/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_spec14_product03.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 23:36:43,201 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 23:36:43,203 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 23:36:43,222 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 23:36:43,223 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 23:36:43,223 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 23:36:43,224 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 23:36:43,225 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 23:36:43,226 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 23:36:43,227 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 23:36:43,227 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 23:36:43,228 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 23:36:43,228 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 23:36:43,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 23:36:43,229 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 23:36:43,230 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 23:36:43,231 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 23:36:43,231 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 23:36:43,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 23:36:43,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 23:36:43,244 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 23:36:43,246 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 23:36:43,246 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 23:36:43,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 23:36:43,249 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 23:36:43,249 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 23:36:43,250 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 23:36:43,250 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 23:36:43,250 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 23:36:43,251 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 23:36:43,251 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 23:36:43,252 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 23:36:43,252 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 23:36:43,253 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 23:36:43,253 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 23:36:43,254 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 23:36:43,254 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 23:36:43,254 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 23:36:43,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 23:36:43,255 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 23:36:43,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 23:36:43,263 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-02 23:36:43,283 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 23:36:43,284 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 23:36:43,284 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 23:36:43,284 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 23:36:43,285 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 23:36:43,285 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 23:36:43,285 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 23:36:43,285 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 23:36:43,286 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 23:36:43,286 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 23:36:43,286 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 23:36:43,287 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 23:36:43,287 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 23:36:43,287 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 23:36:43,287 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 23:36:43,288 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 23:36:43,288 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 23:36:43,288 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 23:36:43,288 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 23:36:43,288 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 23:36:43,289 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 23:36:43,289 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 23:36:43,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 23:36:43,289 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 23:36:43,289 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 23:36:43,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 23:36:43,289 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 23:36:43,289 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 23:36:43,289 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 23:36:43,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 23:36:43,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 23:36:43,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 23:36:43,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 23:36:43,290 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 23:36:43,290 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 23:36:43,290 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 23:36:43,290 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 23:36:43,291 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 23:36:43,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 23:36:43,291 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 23:36:43,291 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 23:36:43,291 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 23:36:43,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 23:36:43,528 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 23:36:43,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 23:36:43,531 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 23:36:43,531 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 23:36:43,532 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec14_product03.cil.c [2023-04-02 23:36:44,612 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 23:36:44,902 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 23:36:44,902 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec14_product03.cil.c [2023-04-02 23:36:44,920 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc3b804d4/c3ad8114cc5c4667830097a3a625d196/FLAGc418d16d3 [2023-04-02 23:36:44,931 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc3b804d4/c3ad8114cc5c4667830097a3a625d196 [2023-04-02 23:36:44,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 23:36:44,934 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 23:36:44,935 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 23:36:44,935 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 23:36:44,938 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 23:36:44,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 11:36:44" (1/1) ... [2023-04-02 23:36:44,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@687567b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:36:44, skipping insertion in model container [2023-04-02 23:36:44,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 11:36:44" (1/1) ... [2023-04-02 23:36:44,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 23:36:45,007 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 23:36:45,397 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_spec14_product03.cil.c[68958,68971] [2023-04-02 23:36:45,401 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 23:36:45,413 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 23:36:45,502 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_spec14_product03.cil.c[68958,68971] [2023-04-02 23:36:45,502 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 23:36:45,527 INFO L208 MainTranslator]: Completed translation [2023-04-02 23:36:45,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:36:45 WrapperNode [2023-04-02 23:36:45,527 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 23:36:45,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 23:36:45,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 23:36:45,529 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 23:36:45,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:36:45" (1/1) ... [2023-04-02 23:36:45,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:36:45" (1/1) ... [2023-04-02 