/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.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 00:36:25,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 00:36:25,576 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 00:36:25,615 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 00:36:25,634 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 00:36:25,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 00:36:25,637 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 00:36:25,638 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 00:36:25,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 00:36:25,640 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 00:36:25,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 00:36:25,647 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 00:36:25,648 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 00:36:25,649 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 00:36:25,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 00:36:25,652 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 00:36:25,660 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 00:36:25,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 00:36:25,667 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 00:36:25,668 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 00:36:25,670 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 00:36:25,703 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 00:36:25,703 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 00:36:25,703 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 00:36:25,704 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 00:36:25,704 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 00:36:25,704 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 00:36:25,705 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 00:36:25,705 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 00:36:25,705 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 00:36:25,705 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 00:36:25,706 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 00:36:25,706 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 00:36:25,706 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 00:36:25,706 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 00:36:25,706 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 00:36:25,706 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 00:36:25,706 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 00:36:25,707 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 00:36:25,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 00:36:25,707 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 00:36:25,707 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 00:36:25,707 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 00:36:25,707 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 00:36:25,708 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 00:36:25,708 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 00:36:25,708 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 00:36:25,708 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 00:36:25,708 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 00:36:25,708 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 00:36:25,708 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 00:36:25,709 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 00:36:25,709 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 00:36:25,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 00:36:25,709 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 00:36:25,709 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 00:36:25,709 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 00:36:25,709 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 00:36:25,709 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 00:36:25,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 00:36:25,710 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 00:36:25,710 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 00:36:25,710 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-04-01 00:36:25,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 00:36:25,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 00:36:25,972 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 00:36:25,973 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 00:36:25,973 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 00:36:25,974 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2023-04-01 00:36:27,115 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 00:36:27,341 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 00:36:27,341 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2023-04-01 00:36:27,357 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f845afd9/4b15828d53464e85a3269e7c5011301e/FLAG9a96b15a4 [2023-04-01 00:36:27,367 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f845afd9/4b15828d53464e85a3269e7c5011301e [2023-04-01 00:36:27,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 00:36:27,370 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 00:36:27,371 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 00:36:27,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 00:36:27,375 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 00:36:27,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:36:27" (1/1) ... [2023-04-01 00:36:27,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70add0e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:36:27, skipping insertion in model container [2023-04-01 00:36:27,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 12:36:27" (1/1) ... [2023-04-01 00:36:27,383 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 00:36:27,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 00:36:27,617 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.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c[9243,9256] [2023-04-01 00:36:27,659 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 00:36:27,674 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 00:36:27,735 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.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c[9243,9256] [2023-04-01 00:36:27,785 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 00:36:27,801 INFO L208 MainTranslator]: Completed translation [2023-04-01 00:36:27,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:36:27 WrapperNode [2023-04-01 00:36:27,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 00:36:27,802 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 00:36:27,802 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 00:36:27,802 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 00:36:27,812 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:36:27" (1/1) ... [2023-04-01 00:36:27,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:36:27" (1/1) ... [2023-04-01 00:36:27,824 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:36:27" (1/1) ... [2023-04-01 00:36:27,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:36:27" (1/1) ... [2023-04-01 00:36:27,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:36:27" (1/1) ... [2023-04-01 00:36:27,847 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:36:27" (1/1) ... [2023-04-01 00:36:27,850 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:36:27" (1/1) ... [2023-04-01 00:36:27,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:36:27" (1/1) ... [2023-04-01 00:36:27,857 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 00:36:27,858 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 00:36:27,858 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 00:36:27,859 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 00:36:27,859 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:36:27" (1/1) ... [2023-04-01 00:36:27,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 00:36:27,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 00:36:27,895 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 00:36:27,900 