/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/combinations/Problem05_label46+token_ring.06.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 02:04:22,399 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 02:04:22,400 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 02:04:22,440 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 02:04:22,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 02:04:22,467 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 02:04:22,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 02:04:22,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 02:04:22,471 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 02:04:22,471 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 02:04:22,474 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 02:04:22,478 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 02:04:22,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 02:04:22,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 02:04:22,481 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 02:04:22,482 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 02:04:22,488 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 02:04:22,495 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 02:04:22,496 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 02:04:22,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 02:04:22,497 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-10 02:04:22,521 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 02:04:22,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 02:04:22,522 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 02:04:22,522 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 02:04:22,523 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 02:04:22,523 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 02:04:22,523 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 02:04:22,523 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 02:04:22,524 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 02:04:22,524 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 02:04:22,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 02:04:22,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 02:04:22,525 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 02:04:22,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 02:04:22,525 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 02:04:22,525 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 02:04:22,525 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 02:04:22,525 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 02:04:22,525 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 02:04:22,525 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 02:04:22,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 02:04:22,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 02:04:22,526 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 02:04:22,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 02:04:22,527 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 02:04:22,527 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 02:04:22,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 02:04:22,527 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 02:04:22,527 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 02:04:22,527 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 02:04:22,528 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 02:04:22,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 02:04:22,727 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 02:04:22,729 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 02:04:22,730 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 02:04:22,730 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 02:04:22,731 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label46+token_ring.06.cil-2.c [2022-01-10 02:04:22,775 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff1724f56/4c25e13beda9403487eb9a5c19d010c6/FLAG3056f5ccf [2022-01-10 02:04:23,385 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 02:04:23,385 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label46+token_ring.06.cil-2.c [2022-01-10 02:04:23,420 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff1724f56/4c25e13beda9403487eb9a5c19d010c6/FLAG3056f5ccf [2022-01-10 02:04:23,510 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff1724f56/4c25e13beda9403487eb9a5c19d010c6 [2022-01-10 02:04:23,512 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 02:04:23,514 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 02:04:23,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 02:04:23,517 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 02:04:23,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 02:04:23,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:04:23" (1/1) ... [2022-01-10 02:04:23,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bdfa861 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:04:23, skipping insertion in model container [2022-01-10 02:04:23,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:04:23" (1/1) ... [2022-01-10 02:04:23,526 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 02:04:23,660 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 02:04:24,803 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label46+token_ring.06.cil-2.c[382357,382370] [2022-01-10 02:04:24,821 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label46+token_ring.06.cil-2.c[383339,383352] [2022-01-10 02:04:24,968 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 02:04:24,979 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 02:04:25,570 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label46+token_ring.06.cil-2.c[382357,382370] [2022-01-10 02:04:25,580 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label46+token_ring.06.cil-2.c[383339,383352] [2022-01-10 02:04:25,595 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 02:04:25,640 INFO L208 MainTranslator]: Completed translation [2022-01-10 02:04:25,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:04:25 WrapperNode [2022-01-10 02:04:25,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 02:04:25,641 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 02:04:25,641 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 02:04:25,641 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 02:04:25,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:04:25" (1/1) ... [2022-01-10 02:04:25,714 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:04:25" (1/1) ... [2022-01-10 02:04:25,957 INFO L137 Inliner]: procedures = 56, calls = 59, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 12851 [2022-01-10 02:04:25,958 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 02:04:25,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 02:04:25,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 02:04:25,959 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 02:04:25,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:04:25" (1/1) ... [2022-01-10 02:04:25,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:04:25" (1/1) ... [2022-01-10 02:04:26,008 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:04:25" (1/1) ... [2022-01-10 02:04:26,008 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:04:25" (1/1) ... [2022-01-10 02:04:26,231 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:04:25" (1/1) ... [2022-01-10 02:04:26,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:04:25" (1/1) ... [2022-01-10 