23:36:45,557 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:36:45" (1/1) ... [2023-04-02 23:36:45,557 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:36:45" (1/1) ... [2023-04-02 23:36:45,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:36:45" (1/1) ... [2023-04-02 23:36:45,610 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:36:45" (1/1) ... [2023-04-02 23:36:45,615 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:36:45" (1/1) ... [2023-04-02 23:36:45,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:36:45" (1/1) ... [2023-04-02 23:36:45,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 23:36:45,632 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 23:36:45,632 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 23:36:45,632 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 23:36:45,633 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:36:45" (1/1) ... [2023-04-02 23:36:45,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 23:36:45,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:36:45,703 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 23:36:45,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 23:36:45,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 23:36:45,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 23:36:45,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-02 23:36:45,744 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 23:36:45,744 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-04-02 23:36:45,745 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-04-02 23:36:45,745 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-04-02 23:36:45,745 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2023-04-02 23:36:45,745 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2023-04-02 23:36:45,745 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2023-04-02 23:36:45,745 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-04-02 23:36:45,746 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-04-02 23:36:45,746 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2023-04-02 23:36:45,746 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-04-02 23:36:45,746 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-04-02 23:36:45,746 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-04-02 23:36:45,747 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-04-02 23:36:45,747 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification14_spec__1 [2023-04-02 23:36:45,747 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-02 23:36:45,747 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2023-04-02 23:36:45,747 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-04-02 23:36:45,747 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2023-04-02 23:36:45,747 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-04-02 23:36:45,747 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2023-04-02 23:36:45,747 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2023-04-02 23:36:45,747 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-04-02 23:36:45,748 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2023-04-02 23:36:45,748 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-02 23:36:45,748 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2023-04-02 23:36:45,748 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2023-04-02 23:36:45,748 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2023-04-02 23:36:45,748 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-02 23:36:45,748 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2023-04-02 23:36:45,748 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-02 23:36:45,748 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-02 23:36:45,748 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 23:36:45,748 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-02 23:36:45,749 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-02 23:36:45,749 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-02 23:36:45,749 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-02 23:36:45,749 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-02 23:36:45,749 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-02 23:36:45,749 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-02 23:36:45,749 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-02 23:36:45,750 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-02 23:36:45,750 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-02 23:36:45,751 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2023-04-02 23:36:45,751 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2023-04-02 23:36:45,751 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-04-02 23:36:45,751 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-04-02 23:36:45,751 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-04-02 23:36:45,751 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-04-02 23:36:45,751 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2023-04-02 23:36:45,751 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-04-02 23:36:45,752 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-04-02 23:36:45,752 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-04-02 23:36:45,752 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-04-02 23:36:45,752 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2023-04-02 23:36:45,752 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2023-04-02 23:36:45,777 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2023-04-02 23:36:45,777 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__base [2023-04-02 23:36:45,777 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-04-02 23:36:45,777 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2023-04-02 23:36:45,777 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-04-02 23:36:45,778 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__base [2023-04-02 23:36:45,778 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2023-04-02 23:36:45,778 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-04-02 23:36:45,778 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2023-04-02 23:36:45,778 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-02 23:36:45,778 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2023-04-02 23:36:45,778 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2023-04-02 23:36:45,778 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2023-04-02 23:36:45,778 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2023-04-02 23:36:45,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-02 23:36:45,778 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 23:36:45,778 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 23:36:45,778 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 23:36:45,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 23:36:45,779 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 23:36:45,779 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-04-02 23:36:45,779 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-04-02 23:36:45,779 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-04-02 23:36:45,779 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-04-02 23:36:45,779 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-02 23:36:45,779 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-04-02 23:36:45,779 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2023-04-02 23:36:45,779 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2023-04-02 23:36:45,779 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2023-04-02 23:36:45,779 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2023-04-02 23:36:45,779 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2023-04-02 23:36:45,779 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-04-02 23:36:45,779 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-04-02 23:36:45,779 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2023-04-02 23:36:45,780 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-04-02 23:36:45,780 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-04-02 23:36:45,780 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-04-02 23:36:45,780 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2023-04-02 23:36:45,780 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-02 