/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/product-lines/elevator_spec1_product23.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 05:34:38,325 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 05:34:38,327 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 05:34:38,364 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 05:34:38,365 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 05:34:38,367 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 05:34:38,370 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 05:34:38,372 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 05:34:38,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 05:34:38,378 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 05:34:38,379 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 05:34:38,381 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 05:34:38,382 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 05:34:38,384 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 05:34:38,384 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 05:34:38,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 05:34:38,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 05:34:38,387 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 05:34:38,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 05:34:38,393 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 05:34:38,394 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 05:34:38,395 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 05:34:38,396 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 05:34:38,397 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 05:34:38,405 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 05:34:38,405 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 05:34:38,405 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 05:34:38,407 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 05:34:38,407 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 05:34:38,408 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 05:34:38,408 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 05:34:38,409 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 05:34:38,410 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 05:34:38,410 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 05:34:38,411 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 05:34:38,411 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 05:34:38,412 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 05:34:38,412 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 05:34:38,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 05:34:38,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 05:34:38,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 05:34:38,414 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 05:34:38,443 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 05:34:38,443 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 05:34:38,443 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 05:34:38,444 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 05:34:38,444 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 05:34:38,445 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 05:34:38,445 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 05:34:38,445 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 05:34:38,445 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 05:34:38,445 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 05:34:38,446 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 05:34:38,446 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 05:34:38,446 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 05:34:38,446 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 05:34:38,446 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 05:34:38,447 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 05:34:38,447 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 05:34:38,447 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 05:34:38,448 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 05:34:38,448 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 05:34:38,448 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 05:34:38,448 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 05:34:38,448 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 05:34:38,448 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 05:34:38,448 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 05:34:38,449 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 05:34:38,449 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 05:34:38,449 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 05:34:38,449 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 05:34:38,449 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 05:34:38,450 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 05:34:38,450 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 05:34:38,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 05:34:38,450 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 05:34:38,450 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 05:34:38,451 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 05:34:38,451 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 05:34:38,451 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 05:34:38,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 05:34:38,451 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 05:34:38,451 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 05:34:38,451 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 05:34:38,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 05:34:38,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 05:34:38,681 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 05:34:38,683 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 05:34:38,683 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 05:34:38,684 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product23.cil.c [2023-04-01 05:34:39,905 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 05:34:40,227 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 05:34:40,227 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product23.cil.c [2023-04-01 05:34:40,247 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ddb0236b/f8b01feebe264649a62a92872af1d9c7/FLAG328b328fd [2023-04-01 05:34:40,263 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ddb0236b/f8b01feebe264649a62a92872af1d9c7 [2023-04-01 05:34:40,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 05:34:40,267 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 05:34:40,269 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 05:34:40,269 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 05:34:40,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 05:34:40,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 05:34:40" (1/1) ... [2023-04-01 05:34:40,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@338376fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:34:40, skipping insertion in model container [2023-04-01 05:34:40,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 05:34:40" (1/1) ... [2023-04-01 05:34:40,286 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 05:34:40,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 05:34:40,809 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product23.cil.c[58338,58351] [2023-04-01 05:34:40,852 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 05:34:40,871 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 05:34:40,984 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product23.cil.c[58338,58351] [2023-04-01 05:34:40,994 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 05:34:41,023 INFO L208 MainTranslator]: Completed translation [2023-04-01 05:34:41,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:34:41 WrapperNode [2023-04-01 05:34:41,024 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 05:34:41,025 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 05:34:41,025 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 05:34:41,025 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 05:34:41,035 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:34:41" (1/1) ... [2023-04-01 