02:04:26,326 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:04:25" (1/1) ... [2022-01-10 02:04:26,381 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 02:04:26,382 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 02:04:26,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 02:04:26,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 02:04:26,400 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:04:25" (1/1) ... [2022-01-10 02:04:26,429 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 02:04:26,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:04:26,447 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) [2022-01-10 02:04:26,516 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 [2022-01-10 02:04:26,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 02:04:26,550 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-01-10 02:04:26,550 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-01-10 02:04:26,550 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 02:04:26,550 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 02:04:26,550 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-01-10 02:04:26,550 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-01-10 02:04:26,550 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-01-10 02:04:26,550 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-01-10 02:04:26,551 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-01-10 02:04:26,551 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-01-10 02:04:26,551 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-01-10 02:04:26,551 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-01-10 02:04:26,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 02:04:26,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 02:04:26,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 02:04:26,729 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 02:04:26,730 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 02:04:31,599 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 02:04:31,621 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 02:04:31,621 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2022-01-10 02:04:31,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:04:31 BoogieIcfgContainer [2022-01-10 02:04:31,624 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 02:04:31,625 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 02:04:31,625 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 02:04:31,628 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 02:04:31,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:04:23" (1/3) ... [2022-01-10 02:04:31,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e930e48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:04:31, skipping insertion in model container [2022-01-10 02:04:31,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:04:25" (2/3) ... [2022-01-10 02:04:31,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e930e48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:04:31, skipping insertion in model container [2022-01-10 02:04:31,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:04:31" (3/3) ... [2022-01-10 02:04:31,630 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.06.cil-2.c [2022-01-10 02:04:31,634 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 02:04:31,634 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 02:04:31,671 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 02:04:31,676 INFO L339 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=PETRI_NET, 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 02:04:31,676 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 02:04:31,709 INFO L276 IsEmpty]: Start isEmpty. Operand has 2415 states, 2386 states have (on average 1.8512154233025986) internal successors, (4417), 2389 states have internal predecessors, (4417), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-01-10 02:04:31,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 02:04:31,718 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:04:31,719 INFO L514 BasicCegarLoop]: 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] [2022-01-10 02:04:31,719 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:04:31,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:04:31,723 INFO L85 PathProgramCache]: Analyzing trace with hash -72843931, now seen corresponding path program 1 times [2022-01-10 02:04:31,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:04:31,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374735198] [2022-01-10 02:04:31,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:04:31,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:04:31,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:31,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:04:31,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:31,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 02:04:31,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:32,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-10 02:04:32,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:32,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-10 02:04:32,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:32,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-10 02:04:32,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:32,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:04:32,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:04:32,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374735198] [2022-01-10 02:04:32,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374735198] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:04:32,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:04:32,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 02:04:32,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281998986] [2022-01-10 02:04:32,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:04:32,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 02:04:32,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:04:32,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 02:04:32,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 02:04:32,083 INFO L87 Difference]: Start difference. First operand has 2415 states, 2386 states have (on average 1.8512154233025986) internal successors, (4417), 2389 states have internal predecessors, (4417), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:04:32,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:04:32,730 INFO L93 Difference]: Finished difference Result 4896 states and 9026 transitions. [2022-01-10 02:04:32,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 02:04:32,732 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-01-10 02:04:32,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:04:32,759 INFO L225 Difference]: With dead ends: 4896 [2022-01-10 02:04:32,760 INFO L226 Difference]: Without dead ends: 2424 [2022-01-10 02:04:32,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:04:32,768 INFO L933 BasicCegarLoop]: 4405 mSDtfsCounter, 582 mSDsluCounter, 12309 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 16714 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 02:04:32,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [600 Valid, 16714 Invalid, 454 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 02:04:32,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2424 states. [2022-01-10 02:04:32,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2424 to 2348. [2022-01-10 