/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/systemc/transmitter.03.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 01:07:54,978 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 01:07:54,980 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 01:07:55,025 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 01:07:55,025 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 01:07:55,042 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 01:07:55,044 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 01:07:55,045 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 01:07:55,046 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 01:07:55,047 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 01:07:55,048 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 01:07:55,049 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 01:07:55,049 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 01:07:55,050 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 01:07:55,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 01:07:55,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 01:07:55,052 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 01:07:55,053 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 01:07:55,055 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 01:07:55,065 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 01:07:55,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 01:07:55,073 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 01:07:55,074 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 01:07:55,075 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 01:07:55,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 01:07:55,083 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 01:07:55,084 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 01:07:55,084 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 01:07:55,085 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 01:07:55,105 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 01:07:55,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 01:07:55,106 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 01:07:55,106 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 01:07:55,106 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 01:07:55,106 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 01:07:55,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 01:07:55,107 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 01:07:55,107 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 01:07:55,107 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 01:07:55,107 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 01:07:55,108 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 01:07:55,108 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 01:07:55,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 01:07:55,108 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 01:07:55,108 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 01:07:55,108 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 01:07:55,108 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 01:07:55,108 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 01:07:55,108 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 01:07:55,109 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 01:07:55,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:07:55,109 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 01:07:55,109 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 01:07:55,109 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 01:07:55,109 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 01:07:55,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 01:07:55,109 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 01:07:55,110 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 01:07:55,110 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 01:07:55,110 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 01:07:55,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 01:07:55,365 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 01:07:55,368 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 01:07:55,369 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 01:07:55,370 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 01:07:55,371 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.03.cil.c [2022-01-10 01:07:55,427 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8da96fbc/1d0dd665f3fe454f916c1b93d4b94dfb/FLAGbef8067d0 [2022-01-10 01:07:55,796 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 01:07:55,797 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/transmitter.03.cil.c [2022-01-10 01:07:55,815 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8da96fbc/1d0dd665f3fe454f916c1b93d4b94dfb/FLAGbef8067d0 [2022-01-10 01:07:56,181 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8da96fbc/1d0dd665f3fe454f916c1b93d4b94dfb [2022-01-10 01:07:56,183 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 01:07:56,184 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 01:07:56,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 01:07:56,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 01:07:56,193 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 01:07:56,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:07:56" (1/1) ... [2022-01-10 01:07:56,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33f44fc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:56, skipping insertion in model container [2022-01-10 01:07:56,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:07:56" (1/1) ... [2022-01-10 01:07:56,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 01:07:56,232 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 01:07:56,431 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/transmitter.03.cil.c[706,719] [2022-01-10 01:07:56,511 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:07:56,518 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 01:07:56,535 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/transmitter.03.cil.c[706,719] [2022-01-10 01:07:56,582 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:07:56,602 INFO L208 MainTranslator]: Completed translation [2022-01-10 01:07:56,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:56 WrapperNode [2022-01-10 01:07:56,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 01:07:56,605 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 01:07:56,605 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 01:07:56,605 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 01:07:56,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:56" (1/1) ... [2022-01-10 01:07:56,628 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:56" (1/1) ... [2022-01-10 01:07:56,664 INFO L137 Inliner]: procedures = 34, calls = 39, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 321 [2022-01-10 01:07:56,665 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 01:07:56,666 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 01:07:56,666 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 01:07:56,666 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 01:07:56,673 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:56" (1/1) ... [2022-01-10 01:07:56,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:56" (1/1) ... [2022-01-10 01:07:56,686 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:56" (1/1) ... [2022-01-10 01:07:56,686 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:56" (1/1) ... [2022-01-10 01:07:56,691 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:56" (1/1) ... [2022-01-10 01:07:56,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:56" (1/1) ... [2022-01-10 01:07:56,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:56" (1/1) ... [2022-01-10 01:07:56,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 01:07:56,712 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 01:07:56,712 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 01:07:56,712 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 01:07:56,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:56" (1/1) ... [2022-01-10 01:07:56,726 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:07:56,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:07:56,753 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 01:07:56,765 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 01:07:56,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 01:07:56,790 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-01-10 01:07:56,790 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-01-10 01:07:56,790 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-01-10 01:07:56,790 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-01-10 01:07:56,790 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 01:07:56,791 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 01:07:56,791 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-01-10 01:07:56,791 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-01-10 01:07:56,791 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-01-10 01:07:56,791 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-01-10 01:07:56,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 01:07:56,791 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-01-10 01:07:56,791 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-01-10 01:07:56,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 01:07:56,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 01:07:56,879 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 01:07:56,881 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 01:07:57,200 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 01:07:57,207 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 01:07:57,207 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2022-01-10 01:07:57,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:07:57 BoogieIcfgContainer [2022-01-10 01:07:57,209 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 01:07:57,211 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 01:07:57,227 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 01:07:57,230 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 01:07:57,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:07:56" (1/3) ... [2022-01-10 01:07:57,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a5e631d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:07:57, skipping insertion in model container [2022-01-10 01:07:57,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:56" (2/3) ... [2022-01-10 01:07:57,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a5e631d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:07:57, skipping insertion in model container [2022-01-10 01:07:57,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:07:57" (3/3) ... [2022-01-10 01:07:57,233 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.03.cil.c [2022-01-10 01:07:57,237 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 01:07:57,237 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 01:07:57,278 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 01:07:57,282 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 01:07:57,283 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 01:07:57,299 INFO L276 IsEmpty]: Start isEmpty. Operand has 153 states, 129 states have (on average 1.5891472868217054) internal successors, (205), 131 states have internal predecessors, (205), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-01-10 01:07:57,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 01:07:57,307 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:07:57,308 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] [2022-01-10 01:07:57,308 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:07:57,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:07:57,312 INFO L85 PathProgramCache]: Analyzing trace with hash 377890557, now seen corresponding path program 1 times [2022-01-10 01:07:57,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:07:57,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40200861] [2022-01-10 01:07:57,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:07:57,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:07:57,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:57,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:07:57,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:57,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 01:07:57,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:57,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-10 01:07:57,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:57,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-10 01:07:57,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:57,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:07:57,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:57,592 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 01:07:57,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:07:57,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40200861] [2022-01-10 01:07:57,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40200861] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:07:57,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:07:57,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 01:07:57,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595268571] [2022-01-10 01:07:57,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:07:57,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 01:07:57,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:07:57,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 