/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain IntervalDomain -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 00:36:50,538 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 00:36:50,540 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 00:36:50,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 00:36:50,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 00:36:50,591 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 00:36:50,593 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 00:36:50,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 00:36:50,595 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 00:36:50,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 00:36:50,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 00:36:50,602 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 00:36:50,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 00:36:50,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 00:36:50,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 00:36:50,606 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 00:36:50,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 00:36:50,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 00:36:50,622 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 00:36:50,622 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 00:36:50,623 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 00:36:50,659 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 00:36:50,659 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 00:36:50,659 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 00:36:50,659 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 00:36:50,660 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 00:36:50,660 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 00:36:50,660 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 00:36:50,661 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 00:36:50,661 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 00:36:50,661 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 00:36:50,661 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 00:36:50,662 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 00:36:50,662 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 00:36:50,662 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 00:36:50,662 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 00:36:50,662 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 00:36:50,662 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 00:36:50,662 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 00:36:50,663 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 00:36:50,663 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 00:36:50,663 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 00:36:50,663 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 00:36:50,663 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 00:36:50,663 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 00:36:50,663 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 00:36:50,664 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 00:36:50,664 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 00:36:50,664 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 00:36:50,664 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 00:36:50,664 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 00:36:50,664 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 00:36:50,664 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 00:36:50,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 00:36:50,665 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 00:36:50,665 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 00:36:50,665 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 00:36:50,665 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 00:36:50,665 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 00:36:50,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 00:36:50,665 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 00:36:50,665 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 00:36:50,666 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-04-01 00:36:50,891 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 00:36:50,910 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 00:36:50,912 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 00:36:50,913 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 00:36:50,913 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 00:36:50,914 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2023-04-01 00:36:52,050 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 00:36:52,331 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 00:36:52,332 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2023-04-01 00:36:52,342 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2db615c23/3c145471532045f4bc0141f8a5aeb2b3/FLAG60f8c00cb [2023-04-01 00:36:52,356 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2db615c23/3c145471532045f4bc0141f8a5aeb2b3 [2023-04-01 00:36:52,359 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 00:36:52,360 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 00:36:52,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 00:36:52,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 00:36:52,366 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 00:36:52,367 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:36:52" (1/1) ... [2023-04-01 00:36:52,369 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71aa2cab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:36:52, skipping insertion in model container [2023-04-01 00:36:52,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:36:52" (1/1) ... [2023-04-01 00:36:52,376 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 00:36:52,421 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 00:36:52,658 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/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c[11904,11917] [2023-04-01 00:36:52,709 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 00:36:52,723 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 00:36:52,816 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/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c[11904,11917] [2023-04-01 00:36:52,875 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 00:36:52,900 INFO L208 MainTranslator]: Completed translation [2023-04-01 00:36:52,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:36:52 WrapperNode [2023-04-01 00:36:52,900 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 00:36:52,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 00:36:52,901 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 00:36:52,901 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 00:36:52,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:36:52" (1/1) ... [2023-04-01 00:36:52,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:36:52" (1/1) ... [2023-04-01 00:36:52,934 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:36:52" (1/1) ... [2023-04-01 00:36:52,934 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:36:52" (1/1) ... [2023-04-01 00:36:52,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:36:52" (1/1) ... [2023-04-01 00:36:52,985 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:36:52" (1/1) ... [2023-04-01 00:36:52,988 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:36:52" (1/1) ... [2023-04-01 00:36:52,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:36:52" (1/1) ... [2023-04-01 00:36:52,995 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 00:36:52,996 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 00:36:52,996 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 00:36:52,996 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 00:36:52,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:36:52" (1/1) ... [2023-04-01 00:36:53,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 00:36:53,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 00:36:53,032 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 00:36:53,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 00:36:53,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 00:36:53,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 00:36:53,059 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 00:36:53,059 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 00:36:53,059 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 00:36:53,059 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 00:36:53,060 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 