05:34:41,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:34:41" (1/1) ... [2023-04-01 05:34:41,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:34:41" (1/1) ... [2023-04-01 05:34:41,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:34:41" (1/1) ... [2023-04-01 05:34:41,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:34:41" (1/1) ... [2023-04-01 05:34:41,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:34:41" (1/1) ... [2023-04-01 05:34:41,171 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:34:41" (1/1) ... [2023-04-01 05:34:41,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:34:41" (1/1) ... [2023-04-01 05:34:41,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 05:34:41,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 05:34:41,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 05:34:41,210 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 05:34:41,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:34:41" (1/1) ... [2023-04-01 05:34:41,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 05:34:41,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:34:41,243 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 05:34:41,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 05:34:41,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 05:34:41,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 05:34:41,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-01 05:34:41,285 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 05:34:41,285 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2023-04-01 05:34:41,285 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2023-04-01 05:34:41,285 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-01 05:34:41,286 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-01 05:34:41,286 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-01 05:34:41,286 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-01 05:34:41,286 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-01 05:34:41,286 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-01 05:34:41,286 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2023-04-01 05:34:41,286 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2023-04-01 05:34:41,286 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2023-04-01 05:34:41,286 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2023-04-01 05:34:41,286 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2023-04-01 05:34:41,286 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-04-01 05:34:41,287 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2023-04-01 05:34:41,287 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-04-01 05:34:41,287 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2023-04-01 05:34:41,287 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2023-04-01 05:34:41,287 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-04-01 05:34:41,287 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2023-04-01 05:34:41,287 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-01 05:34:41,288 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2023-04-01 05:34:41,288 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2023-04-01 05:34:41,288 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2023-04-01 05:34:41,288 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-01 05:34:41,288 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2023-04-01 05:34:41,288 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-01 05:34:41,288 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-01 05:34:41,288 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 05:34:41,288 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-04-01 05:34:41,288 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-04-01 05:34:41,288 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-04-01 05:34:41,289 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-01 05:34:41,289 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-01 05:34:41,289 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-01 05:34:41,289 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-01 05:34:41,290 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-01 05:34:41,290 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2023-04-01 05:34:41,290 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2023-04-01 05:34:41,290 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-04-01 05:34:41,290 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2023-04-01 05:34:41,291 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-04-01 05:34:41,291 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2023-04-01 05:34:41,291 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-04-01 05:34:41,291 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-04-01 05:34:41,291 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2023-04-01 05:34:41,292 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-04-01 05:34:41,292 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-04-01 05:34:41,292 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-04-01 05:34:41,292 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-04-01 05:34:41,292 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2023-04-01 05:34:41,292 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2023-04-01 05:34:41,293 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2023-04-01 05:34:41,293 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2023-04-01 05:34:41,293 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull [2023-04-01 05:34:41,293 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-04-01 05:34:41,293 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2023-04-01 05:34:41,293 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-04-01 05:34:41,293 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2023-04-01 05:34:41,293 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2023-04-01 05:34:41,293 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2023-04-01 05:34:41,294 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-04-01 05:34:41,294 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2023-04-01 05:34:41,294 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-01 05:34:41,294 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2023-04-01 05:34:41,294 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2023-04-01 05:34:41,295 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2023-04-01 05:34:41,295 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2023-04-01 05:34:41,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-01 05:34:41,295 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2023-04-01 05:34:41,295 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-04-01 05:34:41,295 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-04-01 05:34:41,295 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2023-04-01 05:34:41,295 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-04-01 05:34:41,296 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-04-01 05:34:41,296 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-04-01 05:34:41,296 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-04-01 05:34:41,296 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 05:34:41,297 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 05:34:41,297 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 05:34:41,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 05:34:41,297 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 05:34:41,297 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-04-01 05:34:41,298 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-04-01 05:34:41,298 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-01 05:34:41,298 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-04-01 05:34:41,298 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2023-04-01 05:34:41,298 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2023-04-01 05:34:41,298 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2023-04-01 05:34:41,298 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2023-04-01 05:34:41,298 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2023-04-01 05:34:41,298 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 05:34:41,298 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 