02:04:32,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2348 states, 2320 states have (on average 1.8387931034482758) internal successors, (4266), 2322 states have internal predecessors, (4266), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-01-10 02:04:32,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2348 states to 2348 states and 4306 transitions. [2022-01-10 02:04:32,885 INFO L78 Accepts]: Start accepts. Automaton has 2348 states and 4306 transitions. Word has length 112 [2022-01-10 02:04:32,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:04:32,886 INFO L470 AbstractCegarLoop]: Abstraction has 2348 states and 4306 transitions. [2022-01-10 02:04:32,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:04:32,886 INFO L276 IsEmpty]: Start isEmpty. Operand 2348 states and 4306 transitions. [2022-01-10 02:04:32,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 02:04:32,890 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:04:32,890 INFO L514 BasicCegarLoop]: 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] [2022-01-10 02:04:32,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 02:04:32,890 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:04:32,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:04:32,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1103884829, now seen corresponding path program 1 times [2022-01-10 02:04:32,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:04:32,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69062743] [2022-01-10 02:04:32,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:04:32,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:04:32,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:32,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:04:32,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:32,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 02:04:32,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:33,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-10 02:04:33,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:33,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-10 02:04:33,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:33,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-10 02:04:33,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:33,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:04:33,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:04:33,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69062743] [2022-01-10 02:04:33,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69062743] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:04:33,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:04:33,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:04:33,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596982931] [2022-01-10 02:04:33,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:04:33,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:04:33,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:04:33,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:04:33,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:04:33,075 INFO L87 Difference]: Start difference. First operand 2348 states and 4306 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:04:34,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:04:34,724 INFO L93 Difference]: Finished difference Result 2945 states and 5262 transitions. [2022-01-10 02:04:34,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:04:34,724 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-01-10 02:04:34,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:04:34,733 INFO L225 Difference]: With dead ends: 2945 [2022-01-10 02:04:34,733 INFO L226 Difference]: Without dead ends: 2732 [2022-01-10 02:04:34,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:04:34,735 INFO L933 BasicCegarLoop]: 4540 mSDtfsCounter, 4776 mSDsluCounter, 16938 mSDsCounter, 0 mSdLazyCounter, 1864 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4789 SdHoareTripleChecker+Valid, 21478 SdHoareTripleChecker+Invalid, 1933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 02:04:34,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4789 Valid, 21478 Invalid, 1933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1864 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 02:04:34,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2022-01-10 02:04:34,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 2571. [2022-01-10 02:04:34,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2571 states, 2518 states have (on average 1.8177124702144558) internal successors, (4577), 2522 states have internal predecessors, (4577), 37 states have call successors, (37), 12 states have call predecessors, (37), 14 states have return successors, (44), 38 states have call predecessors, (44), 37 states have call successors, (44) [2022-01-10 02:04:34,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2571 states to 2571 states and 4658 transitions. [2022-01-10 02:04:34,788 INFO L78 Accepts]: Start accepts. Automaton has 2571 states and 4658 transitions. Word has length 112 [2022-01-10 02:04:34,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:04:34,788 INFO L470 AbstractCegarLoop]: Abstraction has 2571 states and 4658 transitions. [2022-01-10 02:04:34,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:04:34,789 INFO L276 IsEmpty]: Start isEmpty. Operand 2571 states and 4658 transitions. [2022-01-10 02:04:34,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 02:04:34,791 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:04:34,791 INFO L514 BasicCegarLoop]: 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] [2022-01-10 02:04:34,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 02:04:34,791 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:04:34,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:04:34,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1572107553, now seen corresponding path program 1 times [2022-01-10 02:04:34,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:04:34,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668625987] [2022-01-10 02:04:34,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:04:34,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:04:34,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:34,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:04:34,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:34,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 02:04:34,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:34,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-10 02:04:34,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:34,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-10 02:04:34,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:34,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-10 02:04:34,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:34,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:04:34,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:04:34,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668625987] [2022-01-10 02:04:34,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668625987] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:04:34,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:04:34,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:04:34,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053917739] [2022-01-10 