23:36:45,780 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-04-02 23:36:45,780 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-04-02 23:36:45,780 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2023-04-02 23:36:45,780 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2023-04-02 23:36:45,780 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification14_spec__1 [2023-04-02 23:36:45,780 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-04-02 23:36:45,780 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2023-04-02 23:36:45,780 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-04-02 23:36:45,780 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-02 23:36:45,780 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-02 23:36:45,781 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-02 23:36:45,781 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2023-04-02 23:36:45,781 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2023-04-02 23:36:45,781 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-04-02 23:36:45,781 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2023-04-02 23:36:45,781 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2023-04-02 23:36:45,781 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2023-04-02 23:36:45,781 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2023-04-02 23:36:45,781 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2023-04-02 23:36:45,781 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2023-04-02 23:36:45,781 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-02 23:36:45,781 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2023-04-02 23:36:45,781 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-02 23:36:45,781 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-02 23:36:45,781 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-02 23:36:45,781 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-02 23:36:45,782 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-02 23:36:45,782 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 23:36:45,782 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-02 23:36:45,782 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-02 23:36:45,782 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-02 23:36:45,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-02 23:36:45,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-02 23:36:45,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 23:36:45,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-02 23:36:45,782 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-02 23:36:45,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 23:36:45,782 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-02 23:36:45,782 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-02 23:36:45,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 23:36:45,782 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-02 23:36:45,782 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-02 23:36:45,782 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-02 23:36:45,783 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-02 23:36:45,783 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-02 23:36:45,783 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-04-02 23:36:45,783 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2023-04-02 23:36:45,783 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2023-04-02 23:36:45,783 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-04-02 23:36:45,783 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-04-02 23:36:45,783 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-04-02 23:36:45,783 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2023-04-02 23:36:45,783 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-04-02 23:36:45,783 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2023-04-02 23:36:45,783 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__base [2023-04-02 23:36:45,783 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-04-02 23:36:45,783 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-04-02 23:36:45,783 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__base [2023-04-02 23:36:45,784 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2023-04-02 23:36:45,784 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-04-02 23:36:45,784 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2023-04-02 23:36:45,784 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2023-04-02 23:36:45,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 23:36:45,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 23:36:45,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 23:36:46,017 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 23:36:46,019 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 23:36:46,932 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 23:36:47,553 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 23:36:47,554 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-04-02 23:36:47,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 11:36:47 BoogieIcfgContainer [2023-04-02 23:36:47,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 23:36:47,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 23:36:47,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 23:36:47,564 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 23:36:47,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 11:36:44" (1/3) ... [2023-04-02 23:36:47,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3758eda9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 11:36:47, skipping insertion in model container [2023-04-02 23:36:47,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:36:45" (2/3) ... [2023-04-02 23:36:47,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3758eda9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 11:36:47, skipping insertion in model container [2023-04-02 23:36:47,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 11:36:47" (3/3) ... [2023-04-02 23:36:47,566 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product03.cil.c [2023-04-02 23:36:47,580 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 23:36:47,580 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 23:36:47,637 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 23:36:47,643 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;@48e4e4e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 23:36:47,644 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 23:36:47,651 INFO L276 IsEmpty]: Start isEmpty. Operand has 528 states, 307 states have (on average 1.478827361563518) internal successors, (454), 330 states have internal predecessors, (454), 163 states have call successors, (163), 46 states have call predecessors, (163), 46 states have return successors, (163), 158 states have call predecessors, (163), 163 states have call successors, (163) [2023-04-02 23:36:47,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-04-02 23:36:47,674 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:36:47,675 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:36:47,676 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:36:47,680 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:36:47,681 INFO L85 PathProgramCache]: Analyzing trace with hash 2022533267, now seen corresponding path program 1 times [2023-04-02 23:36:47,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:36:47,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302701144] [2023-04-02 23:36:47,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:36:47,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:36:47,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:36:48,655 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 23:36:48,655 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:36:48,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302701144] [2023-04-02 23:36:48,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302701144] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:36:48,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:36:48,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 23:36:48,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503718174] [2023-04-02 