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 00:36:27,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 00:36:27,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 00:36:27,937 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 00:36:27,937 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 00:36:27,937 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 00:36:27,937 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 00:36:27,937 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 00:36:27,937 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 00:36:27,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 00:36:27,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-01 00:36:27,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-01 00:36:27,938 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-01 00:36:27,938 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 00:36:27,938 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-01 00:36:27,938 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-01 00:36:27,938 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-01 00:36:27,938 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-01 00:36:27,938 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-01 00:36:27,938 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-01 00:36:27,938 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-01 00:36:27,939 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2023-04-01 00:36:27,939 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-01 00:36:27,939 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-01 00:36:27,939 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 00:36:27,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 00:36:27,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 00:36:27,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 00:36:27,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 00:36:27,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 00:36:27,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 00:36:28,094 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 00:36:28,096 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 00:36:28,799 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 00:36:28,961 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 00:36:28,961 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-01 00:36:28,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:36:28 BoogieIcfgContainer [2023-04-01 00:36:28,967 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 00:36:28,970 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 00:36:28,970 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 00:36:28,973 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 00:36:28,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 12:36:27" (1/3) ... [2023-04-01 00:36:28,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b70adb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:36:28, skipping insertion in model container [2023-04-01 00:36:28,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 12:36:27" (2/3) ... [2023-04-01 00:36:28,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b70adb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 12:36:28, skipping insertion in model container [2023-04-01 00:36:28,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 12:36:28" (3/3) ... [2023-04-01 00:36:28,976 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2023-04-01 00:36:28,994 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 00:36:28,995 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 00:36:29,064 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 00:36:29,069 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;@5a132cd8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 00:36:29,069 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 00:36:29,073 INFO L276 IsEmpty]: Start isEmpty. Operand has 134 states, 127 states have (on average 1.763779527559055) internal successors, (224), 129 states have internal predecessors, (224), 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 00:36:29,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-01 00:36:29,082 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:29,082 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] [2023-04-01 00:36:29,083 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:36:29,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:29,087 INFO L85 PathProgramCache]: Analyzing trace with hash -353465809, now seen corresponding path program 1 times [2023-04-01 00:36:29,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:29,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589709443] [2023-04-01 00:36:29,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:29,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:29,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:29,835 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 00:36:29,836 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:29,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589709443] [2023-04-01 00:36:29,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589709443] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:29,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:29,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 00:36:29,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819125938] [2023-04-01 00:36:29,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:29,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 00:36:29,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:29,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 00:36:29,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:36:29,887 INFO L87 Difference]: Start difference. First operand has 134 states, 127 states have (on average 1.763779527559055) internal successors, (224), 129 states have internal predecessors, (224), 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 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 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 00:36:30,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:30,175 INFO L93 Difference]: Finished difference Result 206 states and 332 transitions. [2023-04-01 00:36:30,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 00:36:30,177 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 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 82 [2023-04-01 00:36:30,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:30,192 INFO L225 Difference]: With dead ends: 206 [2023-04-01 00:36:30,192 INFO L226 Difference]: Without dead ends: 129 [2023-04-01 00:36:30,196 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 00:36:30,201 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 508 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:30,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 238 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 00:36:30,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-04-01 00:36:30,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2023-04-01 00:36:30,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 125 states have (on average 1.208) internal successors, (151), 125 states have internal predecessors, (151), 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 00:36:30,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 154 transitions. [2023-04-01 00:36:30,274 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 154 transitions. Word has length 82 [2023-04-01 00:36:30,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:30,276 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 154 transitions. [2023-04-01 00:36:30,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 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 00:36:30,276 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 154 transitions. [2023-04-01 00:36:30,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-01 00:36:30,280 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:30,280 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] [2023-04-01 00:36:30,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 