02:04:34,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:04:34,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:04:34,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:04:34,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:04:34,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:04:34,901 INFO L87 Difference]: Start difference. First operand 2571 states and 4658 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:04:36,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:04:36,393 INFO L93 Difference]: Finished difference Result 3704 states and 6454 transitions. [2022-01-10 02:04:36,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:04:36,393 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-01-10 02:04:36,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:04:36,405 INFO L225 Difference]: With dead ends: 3704 [2022-01-10 02:04:36,406 INFO L226 Difference]: Without dead ends: 3270 [2022-01-10 02:04:36,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:04:36,415 INFO L933 BasicCegarLoop]: 4487 mSDtfsCounter, 4800 mSDsluCounter, 16875 mSDsCounter, 0 mSdLazyCounter, 1768 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4813 SdHoareTripleChecker+Valid, 21362 SdHoareTripleChecker+Invalid, 1844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-10 02:04:36,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4813 Valid, 21362 Invalid, 1844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1768 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-10 02:04:36,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3270 states. [2022-01-10 02:04:36,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3270 to 2981. [2022-01-10 02:04:36,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2981 states, 2884 states have (on average 1.782246879334258) internal successors, (5140), 2890 states have internal predecessors, (5140), 67 states have call successors, (67), 24 states have call predecessors, (67), 28 states have return successors, (84), 70 states have call predecessors, (84), 67 states have call successors, (84) [2022-01-10 02:04:36,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2981 states to 2981 states and 5291 transitions. [2022-01-10 02:04:36,493 INFO L78 Accepts]: Start accepts. Automaton has 2981 states and 5291 transitions. Word has length 112 [2022-01-10 02:04:36,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:04:36,494 INFO L470 AbstractCegarLoop]: Abstraction has 2981 states and 5291 transitions. [2022-01-10 02:04:36,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:04:36,494 INFO L276 IsEmpty]: Start isEmpty. Operand 2981 states and 5291 transitions. [2022-01-10 02:04:36,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 02:04:36,497 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:04:36,497 INFO L514 BasicCegarLoop]: 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] [2022-01-10 02:04:36,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 02:04:36,498 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:04:36,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:04:36,498 INFO L85 PathProgramCache]: Analyzing trace with hash 688598563, now seen corresponding path program 1 times [2022-01-10 02:04:36,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:04:36,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114162758] [2022-01-10 02:04:36,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:04:36,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:04:36,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:36,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:04:36,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:36,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 02:04:36,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:36,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-10 02:04:36,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:36,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-10 02:04:36,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:36,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-10 02:04:36,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:36,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:04:36,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:04:36,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114162758] [2022-01-10 02:04:36,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114162758] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:04:36,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:04:36,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:04:36,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924847582] [2022-01-10 02:04:36,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:04:36,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:04:36,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:04:36,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:04:36,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:04:36,607 INFO L87 Difference]: Start difference. First operand 2981 states and 5291 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:04:38,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:04:38,211 INFO L93 Difference]: Finished difference Result 5188 states and 8779 transitions. [2022-01-10 02:04:38,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:04:38,211 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-01-10 02:04:38,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:04:38,228 INFO L225 Difference]: With dead ends: 5188 [2022-01-10 02:04:38,229 INFO L226 Difference]: Without dead ends: 4344 [2022-01-10 02:04:38,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:04:38,235 INFO L933 BasicCegarLoop]: 4531 mSDtfsCounter, 4775 mSDsluCounter, 16938 mSDsCounter, 0 mSdLazyCounter, 1860 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4788 SdHoareTripleChecker+Valid, 21469 SdHoareTripleChecker+Invalid, 1932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 02:04:38,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4788 Valid, 21469 Invalid, 1932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1860 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 02:04:38,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4344 states. [2022-01-10 02:04:38,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4344 to 3803. [2022-01-10 02:04:38,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3803 states, 3618 states have (on average 1.732448866777225) internal successors, (6268), 3628 states have internal predecessors, (6268), 127 states have call successors, (127), 48 states have call predecessors, (127), 56 states have return successors, (170), 134 states have call predecessors, (170), 127 states have call successors, (170) [2022-01-10 02:04:38,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3803 states to 3803 states and 6565 transitions. [2022-01-10 02:04:38,378 INFO L78 Accepts]: Start accepts. Automaton has 3803 states and 6565 transitions. Word has length 112 [2022-01-10 02:04:38,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:04:38,379 INFO L470 AbstractCegarLoop]: Abstraction has 3803 states and 6565 transitions. [2022-01-10 02:04:38,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:04:38,380 INFO L276 IsEmpty]: Start isEmpty. Operand 3803 states and 6565 transitions. [2022-01-10 02:04:38,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 02:04:38,384 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:04:38,386 INFO L514 BasicCegarLoop]: 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] [2022-01-10 02:04:38,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 02:04:38,387 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:04:38,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:04:38,387 