01:07:57,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:07:57,622 INFO L87 Difference]: Start difference. First operand has 153 states, 129 states have (on average 1.5891472868217054) internal successors, (205), 131 states have internal predecessors, (205), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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 01:07:58,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:07:58,563 INFO L93 Difference]: Finished difference Result 516 states and 818 transitions. [2022-01-10 01:07:58,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 01:07:58,566 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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 79 [2022-01-10 01:07:58,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:07:58,589 INFO L225 Difference]: With dead ends: 516 [2022-01-10 01:07:58,590 INFO L226 Difference]: Without dead ends: 366 [2022-01-10 01:07:58,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-01-10 01:07:58,601 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 500 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 01:07:58,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [509 Valid, 651 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 01:07:58,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-01-10 01:07:58,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 284. [2022-01-10 01:07:58,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 243 states have (on average 1.48559670781893) internal successors, (361), 245 states have internal predecessors, (361), 27 states have call successors, (27), 12 states have call predecessors, (27), 13 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2022-01-10 01:07:58,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 418 transitions. [2022-01-10 01:07:58,683 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 418 transitions. Word has length 79 [2022-01-10 01:07:58,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:07:58,684 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 418 transitions. [2022-01-10 01:07:58,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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 01:07:58,685 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 418 transitions. [2022-01-10 01:07:58,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 01:07:58,687 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:07:58,687 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] [2022-01-10 01:07:58,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 01:07:58,688 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:07:58,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:07:58,689 INFO L85 PathProgramCache]: Analyzing trace with hash -76002114, now seen corresponding path program 1 times [2022-01-10 01:07:58,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:07:58,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809570056] [2022-01-10 01:07:58,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:07:58,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:07:58,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:58,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:07:58,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:58,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 01:07:58,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:58,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-10 01:07:58,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:58,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-10 01:07:58,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:58,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:07:58,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:58,826 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 01:07:58,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:07:58,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809570056] [2022-01-10 01:07:58,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809570056] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:07:58,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:07:58,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:07:58,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330260689] [2022-01-10 01:07:58,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:07:58,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:07:58,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:07:58,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:07:58,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:07:58,829 INFO L87 Difference]: Start difference. First operand 284 states and 418 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 01:07:59,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:07:59,978 INFO L93 Difference]: Finished difference Result 871 states and 1299 transitions. [2022-01-10 01:07:59,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 01:07:59,985 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-01-10 01:07:59,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:07:59,989 INFO L225 Difference]: With dead ends: 871 [2022-01-10 01:07:59,989 INFO L226 Difference]: Without dead ends: 598 [2022-01-10 01:07:59,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-01-10 01:07:59,992 INFO L933 BasicCegarLoop]: 402 mSDtfsCounter, 525 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 1305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 01:07:59,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [534 Valid, 1111 Invalid, 1305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 01:07:59,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2022-01-10 01:08:00,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 413. [2022-01-10 01:08:00,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 354 states have (on average 1.4774011299435028) internal successors, (523), 357 states have internal predecessors, (523), 38 states have call successors, (38), 18 states have call predecessors, (38), 20 states have return successors, (43), 39 states have call predecessors, (43), 38 states have call successors, (43) [2022-01-10 01:08:00,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 604 transitions. [2022-01-10 01:08:00,050 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 604 transitions. Word has length 79 [2022-01-10 01:08:00,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:08:00,051 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 604 transitions. [2022-01-10 01:08:00,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 01:08:00,051 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 604 transitions. [2022-01-10 01:08:00,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 01:08:00,057 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:00,057 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] [2022-01-10 01:08:00,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 01:08:00,058 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:00,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:00,058 INFO L85 PathProgramCache]: Analyzing trace with hash -130395012, now seen corresponding path program 1 times [2022-01-10 01:08:00,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:00,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796013075] [2022-01-10 01:08:00,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:00,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:00,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:00,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:00,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:00,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 01:08:00,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:00,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-10 01:08:00,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:00,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-10 01:08:00,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:00,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:08:00,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:00,209 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 01:08:00,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:00,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796013075] [2022-01-10 01:08:00,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796013075] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:00,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:08:00,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:08:00,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705720513] [2022-01-10 01:08:00,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:00,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:08:00,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:00,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:08:00,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:08:00,211 INFO L87 Difference]: Start difference. First operand 413 states and 604 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 01:08:01,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:08:01,319 INFO L93 Difference]: Finished difference Result 1334 states and 1979 transitions. [2022-01-10 01:08:01,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 01:08:01,319 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-01-10 01:08:01,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:08:01,324 INFO L225 Difference]: With dead ends: 1334 [2022-01-10 01:08:01,324 INFO L226 Difference]: Without dead ends: 932 [2022-01-10 01:08:01,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-01-10 01:08:01,327 INFO L933 BasicCegarLoop]: 395 mSDtfsCounter, 521 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 1104 SdHoareTripleChecker+Invalid, 1286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 01:08:01,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [530 Valid, 1104 Invalid, 1286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 01:08:01,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2022-01-10 01:08:01,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 674. [2022-01-10 01:08:01,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 579 states have (on average 1.471502590673575) internal successors, (852), 584 states have internal predecessors, (852), 60 states have call successors, (60), 30 states have call predecessors, (60), 34 states have return successors, (73), 63 states have call predecessors, (73), 60 states have call successors, (73) [2022-01-10 01:08:01,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 985 transitions. [2022-01-10 01:08:01,360 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 985 transitions. Word has length 79 [2022-01-10 01:08:01,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:08:01,360 INFO L470 AbstractCegarLoop]: Abstraction has 674 states and 985 transitions. [2022-01-10 01:08:01,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 01:08:01,361 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 985 transitions. [2022-01-10 01:08:01,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 01:08:01,362 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:01,363 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] [2022-01-10 01:08:01,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 01:08:01,363 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:01,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:01,363 INFO L85 PathProgramCache]: Analyzing trace with hash -547791618, now seen corresponding path program 1 times [2022-01-10 01:08:01,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:01,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572208662] [2022-01-10 01:08:01,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:01,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:01,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:01,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:01,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:01,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 01:08:01,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:01,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-10 01:08:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:01,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-10 01:08:01,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:01,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:08:01,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:01,511 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 01:08:01,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:01,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572208662] [2022-01-10 01:08:01,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572208662] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:01,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:08:01,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:08:01,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680851135] [2022-01-10 01:08:01,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:01,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:08:01,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:01,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:08:01,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:08:01,514 INFO L87 Difference]: Start difference. First operand 674 states and 985 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 01:08:02,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:08:02,639 INFO L93 Difference]: Finished difference Result 2399 states and 3538 transitions. [2022-01-10 01:08:02,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 