05:34:41,298 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-01 05:34:41,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 05:34:41,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 05:34:41,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 05:34:41,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 05:34:41,299 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-01 05:34:41,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 05:34:41,299 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-01 05:34:41,299 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-01 05:34:41,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 05:34:41,300 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-01 05:34:41,300 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-01 05:34:41,300 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-01 05:34:41,300 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-01 05:34:41,300 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-04-01 05:34:41,300 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-04-01 05:34:41,300 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2023-04-01 05:34:41,300 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2023-04-01 05:34:41,301 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2023-04-01 05:34:41,301 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2023-04-01 05:34:41,301 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 05:34:41,301 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2023-04-01 05:34:41,301 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-04-01 05:34:41,302 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2023-04-01 05:34:41,302 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-04-01 05:34:41,304 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2023-04-01 05:34:41,305 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2023-04-01 05:34:41,311 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-04-01 05:34:41,311 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2023-04-01 05:34:41,311 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2023-04-01 05:34:41,311 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-01 05:34:41,311 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2023-04-01 05:34:41,311 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2023-04-01 05:34:41,311 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2023-04-01 05:34:41,312 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-01 05:34:41,312 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2023-04-01 05:34:41,312 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-01 05:34:41,312 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-01 05:34:41,312 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-01 05:34:41,312 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-01 05:34:41,312 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-01 05:34:41,312 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-01 05:34:41,312 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 05:34:41,312 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-04-01 05:34:41,312 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-04-01 05:34:41,312 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-01 05:34:41,312 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-01 05:34:41,313 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-04-01 05:34:41,313 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-04-01 05:34:41,313 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-04-01 05:34:41,313 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-04-01 05:34:41,313 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-04-01 05:34:41,313 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-04-01 05:34:41,313 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2023-04-01 05:34:41,313 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2023-04-01 05:34:41,313 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2023-04-01 05:34:41,313 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-04-01 05:34:41,313 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2023-04-01 05:34:41,313 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2023-04-01 05:34:41,313 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2023-04-01 05:34:41,313 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2023-04-01 05:34:41,314 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-04-01 05:34:41,314 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-04-01 05:34:41,314 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2023-04-01 05:34:41,314 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-04-01 05:34:41,314 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2023-04-01 05:34:41,314 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2023-04-01 05:34:41,314 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull [2023-04-01 05:34:41,314 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-04-01 05:34:41,314 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-04-01 05:34:41,314 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2023-04-01 05:34:41,314 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2023-04-01 05:34:41,314 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2023-04-01 05:34:41,314 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-04-01 05:34:41,315 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2023-04-01 05:34:41,315 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2023-04-01 05:34:41,315 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2023-04-01 05:34:41,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 05:34:41,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 05:34:41,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 05:34:41,629 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 05:34:41,632 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 05:34:43,008 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 05:34:43,763 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 05:34:43,764 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-04-01 05:34:43,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 05:34:43 BoogieIcfgContainer [2023-04-01 05:34:43,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 05:34:43,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 05:34:43,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 05:34:43,774 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 05:34:43,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 05:34:40" (1/3) ... [2023-04-01 05:34:43,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@403f7303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 05:34:43, skipping insertion in model container [2023-04-01 05:34:43,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 05:34:41" (2/3) ... [2023-04-01 05:34:43,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@403f7303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 05:34:43, skipping insertion in model container [2023-04-01 05:34:43,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 05:34:43" (3/3) ... [2023-04-01 05:34:43,776 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product23.cil.c [2023-04-01 05:34:43,795 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 05:34:43,796 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 05:34:43,869 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 05:34:43,875 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;@555575e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 05:34:43,875 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 05:34:43,881 INFO L276 IsEmpty]: Start isEmpty. Operand has 595 states, 348 states have (on average 1.4770114942528736) internal successors, (514), 375 states have internal predecessors, (514), 181 states have call successors, (181), 53 states have call predecessors, (181), 53 states have return successors, (181), 172 states have call predecessors, (181), 181 states have call successors, (181) [2023-04-01 05:34:43,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-04-01 05:34:43,905 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:34:43,906 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:34:43,907 