INFO L85 PathProgramCache]: Analyzing trace with hash 660098273, now seen corresponding path program 1 times [2022-01-10 02:04:38,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:04:38,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505535029] [2022-01-10 02:04:38,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:04:38,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:04:38,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:38,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:04:38,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:38,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 02:04:38,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:38,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-10 02:04:38,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:38,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-10 02:04:38,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:38,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-10 02:04:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:38,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:04:38,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:04:38,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505535029] [2022-01-10 02:04:38,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505535029] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:04:38,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:04:38,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:04:38,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002276085] [2022-01-10 02:04:38,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:04:38,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:04:38,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:04:38,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:04:38,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:04:38,480 INFO L87 Difference]: Start difference. First operand 3803 states and 6565 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:04:40,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:04:40,027 INFO L93 Difference]: Finished difference Result 8154 states and 13443 transitions. [2022-01-10 02:04:40,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:04:40,028 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-01-10 02:04:40,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:04:40,052 INFO L225 Difference]: With dead ends: 8154 [2022-01-10 02:04:40,053 INFO L226 Difference]: Without dead ends: 6488 [2022-01-10 02:04:40,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:04:40,060 INFO L933 BasicCegarLoop]: 4528 mSDtfsCounter, 4775 mSDsluCounter, 16938 mSDsCounter, 0 mSdLazyCounter, 1854 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4788 SdHoareTripleChecker+Valid, 21466 SdHoareTripleChecker+Invalid, 1926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:04:40,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4788 Valid, 21466 Invalid, 1926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1854 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 02:04:40,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6488 states. [2022-01-10 02:04:40,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6488 to 5453. [2022-01-10 02:04:40,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5453 states, 5092 states have (on average 1.6755695208169679) internal successors, (8532), 5110 states have internal predecessors, (8532), 247 states have call successors, (247), 96 states have call predecessors, (247), 112 states have return successors, (360), 262 states have call predecessors, (360), 247 states have call successors, (360) [2022-01-10 02:04:40,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5453 states to 5453 states and 9139 transitions. [2022-01-10 02:04:40,237 INFO L78 Accepts]: Start accepts. Automaton has 5453 states and 9139 transitions. Word has length 112 [2022-01-10 02:04:40,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:04:40,237 INFO L470 AbstractCegarLoop]: Abstraction has 5453 states and 9139 transitions. [2022-01-10 02:04:40,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:04:40,237 INFO L276 IsEmpty]: Start isEmpty. Operand 5453 states and 9139 transitions. [2022-01-10 02:04:40,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 02:04:40,240 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:04:40,240 INFO L514 BasicCegarLoop]: 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] [2022-01-10 02:04:40,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 02:04:40,241 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:04:40,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:04:40,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1280483741, now seen corresponding path program 1 times [2022-01-10 02:04:40,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:04:40,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745245944] [2022-01-10 02:04:40,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:04:40,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:04:40,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:40,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:04:40,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:40,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 02:04:40,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:40,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-10 02:04:40,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:40,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-10 02:04:40,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:40,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-10 02:04:40,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:40,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:04:40,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:04:40,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745245944] [2022-01-10 02:04:40,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745245944] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:04:40,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:04:40,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:04:40,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789304687] [2022-01-10 02:04:40,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:04:40,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:04:40,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:04:40,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:04:40,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:04:40,321 INFO L87 Difference]: Start difference. First operand 5453 states and 9139 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:04:41,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:04:41,943 INFO L93 Difference]: Finished difference Result 14084 states and 22827 transitions. [2022-01-10 02:04:41,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:04:41,944 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-01-10 02:04:41,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:04:41,997 INFO L225 Difference]: With dead ends: 14084 [2022-01-10 02:04:41,997 INFO L226 Difference]: Without dead ends: 10768 [2022-01-10 02:04:42,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:04:42,011 INFO L933 BasicCegarLoop]: 4525 mSDtfsCounter, 4775 mSDsluCounter, 16938 mSDsCounter, 0 mSdLazyCounter, 1848 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4788 SdHoareTripleChecker+Valid, 21463 SdHoareTripleChecker+Invalid, 