01:08:02,640 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-01-10 01:08:02,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:08:02,648 INFO L225 Difference]: With dead ends: 2399 [2022-01-10 01:08:02,648 INFO L226 Difference]: Without dead ends: 1736 [2022-01-10 01:08:02,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-01-10 01:08:02,652 INFO L933 BasicCegarLoop]: 388 mSDtfsCounter, 543 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 1250 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 1318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 01:08:02,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [551 Valid, 1089 Invalid, 1318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1250 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 01:08:02,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1736 states. [2022-01-10 01:08:02,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1736 to 1183. [2022-01-10 01:08:02,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 1020 states have (on average 1.4725490196078432) internal successors, (1502), 1029 states have internal predecessors, (1502), 100 states have call successors, (100), 54 states have call predecessors, (100), 62 states have return successors, (135), 107 states have call predecessors, (135), 100 states have call successors, (135) [2022-01-10 01:08:02,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1737 transitions. [2022-01-10 01:08:02,710 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1737 transitions. Word has length 79 [2022-01-10 01:08:02,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:08:02,710 INFO L470 AbstractCegarLoop]: Abstraction has 1183 states and 1737 transitions. [2022-01-10 01:08:02,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 01:08:02,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1737 transitions. [2022-01-10 01:08:02,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 01:08:02,712 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:02,713 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] [2022-01-10 01:08:02,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 01:08:02,713 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:02,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:02,714 INFO L85 PathProgramCache]: Analyzing trace with hash 131480636, now seen corresponding path program 1 times [2022-01-10 01:08:02,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:02,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149098944] [2022-01-10 01:08:02,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:02,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:02,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:02,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:02,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 01:08:02,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:02,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-10 01:08:02,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:02,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-10 01:08:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:02,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:08:02,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:02,806 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 01:08:02,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:02,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149098944] [2022-01-10 01:08:02,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149098944] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:02,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:08:02,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:08:02,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088185634] [2022-01-10 01:08:02,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:02,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:08:02,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:02,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:08:02,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:08:02,808 INFO L87 Difference]: Start difference. First operand 1183 states and 1737 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 01:08:03,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:08:03,945 INFO L93 Difference]: Finished difference Result 4210 states and 6212 transitions. [2022-01-10 01:08:03,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 01:08:03,945 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-01-10 01:08:03,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:08:03,961 INFO L225 Difference]: With dead ends: 4210 [2022-01-10 01:08:03,962 INFO L226 Difference]: Without dead ends: 3038 [2022-01-10 01:08:03,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-01-10 01:08:03,976 INFO L933 BasicCegarLoop]: 355 mSDtfsCounter, 576 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 1143 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 01:08:03,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [588 Valid, 1056 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1143 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 01:08:03,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3038 states. [2022-01-10 01:08:04,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3038 to 2200. [2022-01-10 01:08:04,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2200 states, 1905 states have (on average 1.4740157480314962) internal successors, (2808), 1922 states have internal predecessors, (2808), 176 states have call successors, (176), 102 states have call predecessors, (176), 118 states have return successors, (273), 191 states have call predecessors, (273), 176 states have call successors, (273) [2022-01-10 01:08:04,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 3257 transitions. [2022-01-10 01:08:04,091 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 3257 transitions. Word has length 79 [2022-01-10 01:08:04,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:08:04,092 INFO L470 AbstractCegarLoop]: Abstraction has 2200 states and 3257 transitions. [2022-01-10 01:08:04,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 01:08:04,092 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 3257 transitions. [2022-01-10 01:08:04,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 01:08:04,099 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:04,099 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] [2022-01-10 01:08:04,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 01:08:04,100 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:04,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:04,100 INFO L85 PathProgramCache]: Analyzing trace with hash 2093055294, now seen corresponding path program 1 times [2022-01-10 01:08:04,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:04,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862461467] [2022-01-10 01:08:04,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:04,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:04,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:04,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:04,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:04,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 01:08:04,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:04,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-10 01:08:04,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:04,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-10 01:08:04,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:04,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:08:04,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:04,211 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 01:08:04,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:04,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862461467] [2022-01-10 01:08:04,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862461467] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:04,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:08:04,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:08:04,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781018444] [2022-01-10 01:08:04,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:04,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:08:04,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:04,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:08:04,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:08:04,213 INFO L87 Difference]: Start difference. First operand 2200 states and 3257 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 01:08:04,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:08:04,676 INFO L93 Difference]: Finished difference Result 4935 states and 7382 transitions. [2022-01-10 01:08:04,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 01:08:04,676 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-01-10 01:08:04,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:08:04,689 INFO L225 Difference]: With dead ends: 4935 [2022-01-10 01:08:04,689 INFO L226 Difference]: Without dead ends: 2746 [2022-01-10 01:08:04,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-01-10 01:08:04,697 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 423 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 01:08:04,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [433 Valid, 465 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 01:08:04,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2022-01-10 01:08:04,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 2200. [2022-01-10 01:08:04,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2200 states, 1905 states have (on average 1.4650918635170604) internal successors, (2791), 1922 states have internal predecessors, (2791), 176 states have call successors, (176), 102 states have call predecessors, (176), 118 states have return successors, (273), 191 states have call predecessors, (273), 176 states have call successors, (273) [2022-01-10 01:08:04,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 3240 transitions. [2022-01-10 01:08:04,802 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 3240 transitions. Word has length 79 [2022-01-10 01:08:04,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:08:04,802 INFO L470 AbstractCegarLoop]: Abstraction has 2200 states and 3240 transitions. [2022-01-10 01:08:04,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 01:08:04,803 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 3240 transitions. [2022-01-10 01:08:04,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 01:08:04,806 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:04,806 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] [2022-01-10 01:08:04,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 01:08:04,806 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:04,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:04,807 INFO L85 PathProgramCache]: Analyzing trace with hash -2000088068, now seen corresponding path program 1 times [2022-01-10 01:08:04,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:04,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16518779] [2022-01-10 01:08:04,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:04,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:04,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:04,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:04,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:04,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 01:08:04,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:04,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-10 01:08:04,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:04,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-10 01:08:04,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:04,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:08:04,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:04,889 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 01:08:04,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:04,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16518779] [2022-01-10 01:08:04,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16518779] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:04,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:08:04,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:08:04,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312229926] [2022-01-10 01:08:04,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:04,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:08:04,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:04,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:08:04,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:08:04,891 INFO L87 Difference]: Start difference. First operand 2200 states and 3240 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 01:08:05,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:08:05,650 INFO L93 Difference]: Finished difference Result 4844 states and 7190 transitions. [2022-01-10 01:08:05,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 01:08:05,651 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-01-10 01:08:05,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:08:05,664 INFO L225 Difference]: With dead ends: 4844 [2022-01-10 01:08:05,664 INFO L226 Difference]: Without dead ends: 2656 [2022-01-10 01:08:05,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-01-10 01:08:05,672 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 350 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 01:08:05,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 