00:36:53,060 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 00:36:53,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 00:36:53,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-01 00:36:53,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-01 00:36:53,060 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-01 00:36:53,060 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 00:36:53,060 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-01 00:36:53,061 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-01 00:36:53,061 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-01 00:36:53,061 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-01 00:36:53,061 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-01 00:36:53,061 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-01 00:36:53,061 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-01 00:36:53,061 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2023-04-01 00:36:53,061 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-01 00:36:53,061 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-01 00:36:53,062 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 00:36:53,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 00:36:53,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 00:36:53,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 00:36:53,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 00:36:53,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 00:36:53,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 00:36:53,237 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 00:36:53,239 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 00:36:54,129 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 00:36:54,348 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 00:36:54,348 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-01 00:36:54,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:36:54 BoogieIcfgContainer [2023-04-01 00:36:54,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 00:36:54,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 00:36:54,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 00:36:54,357 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 00:36:54,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:36:52" (1/3) ... [2023-04-01 00:36:54,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c8dbad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:36:54, skipping insertion in model container [2023-04-01 00:36:54,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:36:52" (2/3) ... [2023-04-01 00:36:54,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c8dbad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:36:54, skipping insertion in model container [2023-04-01 00:36:54,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:36:54" (3/3) ... [2023-04-01 00:36:54,363 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2023-04-01 00:36:54,380 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 00:36:54,381 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 00:36:54,447 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 00:36:54,454 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;@259987c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 00:36:54,455 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 00:36:54,460 INFO L276 IsEmpty]: Start isEmpty. Operand has 224 states, 177 states have (on average 1.6440677966101696) internal successors, (291), 219 states have internal predecessors, (291), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 00:36:54,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-04-01 00:36:54,476 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:54,478 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:36:54,479 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:36:54,485 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:54,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1794517032, now seen corresponding path program 1 times [2023-04-01 00:36:54,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:54,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302762644] [2023-04-01 00:36:54,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:54,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:54,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:55,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:36:55,009 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:55,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302762644] [2023-04-01 00:36:55,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302762644] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:55,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:55,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 00:36:55,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552013489] [2023-04-01 00:36:55,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:55,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 00:36:55,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:55,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 00:36:55,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 00:36:55,062 INFO L87 Difference]: Start difference. First operand has 224 states, 177 states have (on average 1.6440677966101696) internal successors, (291), 219 states have internal predecessors, (291), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:55,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:55,291 INFO L93 Difference]: Finished difference Result 369 states and 509 transitions. [2023-04-01 00:36:55,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 00:36:55,293 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2023-04-01 00:36:55,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:55,301 INFO L225 Difference]: With dead ends: 369 [2023-04-01 00:36:55,301 INFO L226 Difference]: Without dead ends: 179 [2023-04-01 00:36:55,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:36:55,311 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 71 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:55,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 695 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 00:36:55,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2023-04-01 00:36:55,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2023-04-01 00:36:55,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 175 states have (on average 1.3657142857142857) internal successors, (239), 175 states have internal predecessors, (239), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:55,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 242 transitions. [2023-04-01 00:36:55,362 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 242 transitions. Word has length 58 [2023-04-01 00:36:55,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:55,362 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 242 transitions. [2023-04-01 00:36:55,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:55,362 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 242 transitions. [2023-04-01 00:36:55,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-04-01 00:36:55,365 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:55,366 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:36:55,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 00:36:55,366 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:36:55,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:55,367 INFO L85 PathProgramCache]: Analyzing trace with hash 451781262, now seen corresponding path program 1 times [2023-04-01 00:36:55,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:55,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927484471] [2023-04-01 00:36:55,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:55,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:55,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:55,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:36:55,587 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:55,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927484471] [2023-04-01 00:36:55,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927484471] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:55,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:55,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 00:36:55,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249385603] [2023-04-01 00:36:55,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:55,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 