1920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:04:42,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4788 Valid, 21463 Invalid, 1920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1848 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 02:04:42,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10768 states. [2022-01-10 02:04:42,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10768 to 8767. [2022-01-10 02:04:42,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8767 states, 8054 states have (on average 1.6240377452197665) internal successors, (13080), 8088 states have internal predecessors, (13080), 487 states have call successors, (487), 192 states have call predecessors, (487), 224 states have return successors, (794), 518 states have call predecessors, (794), 487 states have call successors, (794) [2022-01-10 02:04:42,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8767 states to 8767 states and 14361 transitions. [2022-01-10 02:04:42,364 INFO L78 Accepts]: Start accepts. Automaton has 8767 states and 14361 transitions. Word has length 112 [2022-01-10 02:04:42,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:04:42,364 INFO L470 AbstractCegarLoop]: Abstraction has 8767 states and 14361 transitions. [2022-01-10 02:04:42,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:04:42,365 INFO L276 IsEmpty]: Start isEmpty. Operand 8767 states and 14361 transitions. [2022-01-10 02:04:42,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 02:04:42,370 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:04:42,370 INFO L514 BasicCegarLoop]: 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] [2022-01-10 02:04:42,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 02:04:42,371 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:04:42,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:04:42,371 INFO L85 PathProgramCache]: Analyzing trace with hash 596579489, now seen corresponding path program 1 times [2022-01-10 02:04:42,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:04:42,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392306205] [2022-01-10 02:04:42,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:04:42,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:04:42,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:42,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:04:42,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:42,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 02:04:42,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:42,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-10 02:04:42,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:42,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-10 02:04:42,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:42,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-10 02:04:42,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:42,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:04:42,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:04:42,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392306205] [2022-01-10 02:04:42,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392306205] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:04:42,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:04:42,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:04:42,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472406964] [2022-01-10 02:04:42,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:04:42,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:04:42,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:04:42,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:04:42,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:04:42,460 INFO L87 Difference]: Start difference. First operand 8767 states and 14361 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:04:44,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:04:44,331 INFO L93 Difference]: Finished difference Result 25942 states and 41783 transitions. [2022-01-10 02:04:44,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:04:44,332 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-01-10 02:04:44,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:04:44,384 INFO L225 Difference]: With dead ends: 25942 [2022-01-10 02:04:44,384 INFO L226 Difference]: Without dead ends: 19312 [2022-01-10 02:04:44,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:04:44,407 INFO L933 BasicCegarLoop]: 4522 mSDtfsCounter, 4775 mSDsluCounter, 16938 mSDsCounter, 0 mSdLazyCounter, 1842 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4788 SdHoareTripleChecker+Valid, 21460 SdHoareTripleChecker+Invalid, 1914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:04:44,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4788 Valid, 21460 Invalid, 1914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1842 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 02:04:44,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19312 states. [2022-01-10 02:04:44,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19312 to 15425. [2022-01-10 02:04:44,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15425 states, 14008 states have (on average 1.5862364363221018) internal successors, (22220), 14074 states have internal predecessors, (22220), 967 states have call successors, (967), 384 states have call predecessors, (967), 448 states have return successors, (1824), 1030 states have call predecessors, (1824), 967 states have call successors, (1824) [2022-01-10 02:04:44,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15425 states to 15425 states and 25011 transitions. [2022-01-10 02:04:44,962 INFO L78 Accepts]: Start accepts. Automaton has 15425 states and 25011 transitions. Word has length 112 [2022-01-10 02:04:44,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:04:44,965 INFO L470 AbstractCegarLoop]: Abstraction has 15425 states and 25011 transitions. [2022-01-10 02:04:44,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:04:44,967 INFO L276 IsEmpty]: Start isEmpty. Operand 15425 states and 25011 transitions. [2022-01-10 02:04:44,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 02:04:44,977 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:04:44,977 INFO L514 BasicCegarLoop]: 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] [2022-01-10 02:04:44,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 02:04:44,978 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:04:44,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:04:44,978 INFO L85 PathProgramCache]: Analyzing trace with hash -174154077, now seen corresponding path program 1 times [2022-01-10 02:04:44,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:04:44,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676853883] [2022-01-10 02:04:44,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:04:44,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:04:44,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:45,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:04:45,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:45,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 02:04:45,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:45,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-10 02:04:45,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:45,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-10 02:04:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:45,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-10 