23:36:48,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:36:48,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 23:36:48,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:36:48,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 23:36:48,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 23:36:48,698 INFO L87 Difference]: Start difference. First operand has 528 states, 307 states have (on average 1.478827361563518) internal successors, (454), 330 states have internal predecessors, (454), 163 states have call successors, (163), 46 states have call predecessors, (163), 46 states have return successors, (163), 158 states have call predecessors, (163), 163 states have call successors, (163) Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-04-02 23:36:49,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:36:49,319 INFO L93 Difference]: Finished difference Result 1186 states and 1810 transitions. [2023-04-02 23:36:49,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 23:36:49,321 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 110 [2023-04-02 23:36:49,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:36:49,334 INFO L225 Difference]: With dead ends: 1186 [2023-04-02 23:36:49,334 INFO L226 Difference]: Without dead ends: 780 [2023-04-02 23:36:49,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 23:36:49,342 INFO L413 NwaCegarLoop]: 685 mSDtfsCounter, 586 mSDsluCounter, 1702 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 2387 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 23:36:49,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [586 Valid, 2387 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 23:36:49,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2023-04-02 23:36:49,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 773. [2023-04-02 23:36:49,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 773 states, 494 states have (on average 1.5202429149797572) internal successors, (751), 523 states have internal predecessors, (751), 208 states have call successors, (208), 75 states have call predecessors, (208), 70 states have return successors, (211), 198 states have call predecessors, (211), 202 states have call successors, (211) [2023-04-02 23:36:49,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 1170 transitions. [2023-04-02 23:36:49,419 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 1170 transitions. Word has length 110 [2023-04-02 23:36:49,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:36:49,420 INFO L495 AbstractCegarLoop]: Abstraction has 773 states and 1170 transitions. [2023-04-02 23:36:49,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-04-02 23:36:49,420 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 1170 transitions. [2023-04-02 23:36:49,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-04-02 23:36:49,423 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:36:49,423 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:36:49,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 23:36:49,424 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:36:49,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:36:49,424 INFO L85 PathProgramCache]: Analyzing trace with hash -606783599, now seen corresponding path program 1 times [2023-04-02 23:36:49,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:36:49,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329792599] [2023-04-02 23:36:49,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:36:49,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:36:49,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:36:49,873 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 23:36:49,874 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:36:49,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329792599] [2023-04-02 23:36:49,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329792599] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:36:49,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:36:49,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 23:36:49,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117564490] [2023-04-02 23:36:49,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:36:49,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 23:36:49,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:36:49,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 23:36:49,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 23:36:49,877 INFO L87 Difference]: Start difference. First operand 773 states and 1170 transitions. Second operand has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2023-04-02 23:36:50,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:36:50,465 INFO L93 Difference]: Finished difference Result 905 states and 1332 transitions. [2023-04-02 23:36:50,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 23:36:50,465 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) Word has length 114 [2023-04-02 23:36:50,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:36:50,470 INFO L225 Difference]: With dead ends: 905 [2023-04-02 23:36:50,470 INFO L226 Difference]: Without dead ends: 902 [2023-04-02 23:36:50,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-04-02 23:36:50,471 INFO L413 NwaCegarLoop]: 709 mSDtfsCounter, 717 mSDsluCounter, 2245 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 2954 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 23:36:50,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 2954 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 23:36:50,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2023-04-02 23:36:50,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 894. [2023-04-02 23:36:50,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 564 states have (on average 1.4787234042553192) internal successors, (834), 592 states have internal predecessors, (834), 238 states have call successors, (238), 96 states have call predecessors, (238), 91 states have return successors, (248), 229 states have call predecessors, (248), 231 states have call successors, (248) [2023-04-02 23:36:50,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1320 transitions. [2023-04-02 23:36:50,509 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1320 transitions. Word has length 114 [2023-04-02 23:36:50,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:36:50,510 INFO L495 AbstractCegarLoop]: Abstraction has 894 states and 1320 transitions. [2023-04-02 23:36:50,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2023-04-02 23:36:50,510 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1320 transitions. [2023-04-02 23:36:50,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-04-02 23:36:50,513 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:36:50,513 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 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] [2023-04-02 23:36:50,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 23:36:50,513 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:36:50,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:36:50,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1355163227, now seen corresponding path program 1 times [2023-04-02 23:36:50,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:36:50,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866654110] [2023-04-02 23:36:50,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:36:50,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:36:50,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:36:50,738 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-04-02 23:36:50,739 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:36:50,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866654110] [2023-04-02 23:36:50,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866654110] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:36:50,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:36:50,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 23:36:50,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085197896] [2023-04-02 23:36:50,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:36:50,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 23:36:50,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:36:50,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 23:36:50,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 