00:36:30,281 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:36:30,282 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:30,282 INFO L85 PathProgramCache]: Analyzing trace with hash 2109941317, now seen corresponding path program 1 times [2023-04-01 00:36:30,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:30,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367390112] [2023-04-01 00:36:30,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:30,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:30,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:30,576 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 00:36:30,577 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:30,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367390112] [2023-04-01 00:36:30,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367390112] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:30,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:30,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 00:36:30,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606025606] [2023-04-01 00:36:30,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:30,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 00:36:30,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:30,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 00:36:30,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:36:30,581 INFO L87 Difference]: Start difference. First operand 129 states and 154 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 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 00:36:30,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:30,736 INFO L93 Difference]: Finished difference Result 204 states and 252 transitions. [2023-04-01 00:36:30,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 00:36:30,738 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 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 83 [2023-04-01 00:36:30,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:30,747 INFO L225 Difference]: With dead ends: 204 [2023-04-01 00:36:30,747 INFO L226 Difference]: Without dead ends: 129 [2023-04-01 00:36:30,750 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 00:36:30,752 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 381 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:30,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 94 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 00:36:30,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-04-01 00:36:30,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2023-04-01 00:36:30,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 125 states have (on average 1.192) internal successors, (149), 125 states have internal predecessors, (149), 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 00:36:30,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 152 transitions. [2023-04-01 00:36:30,773 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 152 transitions. Word has length 83 [2023-04-01 00:36:30,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:30,775 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 152 transitions. [2023-04-01 00:36:30,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 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 00:36:30,775 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 152 transitions. [2023-04-01 00:36:30,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-01 00:36:30,781 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:30,781 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] [2023-04-01 00:36:30,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 00:36:30,781 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:36:30,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:30,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1567844527, now seen corresponding path program 1 times [2023-04-01 00:36:30,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:30,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558867780] [2023-04-01 00:36:30,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:30,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:30,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:31,001 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 00:36:31,002 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:31,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558867780] [2023-04-01 00:36:31,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558867780] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:31,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:31,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 00:36:31,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943750530] [2023-04-01 00:36:31,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:31,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 00:36:31,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:31,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 00:36:31,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:36:31,005 INFO L87 Difference]: Start difference. First operand 129 states and 152 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 00:36:31,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:31,132 INFO L93 Difference]: Finished difference Result 200 states and 244 transitions. [2023-04-01 00:36:31,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 00:36:31,133 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 84 [2023-04-01 00:36:31,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:31,135 INFO L225 Difference]: With dead ends: 200 [2023-04-01 00:36:31,135 INFO L226 Difference]: Without dead ends: 129 [2023-04-01 00:36:31,138 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 00:36:31,141 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 363 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:31,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 102 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 00:36:31,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-04-01 00:36:31,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2023-04-01 00:36:31,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 125 states have (on average 1.176) internal successors, (147), 125 states have internal predecessors, (147), 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 00:36:31,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 150 transitions. [2023-04-01 00:36:31,163 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 150 transitions. Word has length 84 [2023-04-01 00:36:31,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:31,163 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 150 transitions. [2023-04-01 00:36:31,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 00:36:31,164 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 150 transitions. [2023-04-01 00:36:31,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-04-01 00:36:31,166 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:31,166 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] [2023-04-01 00:36:31,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 00:36:31,167 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:36:31,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:31,168 INFO L85 PathProgramCache]: Analyzing trace with hash 995509558, now seen corresponding path program 1 times [2023-04-01 00:36:31,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:31,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563838647] [2023-04-01 00:36:31,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:31,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:31,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:31,318 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 00:36:31,319 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:31,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563838647] [2023-04-01 00:36:31,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563838647] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:31,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:31,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 