715 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 01:08:05,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2656 states. [2022-01-10 01:08:05,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2656 to 2203. [2022-01-10 01:08:05,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2203 states, 1908 states have (on average 1.4559748427672956) internal successors, (2778), 1925 states have internal predecessors, (2778), 176 states have call successors, (176), 102 states have call predecessors, (176), 118 states have return successors, (273), 191 states have call predecessors, (273), 176 states have call successors, (273) [2022-01-10 01:08:05,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 3227 transitions. [2022-01-10 01:08:05,826 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 3227 transitions. Word has length 79 [2022-01-10 01:08:05,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:08:05,826 INFO L470 AbstractCegarLoop]: Abstraction has 2203 states and 3227 transitions. [2022-01-10 01:08:05,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 01:08:05,827 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 3227 transitions. [2022-01-10 01:08:05,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 01:08:05,830 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:05,830 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] [2022-01-10 01:08:05,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 01:08:05,830 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:05,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:05,831 INFO L85 PathProgramCache]: Analyzing trace with hash 266293118, now seen corresponding path program 1 times [2022-01-10 01:08:05,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:05,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077842501] [2022-01-10 01:08:05,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:05,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:05,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:05,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:05,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:05,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 01:08:05,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:05,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-10 01:08:05,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:05,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-10 01:08:05,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:05,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:08:05,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:05,921 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 01:08:05,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:05,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077842501] [2022-01-10 01:08:05,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077842501] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:05,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:08:05,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:08:05,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352663896] [2022-01-10 01:08:05,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:05,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:08:05,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:05,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:08:05,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:08:05,923 INFO L87 Difference]: Start difference. First operand 2203 states and 3227 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 01:08:06,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:08:06,764 INFO L93 Difference]: Finished difference Result 5438 states and 8009 transitions. [2022-01-10 01:08:06,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 01:08:06,765 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-01-10 01:08:06,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:08:06,780 INFO L225 Difference]: With dead ends: 5438 [2022-01-10 01:08:06,780 INFO L226 Difference]: Without dead ends: 3247 [2022-01-10 01:08:06,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2022-01-10 01:08:06,787 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 350 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 01:08:06,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 704 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 01:08:06,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3247 states. [2022-01-10 01:08:06,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3247 to 2254. [2022-01-10 01:08:06,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2254 states, 1959 states have (on average 1.444104134762634) internal successors, (2829), 1976 states have internal predecessors, (2829), 176 states have call successors, (176), 102 states have call predecessors, (176), 118 states have return successors, (273), 191 states have call predecessors, (273), 176 states have call successors, (273) [2022-01-10 01:08:06,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2254 states to 2254 states and 3278 transitions. [2022-01-10 01:08:06,928 INFO L78 Accepts]: Start accepts. Automaton has 2254 states and 3278 transitions. Word has length 79 [2022-01-10 01:08:06,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:08:06,930 INFO L470 AbstractCegarLoop]: Abstraction has 2254 states and 3278 transitions. [2022-01-10 01:08:06,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 01:08:06,930 INFO L276 IsEmpty]: Start isEmpty. Operand 2254 states and 3278 transitions. [2022-01-10 01:08:06,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 01:08:06,933 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:06,933 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] [2022-01-10 01:08:06,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 01:08:06,934 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:06,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:06,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1159779456, now seen corresponding path program 1 times [2022-01-10 01:08:06,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:06,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314126853] [2022-01-10 01:08:06,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:06,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:06,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:06,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:06,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:06,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 01:08:06,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:06,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-10 01:08:06,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:07,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-10 01:08:07,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:07,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:08:07,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:07,051 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 01:08:07,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:07,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314126853] [2022-01-10 01:08:07,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314126853] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:07,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:08:07,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:08:07,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418169594] [2022-01-10 01:08:07,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:07,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:08:07,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:07,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:08:07,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:08:07,053 INFO L87 Difference]: Start difference. First operand 2254 states and 3278 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 01:08:08,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:08:08,699 INFO L93 Difference]: Finished difference Result 10055 states and 14924 transitions. [2022-01-10 01:08:08,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 01:08:08,700 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-01-10 01:08:08,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:08:08,737 INFO L225 Difference]: With dead ends: 10055 [2022-01-10 01:08:08,737 INFO L226 Difference]: Without dead ends: 7813 [2022-01-10 01:08:08,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-01-10 01:08:08,749 INFO L933 BasicCegarLoop]: 399 mSDtfsCounter, 1389 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1414 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:08:08,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1414 Valid, 925 Invalid, 1273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 1020 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 01:08:08,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7813 states. [2022-01-10 01:08:09,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7813 to 6425. [2022-01-10 01:08:09,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6425 states, 5567 states have (on average 1.445841566373271) internal successors, (8049), 5634 states have internal predecessors, (8049), 501 states have call successors, (501), 308 states have call predecessors, (501), 356 states have return successors, (835), 498 states have call predecessors, (835), 501 states have call successors, (835) [2022-01-10 01:08:09,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6425 states to 6425 states and 9385 transitions. [2022-01-10 01:08:09,218 INFO L78 Accepts]: Start accepts. Automaton has 6425 states and 9385 transitions. Word has length 79 [2022-01-10 01:08:09,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:08:09,218 INFO L470 AbstractCegarLoop]: Abstraction has 6425 states and 9385 transitions. [2022-01-10 01:08:09,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 01:08:09,219 INFO L276 IsEmpty]: Start isEmpty. Operand 6425 states and 9385 transitions. [2022-01-10 01:08:09,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 01:08:09,222 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:09,222 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] [2022-01-10 01:08:09,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 01:08:09,223 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:09,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:09,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1236657535, now seen corresponding path program 1 times [2022-01-10 01:08:09,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:09,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246584290] [2022-01-10 01:08:09,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:09,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:09,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:09,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:09,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:09,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 01:08:09,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:09,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-10 01:08:09,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:09,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-10 01:08:09,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:09,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:08:09,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:09,328 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 01:08:09,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:09,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246584290] [2022-01-10 01:08:09,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246584290] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:09,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:08:09,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:08:09,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90248707] [2022-01-10 01:08:09,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:09,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:08:09,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:09,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:08:09,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:08:09,330 INFO L87 Difference]: Start difference. First operand 6425 states and 9385 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 01:08:10,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:08:10,528 INFO L93 Difference]: Finished difference Result 14892 states and 22145 transitions. [2022-01-10 01:08:10,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 01:08:10,529 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-01-10 01:08:10,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:08:10,584 INFO L225 Difference]: With dead ends: 14892 [2022-01-10 01:08:10,585 INFO L226 Difference]: Without dead ends: 8479 [2022-01-10 01:08:10,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2022-01-10 01:08:10,605 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 311 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 01:08:10,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 696 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 01:08:10,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8479 states. [2022-01-10 01:08:11,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8479 to 6503. [2022-01-10 01:08:11,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6503 states, 5645 states have (on average 1.4350752878653676) internal successors, (8101), 5712 states have internal predecessors, (8101), 501 states have call successors, (501), 308 states have call