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:34:43,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:34:43,911 INFO L85 PathProgramCache]: Analyzing trace with hash -2001184588, now seen corresponding path program 1 times [2023-04-01 05:34:43,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:34:43,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13745196] [2023-04-01 05:34:43,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:34:43,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:34:44,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:34:44,504 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-01 05:34:44,504 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:34:44,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13745196] [2023-04-01 05:34:44,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13745196] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:34:44,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:34:44,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-01 05:34:44,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576934190] [2023-04-01 05:34:44,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:34:44,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-01 05:34:44,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:34:44,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-01 05:34:44,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 05:34:44,548 INFO L87 Difference]: Start difference. First operand has 595 states, 348 states have (on average 1.4770114942528736) internal successors, (514), 375 states have internal predecessors, (514), 181 states have call successors, (181), 53 states have call predecessors, (181), 53 states have return successors, (181), 172 states have call predecessors, (181), 181 states have call successors, (181) Second operand has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2023-04-01 05:34:44,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:34:44,694 INFO L93 Difference]: Finished difference Result 504 states and 744 transitions. [2023-04-01 05:34:44,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-01 05:34:44,704 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) Word has length 135 [2023-04-01 05:34:44,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:34:44,727 INFO L225 Difference]: With dead ends: 504 [2023-04-01 05:34:44,727 INFO L226 Difference]: Without dead ends: 470 [2023-04-01 05:34:44,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 05:34:44,736 INFO L413 NwaCegarLoop]: 664 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 05:34:44,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 664 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 05:34:44,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2023-04-01 05:34:44,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 470. [2023-04-01 05:34:44,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 295 states have (on average 1.5084745762711864) internal successors, (445), 314 states have internal predecessors, (445), 128 states have call successors, (128), 50 states have call predecessors, (128), 46 states have return successors, (120), 117 states have call predecessors, (120), 120 states have call successors, (120) [2023-04-01 05:34:44,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 693 transitions. [2023-04-01 05:34:44,823 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 693 transitions. Word has length 135 [2023-04-01 05:34:44,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:34:44,827 INFO L495 AbstractCegarLoop]: Abstraction has 470 states and 693 transitions. [2023-04-01 05:34:44,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2023-04-01 05:34:44,828 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 693 transitions. [2023-04-01 05:34:44,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-01 05:34:44,842 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:34:44,842 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:34:44,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 05:34:44,843 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:34:44,843 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:34:44,844 INFO L85 PathProgramCache]: Analyzing trace with hash -862571634, now seen corresponding path program 1 times [2023-04-01 05:34:44,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:34:44,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957742997] [2023-04-01 05:34:44,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:34:44,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:34:44,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:34:45,723 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-01 05:34:45,724 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:34:45,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957742997] [2023-04-01 05:34:45,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957742997] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:34:45,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:34:45,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 05:34:45,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394069947] [2023-04-01 05:34:45,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:34:45,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 05:34:45,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:34:45,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 05:34:45,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-01 05:34:45,727 INFO L87 Difference]: Start difference. First operand 470 states and 693 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 5 states have call successors, (31), 4 states have call predecessors, (31), 4 states have return successors, (27), 5 states have call predecessors, (27), 4 states have call successors, (27) [2023-04-01 05:34:48,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:34:48,287 INFO L93 Difference]: Finished difference Result 1315 states and 1990 transitions. [2023-04-01 05:34:48,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-01 05:34:48,288 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 5 states have call successors, (31), 4 states have call predecessors, (31), 4 states have return successors, (27), 5 states have call predecessors, (27), 4 states have call successors, (27) Word has length 136 [2023-04-01 05:34:48,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:34:48,300 INFO L225 Difference]: With dead ends: 1315 [2023-04-01 05:34:48,300 INFO L226 Difference]: Without dead ends: 898 [2023-04-01 05:34:48,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-04-01 05:34:48,311 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 1284 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 3490 mSolverCounterSat, 483 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1378 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 3973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 483 IncrementalHoareTripleChecker+Valid, 3490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-04-01 05:34:48,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1378 Valid, 504 Invalid, 3973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [483 Valid, 3490 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-04-01 05:34:48,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2023-04-01 05:34:48,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 873. [2023-04-01 05:34:48,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 562 states have (on average 1.5266903914590748) internal successors, (858), 595 states have internal predecessors, (858), 230 states have call successors, (230), 83 states have call predecessors, (230), 80 states have return successors, (228), 218 states have call predecessors, (228), 222 states have call successors, (228) [2023-04-01 05:34:48,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1316 transitions. [2023-04-01 05:34:48,406 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1316 transitions. Word has length 136 [2023-04-01 05:34:48,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:34:48,407 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1316 transitions. [2023-04-01 05:34:48,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 5 states have call successors, (31), 4 states have call predecessors, (31), 4 states have return