8129 states. [2023-03-31 23:37:33,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8129 to 7993. [2023-03-31 23:37:33,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7993 states, 5070 states have (on average 1.4846153846153847) internal successors, (7527), 5443 states have internal predecessors, (7527), 2134 states have call successors, (2134), 734 states have call predecessors, (2134), 788 states have return successors, (2592), 2087 states have call predecessors, (2592), 2123 states have call successors, (2592) [2023-03-31 23:37:33,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7993 states to 7993 states and 12253 transitions. [2023-03-31 23:37:33,822 INFO L78 Accepts]: Start accepts. Automaton has 7993 states and 12253 transitions. Word has length 152 [2023-03-31 23:37:33,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:37:33,822 INFO L495 AbstractCegarLoop]: Abstraction has 7993 states and 12253 transitions. [2023-03-31 23:37:33,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (32), 4 states have call predecessors, (32), 2 states have call successors, (32) [2023-03-31 23:37:33,823 INFO L276 IsEmpty]: Start isEmpty. Operand 7993 states and 12253 transitions. [2023-03-31 23:37:33,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-03-31 23:37:33,850 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:37:33,850 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:37:33,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-03-31 23:37:33,851 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:37:33,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:37:33,851 INFO L85 PathProgramCache]: Analyzing trace with hash -2752418, now seen corresponding path program 1 times [2023-03-31 23:37:33,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:37:33,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914493347] [2023-03-31 23:37:33,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:37:33,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:37:33,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:37:34,493 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-03-31 23:37:34,494 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:37:34,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914493347] [2023-03-31 23:37:34,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914493347] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:37:34,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:37:34,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-03-31 23:37:34,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581161152] [2023-03-31 23:37:34,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:37:34,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-31 23:37:34,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:37:34,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-31 23:37:34,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-03-31 23:37:34,497 INFO L87 Difference]: Start difference. First operand 7993 states and 12253 transitions. Second operand has 11 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (38), 2 states have call predecessors, (38), 5 states have return successors, (34), 5 states have call predecessors, (34), 1 states have call successors, (34) [2023-03-31 23:37:35,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:37:35,147 INFO L93 Difference]: Finished difference Result 8030 states and 12301 transitions. [2023-03-31 23:37:35,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-03-31 23:37:35,148 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (38), 2 states have call predecessors, (38), 5 states have return successors, (34), 5 states have call predecessors, (34), 1 states have call successors, (34) Word has length 163 [2023-03-31 23:37:35,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:37:35,211 INFO L225 Difference]: With dead ends: 8030 [2023-03-31 23:37:35,212 INFO L226 Difference]: Without dead ends: 8009 [2023-03-31 23:37:35,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-03-31 23:37:35,222 INFO L413 NwaCegarLoop]: 751 mSDtfsCounter, 11 mSDsluCounter, 6743 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 7494 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 23:37:35,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 7494 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 23:37:35,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8009 states. [2023-03-31 23:37:35,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8009 to 7993. [2023-03-31 23:37:35,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7993 states, 5070 states have (on average 1.4830374753451676) internal successors, (7519), 5443 states have internal predecessors, (7519), 2134 states have call successors, (2134), 734 states have call predecessors, (2134), 788 states have return successors, (2592), 2087 states have call predecessors, (2592), 2123 states have call successors, (2592) [2023-03-31 23:37:35,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7993 states to 7993 states and 12245 transitions. [2023-03-31 23:37:35,795 INFO L78 Accepts]: Start accepts. Automaton has 7993 states and 12245 transitions. Word has length 163 [2023-03-31 23:37:35,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:37:35,795 INFO L495 AbstractCegarLoop]: Abstraction has 7993 states and 12245 transitions. [2023-03-31 23:37:35,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (38), 2 states have call predecessors, (38), 5 states have return successors, (34), 5 states have call predecessors, (34), 1 states have call successors, (34) [2023-03-31 23:37:35,796 INFO L276 IsEmpty]: Start isEmpty. Operand 7993 states and 12245 transitions. [2023-03-31 23:37:35,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-03-31 23:37:35,829 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:37:35,829 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 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] [2023-03-31 23:37:35,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-03-31 23:37:35,829 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:37:35,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:37:35,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1800603020, now seen corresponding path program 1 times [2023-03-31 23:37:35,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:37:35,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226615846] [2023-03-31 