predecessors, (501), 356 states have return successors, (835), 498 states have call predecessors, (835), 501 states have call successors, (835) [2022-01-10 01:08:11,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6503 states to 6503 states and 9437 transitions. [2022-01-10 01:08:11,132 INFO L78 Accepts]: Start accepts. Automaton has 6503 states and 9437 transitions. Word has length 79 [2022-01-10 01:08:11,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:08:11,133 INFO L470 AbstractCegarLoop]: Abstraction has 6503 states and 9437 transitions. [2022-01-10 01:08:11,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 01:08:11,134 INFO L276 IsEmpty]: Start isEmpty. Operand 6503 states and 9437 transitions. [2022-01-10 01:08:11,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 01:08:11,136 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:11,136 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] [2022-01-10 01:08:11,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 01:08:11,137 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:11,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:11,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1212942595, now seen corresponding path program 1 times [2022-01-10 01:08:11,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:11,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614888442] [2022-01-10 01:08:11,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:11,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:11,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:11,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:11,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:11,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 01:08:11,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:11,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-10 01:08:11,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:11,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-10 01:08:11,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:11,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:08:11,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:11,225 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 01:08:11,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:11,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614888442] [2022-01-10 01:08:11,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614888442] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:11,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:08:11,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:08:11,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072211809] [2022-01-10 01:08:11,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:11,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:08:11,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:11,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:08:11,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:08:11,228 INFO L87 Difference]: Start difference. First operand 6503 states and 9437 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 01:08:13,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:08:13,247 INFO L93 Difference]: Finished difference Result 21917 states and 32003 transitions. [2022-01-10 01:08:13,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 01:08:13,247 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-01-10 01:08:13,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:08:13,301 INFO L225 Difference]: With dead ends: 21917 [2022-01-10 01:08:13,301 INFO L226 Difference]: Without dead ends: 15426 [2022-01-10 01:08:13,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-01-10 01:08:13,323 INFO L933 BasicCegarLoop]: 386 mSDtfsCounter, 1285 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1307 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 1254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 01:08:13,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1307 Valid, 900 Invalid, 1254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 1026 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 01:08:13,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15426 states. [2022-01-10 01:08:14,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15426 to 12725. [2022-01-10 01:08:14,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12725 states, 11005 states have (on average 1.4299863698318946) internal successors, (15737), 11156 states have internal predecessors, (15737), 1007 states have call successors, (1007), 616 states have call predecessors, (1007), 712 states have return successors, (1768), 968 states have call predecessors, (1768), 1007 states have call successors, (1768) [2022-01-10 01:08:14,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12725 states to 12725 states and 18512 transitions. [2022-01-10 01:08:14,421 INFO L78 Accepts]: Start accepts. Automaton has 12725 states and 18512 transitions. Word has length 79 [2022-01-10 01:08:14,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:08:14,421 INFO L470 AbstractCegarLoop]: Abstraction has 12725 states and 18512 transitions. [2022-01-10 01:08:14,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 01:08:14,421 INFO L276 IsEmpty]: Start isEmpty. Operand 12725 states and 18512 transitions. [2022-01-10 01:08:14,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-10 01:08:14,431 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:14,431 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:08:14,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 01:08:14,432 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:14,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:14,432 INFO L85 PathProgramCache]: Analyzing trace with hash -823536340, now seen corresponding path program 1 times [2022-01-10 01:08:14,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:14,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99993610] [2022-01-10 01:08:14,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:14,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:14,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:14,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:14,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:14,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 01:08:14,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:14,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-10 01:08:14,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:14,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-10 01:08:14,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:14,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:08:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:14,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-10 01:08:14,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:14,533 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-10 01:08:14,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:14,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99993610] [2022-01-10 01:08:14,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99993610] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:14,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:08:14,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:08:14,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414086167] [2022-01-10 01:08:14,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:14,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:08:14,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:14,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:08:14,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:08:14,536 INFO L87 Difference]: Start difference. First operand 12725 states and 18512 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 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 01:08:15,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:08:15,996 INFO L93 Difference]: Finished difference Result 28548 states and 42518 transitions. [2022-01-10 01:08:15,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 01:08:15,997 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 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 97 [2022-01-10 01:08:15,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:08:16,063 INFO L225 Difference]: With dead ends: 28548 [2022-01-10 01:08:16,064 INFO L226 Difference]: Without dead ends: 15835 [2022-01-10 01:08:16,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2022-01-10 01:08:16,101 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 218 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 01:08:16,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 689 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 01:08:16,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15835 states. [2022-01-10 01:08:17,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15835 to 12881. [2022-01-10 01:08:17,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12881 states, 11161 states have (on average 1.4193172654780037) internal successors, (15841), 11312 states have internal predecessors, (15841), 1007 states have call successors, (1007), 616 states have call predecessors, (1007), 712 states have return successors, (1768), 968 states have call predecessors, (1768), 1007 states have call successors, (1768) [2022-01-10 01:08:17,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12881 states to 12881 states and 18616 transitions. [2022-01-10 01:08:17,156 INFO L78 Accepts]: Start accepts. Automaton has 12881 states and 18616 transitions. Word has length 97 [2022-01-10 01:08:17,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:08:17,157 INFO L470 AbstractCegarLoop]: Abstraction has 12881 states and 18616 transitions. [2022-01-10 01:08:17,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 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 01:08:17,157 INFO L276 IsEmpty]: Start isEmpty. Operand 12881 states and 18616 transitions. [2022-01-10 01:08:17,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-10 01:08:17,167 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:17,167 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:08:17,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 01:08:17,167 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:17,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:17,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1442844846, now seen corresponding path program 1 times [2022-01-10 01:08:17,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:17,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127223713] [2022-01-10 01:08:17,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:17,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:17,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:17,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:17,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:17,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 01:08:17,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:17,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-10 01:08:17,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:17,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-10 01:08:17,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:17,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:08:17,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:17,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-10 01:08:17,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:17,253 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-10 01:08:17,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:17,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127223713] [2022-01-10 01:08:17,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127223713] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:17,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:08:17,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 01:08:17,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252468469] [2022-01-10 01:08:17,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:17,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 01:08:17,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:17,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 01:08:17,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:08:17,255 INFO L87 Difference]: Start difference. First operand 12881 states and 18616 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:20,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:08:20,289 INFO L93 Difference]: Finished difference Result 43294 states and 62971 transitions. [2022-01-10 01:08:20,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-10 01:08:20,290 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 97 [2022-01-10 01:08:20,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:08:20,409 INFO L225 Difference]: With dead ends: 43294 [2022-01-10 01:08:20,409 INFO L226 Difference]: Without dead ends: 30426 [2022-01-10 01:08:20,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2022-01-10 01:08:20,450 INFO L933 BasicCegarLoop]: 267 mSDtfsCounter, 704 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 01:08:20,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [715 Valid, 842 Invalid, 1149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1057 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 01:08:20,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30426 states. [2022-01-10 01:08:22,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30426 to 24791. [2022-01-10 01:08:22,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24791 states, 21405 states have (on average 1.4053258584442887) internal