00:36:55,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:55,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 00:36:55,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:36:55,592 INFO L87 Difference]: Start difference. First operand 179 states and 242 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:55,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:55,733 INFO L93 Difference]: Finished difference Result 384 states and 544 transitions. [2023-04-01 00:36:55,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 00:36:55,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 97 [2023-04-01 00:36:55,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:55,742 INFO L225 Difference]: With dead ends: 384 [2023-04-01 00:36:55,742 INFO L226 Difference]: Without dead ends: 258 [2023-04-01 00:36:55,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:36:55,744 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 133 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:55,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 381 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 00:36:55,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2023-04-01 00:36:55,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 256. [2023-04-01 00:36:55,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 252 states have (on average 1.3968253968253967) internal successors, (352), 252 states have internal predecessors, (352), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:55,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 355 transitions. [2023-04-01 00:36:55,789 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 355 transitions. Word has length 97 [2023-04-01 00:36:55,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:55,789 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 355 transitions. [2023-04-01 00:36:55,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:55,790 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 355 transitions. [2023-04-01 00:36:55,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-04-01 00:36:55,799 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:55,799 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:36:55,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 00:36:55,800 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:36:55,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:55,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1583371284, now seen corresponding path program 1 times [2023-04-01 00:36:55,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:55,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636019606] [2023-04-01 00:36:55,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:55,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:55,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:55,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:36:55,971 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:55,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636019606] [2023-04-01 00:36:55,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636019606] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:55,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:55,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 00:36:55,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835704595] [2023-04-01 00:36:55,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:55,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 00:36:55,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:55,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 00:36:55,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:36:55,973 INFO L87 Difference]: Start difference. First operand 256 states and 355 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:56,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:56,075 INFO L93 Difference]: Finished difference Result 593 states and 852 transitions. [2023-04-01 00:36:56,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 00:36:56,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 103 [2023-04-01 00:36:56,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:56,081 INFO L225 Difference]: With dead ends: 593 [2023-04-01 00:36:56,081 INFO L226 Difference]: Without dead ends: 396 [2023-04-01 00:36:56,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:36:56,090 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 127 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:56,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 421 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 00:36:56,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2023-04-01 00:36:56,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 394. [2023-04-01 00:36:56,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 390 states have (on average 1.4205128205128206) internal successors, (554), 390 states have internal predecessors, (554), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:56,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 557 transitions. [2023-04-01 00:36:56,146 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 557 transitions. Word has length 103 [2023-04-01 00:36:56,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:56,147 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 557 transitions. [2023-04-01 00:36:56,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:56,147 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 557 transitions. [2023-04-01 00:36:56,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-04-01 00:36:56,153 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:56,153 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:36:56,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 00:36:56,154 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:36:56,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:56,155 INFO L85 PathProgramCache]: Analyzing trace with hash 640330874, now seen corresponding path program 1 times [2023-04-01 00:36:56,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:56,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130105973] [2023-04-01 00:36:56,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:56,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:56,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:56,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:36:56,317 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:56,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130105973] [2023-04-01 00:36:56,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130105973] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:56,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:56,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 00:36:56,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410943961] [2023-04-01 00:36:56,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:56,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 00:36:56,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:56,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 00:36:56,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:36:56,321 INFO L87 Difference]: Start difference. First operand 394 states and 557 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:56,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:56,448 INFO L93 Difference]: Finished difference Result 969 states and 1403 transitions. [2023-04-01 00:36:56,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 00:36:56,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 109 [2023-04-01 00:36:56,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:56,454 INFO L225 Difference]: With dead ends: 969 [2023-04-01 00:36:56,454 INFO L226 Difference]: Without dead ends: 640 [2023-04-01 00:36:56,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:36:56,466 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 121 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:56,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 373 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 00:36:56,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2023-04-01 00:36:56,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 638. [2023-04-01 00:36:56,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 634 states have (on average 1.4337539432176656) internal successors, (909), 634 states have internal predecessors, (909), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:56,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 912 transitions. [2023-04-01 00:36:56,535 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 912 transitions. Word has length 109 [2023-04-01 00:36:56,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:56,537 