successors, (27), 5 states have call predecessors, (27), 4 states have call successors, (27) [2023-04-01 05:34:48,407 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1316 transitions. [2023-04-01 05:34:48,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-04-01 05:34:48,414 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:34:48,414 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:34:48,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 05:34:48,414 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:34:48,415 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:34:48,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1061252520, now seen corresponding path program 1 times [2023-04-01 05:34:48,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:34:48,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608319084] [2023-04-01 05:34:48,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:34:48,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:34:48,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:34:48,808 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-01 05:34:48,808 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:34:48,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608319084] [2023-04-01 05:34:48,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608319084] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:34:48,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:34:48,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 05:34:48,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937086658] [2023-04-01 05:34:48,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:34:48,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 05:34:48,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:34:48,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 05:34:48,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 05:34:48,810 INFO L87 Difference]: Start difference. First operand 873 states and 1316 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 4 states have call predecessors, (28), 2 states have call successors, (28) [2023-04-01 05:34:49,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:34:49,431 INFO L93 Difference]: Finished difference Result 912 states and 1372 transitions. [2023-04-01 05:34:49,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 05:34:49,432 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 4 states have call predecessors, (28), 2 states have call successors, (28) Word has length 140 [2023-04-01 05:34:49,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:34:49,437 INFO L225 Difference]: With dead ends: 912 [2023-04-01 05:34:49,438 INFO L226 Difference]: Without dead ends: 895 [2023-04-01 05:34:49,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-04-01 05:34:49,439 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 701 mSDsluCounter, 1463 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 2114 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 05:34:49,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 2114 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 05:34:49,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2023-04-01 05:34:49,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 877. [2023-04-01 05:34:49,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 566 states have (on average 1.5229681978798586) internal successors, (862), 599 states have internal predecessors, (862), 230 states have call successors, (230), 83 states have call predecessors, (230), 80 states have return successors, (228), 218 states have call predecessors, (228), 222 states have call successors, (228) [2023-04-01 05:34:49,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1320 transitions. [2023-04-01 05:34:49,490 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1320 transitions. Word has length 140 [2023-04-01 05:34:49,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:34:49,490 INFO L495 AbstractCegarLoop]: Abstraction has 877 states and 1320 transitions. [2023-04-01 05:34:49,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 4 states have call predecessors, (28), 2 states have call successors, (28) [2023-04-01 05:34:49,491 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1320 transitions. [2023-04-01 05:34:49,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-04-01 05:34:49,493 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:34:49,494 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:34:49,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 05:34:49,494 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:34:49,494 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:34:49,494 INFO L85 PathProgramCache]: Analyzing trace with hash -2092213656, now seen corresponding path program 1 times [2023-04-01 05:34:49,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:34:49,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548033987] [2023-04-01 05:34:49,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:34:49,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:34:49,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:34:49,909 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-01 05:34:49,910 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:34:49,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548033987] [2023-04-01 05:34:49,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548033987] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:34:49,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 05:34:49,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-01 05:34:49,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805309416] [2023-04-01 05:34:49,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:34:49,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 05:34:49,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:34:49,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 05:34:49,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-01 05:34:49,912 INFO L87 Difference]: Start difference. First operand 877 states and 1320 transitions. Second operand has 8 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (29), 4 states have call predecessors, (29), 1 states have call successors, (29) [2023-04-01 05:34:50,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:34:50,175 INFO L93 Difference]: Finished difference Result 898 states and 1346 transitions. [2023-04-01 05:34:50,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 05:34:50,176 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (29), 4 states have call predecessors, (29), 1 states have call successors, (29) Word has length 145 [2023-04-01 05:34:50,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:34:50,183 INFO L225 Difference]: With dead ends: 898 [2023-04-01 05:34:50,183 INFO L226 Difference]: Without dead ends: 881 [2023-04-01 05:34:50,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-01 05:34:50,190 INFO L413 NwaCegarLoop]: 654 mSDtfsCounter, 10 mSDsluCounter, 3905 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 4559 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 05:34:50,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 4559 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 05:34:50,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2023-04-01 05:34:50,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 877. [2023-04-01 05:34:50,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 566 states have (on average 1.519434628975265) internal successors, (860), 599 states have internal predecessors, (860), 230 states have call successors, (230), 83 states have call predecessors, (230), 80 states have return successors, (228), 218 states have call predecessors, (228), 222 states have call successors, (228) [2023-04-01 05:34:50,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1318 transitions. [2023-04-01 05:34:50,259 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1318 transitions. Word has length 145 [2023-04-01 05:34:50,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:34:50,262 INFO L495 AbstractCegarLoop]: Abstraction has 877 states and 1318 transitions. [2023-04-01 05:34:50,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (29), 4 states have call predecessors, (29), 1 states have call successors, (29) [2023-04-01 