successors, (30081), 21788 states have internal predecessors, (30081), 1921 states have call successors, (1921), 1184 states have call predecessors, (1921), 1464 states have return successors, (3566), 1850 states have call predecessors, (3566), 1921 states have call successors, (3566) [2022-01-10 01:08:22,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24791 states to 24791 states and 35568 transitions. [2022-01-10 01:08:22,133 INFO L78 Accepts]: Start accepts. Automaton has 24791 states and 35568 transitions. Word has length 97 [2022-01-10 01:08:22,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:08:22,134 INFO L470 AbstractCegarLoop]: Abstraction has 24791 states and 35568 transitions. [2022-01-10 01:08:22,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:22,134 INFO L276 IsEmpty]: Start isEmpty. Operand 24791 states and 35568 transitions. [2022-01-10 01:08:22,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-10 01:08:22,152 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:22,152 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:08:22,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 01:08:22,153 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:22,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:22,153 INFO L85 PathProgramCache]: Analyzing trace with hash -923849748, now seen corresponding path program 1 times [2022-01-10 01:08:22,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:22,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074705217] [2022-01-10 01:08:22,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:22,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:22,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:22,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:22,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:22,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 01:08:22,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:22,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-10 01:08:22,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:22,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-10 01:08:22,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:22,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:08:22,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:22,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-10 01:08:22,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:22,244 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-10 01:08:22,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:22,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074705217] [2022-01-10 01:08:22,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074705217] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:22,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:08:22,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 01:08:22,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919902484] [2022-01-10 01:08:22,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:22,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 01:08:22,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:22,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 01:08:22,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:08:22,246 INFO L87 Difference]: Start difference. First operand 24791 states and 35568 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:24,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:08:24,369 INFO L93 Difference]: Finished difference Result 30360 states and 43543 transitions. [2022-01-10 01:08:24,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-10 01:08:24,370 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 97 [2022-01-10 01:08:24,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:08:24,431 INFO L225 Difference]: With dead ends: 30360 [2022-01-10 01:08:24,431 INFO L226 Difference]: Without dead ends: 17020 [2022-01-10 01:08:24,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2022-01-10 01:08:24,462 INFO L933 BasicCegarLoop]: 261 mSDtfsCounter, 711 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 1143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 01:08:24,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [722 Valid, 834 Invalid, 1143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1046 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 01:08:24,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17020 states. [2022-01-10 01:08:25,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17020 to 13265. [2022-01-10 01:08:25,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13265 states, 11442 states have (on average 1.3800034958923266) internal successors, (15790), 11633 states have internal predecessors, (15790), 1048 states have call successors, (1048), 640 states have call predecessors, (1048), 774 states have return successors, (1724), 1007 states have call predecessors, (1724), 1048 states have call successors, (1724) [2022-01-10 01:08:25,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13265 states to 13265 states and 18562 transitions. [2022-01-10 01:08:25,543 INFO L78 Accepts]: Start accepts. Automaton has 13265 states and 18562 transitions. Word has length 97 [2022-01-10 01:08:25,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:08:25,543 INFO L470 AbstractCegarLoop]: Abstraction has 13265 states and 18562 transitions. [2022-01-10 01:08:25,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:25,543 INFO L276 IsEmpty]: Start isEmpty. Operand 13265 states and 18562 transitions. [2022-01-10 01:08:25,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-10 01:08:25,552 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:25,552 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:08:25,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 01:08:25,553 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:25,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:25,553 INFO L85 PathProgramCache]: Analyzing trace with hash -30363410, now seen corresponding path program 1 times [2022-01-10 01:08:25,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:25,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445164315] [2022-01-10 01:08:25,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:25,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:25,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:25,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:25,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:25,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 01:08:25,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:25,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-10 01:08:25,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:25,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-10 01:08:25,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:25,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:08:25,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:25,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-10 01:08:25,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:25,636 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-10 01:08:25,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:25,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445164315] [2022-01-10 01:08:25,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445164315] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:25,637 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:08:25,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 01:08:25,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43812412] [2022-01-10 01:08:25,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:25,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 01:08:25,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:25,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 01:08:25,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:08:25,638 INFO L87 Difference]: Start difference. First operand 13265 states and 18562 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:27,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:08:27,269 INFO L93 Difference]: Finished difference Result 16782 states and 23535 transitions. [2022-01-10 01:08:27,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-10 01:08:27,269 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 97 [2022-01-10 01:08:27,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:08:27,305 INFO L225 Difference]: With dead ends: 16782 [2022-01-10 01:08:27,305 INFO L226 Difference]: Without dead ends: 9172 [2022-01-10 01:08:27,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2022-01-10 01:08:27,324 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 703 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 1162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 01:08:27,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [713 Valid, 832 Invalid, 1162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1067 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 01:08:27,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9172 states. [2022-01-10 01:08:27,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9172 to 7349. [2022-01-10 01:08:27,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7349 states, 6338 states have (on average 1.3628905017355633) internal successors, (8638), 6433 states have internal predecessors, (8638), 592 states have call successors, (592), 356 states have call predecessors, (592), 418 states have return successors, (890), 567 states have call predecessors, (890), 592 states have call successors, (890) [2022-01-10 01:08:27,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7349 states to 7349 states and 10120 transitions. [2022-01-10 01:08:27,948 INFO L78 Accepts]: Start accepts. Automaton has 7349 states and 10120 transitions. Word has length 97 [2022-01-10 01:08:27,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:08:27,948 INFO L470 AbstractCegarLoop]: Abstraction has 7349 states and 10120 transitions. [2022-01-10 01:08:27,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:27,948 INFO L276 IsEmpty]: Start isEmpty. Operand 7349 states and 10120 transitions. [2022-01-10 01:08:27,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-10 01:08:27,952 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:27,953 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:08:27,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 01:08:27,953 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:27,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:27,954 INFO L85 PathProgramCache]: Analyzing trace with hash -2079751252, now seen corresponding path program 1 times [2022-01-10 01:08:27,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:27,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120938621] [2022-01-10 01:08:27,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:27,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:27,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:27,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:27,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:27,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 01:08:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:28,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-10 01:08:28,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:28,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-10 01:08:28,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:28,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:08:28,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:28,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-10 01:08:28,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:28,045 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-10 01:08:28,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:28,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120938621] [2022-01-10 01:08:28,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120938621] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:28,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:08:28,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 01:08:28,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980766781] [2022-01-10 01:08:28,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:28,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 01:08:28,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:28,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 01:08:28,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:08:28,048 INFO L87 Difference]: Start difference. First operand 7349 states and 10120 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:29,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:08:29,706 INFO L93 Difference]: Finished difference Result 14511 states and 19925 transitions. [2022-01-10 01:08:29,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-10 01:08:29,707 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 97 [2022-01-10 01:08:29,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:08:29,733 INFO L225 Difference]: With dead ends: 14511 [2022-01-10 01:08:29,733 INFO L226 Difference]: Without dead ends: 8997 [2022-01-10 01:08:29,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2022-01-10 01:08:29,749 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 687 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 1266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 01:08:29,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [695 Valid, 864 Invalid, 1266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1165 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 01:08:29,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8997 