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 912 transitions. [2023-04-01 00:36:56,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:56,538 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 912 transitions. [2023-04-01 00:36:56,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-04-01 00:36:56,539 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:56,539 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:36:56,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 00:36:56,540 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:36:56,540 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:56,540 INFO L85 PathProgramCache]: Analyzing trace with hash 664655468, now seen corresponding path program 1 times [2023-04-01 00:36:56,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:56,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244075424] [2023-04-01 00:36:56,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:56,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:56,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:56,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:36:56,677 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:56,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244075424] [2023-04-01 00:36:56,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244075424] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:56,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:56,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 00:36:56,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434672505] [2023-04-01 00:36:56,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:56,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 00:36:56,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:56,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 00:36:56,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:36:56,683 INFO L87 Difference]: Start difference. First operand 638 states and 912 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:56,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:56,860 INFO L93 Difference]: Finished difference Result 1631 states and 2365 transitions. [2023-04-01 00:36:56,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 00:36:56,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 115 [2023-04-01 00:36:56,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:56,864 INFO L225 Difference]: With dead ends: 1631 [2023-04-01 00:36:56,865 INFO L226 Difference]: Without dead ends: 1064 [2023-04-01 00:36:56,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:36:56,867 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 115 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:56,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 369 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 00:36:56,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2023-04-01 00:36:56,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 1062. [2023-04-01 00:36:56,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1062 states, 1058 states have (on average 1.436672967863894) internal successors, (1520), 1058 states have internal predecessors, (1520), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:56,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1523 transitions. [2023-04-01 00:36:56,981 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1523 transitions. Word has length 115 [2023-04-01 00:36:56,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:56,982 INFO L495 AbstractCegarLoop]: Abstraction has 1062 states and 1523 transitions. [2023-04-01 00:36:56,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:56,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1523 transitions. [2023-04-01 00:36:56,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-04-01 00:36:56,984 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:56,985 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:36:56,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 00:36:56,985 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:36:56,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:56,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1710267878, now seen corresponding path program 1 times [2023-04-01 00:36:56,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:56,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102991065] [2023-04-01 00:36:56,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:56,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:57,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:57,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:36:57,089 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:57,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102991065] [2023-04-01 00:36:57,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102991065] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:57,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:57,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 00:36:57,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157356630] [2023-04-01 00:36:57,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:57,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 00:36:57,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:57,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 00:36:57,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:36:57,091 INFO L87 Difference]: Start difference. First operand 1062 states and 1523 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:57,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:57,395 INFO L93 Difference]: Finished difference Result 2769 states and 3999 transitions. [2023-04-01 00:36:57,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 00:36:57,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 121 [2023-04-01 00:36:57,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:57,403 INFO L225 Difference]: With dead ends: 2769 [2023-04-01 00:36:57,403 INFO L226 Difference]: Without dead ends: 1784 [2023-04-01 00:36:57,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:36:57,407 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 109 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:57,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 365 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 00:36:57,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1784 states. [2023-04-01 00:36:57,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1784 to 1782. [2023-04-01 00:36:57,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1782 states, 1778 states have (on average 1.4302587176602926) internal successors, (2543), 1778 states have internal predecessors, (2543), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:57,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1782 states to 1782 states and 2546 transitions. [2023-04-01 00:36:57,635 INFO L78 Accepts]: Start accepts. Automaton has 1782 states and 2546 transitions. Word has length 121 [2023-04-01 00:36:57,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:57,636 INFO L495 AbstractCegarLoop]: Abstraction has 1782 states and 2546 transitions. [2023-04-01 00:36:57,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:57,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1782 states and 2546 transitions. [2023-04-01 00:36:57,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-04-01 00:36:57,641 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:57,641 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:36:57,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 00:36:57,642 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:36:57,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:57,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1377668080, now seen corresponding path program 1 times [2023-04-01 00:36:57,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:57,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810297390] [2023-04-01 00:36:57,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:57,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:57,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:57,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:36:57,808 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:57,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810297390] [2023-04-01 00:36:57,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810297390] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:57,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:57,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 00:36:57,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906499879] [2023-04-01 