00:36:31,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426933681] [2023-04-01 00:36:31,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:31,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 00:36:31,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:31,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 00:36:31,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:36:31,321 INFO L87 Difference]: Start difference. First operand 129 states and 150 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 00:36:31,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:31,427 INFO L93 Difference]: Finished difference Result 196 states and 236 transitions. [2023-04-01 00:36:31,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 00:36:31,428 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 85 [2023-04-01 00:36:31,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:31,430 INFO L225 Difference]: With dead ends: 196 [2023-04-01 00:36:31,430 INFO L226 Difference]: Without dead ends: 129 [2023-04-01 00:36:31,433 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 00:36:31,439 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 345 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:31,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 110 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 00:36:31,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-04-01 00:36:31,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2023-04-01 00:36:31,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 125 states have (on average 1.16) internal successors, (145), 125 states have internal predecessors, (145), 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 00:36:31,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 148 transitions. [2023-04-01 00:36:31,459 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 148 transitions. Word has length 85 [2023-04-01 00:36:31,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:31,460 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 148 transitions. [2023-04-01 00:36:31,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 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 00:36:31,460 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 148 transitions. [2023-04-01 00:36:31,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-04-01 00:36:31,465 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:31,466 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] [2023-04-01 00:36:31,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 00:36:31,466 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:36:31,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:31,466 INFO L85 PathProgramCache]: Analyzing trace with hash -742015490, now seen corresponding path program 1 times [2023-04-01 00:36:31,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:31,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654764731] [2023-04-01 00:36:31,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:31,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:31,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:31,637 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 00:36:31,637 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:31,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654764731] [2023-04-01 00:36:31,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654764731] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:31,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:31,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 00:36:31,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262241984] [2023-04-01 00:36:31,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:31,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 00:36:31,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:31,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 00:36:31,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:36:31,644 INFO L87 Difference]: Start difference. First operand 129 states and 148 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 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 00:36:31,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:31,773 INFO L93 Difference]: Finished difference Result 192 states and 228 transitions. [2023-04-01 00:36:31,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 00:36:31,774 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 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 86 [2023-04-01 00:36:31,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:31,776 INFO L225 Difference]: With dead ends: 192 [2023-04-01 00:36:31,776 INFO L226 Difference]: Without dead ends: 129 [2023-04-01 00:36:31,776 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 00:36:31,777 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 327 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:31,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 118 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 00:36:31,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-04-01 00:36:31,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2023-04-01 00:36:31,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 125 states have (on average 1.144) internal successors, (143), 125 states have internal predecessors, (143), 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 00:36:31,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 146 transitions. [2023-04-01 00:36:31,792 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 146 transitions. Word has length 86 [2023-04-01 00:36:31,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:31,794 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 146 transitions. [2023-04-01 00:36:31,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 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 00:36:31,794 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 146 transitions. [2023-04-01 00:36:31,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-04-01 00:36:31,794 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:31,795 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] [2023-04-01 00:36:31,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 00:36:31,795 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:36:31,795 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:31,795 INFO L85 PathProgramCache]: Analyzing trace with hash 2034730919, now seen corresponding path program 1 times [2023-04-01 00:36:31,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:31,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515116690] [2023-04-01 00:36:31,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:31,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:31,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:31,957 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 00:36:31,957 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:31,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515116690] [2023-04-01 00:36:31,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515116690] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:31,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:31,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 00:36:31,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105102539] [2023-04-01 00:36:31,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:31,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 00:36:31,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:31,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 00:36:31,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 00:36:31,959 INFO L87 Difference]: Start difference. First operand 129 states and 146 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 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 00:36:32,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:36:32,078 INFO L93 Difference]: Finished difference Result 208 states and 241 transitions. [2023-04-01 00:36:32,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 00:36:32,078 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 