states. [2022-01-10 01:08:30,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8997 to 5444. [2022-01-10 01:08:30,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5444 states, 4731 states have (on average 1.3472838723314309) internal successors, (6374), 4790 states have internal predecessors, (6374), 418 states have call successors, (418), 260 states have call predecessors, (418), 294 states have return successors, (552), 397 states have call predecessors, (552), 418 states have call successors, (552) [2022-01-10 01:08:30,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5444 states to 5444 states and 7344 transitions. [2022-01-10 01:08:30,224 INFO L78 Accepts]: Start accepts. Automaton has 5444 states and 7344 transitions. Word has length 97 [2022-01-10 01:08:30,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:08:30,224 INFO L470 AbstractCegarLoop]: Abstraction has 5444 states and 7344 transitions. [2022-01-10 01:08:30,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:30,224 INFO L276 IsEmpty]: Start isEmpty. Operand 5444 states and 7344 transitions. [2022-01-10 01:08:30,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-10 01:08:30,227 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:30,227 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:08:30,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 01:08:30,227 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:30,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:30,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1317822766, now seen corresponding path program 1 times [2022-01-10 01:08:30,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:30,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140009077] [2022-01-10 01:08:30,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:30,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:30,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:30,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:30,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:30,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 01:08:30,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:30,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-10 01:08:30,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:30,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-10 01:08:30,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:30,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:08:30,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:30,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-10 01:08:30,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:30,310 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-10 01:08:30,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:30,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140009077] [2022-01-10 01:08:30,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140009077] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:30,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:08:30,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 01:08:30,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507352743] [2022-01-10 01:08:30,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:30,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 01:08:30,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:30,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 01:08:30,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:08:30,312 INFO L87 Difference]: Start difference. First operand 5444 states and 7344 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:31,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:08:31,795 INFO L93 Difference]: Finished difference Result 11742 states and 15872 transitions. [2022-01-10 01:08:31,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-10 01:08:31,796 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 97 [2022-01-10 01:08:31,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:08:31,816 INFO L225 Difference]: With dead ends: 11742 [2022-01-10 01:08:31,816 INFO L226 Difference]: Without dead ends: 7441 [2022-01-10 01:08:31,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2022-01-10 01:08:31,829 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 909 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 01:08:31,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [917 Valid, 757 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 909 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 01:08:31,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7441 states. [2022-01-10 01:08:32,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7441 to 5365. [2022-01-10 01:08:32,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5365 states, 4666 states have (on average 1.342477496785255) internal successors, (6264), 4711 states have internal predecessors, (6264), 418 states have call successors, (418), 260 states have call predecessors, (418), 280 states have return successors, (522), 395 states have call predecessors, (522), 418 states have call successors, (522) [2022-01-10 01:08:32,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5365 states to 5365 states and 7204 transitions. [2022-01-10 01:08:32,293 INFO L78 Accepts]: Start accepts. Automaton has 5365 states and 7204 transitions. Word has length 97 [2022-01-10 01:08:32,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:08:32,294 INFO L470 AbstractCegarLoop]: Abstraction has 5365 states and 7204 transitions. [2022-01-10 01:08:32,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:32,294 INFO L276 IsEmpty]: Start isEmpty. Operand 5365 states and 7204 transitions. [2022-01-10 01:08:32,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-10 01:08:32,296 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:32,296 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:08:32,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 01:08:32,296 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:32,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:32,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1565969260, now seen corresponding path program 1 times [2022-01-10 01:08:32,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:32,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904016824] [2022-01-10 01:08:32,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:32,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:32,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:32,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:32,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:32,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 01:08:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:32,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-10 01:08:32,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:32,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-10 01:08:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:32,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:08:32,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:32,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-10 01:08:32,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:32,358 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-10 01:08:32,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:32,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904016824] [2022-01-10 01:08:32,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904016824] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:32,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:08:32,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:08:32,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233527994] [2022-01-10 01:08:32,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:32,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:08:32,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:32,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:08:32,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:08:32,359 INFO L87 Difference]: Start difference. First operand 5365 states and 7204 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:33,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:08:33,563 INFO L93 Difference]: Finished difference Result 13848 states and 18568 transitions. [2022-01-10 01:08:33,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 01:08:33,564 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 97 [2022-01-10 01:08:33,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:08:33,577 INFO L225 Difference]: With dead ends: 13848 [2022-01-10 01:08:33,577 INFO L226 Difference]: Without dead ends: 8498 [2022-01-10 01:08:33,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-01-10 01:08:33,586 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 676 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 01:08:33,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [686 Valid, 450 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 01:08:33,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8498 states. [2022-01-10 01:08:34,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8498 to 6336. [2022-01-10 01:08:34,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6336 states, 5571 states have (on average 1.3055106803087417) internal successors, (7273), 5622 states have internal predecessors, (7273), 434 states have call successors, (434), 298 states have call predecessors, (434), 330 states have return successors, (598), 417 states have call predecessors, (598), 434 states have call successors, (598) [2022-01-10 01:08:34,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6336 states to 6336 states and 8305 transitions. [2022-01-10 01:08:34,261 INFO L78 Accepts]: Start accepts. Automaton has 6336 states and 8305 transitions. Word has length 97 [2022-01-10 01:08:34,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:08:34,262 INFO L470 AbstractCegarLoop]: Abstraction has 6336 states and 8305 transitions. [2022-01-10 01:08:34,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:08:34,262 INFO L276 IsEmpty]: Start isEmpty. Operand 6336 states and 8305 transitions. [2022-01-10 01:08:34,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-10 01:08:34,263 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:34,263 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:08:34,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 01:08:34,263 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:34,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:34,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1989615982, now seen corresponding path program 1 times [2022-01-10 01:08:34,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:34,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559668103] [2022-01-10 01:08:34,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:34,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:34,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:34,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:34,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:34,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 01:08:34,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:34,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-10 01:08:34,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:34,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-10 01:08:34,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:34,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:08:34,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:34,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-01-10 01:08:34,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:34,327 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-10 01:08:34,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:34,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559668103] [2022-01-10 01:08:34,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559668103] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 01:08:34,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267422910] [2022-01-10 01:08:34,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:34,327 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:08:34,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:08:34,329 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 01:08:34,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 01:08:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:34,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 01:08:34,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 01:08:34,625 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:08:34,625 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 01:08:34,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267422910] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:34,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 01:08:34,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-01-10 01:08:34,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380107302] [2022-01-10 01:08:34,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:34,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:08:34,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:34,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:08:34,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:08:34,628 INFO L87 Difference]: Start difference. First operand 6336 states and 8305 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-01-10 01:08:35,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:08:35,497 INFO L93 Difference]: Finished difference Result 17959 states and 23682 transitions. [2022-01-10 