00:36:57,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:57,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 00:36:57,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:57,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 00:36:57,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:36:57,810 INFO L87 Difference]: Start difference. First operand 1782 states and 2546 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:58,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:58,315 INFO L93 Difference]: Finished difference Result 4667 states and 6677 transitions. [2023-04-01 00:36:58,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 00:36:58,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 127 [2023-04-01 00:36:58,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:58,328 INFO L225 Difference]: With dead ends: 4667 [2023-04-01 00:36:58,328 INFO L226 Difference]: Without dead ends: 2968 [2023-04-01 00:36:58,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:36:58,334 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 103 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:58,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 361 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 00:36:58,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2023-04-01 00:36:58,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 2966. [2023-04-01 00:36:58,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2966 states, 2962 states have (on average 1.4145847400405132) internal successors, (4190), 2962 states have internal predecessors, (4190), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:58,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2966 states to 2966 states and 4193 transitions. [2023-04-01 00:36:58,732 INFO L78 Accepts]: Start accepts. Automaton has 2966 states and 4193 transitions. Word has length 127 [2023-04-01 00:36:58,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:58,732 INFO L495 AbstractCegarLoop]: Abstraction has 2966 states and 4193 transitions. [2023-04-01 00:36:58,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:36:58,733 INFO L276 IsEmpty]: Start isEmpty. Operand 2966 states and 4193 transitions. [2023-04-01 00:36:58,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-04-01 00:36:58,739 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:58,740 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:36:58,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-01 00:36:58,740 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:36:58,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:58,740 INFO L85 PathProgramCache]: Analyzing trace with hash 914471333, now seen corresponding path program 1 times [2023-04-01 00:36:58,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:58,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556797555] [2023-04-01 00:36:58,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:58,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:59,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:36:59,037 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:59,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556797555] [2023-04-01 00:36:59,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556797555] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:59,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:59,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-01 00:36:59,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205222657] [2023-04-01 00:36:59,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:59,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 00:36:59,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:59,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 00:36:59,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-01 00:36:59,040 INFO L87 Difference]: Start difference. First operand 2966 states and 4193 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 8 states have internal predecessors, (130), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:37:00,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:37:00,666 INFO L93 Difference]: Finished difference Result 10439 states and 14690 transitions. [2023-04-01 00:37:00,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 00:37:00,666 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 8 states have internal predecessors, (130), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 133 [2023-04-01 00:37:00,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:37:00,695 INFO L225 Difference]: With dead ends: 10439 [2023-04-01 00:37:00,695 INFO L226 Difference]: Without dead ends: 7561 [2023-04-01 00:37:00,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2023-04-01 00:37:00,703 INFO L413 NwaCegarLoop]: 1017 mSDtfsCounter, 1196 mSDsluCounter, 2846 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1196 SdHoareTripleChecker+Valid, 3863 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 00:37:00,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1196 Valid, 3863 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 00:37:00,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7561 states. [2023-04-01 00:37:01,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7561 to 3919. [2023-04-01 00:37:01,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3919 states, 3915 states have (on average 1.3782886334610474) internal successors, (5396), 3915 states have internal predecessors, (5396), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:37:01,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3919 states to 3919 states and 5399 transitions. [2023-04-01 00:37:01,353 INFO L78 Accepts]: Start accepts. Automaton has 3919 states and 5399 transitions. Word has length 133 [2023-04-01 00:37:01,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:37:01,353 INFO L495 AbstractCegarLoop]: Abstraction has 3919 states and 5399 transitions. [2023-04-01 00:37:01,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 8 states have internal predecessors, (130), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:37:01,353 INFO L276 IsEmpty]: Start isEmpty. Operand 3919 states and 5399 transitions. [2023-04-01 00:37:01,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-04-01 00:37:01,362 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:37:01,362 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:37:01,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-01 00:37:01,363 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:37:01,363 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:37:01,363 INFO L85 PathProgramCache]: Analyzing trace with hash -426510472, now seen corresponding path program 1 times [2023-04-01 00:37:01,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:37:01,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080565920] [2023-04-01 00:37:01,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:37:01,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:37:01,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:37:01,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:37:01,486 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:37:01,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080565920] [2023-04-01 00:37:01,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080565920] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:37:01,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:37:01,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 00:37:01,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737160765] [2023-04-01 00:37:01,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:37:01,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 00:37:01,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:37:01,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 00:37:01,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:37:01,488 INFO L87 Difference]: Start difference. First operand 3919 states and 5399 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:37:02,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:37:02,302 INFO L93 Difference]: Finished difference Result 9350 states and 12982 transitions. [2023-04-01 00:37:02,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 00:37:02,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 135 [2023-04-01 00:37:02,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:37:02,322 INFO L225 Difference]: With dead ends: 9350 [2023-04-01 00:37:02,323 INFO L226 Difference]: Without dead ends: 5518 [2023-04-01 00:37:02,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:37:02,332 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 