23:36:50,743 INFO L87 Difference]: Start difference. First operand 894 states and 1320 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2023-04-02 23:36:50,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:36:50,862 INFO L93 Difference]: Finished difference Result 1767 states and 2627 transitions. [2023-04-02 23:36:50,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 23:36:50,863 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) Word has length 150 [2023-04-02 23:36:50,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:36:50,870 INFO L225 Difference]: With dead ends: 1767 [2023-04-02 23:36:50,871 INFO L226 Difference]: Without dead ends: 904 [2023-04-02 23:36:50,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 23:36:50,879 INFO L413 NwaCegarLoop]: 570 mSDtfsCounter, 10 mSDsluCounter, 1689 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2259 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:36:50,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2259 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:36:50,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2023-04-02 23:36:50,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 904. [2023-04-02 23:36:50,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 571 states have (on average 1.4728546409807355) internal successors, (841), 600 states have internal predecessors, (841), 238 states have call successors, (238), 96 states have call predecessors, (238), 94 states have return successors, (251), 231 states have call predecessors, (251), 231 states have call successors, (251) [2023-04-02 23:36:50,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1330 transitions. [2023-04-02 23:36:50,929 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1330 transitions. Word has length 150 [2023-04-02 23:36:50,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:36:50,930 INFO L495 AbstractCegarLoop]: Abstraction has 904 states and 1330 transitions. [2023-04-02 23:36:50,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2023-04-02 23:36:50,930 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1330 transitions. [2023-04-02 23:36:50,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-04-02 23:36:50,936 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:36:50,936 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 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] [2023-04-02 23:36:50,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 23:36:50,936 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:36:50,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:36:50,937 INFO L85 PathProgramCache]: Analyzing trace with hash -2129871993, now seen corresponding path program 1 times [2023-04-02 23:36:50,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:36:50,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847953569] [2023-04-02 23:36:50,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:36:50,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:36:50,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:36:51,207 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-04-02 23:36:51,207 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:36:51,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847953569] [2023-04-02 23:36:51,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847953569] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:36:51,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237163114] [2023-04-02 23:36:51,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:36:51,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:36:51,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:36:51,210 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 23:36:51,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 23:36:51,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:36:51,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 2560 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-02 23:36:51,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:36:51,815 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-04-02 23:36:51,815 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 23:36:51,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237163114] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:36:51,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 23:36:51,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-04-02 23:36:51,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050471082] [2023-04-02 23:36:51,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:36:51,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 23:36:51,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:36:51,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 23:36:51,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-02 23:36:51,817 INFO L87 Difference]: Start difference. First operand 904 states and 1330 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-04-02 23:36:52,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:36:52,073 INFO L93 Difference]: Finished difference Result 1855 states and 2793 transitions. [2023-04-02 23:36:52,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 23:36:52,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 155 [2023-04-02 23:36:52,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:36:52,080 INFO L225 Difference]: With dead ends: 1855 [2023-04-02 23:36:52,080 INFO L226 Difference]: Without dead ends: 982 [2023-04-02 23:36:52,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-02 23:36:52,088 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 213 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 1488 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 23:36:52,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 1488 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 23:36:52,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2023-04-02 23:36:52,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 982. [2023-04-02 23:36:52,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 647 states have (on average 1.525502318392581) internal successors, (987), 676 states have internal predecessors, (987), 238 states have call successors, (238), 98 states have call predecessors, (238), 96 states have return successors, (251), 231 states have call predecessors, (251), 231 states have call successors, (251) [2023-04-02 23:36:52,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1476 transitions. [2023-04-02 23:36:52,125 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1476 transitions. Word has length 155 [2023-04-02 23:36:52,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:36:52,126 INFO L495 AbstractCegarLoop]: Abstraction has 982 states and 1476 transitions. [2023-04-02 23:36:52,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-04-02 23:36:52,126 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1476 transitions. [2023-04-02 23:36:52,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-04-02 23:36:52,130 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:36:52,131 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 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] [2023-04-02 23:36:52,145 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-02 23:36:52,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:36:52,347 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:36:52,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:36:52,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1439805853, now seen corresponding path program 1 times [2023-04-02 23:36:52,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:36:52,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009283499] [2023-04-02 23:36:52,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:36:52,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:36:52,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:36:52,543 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-04-02 23:36:52,544 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:36:52,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009283499] [2023-04-02 23:36:52,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009283499] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:36:52,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575192805] [2023-04-02 