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 87 [2023-04-01 00:36:32,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:36:32,079 INFO L225 Difference]: With dead ends: 208 [2023-04-01 00:36:32,079 INFO L226 Difference]: Without dead ends: 129 [2023-04-01 00:36:32,080 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 00:36:32,081 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 305 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 00:36:32,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 116 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 00:36:32,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-04-01 00:36:32,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2023-04-01 00:36:32,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 125 states have (on average 1.136) internal successors, (142), 125 states have internal predecessors, (142), 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 00:36:32,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 145 transitions. [2023-04-01 00:36:32,095 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 145 transitions. Word has length 87 [2023-04-01 00:36:32,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:36:32,095 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 145 transitions. [2023-04-01 00:36:32,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 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 00:36:32,095 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 145 transitions. [2023-04-01 00:36:32,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-04-01 00:36:32,096 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:36:32,096 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] [2023-04-01 00:36:32,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-01 00:36:32,096 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:36:32,097 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:36:32,097 INFO L85 PathProgramCache]: Analyzing trace with hash 742891618, now seen corresponding path program 1 times [2023-04-01 00:36:32,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:36:32,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362890522] [2023-04-01 00:36:32,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:36:32,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:36:32,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:36:44,950 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 00:36:44,950 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:36:44,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362890522] [2023-04-01 00:36:44,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362890522] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:36:44,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:36:44,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2023-04-01 00:36:44,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652389493] [2023-04-01 00:36:44,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:36:44,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-04-01 00:36:44,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:36:44,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-04-01 00:36:44,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1788, Unknown=0, NotChecked=0, Total=1980 [2023-04-01 00:36:44,953 INFO L87 Difference]: Start difference. First operand 129 states and 145 transitions. Second operand has 45 states, 45 states have (on average 1.8888888888888888) internal successors, (85), 44 states have internal predecessors, (85), 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 00:37:04,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 00:37:04,004 INFO L93 Difference]: Finished difference Result 307 states and 383 transitions. [2023-04-01 00:37:04,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-04-01 00:37:04,004 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.8888888888888888) internal successors, (85), 44 states have internal predecessors, (85), 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 88 [2023-04-01 00:37:04,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 00:37:04,007 INFO L225 Difference]: With dead ends: 307 [2023-04-01 00:37:04,007 INFO L226 Difference]: Without dead ends: 261 [2023-04-01 00:37:04,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1330 ImplicationChecksByTransitivity, 19.9s TimeCoverageRelationStatistics Valid=1655, Invalid=5655, Unknown=0, NotChecked=0, Total=7310 [2023-04-01 00:37:04,010 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 1387 mSDsluCounter, 1616 mSDsCounter, 0 mSdLazyCounter, 3278 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1387 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 3343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-04-01 00:37:04,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1387 Valid, 1698 Invalid, 3343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3278 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-04-01 00:37:04,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-04-01 00:37:04,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 170. [2023-04-01 00:37:04,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 166 states have (on average 1.1867469879518073) internal successors, (197), 166 states have internal predecessors, (197), 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 00:37:04,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 200 transitions. [2023-04-01 00:37:04,053 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 200 transitions. Word has length 88 [2023-04-01 00:37:04,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 00:37:04,054 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 200 transitions. [2023-04-01 00:37:04,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.8888888888888888) internal successors, (85), 44 states have internal predecessors, (85), 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 00:37:04,054 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 200 transitions. [2023-04-01 00:37:04,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-04-01 00:37:04,055 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 00:37:04,055 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] [2023-04-01 00:37:04,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-01 00:37:04,055 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 00:37:04,056 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 00:37:04,056 INFO L85 PathProgramCache]: Analyzing trace with hash -2044692156, now seen corresponding path program 1 times [2023-04-01 00:37:04,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 00:37:04,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100268576] [2023-04-01 00:37:04,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 00:37:04,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 00:37:04,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 00:37:17,018 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 00:37:17,019 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 00:37:17,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100268576] [2023-04-01 00:37:17,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100268576] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 00:37:17,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 00:37:17,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2023-04-01 00:37:17,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337957689] [2023-04-01 00:37:17,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 00:37:17,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-04-01 00:37:17,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 00:37:17,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-04-01 00:37:17,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1878, Unknown=0, NotChecked=0, Total=2070 [2023-04-01 00:37:17,022 INFO L87 Difference]: Start difference. First operand 170 states and 200 transitions. Second operand has 46 states, 46 states have (on average 1.891304347826087) internal successors, (87), 45 states have internal predecessors, (87), 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)