02:04:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:45,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:04:45,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:04:45,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676853883] [2022-01-10 02:04:45,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676853883] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:04:45,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:04:45,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:04:45,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562927152] [2022-01-10 02:04:45,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:04:45,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:04:45,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:04:45,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:04:45,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:04:45,066 INFO L87 Difference]: Start difference. First operand 15425 states and 25011 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:04:48,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:04:48,183 INFO L93 Difference]: Finished difference Result 55608 states and 89253 transitions. [2022-01-10 02:04:48,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 02:04:48,184 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-01-10 02:04:48,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:04:48,317 INFO L225 Difference]: With dead ends: 55608 [2022-01-10 02:04:48,317 INFO L226 Difference]: Without dead ends: 42320 [2022-01-10 02:04:48,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-01-10 02:04:48,365 INFO L933 BasicCegarLoop]: 4515 mSDtfsCounter, 5030 mSDsluCounter, 16930 mSDsCounter, 0 mSdLazyCounter, 1826 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5050 SdHoareTripleChecker+Valid, 21445 SdHoareTripleChecker+Invalid, 1906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:04:48,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5050 Valid, 21445 Invalid, 1906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1826 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 02:04:48,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42320 states. [2022-01-10 02:04:49,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42320 to 28611. [2022-01-10 02:04:49,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28611 states, 25850 states have (on average 1.565338491295938) internal successors, (40464), 25980 states have internal predecessors, (40464), 1863 states have call successors, (1863), 768 states have call predecessors, (1863), 896 states have return successors, (4306), 1990 states have call predecessors, (4306), 1863 states have call successors, (4306) [2022-01-10 02:04:49,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28611 states to 28611 states and 46633 transitions. [2022-01-10 02:04:49,678 INFO L78 Accepts]: Start accepts. Automaton has 28611 states and 46633 transitions. Word has length 112 [2022-01-10 02:04:49,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:04:49,678 INFO L470 AbstractCegarLoop]: Abstraction has 28611 states and 46633 transitions. [2022-01-10 02:04:49,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:04:49,678 INFO L276 IsEmpty]: Start isEmpty. Operand 28611 states and 46633 transitions. [2022-01-10 02:04:49,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 02:04:49,695 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:04:49,695 INFO L514 BasicCegarLoop]: 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] [2022-01-10 02:04:49,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 02:04:49,696 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:04:49,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:04:49,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1168847775, now seen corresponding path program 1 times [2022-01-10 02:04:49,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:04:49,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881387205] [2022-01-10 02:04:49,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:04:49,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:04:49,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:49,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:04:49,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:49,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 02:04:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:49,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-10 02:04:49,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:49,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-10 02:04:49,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:49,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-10 02:04:49,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:49,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:04:49,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:04:49,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881387205] [2022-01-10 02:04:49,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881387205] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:04:49,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:04:49,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:04:49,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137665020] [2022-01-10 02:04:49,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:04:49,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:04:49,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:04:49,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:04:49,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:04:49,782 INFO L87 Difference]: Start difference. First operand 28611 states and 46633 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:04:55,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:04:55,187 INFO L93 Difference]: Finished difference Result 105085 states and 171193 transitions. [2022-01-10 02:04:55,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 02:04:55,188 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-01-10 02:04:55,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:04:55,495 INFO L225 Difference]: With dead ends: 105085 [2022-01-10 02:04:55,496 INFO L226 Difference]: Without dead ends: 78611 [2022-01-10 02:04:55,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-01-10 02:04:55,582 INFO L933 BasicCegarLoop]: 4507 mSDtfsCounter, 4964 mSDsluCounter, 16930 mSDsCounter, 0 mSdLazyCounter, 1779 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4984 SdHoareTripleChecker+Valid, 21437 SdHoareTripleChecker+Invalid, 1860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 02:04:55,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4984 Valid, 21437 Invalid, 1860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1779 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 02:04:55,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78611 states. [2022-01-10 02:04:58,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78611 to 55045. [2022-01-10 02:04:58,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55045 states, 49660 states have (on average 1.5559403946838501) internal successors, (77268), 49918 states have internal predecessors, (77268), 3591 states have call successors, (3591), 1536 states have call predecessors, (3591), 1792 states have return successors, (10664), 3846 states have call predecessors, (10664), 3591 states have call successors, (10664) [2022-01-10 02:04:58,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55045 states to 55045 states and 91523 transitions. [2022-01-10 02:04:58,528 INFO L78 Accepts]: Start accepts. Automaton has 55045 states and 91523 transitions. Word