01:08:35,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:08:35,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 97 [2022-01-10 01:08:35,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:08:35,522 INFO L225 Difference]: With dead ends: 17959 [2022-01-10 01:08:35,522 INFO L226 Difference]: Without dead ends: 11638 [2022-01-10 01:08:35,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:08:35,537 INFO L933 BasicCegarLoop]: 389 mSDtfsCounter, 174 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:08:35,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 594 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:08:35,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11638 states. [2022-01-10 01:08:36,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11638 to 11638. [2022-01-10 01:08:36,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11638 states, 10216 states have (on average 1.293265465935787) internal successors, (13212), 10309 states have internal predecessors, (13212), 806 states have call successors, (806), 554 states have call predecessors, (806), 615 states have return successors, (1185), 778 states have call predecessors, (1185), 806 states have call successors, (1185) [2022-01-10 01:08:36,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11638 states to 11638 states and 15203 transitions. [2022-01-10 01:08:36,547 INFO L78 Accepts]: Start accepts. Automaton has 11638 states and 15203 transitions. Word has length 97 [2022-01-10 01:08:36,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:08:36,547 INFO L470 AbstractCegarLoop]: Abstraction has 11638 states and 15203 transitions. [2022-01-10 01:08:36,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-01-10 01:08:36,548 INFO L276 IsEmpty]: Start isEmpty. Operand 11638 states and 15203 transitions. [2022-01-10 01:08:36,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-01-10 01:08:36,552 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:36,552 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:08:36,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 01:08:36,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:08:36,768 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:36,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:36,768 INFO L85 PathProgramCache]: Analyzing trace with hash -487614150, now seen corresponding path program 1 times [2022-01-10 01:08:36,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:36,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792897004] [2022-01-10 01:08:36,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:36,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:36,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:36,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:36,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 01:08:36,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:36,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-10 01:08:36,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:36,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-10 01:08:36,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:36,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:08:36,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:36,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-10 01:08:36,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:36,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 01:08:36,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:36,879 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-01-10 01:08:36,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:36,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792897004] [2022-01-10 01:08:36,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792897004] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:36,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:08:36,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:08:36,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379674612] [2022-01-10 01:08:36,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:36,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:08:36,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:36,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:08:36,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:08:36,881 INFO L87 Difference]: Start difference. First operand 11638 states and 15203 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 01:08:40,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:08:40,144 INFO L93 Difference]: Finished difference Result 40822 states and 53504 transitions. [2022-01-10 01:08:40,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 01:08:40,145 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 117 [2022-01-10 01:08:40,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:08:40,220 INFO L225 Difference]: With dead ends: 40822 [2022-01-10 01:08:40,220 INFO L226 Difference]: Without dead ends: 29205 [2022-01-10 01:08:40,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2022-01-10 01:08:40,240 INFO L933 BasicCegarLoop]: 261 mSDtfsCounter, 832 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 01:08:40,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [840 Valid, 627 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 01:08:40,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29205 states. [2022-01-10 01:08:42,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29205 to 25930. [2022-01-10 01:08:42,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25930 states, 22816 states have (on average 1.267093267882188) internal successors, (28910), 23200 states have internal predecessors, (28910), 1541 states have call successors, (1541), 1086 states have call predecessors, (1541), 1572 states have return successors, (3248), 1651 states have call predecessors, (3248), 1541 states have call successors, (3248) [2022-01-10 01:08:42,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25930 states to 25930 states and 33699 transitions. [2022-01-10 01:08:42,886 INFO L78 Accepts]: Start accepts. Automaton has 25930 states and 33699 transitions. Word has length 117 [2022-01-10 01:08:42,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:08:42,887 INFO L470 AbstractCegarLoop]: Abstraction has 25930 states and 33699 transitions. [2022-01-10 01:08:42,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 01:08:42,887 INFO L276 IsEmpty]: Start isEmpty. Operand 25930 states and 33699 transitions. [2022-01-10 01:08:42,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-01-10 01:08:42,896 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:42,896 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:08:42,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 01:08:42,896 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:42,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:42,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1526198724, now seen corresponding path program 1 times [2022-01-10 01:08:42,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:42,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134726305] [2022-01-10 01:08:42,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:42,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:42,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:42,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:42,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 01:08:42,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:42,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-10 01:08:42,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:42,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-10 01:08:42,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:42,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:08:42,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:42,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-10 01:08:42,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:42,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 01:08:42,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:42,956 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-01-10 01:08:42,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:42,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134726305] [2022-01-10 01:08:42,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134726305] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:42,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:08:42,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:08:42,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710187318] [2022-01-10 01:08:42,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:42,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:08:42,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:42,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:08:42,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:08:42,959 INFO L87 Difference]: Start difference. First operand 25930 states and 33699 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 01:08:46,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:08:46,651 INFO L93 Difference]: Finished difference Result 57023 states and 74012 transitions. [2022-01-10 01:08:46,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 01:08:46,652 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 117 [2022-01-10 01:08:46,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:08:46,734 INFO L225 Difference]: With dead ends: 57023 [2022-01-10 01:08:46,734 INFO L226 Difference]: Without dead ends: 31110 [2022-01-10 01:08:46,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:08:46,780 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 423 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 01:08:46,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [446 Valid, 328 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 01:08:46,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31110 states. [2022-01-10 01:08:49,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31110 to 25916. [2022-01-10 01:08:49,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25916 states, 22812 states have (on average 1.267008591969139) internal successors, (28903), 23194 states have internal predecessors, (28903), 1531 states have call successors, (1531), 1086 states have call predecessors, (1531), 1572 states have return successors, (3232), 1639 states have call predecessors, (3232), 1531 states have call successors, (3232) [2022-01-10 01:08:49,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25916 states to 25916 states and 33666 transitions. [2022-01-10 01:08:49,937 INFO L78 Accepts]: Start accepts. Automaton has 25916 states and 33666 transitions. Word has length 117 [2022-01-10 01:08:49,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:08:49,937 INFO L470 AbstractCegarLoop]: Abstraction has 25916 states and 33666 transitions. [2022-01-10 01:08:49,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 01:08:49,937 INFO L276 IsEmpty]: Start isEmpty. Operand 25916 states and 33666 transitions. [2022-01-10 01:08:49,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-01-10 01:08:49,944 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:08:49,944 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:08:49,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 01:08:49,944 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:08:49,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:08:49,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1564913749, now seen corresponding path program 1 times [2022-01-10 01:08:49,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:08:49,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446323772] [2022-01-10 01:08:49,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:08:49,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:08:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:49,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:08:49,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:49,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 01:08:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:49,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-01-10 01:08:50,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:50,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-01-10 01:08:50,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:50,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-01-10 01:08:50,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:50,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-01-10 01:08:50,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:50,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-10 01:08:50,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:08:50,049 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-01-10 01:08:50,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:08:50,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446323772] [2022-01-10 01:08:50,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446323772] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:08:50,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:08:50,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:08:50,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735954907] [2022-01-10 01:08:50,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:08:50,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:08:50,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:08:50,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:08:50,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:08:50,051 INFO L87 Difference]: Start difference. First operand 25916 states and 33666 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7)