23:37:35,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:37:35,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:37:35,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:37:36,460 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-03-31 23:37:36,460 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:37:36,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226615846] [2023-03-31 23:37:36,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226615846] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:37:36,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:37:36,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-03-31 23:37:36,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370569067] [2023-03-31 23:37:36,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:37:36,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-03-31 23:37:36,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:37:36,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-03-31 23:37:36,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-03-31 23:37:36,462 INFO L87 Difference]: Start difference. First operand 7993 states and 12245 transitions. Second operand has 12 states, 10 states have (on average 8.7) internal successors, (87), 9 states have internal predecessors, (87), 3 states have call successors, (40), 2 states have call predecessors, (40), 6 states have return successors, (36), 6 states have call predecessors, (36), 2 states have call successors, (36) [2023-03-31 23:37:37,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:37:37,942 INFO L93 Difference]: Finished difference Result 8315 states and 12685 transitions. [2023-03-31 23:37:37,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-03-31 23:37:37,943 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 8.7) internal successors, (87), 9 states have internal predecessors, (87), 3 states have call successors, (40), 2 states have call predecessors, (40), 6 states have return successors, (36), 6 states have call predecessors, (36), 2 states have call successors, (36) Word has length 174 [2023-03-31 23:37:37,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:37:37,997 INFO L225 Difference]: With dead ends: 8315 [2023-03-31 23:37:37,997 INFO L226 Difference]: Without dead ends: 8294 [2023-03-31 23:37:38,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2023-03-31 23:37:38,006 INFO L413 NwaCegarLoop]: 761 mSDtfsCounter, 793 mSDsluCounter, 6043 mSDsCounter, 0 mSdLazyCounter, 1451 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 6804 SdHoareTripleChecker+Invalid, 1461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-03-31 23:37:38,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [796 Valid, 6804 Invalid, 1461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1451 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-03-31 23:37:38,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8294 states. [2023-03-31 23:37:38,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8294 to 8205. [2023-03-31 23:37:38,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8205 states, 5206 states have (on average 1.4773338455628122) internal successors, (7691), 5579 states have internal predecessors, (7691), 2182 states have call successors, (2182), 766 states have call predecessors, (2182), 816 states have return successors, (2660), 2131 states have call predecessors, (2660), 2171 states have call successors, (2660) [2023-03-31 23:37:38,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8205 states to 8205 states and 12533 transitions. [2023-03-31 23:37:38,729 INFO L78 Accepts]: Start accepts. Automaton has 8205 states and 12533 transitions. Word has length 174 [2023-03-31 23:37:38,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:37:38,729 INFO L495 AbstractCegarLoop]: Abstraction has 8205 states and 12533 transitions. [2023-03-31 23:37:38,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 8.7) internal successors, (87), 9 states have internal predecessors, (87), 3 states have call successors, (40), 2 states have call predecessors, (40), 6 states have return successors, (36), 6 states have call predecessors, (36), 2 states have call successors, (36) [2023-03-31 23:37:38,730 INFO L276 IsEmpty]: Start isEmpty. Operand 8205 states and 12533 transitions. [2023-03-31 23:37:38,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-03-31 23:37:38,763 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:37:38,764 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 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] [2023-03-31 23:37:38,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-03-31 23:37:38,764 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:37:38,765 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:37:38,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1984281172, now seen corresponding path program 1 times [2023-03-31 23:37:38,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:37:38,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856777614] [2023-03-31 23:37:38,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:37:38,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:37:38,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:37:38,918 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-03-31 23:37:38,919 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:37:38,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856777614] [2023-03-31 23:37:38,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856777614] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:37:38,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:37:38,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 23:37:38,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484209617] [2023-03-31 23:37:38,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:37:38,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 23:37:38,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:37:38,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 23:37:38,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 23:37:38,921 INFO L87 Difference]: Start difference. First operand 8205 states and 12533 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2023-03-31 23:37:39,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:37:39,936 INFO L93 Difference]: Finished difference Result 23518 states and 36249 transitions. [2023-03-31 23:37:39,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 