05:34:50,262 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1318 transitions. [2023-04-01 05:34:50,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-04-01 05:34:50,267 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:34:50,267 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:34:50,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 05:34:50,267 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:34:50,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:34:50,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1248242376, now seen corresponding path program 1 times [2023-04-01 05:34:50,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:34:50,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497456804] [2023-04-01 05:34:50,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:34:50,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:34:50,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:34:56,481 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-04-01 05:34:56,481 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:34:56,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497456804] [2023-04-01 05:34:56,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497456804] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 05:34:56,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128985311] [2023-04-01 05:34:56,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:34:56,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:34:56,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:34:56,489 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 05:34:56,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 05:34:57,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:34:57,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 2981 conjuncts, 111 conjunts are in the unsatisfiable core [2023-04-01 05:34:57,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:34:58,163 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-04-01 05:34:58,163 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 05:34:58,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128985311] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 05:34:58,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 05:34:58,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [40] total 52 [2023-04-01 05:34:58,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582703549] [2023-04-01 05:34:58,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 05:34:58,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-01 05:34:58,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 05:34:58,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-01 05:34:58,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=2366, Unknown=0, NotChecked=0, Total=2652 [2023-04-01 05:34:58,166 INFO L87 Difference]: Start difference. First operand 877 states and 1318 transitions. Second operand has 16 states, 10 states have (on average 7.4) internal successors, (74), 13 states have internal predecessors, (74), 8 states have call successors, (36), 4 states have call predecessors, (36), 8 states have return successors, (32), 8 states have call predecessors, (32), 7 states have call successors, (32) [2023-04-01 05:35:01,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 05:35:01,982 INFO L93 Difference]: Finished difference Result 1700 states and 2583 transitions. [2023-04-01 05:35:01,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-01 05:35:01,983 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 10 states have (on average 7.4) internal successors, (74), 13 states have internal predecessors, (74), 8 states have call successors, (36), 4 states have call predecessors, (36), 8 states have return successors, (32), 8 states have call predecessors, (32), 7 states have call successors, (32) Word has length 160 [2023-04-01 05:35:01,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 05:35:01,988 INFO L225 Difference]: With dead ends: 1700 [2023-04-01 05:35:01,988 INFO L226 Difference]: Without dead ends: 876 [2023-04-01 05:35:01,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1044 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=471, Invalid=3689, Unknown=0, NotChecked=0, Total=4160 [2023-04-01 05:35:01,993 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 850 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 7476 mSolverCounterSat, 478 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 1385 SdHoareTripleChecker+Invalid, 7954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 478 IncrementalHoareTripleChecker+Valid, 7476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-04-01 05:35:01,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 1385 Invalid, 7954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [478 Valid, 7476 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-04-01 05:35:01,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2023-04-01 05:35:02,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 870. [2023-04-01 05:35:02,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 562 states have (on average 1.5142348754448398) internal successors, (851), 594 states have internal predecessors, (851), 227 states have call successors, (227), 83 states have call predecessors, (227), 80 states have return successors, (226), 216 states have call predecessors, (226), 220 states have call successors, (226) [2023-04-01 05:35:02,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1304 transitions. [2023-04-01 05:35:02,053 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1304 transitions. Word has length 160 [2023-04-01 05:35:02,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 05:35:02,056 INFO L495 AbstractCegarLoop]: Abstraction has 870 states and 1304 transitions. [2023-04-01 05:35:02,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 10 states have (on average 7.4) internal successors, (74), 13 states have internal predecessors, (74), 8 states have call successors, (36), 4 states have call predecessors, (36), 8 states have return successors, (32), 8 states have call predecessors, (32), 7 states have call successors, (32) [2023-04-01 05:35:02,056 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1304 transitions. [2023-04-01 05:35:02,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-04-01 05:35:02,059 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 05:35:02,059 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 05:35:02,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 05:35:02,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:35:02,269 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 05:35:02,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 05:35:02,270 INFO L85 PathProgramCache]: Analyzing trace with hash -41113156, now seen corresponding path program 1 times [2023-04-01 05:35:02,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 05:35:02,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772275988] [2023-04-01 05:35:02,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:35:02,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 05:35:02,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:35:04,494 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-04-01 05:35:04,494 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 05:35:04,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772275988] [2023-04-01 05:35:04,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772275988] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 05:35:04,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712352911] [2023-04-01 05:35:04,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 05:35:04,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 05:35:04,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 05:35:04,496 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 05:35:04,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 05:35:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 05:35:04,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 2983 conjuncts, 116 conjunts are in the unsatisfiable core [2023-04-01 05:35:05,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 05:35:06,203 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-04-01 05:35:06,203 INFO L327 TraceCheckSpWp]: Computing backward predicates...