23:36:52,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:36:52,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:36:52,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:36:52,545 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) [2023-04-02 23:36:52,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 23:36:52,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:36:52,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 2565 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-02 23:36:52,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:36:53,014 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-04-02 23:36:53,014 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 23:36:53,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575192805] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:36:53,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 23:36:53,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-04-02 23:36:53,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894730372] [2023-04-02 23:36:53,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:36:53,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 23:36:53,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:36:53,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 23:36:53,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 23:36:53,019 INFO L87 Difference]: Start difference. First operand 982 states and 1476 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-04-02 23:36:53,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:36:53,273 INFO L93 Difference]: Finished difference Result 2011 states and 3083 transitions. [2023-04-02 23:36:53,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 23:36:53,274 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 160 [2023-04-02 23:36:53,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:36:53,280 INFO L225 Difference]: With dead ends: 2011 [2023-04-02 23:36:53,280 INFO L226 Difference]: Without dead ends: 1060 [2023-04-02 23:36:53,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-04-02 23:36:53,285 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 211 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 1488 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 23:36:53,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 1488 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 23:36:53,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2023-04-02 23:36:53,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 1060. [2023-04-02 23:36:53,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 723 states have (on average 1.5670816044260027) internal successors, (1133), 752 states have internal predecessors, (1133), 238 states have call successors, (238), 100 states have call predecessors, (238), 98 states have return successors, (251), 231 states have call predecessors, (251), 231 states have call successors, (251) [2023-04-02 23:36:53,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1622 transitions. [2023-04-02 23:36:53,325 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1622 transitions. Word has length 160 [2023-04-02 23:36:53,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:36:53,325 INFO L495 AbstractCegarLoop]: Abstraction has 1060 states and 1622 transitions. [2023-04-02 23:36:53,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-04-02 23:36:53,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1622 transitions. [2023-04-02 23:36:53,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-04-02 23:36:53,329 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:36:53,329 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 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] [2023-04-02 23:36:53,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-02 23:36:53,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:36:53,538 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:36:53,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:36:53,539 INFO L85 PathProgramCache]: Analyzing trace with hash 173735373, now seen corresponding path program 1 times [2023-04-02 23:36:53,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:36:53,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287688960] [2023-04-02 23:36:53,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:36:53,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:36:53,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:36:53,735 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-04-02 23:36:53,736 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:36:53,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287688960] [2023-04-02 23:36:53,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287688960] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:36:53,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283002394] [2023-04-02 23:36:53,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:36:53,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:36:53,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:36:53,737 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 23:36:53,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-02 23:36:54,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:36:54,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 2569 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-02 23:36:54,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:36:54,183 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-04-02 23:36:54,183 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 23:36:54,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283002394] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:36:54,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 23:36:54,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-04-02 23:36:54,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434326239] [2023-04-02 23:36:54,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:36:54,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 23:36:54,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:36:54,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 23:36:54,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 23:36:54,187 INFO L87 Difference]: Start difference. First operand 1060 states and 1622 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-04-02 23:36:54,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:36:54,384 INFO L93 Difference]: Finished difference Result 2167 states and 3373 transitions. [2023-04-02 23:36:54,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 23:36:54,385 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 164 [2023-04-02 23:36:54,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:36:54,391 INFO L225 Difference]: With dead ends: 2167 [2023-04-02 23:36:54,391 INFO L226 Difference]: Without dead ends: 1138 [2023-04-02 23:36:54,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-04-02 23:36:54,395 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 209 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 1488 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:36:54,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 1488 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:36:54,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2023-04-02 23:36:54,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 1138. [2023-04-02 23:36:54,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1138 states, 799 states have (on average 1.6007509386733416) internal successors, (1279), 828 states have internal predecessors, (1279), 238 states have call successors, (238), 102 states have call predecessors, (238), 100 states have return successors, (251), 231 states have call predecessors, (251), 231 states have call successors, (251) [2023-04-02 23:36:54,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1768 transitions. [2023-04-02 23:36:54,427 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1768 transitions. Word has length 164 [2023-04-02 23:36:54,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:36:54,428 INFO L495 AbstractCegarLoop]: Abstraction has 1138 states and 1768 transitions. [2023-04-02 23:36:54,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-04-02 23:36:54,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1768 transitions. [2023-04-02 23:36:54,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-04-02 