23:37:39,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 178 [2023-03-31 23:37:39,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:37:40,038 INFO L225 Difference]: With dead ends: 23518 [2023-03-31 23:37:40,039 INFO L226 Difference]: Without dead ends: 15513 [2023-03-31 23:37:40,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 23:37:40,086 INFO L413 NwaCegarLoop]: 814 mSDtfsCounter, 736 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 1500 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 23:37:40,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 1500 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 23:37:40,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15513 states. [2023-03-31 23:37:40,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15513 to 15271. [2023-03-31 23:37:41,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15271 states, 9939 states have (on average 1.4910956836703895) internal successors, (14820), 10623 states have internal predecessors, (14820), 3823 states have call successors, (3823), 1391 states have call predecessors, (3823), 1508 states have return successors, (4876), 3664 states have call predecessors, (4876), 3811 states have call successors, (4876) [2023-03-31 23:37:41,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15271 states to 15271 states and 23519 transitions. [2023-03-31 23:37:41,111 INFO L78 Accepts]: Start accepts. Automaton has 15271 states and 23519 transitions. Word has length 178 [2023-03-31 23:37:41,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:37:41,112 INFO L495 AbstractCegarLoop]: Abstraction has 15271 states and 23519 transitions. [2023-03-31 23:37:41,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2023-03-31 23:37:41,112 INFO L276 IsEmpty]: Start isEmpty. Operand 15271 states and 23519 transitions. [2023-03-31 23:37:41,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-03-31 23:37:41,146 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:37:41,146 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 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, 1] [2023-03-31 23:37:41,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-03-31 23:37:41,147 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:37:41,147 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:37:41,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1382070764, now seen corresponding path program 1 times [2023-03-31 23:37:41,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:37:41,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720903783] [2023-03-31 23:37:41,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:37:41,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:37:41,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:37:41,298 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-03-31 23:37:41,298 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:37:41,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720903783] [2023-03-31 23:37:41,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720903783] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:37:41,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:37:41,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 23:37:41,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6602938] [2023-03-31 23:37:41,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:37:41,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 23:37:41,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:37:41,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 23:37:41,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 23:37:41,301 INFO L87 Difference]: Start difference. First operand 15271 states and 23519 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2023-03-31 23:37:43,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:37:43,078 INFO L93 Difference]: Finished difference Result 44670 states and 69514 transitions. [2023-03-31 23:37:43,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 23:37:43,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 179 [2023-03-31 23:37:43,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:37:43,293 INFO L225 Difference]: With dead ends: 44670 [2023-03-31 23:37:43,294 INFO L226 Difference]: Without dead ends: 29647 [2023-03-31 23:37:43,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 23:37:43,381 INFO L413 NwaCegarLoop]: 817 mSDtfsCounter, 735 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 1506 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 23:37:43,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [735 Valid, 1506 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 23:37:43,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29647 states. [2023-03-31 23:37:45,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29647 to 29404. [2023-03-31 23:37:45,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29404 states, 19406 states have (on average 1.4974750077295682) internal successors, (29060), 20712 states have internal predecessors, (29060), 7105 states have call successors, (7105), 2641 states have call predecessors, (7105), 2892 states have return successors, (9556), 6730 states have call predecessors, (9556), 7091 states have call successors, (9556) [2023-03-31 23:37:45,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29404 states to 29404 states and 45721 transitions. [2023-03-31 23:37:45,676 INFO L78 Accepts]: Start accepts. Automaton has 29404 states and 45721 transitions. Word has length 179 [2023-03-31 23:37:45,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:37:45,676 INFO L495 AbstractCegarLoop]: Abstraction has 29404 states and 45721 transitions. [2023-03-31 23:37:45,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2023-03-31 23:37:45,677 INFO L276 IsEmpty]: Start isEmpty. Operand 29404 states and 45721 transitions. [2023-03-31 23:37:45,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-03-31 23:37:45,705 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:37:45,705 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 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, 1, 1] [2023-03-31 23:37:45,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-03-31 23:37:45,706 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:37:45,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:37:45,706 INFO L85 PathProgramCache]: Analyzing trace with hash -106578794, now seen corresponding path program 1 times [2023-03-31 