153 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 00:37:02,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 430 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 00:37:02,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5518 states. [2023-04-01 00:37:03,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5518 to 5516. [2023-04-01 00:37:03,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5516 states, 5512 states have (on average 1.3813497822931786) internal successors, (7614), 5512 states have internal predecessors, (7614), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:37:03,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5516 states to 5516 states and 7617 transitions. [2023-04-01 00:37:03,141 INFO L78 Accepts]: Start accepts. Automaton has 5516 states and 7617 transitions. Word has length 135 [2023-04-01 00:37:03,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:37:03,141 INFO L495 AbstractCegarLoop]: Abstraction has 5516 states and 7617 transitions. [2023-04-01 00:37:03,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:37:03,142 INFO L276 IsEmpty]: Start isEmpty. Operand 5516 states and 7617 transitions. [2023-04-01 00:37:03,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-04-01 00:37:03,154 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:37:03,154 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:37:03,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-01 00:37:03,154 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:37:03,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:37:03,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1604834919, now seen corresponding path program 1 times [2023-04-01 00:37:03,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:37:03,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185882645] [2023-04-01 00:37:03,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:37:03,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:37:03,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:37:03,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:37:03,582 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:37:03,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185882645] [2023-04-01 00:37:03,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185882645] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:37:03,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:37:03,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-01 00:37:03,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495508610] [2023-04-01 00:37:03,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:37:03,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-01 00:37:03,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:37:03,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-01 00:37:03,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-04-01 00:37:03,584 INFO L87 Difference]: Start difference. First operand 5516 states and 7617 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:37:04,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:37:04,624 INFO L93 Difference]: Finished difference Result 10946 states and 15134 transitions. [2023-04-01 00:37:04,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 00:37:04,625 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 135 [2023-04-01 00:37:04,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:37:04,645 INFO L225 Difference]: With dead ends: 10946 [2023-04-01 00:37:04,645 INFO L226 Difference]: Without dead ends: 5518 [2023-04-01 00:37:04,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2023-04-01 00:37:04,656 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 176 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 996 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 00:37:04,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 996 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 00:37:04,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5518 states. [2023-04-01 00:37:05,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5518 to 5516. [2023-04-01 00:37:05,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5516 states, 5512 states have (on average 1.3806240928882438) internal successors, (7610), 5512 states have internal predecessors, (7610), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:37:05,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5516 states to 5516 states and 7613 transitions. [2023-04-01 00:37:05,416 INFO L78 Accepts]: Start accepts. Automaton has 5516 states and 7613 transitions. Word has length 135 [2023-04-01 00:37:05,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:37:05,416 INFO L495 AbstractCegarLoop]: Abstraction has 5516 states and 7613 transitions. [2023-04-01 00:37:05,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:37:05,416 INFO L276 IsEmpty]: Start isEmpty. Operand 5516 states and 7613 transitions. [2023-04-01 00:37:05,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-01 00:37:05,428 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:37:05,428 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:37:05,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-01 00:37:05,429 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:37:05,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:37:05,429 INFO L85 PathProgramCache]: Analyzing trace with hash 629095575, now seen corresponding path program 1 times [2023-04-01 00:37:05,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:37:05,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006295975] [2023-04-01 00:37:05,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:37:05,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:37:05,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:37:05,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:37:05,514 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:37:05,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006295975] [2023-04-01 00:37:05,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006295975] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:37:05,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:37:05,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 00:37:05,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330611811] [2023-04-01 00:37:05,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:37:05,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 00:37:05,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:37:05,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 00:37:05,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:37:05,516 INFO L87 Difference]: Start difference. First operand 5516 states and 7613 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:37:07,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:37:07,288 INFO L93 Difference]: Finished difference Result 15803 states and 21813 transitions. [2023-04-01 00:37:07,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 00:37:07,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 136 [2023-04-01 00:37:07,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:37:07,328 INFO L225 Difference]: With dead ends: 15803 [2023-04-01 00:37:07,328 INFO L226 Difference]: Without dead ends: 10899 [2023-04-01 00:37:07,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:37:07,345 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 123 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 00:37:07,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 272 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 00:37:07,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10899 states. [2023-04-01 00:37:08,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10899 to 10897. [2023-04-01 00:37:08,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10897 states, 10893 states have (on average 1.3727164233911686) internal successors, (14953), 10893 states have internal predecessors, (14953), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:37:08,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10897 states to 10897 states and 14956 transitions. [2023-04-01 00:37:08,897 INFO L78 Accepts]: Start accepts. Automaton has 10897 states and 14956 transitions. Word has length 136 [2023-04-01 00:37:08,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:37:08,897 INFO L495 AbstractCegarLoop]: Abstraction has 10897 states and 14956 transitions. [2023-04-01 00:37:08,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:37:08,898 INFO L276 IsEmpty]: Start isEmpty. Operand 10897 states and 14956 transitions. [2023-04-01 00:37:08,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-01 00:37:08,921 