has length 112 [2022-01-10 02:04:58,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:04:58,529 INFO L470 AbstractCegarLoop]: Abstraction has 55045 states and 91523 transitions. [2022-01-10 02:04:58,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:04:58,529 INFO L276 IsEmpty]: Start isEmpty. Operand 55045 states and 91523 transitions. [2022-01-10 02:04:58,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 02:04:58,558 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:04:58,558 INFO L514 BasicCegarLoop]: 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] [2022-01-10 02:04:58,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 02:04:58,558 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:04:58,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:04:58,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1167544735, now seen corresponding path program 1 times [2022-01-10 02:04:58,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:04:58,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472337051] [2022-01-10 02:04:58,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:04:58,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:04:58,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:58,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:04:58,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:58,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 02:04:58,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:58,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-10 02:04:58,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:58,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-10 02:04:58,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:58,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-10 02:04:58,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:04:58,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:04:58,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:04:58,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472337051] [2022-01-10 02:04:58,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472337051] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:04:58,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:04:58,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:04:58,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692618924] [2022-01-10 02:04:58,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:04:58,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:04:58,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:04:58,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:04:58,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:04:58,647 INFO L87 Difference]: Start difference. First operand 55045 states and 91523 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:05:08,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:05:08,181 INFO L93 Difference]: Finished difference Result 203331 states and 339677 transitions. [2022-01-10 02:05:08,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 02:05:08,181 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-01-10 02:05:08,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:05:08,982 INFO L225 Difference]: With dead ends: 203331 [2022-01-10 02:05:08,982 INFO L226 Difference]: Without dead ends: 150423 [2022-01-10 02:05:09,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-01-10 02:05:09,111 INFO L933 BasicCegarLoop]: 4472 mSDtfsCounter, 4937 mSDsluCounter, 16870 mSDsCounter, 0 mSdLazyCounter, 1722 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4957 SdHoareTripleChecker+Valid, 21342 SdHoareTripleChecker+Invalid, 1807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 02:05:09,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4957 Valid, 21342 Invalid, 1807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1722 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 02:05:09,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150423 states. [2022-01-10 02:05:14,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150423 to 107785. [2022-01-10 02:05:14,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107785 states, 97280 states have (on average 1.5522615131578947) internal successors, (151004), 97794 states have internal predecessors, (151004), 6919 states have call successors, (6919), 3072 states have call predecessors, (6919), 3584 states have return successors, (27626), 7430 states have call predecessors, (27626), 6919 states have call successors, (27626) [2022-01-10 02:05:15,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107785 states to 107785 states and 185549 transitions. [2022-01-10 02:05:15,574 INFO L78 Accepts]: Start accepts. Automaton has 107785 states and 185549 transitions. Word has length 112 [2022-01-10 02:05:15,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:05:15,574 INFO L470 AbstractCegarLoop]: Abstraction has 107785 states and 185549 transitions. [2022-01-10 02:05:15,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:05:15,575 INFO L276 IsEmpty]: Start isEmpty. Operand 107785 states and 185549 transitions. [2022-01-10 02:05:15,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 02:05:15,634 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:05:15,634 INFO L514 BasicCegarLoop]: 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] [2022-01-10 02:05:15,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 02:05:15,634 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:05:15,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:05:15,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1250939743, now seen corresponding path program 1 times [2022-01-10 02:05:15,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:05:15,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118941917] [2022-01-10 02:05:15,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:05:15,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:05:15,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:05:15,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:05:15,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:05:15,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-10 02:05:15,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:05:15,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-01-10 02:05:15,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:05:15,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-10 02:05:15,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:05:15,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-01-10 02:05:15,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:05:15,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:05:15,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:05:15,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118941917] [2022-01-10 02:05:15,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118941917] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:05:15,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:05:15,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:05:15,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594058715] [2022-01-10 02:05:15,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:05:15,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:05:15,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:05:15,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:05:15,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:05:15,862 INFO L87 Difference]: Start difference. First operand 107785 states and 185549 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)