23:37:45,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:37:45,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637506439] [2023-03-31 23:37:45,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:37:45,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:37:45,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:37:45,856 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-03-31 23:37:45,856 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:37:45,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637506439] [2023-03-31 23:37:45,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637506439] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:37:45,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:37:45,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 23:37:45,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788337347] [2023-03-31 23:37:45,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:37:45,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 23:37:45,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:37:45,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 23:37:45,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 23:37:45,858 INFO L87 Difference]: Start difference. First operand 29404 states and 45721 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 3 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2023-03-31 23:37:49,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:37:49,115 INFO L93 Difference]: Finished difference Result 86975 states and 137627 transitions. [2023-03-31 23:37:49,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 23:37:49,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 3 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 180 [2023-03-31 23:37:49,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:37:49,646 INFO L225 Difference]: With dead ends: 86975 [2023-03-31 23:37:49,646 INFO L226 Difference]: Without dead ends: 57915 [2023-03-31 23:37:49,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 23:37:49,751 INFO L413 NwaCegarLoop]: 820 mSDtfsCounter, 734 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 1512 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 23:37:49,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 1512 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 23:37:49,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57915 states. [2023-03-31 23:37:52,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57915 to 57671. [2023-03-31 23:37:52,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57671 states, 38341 states have (on average 1.4997522234683498) internal successors, (57502), 40891 states have internal predecessors, (57502), 13669 states have call successors, (13669), 5141 states have call predecessors, (13669), 5660 states have return successors, (20092), 12862 states have call predecessors, (20092), 13651 states have call successors, (20092) [2023-03-31 23:37:53,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57671 states to 57671 states and 91263 transitions. [2023-03-31 23:37:53,181 INFO L78 Accepts]: Start accepts. Automaton has 57671 states and 91263 transitions. Word has length 180 [2023-03-31 23:37:53,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:37:53,182 INFO L495 AbstractCegarLoop]: Abstraction has 57671 states and 91263 transitions. [2023-03-31 23:37:53,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 3 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2023-03-31 23:37:53,182 INFO L276 IsEmpty]: Start isEmpty. Operand 57671 states and 91263 transitions. [2023-03-31 23:37:53,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-03-31 23:37:53,211 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:37:53,212 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 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, 1, 1, 1] [2023-03-31 23:37:53,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-03-31 23:37:53,212 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:37:53,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:37:53,213 INFO L85 PathProgramCache]: Analyzing trace with hash 989929070, now seen corresponding path program 1 times [2023-03-31 23:37:53,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:37:53,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055688875] [2023-03-31 23:37:53,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:37:53,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:37:53,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:37:53,361 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-03-31 23:37:53,361 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:37:53,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055688875] [2023-03-31 23:37:53,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055688875] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:37:53,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:37:53,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 23:37:53,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508567111] [2023-03-31 23:37:53,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:37:53,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 23:37:53,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:37:53,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 23:37:53,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 23:37:53,363 INFO L87 Difference]: Start difference. First operand 57671 states and 91263 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2023-03-31 23:37:59,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:37:59,311 INFO L93 Difference]: Finished difference Result 171586 states and 279856 transitions. [2023-03-31 23:37:59,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 23:37:59,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 181 [2023-03-31 23:37:59,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:38:00,136 INFO L225 Difference]: With dead ends: 171586 [2023-03-31 23:38:00,136 INFO L226 Difference]: Without dead ends: 114451 [2023-03-31 23:38:00,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 23:38:00,309 INFO L413 NwaCegarLoop]: 823 mSDtfsCounter, 733 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 1518 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 23:38:00,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [733 Valid, 1518 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 23:38:00,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114451 states.