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:37:08,922 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:37:08,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-01 00:37:08,922 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:37:08,922 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:37:08,922 INFO L85 PathProgramCache]: Analyzing trace with hash -2130473796, now seen corresponding path program 1 times [2023-04-01 00:37:08,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:37:08,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764203908] [2023-04-01 00:37:08,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:37:08,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:37:08,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:37:09,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:37:09,006 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:37:09,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764203908] [2023-04-01 00:37:09,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764203908] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:37:09,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:37:09,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 00:37:09,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577030666] [2023-04-01 00:37:09,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:37:09,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 00:37:09,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:37:09,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 00:37:09,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:37:09,008 INFO L87 Difference]: Start difference. First operand 10897 states and 14956 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:37:11,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:37:11,354 INFO L93 Difference]: Finished difference Result 26315 states and 36158 transitions. [2023-04-01 00:37:11,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 00:37:11,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 136 [2023-04-01 00:37:11,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:37:11,403 INFO L225 Difference]: With dead ends: 26315 [2023-04-01 00:37:11,404 INFO L226 Difference]: Without dead ends: 16597 [2023-04-01 00:37:11,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:37:11,429 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 106 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 00:37:11,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 356 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 00:37:11,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16597 states. [2023-04-01 00:37:13,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16597 to 16595. [2023-04-01 00:37:13,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16595 states, 16591 states have (on average 1.3652582725574107) internal successors, (22651), 16591 states have internal predecessors, (22651), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:37:13,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16595 states to 16595 states and 22654 transitions. [2023-04-01 00:37:13,355 INFO L78 Accepts]: Start accepts. Automaton has 16595 states and 22654 transitions. Word has length 136 [2023-04-01 00:37:13,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:37:13,356 INFO L495 AbstractCegarLoop]: Abstraction has 16595 states and 22654 transitions. [2023-04-01 00:37:13,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:37:13,356 INFO L276 IsEmpty]: Start isEmpty. Operand 16595 states and 22654 transitions. [2023-04-01 00:37:13,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-01 00:37:13,394 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:37:13,394 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:37:13,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-01 00:37:13,394 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:37:13,395 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:37:13,395 INFO L85 PathProgramCache]: Analyzing trace with hash 443162625, now seen corresponding path program 1 times [2023-04-01 00:37:13,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:37:13,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064675201] [2023-04-01 00:37:13,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:37:13,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:37:13,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:37:13,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:37:13,477 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:37:13,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064675201] [2023-04-01 00:37:13,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064675201] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:37:13,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:37:13,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 00:37:13,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881332439] [2023-04-01 00:37:13,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:37:13,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 00:37:13,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:37:13,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 00:37:13,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:37:13,480 INFO L87 Difference]: Start difference. First operand 16595 states and 22654 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:37:16,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:37:16,925 INFO L93 Difference]: Finished difference Result 47299 states and 64384 transitions. [2023-04-01 00:37:16,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 00:37:16,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 136 [2023-04-01 00:37:16,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:37:17,026 INFO L225 Difference]: With dead ends: 47299 [2023-04-01 00:37:17,026 INFO L226 Difference]: Without dead ends: 32837 [2023-04-01 00:37:17,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-01 00:37:17,067 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 107 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 00:37:17,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 282 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 00:37:17,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32837 states. [2023-04-01 00:37:20,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32837 to 32835. [2023-04-01 00:37:20,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32835 states, 32831 states have (on average 1.353446437817916) internal successors, (44435), 32831 states have internal predecessors, (44435), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:37:20,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32835 states to 32835 states and 44438 transitions. [2023-04-01 00:37:20,974 INFO L78 Accepts]: Start accepts. Automaton has 32835 states and 44438 transitions. Word has length 136 [2023-04-01 00:37:20,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:37:20,975 INFO L495 AbstractCegarLoop]: Abstraction has 32835 states and 44438 transitions. [2023-04-01 00:37:20,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:37:20,975 INFO L276 IsEmpty]: Start isEmpty. Operand 32835 states and 44438 transitions. [2023-04-01 00:37:21,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-01 00:37:21,142 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:37:21,142 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:37:21,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-01 00:37:21,142 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:37:21,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:37:21,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1770547814, now seen corresponding path program 1 times [2023-04-01 00:37:21,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:37:21,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838609355] [2023-04-01 00:37:21,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:37:21,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:37:21,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:37:21,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:37:21,296 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:37:21,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838609355] [2023-04-01 00:37:21,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838609355] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:37:21,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:37:21,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 00:37:21,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875562464] [2023-04-01 