23:36:54,431 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:36:54,431 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 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] [2023-04-02 23:36:54,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-04-02 23:36:54,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:36:54,639 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:36:54,640 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:36:54,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1630838887, now seen corresponding path program 1 times [2023-04-02 23:36:54,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:36:54,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967500638] [2023-04-02 23:36:54,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:36:54,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:36:54,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:36:54,811 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-04-02 23:36:54,811 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:36:54,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967500638] [2023-04-02 23:36:54,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967500638] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:36:54,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908113478] [2023-04-02 23:36:54,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:36:54,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:36:54,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:36:54,821 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 23:36:54,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-02 23:36:55,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:36:55,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 2572 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-02 23:36:55,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:36:55,311 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-04-02 23:36:55,311 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 23:36:55,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908113478] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:36:55,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 23:36:55,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-04-02 23:36:55,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069625266] [2023-04-02 23:36:55,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:36:55,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 23:36:55,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:36:55,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 23:36:55,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 23:36:55,313 INFO L87 Difference]: Start difference. First operand 1138 states and 1768 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-04-02 23:36:55,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:36:55,518 INFO L93 Difference]: Finished difference Result 2323 states and 3663 transitions. [2023-04-02 23:36:55,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 23:36:55,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 167 [2023-04-02 23:36:55,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:36:55,525 INFO L225 Difference]: With dead ends: 2323 [2023-04-02 23:36:55,525 INFO L226 Difference]: Without dead ends: 1216 [2023-04-02 23:36:55,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-04-02 23:36:55,528 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 207 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 1488 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 23:36:55,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 1488 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 23:36:55,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2023-04-02 23:36:55,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1216. [2023-04-02 23:36:55,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1216 states, 875 states have (on average 1.6285714285714286) internal successors, (1425), 904 states have internal predecessors, (1425), 238 states have call successors, (238), 104 states have call predecessors, (238), 102 states have return successors, (251), 231 states have call predecessors, (251), 231 states have call successors, (251) [2023-04-02 23:36:55,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1914 transitions. [2023-04-02 23:36:55,567 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1914 transitions. Word has length 167 [2023-04-02 23:36:55,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:36:55,568 INFO L495 AbstractCegarLoop]: Abstraction has 1216 states and 1914 transitions. [2023-04-02 23:36:55,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-04-02 23:36:55,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1914 transitions. [2023-04-02 23:36:55,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-04-02 23:36:55,572 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:36:55,572 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:36:55,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-02 23:36:55,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:36:55,780 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:36:55,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:36:55,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1762661653, now seen corresponding path program 1 times [2023-04-02 23:36:55,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:36:55,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489234932] [2023-04-02 23:36:55,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:36:55,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:36:55,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:36:56,133 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-04-02 23:36:56,133 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:36:56,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489234932] [2023-04-02 23:36:56,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489234932] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:36:56,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82258039] [2023-04-02 23:36:56,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:36:56,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:36:56,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:36:56,135 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 23:36:56,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-02 23:36:56,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:36:56,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 2568 conjuncts, 48 conjunts are in the unsatisfiable core [2023-04-02 23:36:56,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:36:57,434 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-04-02 23:36:57,434 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:37:40,451 WARN L223 SmtUtils]: Spent 40.93s on a formula simplification. DAG size of input: 1441 DAG size of output: 51 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-04-02 23:38:25,157 WARN L223 SmtUtils]: Spent 43.79s on a formula simplification. DAG size of input: 1441 DAG size of output: 51 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-04-02 23:38:26,873 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-04-02 23:38:26,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82258039] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 23:38:26,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [861624024] [2023-04-02 23:38:26,895 INFO L159 IcfgInterpreter]: Started Sifa with 131 locations of interest [2023-04-02 23:38:26,895 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:38:26,897 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:38:26,900 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:38:26,901 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:38:28,560 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 166 for LOIs [2023-04-02 23:38:28,973 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 215 for LOIs [2023-04-02 23:38:31,078 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 215 for LOIs [2023-04-02 23:38:31,404 INFO L197 IcfgInterpreter]: Interpreting procedure test with input of size 215 for LOIs [2023-04-02 23:38:33,865 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 123071 conjuctions. This might take some time...