00:37:21,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:37:21,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 00:37:21,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:37:21,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 00:37:21,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:37:21,298 INFO L87 Difference]: Start difference. First operand 32835 states and 44438 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:37:25,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:37:25,896 INFO L93 Difference]: Finished difference Result 65613 states and 88815 transitions. [2023-04-01 00:37:25,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 00:37:25,897 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 136 [2023-04-01 00:37:25,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:37:25,993 INFO L225 Difference]: With dead ends: 65613 [2023-04-01 00:37:25,993 INFO L226 Difference]: Without dead ends: 32835 [2023-04-01 00:37:26,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 00:37:26,051 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 612 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 00:37:26,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [612 Valid, 135 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 00:37:26,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32835 states. [2023-04-01 00:37:30,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32835 to 32835. [2023-04-01 00:37:30,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32835 states, 32831 states have (on average 1.3383083061740428) internal successors, (43938), 32831 states have internal predecessors, (43938), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:37:30,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32835 states to 32835 states and 43941 transitions. [2023-04-01 00:37:30,575 INFO L78 Accepts]: Start accepts. Automaton has 32835 states and 43941 transitions. Word has length 136 [2023-04-01 00:37:30,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:37:30,576 INFO L495 AbstractCegarLoop]: Abstraction has 32835 states and 43941 transitions. [2023-04-01 00:37:30,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:37:30,576 INFO L276 IsEmpty]: Start isEmpty. Operand 32835 states and 43941 transitions. [2023-04-01 00:37:30,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-01 00:37:30,664 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:37:30,664 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:37:30,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-01 00:37:30,664 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:37:30,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:37:30,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1487393008, now seen corresponding path program 1 times [2023-04-01 00:37:30,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:37:30,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094477544] [2023-04-01 00:37:30,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:37:30,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:37:30,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:37:30,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:37:30,829 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:37:30,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094477544] [2023-04-01 00:37:30,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094477544] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:37:30,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:37:30,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 00:37:30,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437395194] [2023-04-01 00:37:30,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:37:30,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 00:37:30,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:37:30,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 00:37:30,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:37:30,831 INFO L87 Difference]: Start difference. First operand 32835 states and 43941 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:37:35,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:37:35,691 INFO L93 Difference]: Finished difference Result 65607 states and 87814 transitions. [2023-04-01 00:37:35,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 00:37:35,691 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 136 [2023-04-01 00:37:35,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:37:35,774 INFO L225 Difference]: With dead ends: 65607 [2023-04-01 00:37:35,774 INFO L226 Difference]: Without dead ends: 32835 [2023-04-01 00:37:35,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 00:37:35,843 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 590 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 00:37:35,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 143 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 00:37:35,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32835 states. [2023-04-01 00:37:40,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32835 to 32835. [2023-04-01 00:37:40,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32835 states, 32831 states have (on average 1.3256068959215375) internal successors, (43521), 32831 states have internal predecessors, (43521), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:37:40,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32835 states to 32835 states and 43524 transitions. [2023-04-01 00:37:40,916 INFO L78 Accepts]: Start accepts. Automaton has 32835 states and 43524 transitions. Word has length 136 [2023-04-01 00:37:40,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:37:40,916 INFO L495 AbstractCegarLoop]: Abstraction has 32835 states and 43524 transitions. [2023-04-01 00:37:40,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:37:40,917 INFO L276 IsEmpty]: Start isEmpty. Operand 32835 states and 43524 transitions. [2023-04-01 00:37:40,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-01 00:37:40,976 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:37:40,976 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 00:37:40,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-01 00:37:40,977 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:37:40,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:37:40,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1123135450, now seen corresponding path program 1 times [2023-04-01 00:37:40,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:37:40,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256072216] [2023-04-01 00:37:40,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:37:40,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:37:41,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:37:41,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 00:37:41,130 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:37:41,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256072216] [2023-04-01 00:37:41,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256072216] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:37:41,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:37:41,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 00:37:41,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758564351] [2023-04-01 00:37:41,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:37:41,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 00:37:41,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:37:41,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 00:37:41,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:37:41,134 INFO L87 Difference]: Start difference. First operand 32835 states and 43524 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 00:37:44,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:37:44,703 INFO L93 Difference]: Finished difference Result 51953 states and 69045 transitions. [2023-04-01 00:37:44,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 00:37:44,703 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 136 [2023-04-01 00:37:44,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:37:44,746 INFO L225 Difference]: With dead ends: 51953 [2023-04-01 00:37:44,746 INFO L226 Difference]: Without dead ends: 21535 [2023-04-01 00:37:44,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-01 00:37:44,790 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 555 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 00:37:44,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 159 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 00:37:44,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21535 states.