/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/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/systemc/token_ring.13.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 00:18:30,287 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 00:18:30,289 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 00:18:30,333 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-11 00:18:30,353 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 00:18:30,357 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 00:18:30,358 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 00:18:30,360 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 00:18:30,361 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 00:18:30,361 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 00:18:30,366 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 00:18:30,368 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 00:18:30,369 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 00:18:30,372 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 00:18:30,373 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 00:18:30,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 00:18:30,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-11 00:18:30,379 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 00:18:30,380 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 00:18:30,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 00:18:30,381 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-11 00:18:30,397 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 00:18:30,398 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 00:18:30,398 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 00:18:30,398 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 00:18:30,399 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 00:18:30,399 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 00:18:30,400 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 00:18:30,400 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 00:18:30,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 00:18:30,400 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 00:18:30,400 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 00:18:30,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 00:18:30,401 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 00:18:30,401 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 00:18:30,401 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 00:18:30,401 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 00:18:30,401 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 00:18:30,401 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 00:18:30,401 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 00:18:30,401 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 00:18:30,402 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 00:18:30,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:18:30,403 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 00:18:30,403 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 00:18:30,403 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 00:18:30,403 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 00:18:30,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 00:18:30,403 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 00:18:30,403 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 00:18:30,403 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 00:18:30,403 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 00:18:30,404 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 00:18:30,404 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 00:18:30,404 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 00:18:30,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 00:18:30,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 00:18:30,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 00:18:30,613 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 00:18:30,613 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 00:18:30,614 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.13.cil-1.c [2022-01-11 00:18:30,655 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c75fedab4/23b2a0a86bf64eb7ac5f28d206df6c44/FLAG254801220 [2022-01-11 00:18:31,079 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 00:18:31,080 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.13.cil-1.c [2022-01-11 00:18:31,096 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c75fedab4/23b2a0a86bf64eb7ac5f28d206df6c44/FLAG254801220 [2022-01-11 00:18:31,106 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c75fedab4/23b2a0a86bf64eb7ac5f28d206df6c44 [2022-01-11 00:18:31,108 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 00:18:31,109 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 00:18:31,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 00:18:31,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 00:18:31,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 00:18:31,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:18:31" (1/1) ... [2022-01-11 00:18:31,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e064cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:18:31, skipping insertion in model container [2022-01-11 00:18:31,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:18:31" (1/1) ... [2022-01-11 00:18:31,121 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 00:18:31,167 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 00:18:31,333 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/token_ring.13.cil-1.c[671,684] [2022-01-11 00:18:31,439 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:18:31,461 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 00:18:31,468 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/token_ring.13.cil-1.c[671,684] [2022-01-11 00:18:31,527 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:18:31,545 INFO L208 MainTranslator]: Completed translation [2022-01-11 00:18:31,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:18:31 WrapperNode [2022-01-11 00:18:31,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 00:18:31,547 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 00:18:31,547 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 00:18:31,547 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 00:18:31,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:18:31" (1/1) ... [2022-01-11 00:18:31,563 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:18:31" (1/1) ... [2022-01-11 00:18:31,634 INFO L137 Inliner]: procedures = 54, calls = 71, calls flagged for inlining = 66, calls inlined = 303, statements flattened = 4665 [2022-01-11 00:18:31,635 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 00:18:31,635 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 00:18:31,635 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 00:18:31,635 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 00:18:31,641 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:18:31" (1/1) ... [2022-01-11 00:18:31,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:18:31" (1/1) ... [2022-01-11 00:18:31,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:18:31" (1/1) ... [2022-01-11 00:18:31,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:18:31" (1/1) ... [2022-01-11 00:18:31,721 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:18:31" (1/1) ... [2022-01-11 00:18:31,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:18:31" (1/1) ... [2022-01-11 00:18:31,757 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:18:31" (1/1) ... [2022-01-11 00:18:31,768 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 00:18:31,769 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 00:18:31,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 00:18:31,770 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 00:18:31,770 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:18:31" (1/1) ... [2022-01-11 00:18:31,775 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:18:31,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:18:31,793 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) [2022-01-11 00:18:31,810 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 [2022-01-11 00:18:31,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 00:18:31,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 00:18:31,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 00:18:31,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 00:18:31,940 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 00:18:31,941 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 00:18:33,814 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 00:18:33,828 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 00:18:33,828 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2022-01-11 00:18:33,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:18:33 BoogieIcfgContainer [2022-01-11 00:18:33,831 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 00:18:33,832 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 00:18:33,832 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 00:18:33,833 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 00:18:33,835 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:18:33" (1/1) ... [2022-01-11 00:18:34,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:18:34 BasicIcfg [2022-01-11 00:18:34,139 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 00:18:34,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 00:18:34,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 00:18:34,143 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 00:18:34,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 12:18:31" (1/4) ... [2022-01-11 00:18:34,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f6a4a0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:18:34, skipping insertion in model container [2022-01-11 00:18:34,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:18:31" (2/4) ... [2022-01-11 00:18:34,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f6a4a0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:18:34, skipping insertion in model container [2022-01-11 00:18:34,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:18:33" (3/4) ... [2022-01-11 00:18:34,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f6a4a0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 12:18:34, skipping insertion in model container [2022-01-11 00:18:34,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:18:34" (4/4) ... [2022-01-11 00:18:34,145 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.13.cil-1.cTransformedIcfg [2022-01-11 00:18:34,148 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 00:18:34,148 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-11 00:18:34,184 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 00:18:34,189 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 [2022-01-11 00:18:34,189 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-11 00:18:34,226 INFO L276 IsEmpty]: Start isEmpty. Operand has 2033 states, 2030 states have (on average 1.4975369458128078) internal successors, (3040), 2032 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:34,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 00:18:34,235 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:34,235 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:34,236 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:34,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:34,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1213702247, now seen corresponding path program 1 times [2022-01-11 00:18:34,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:34,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484145591] [2022-01-11 00:18:34,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:34,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:34,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:34,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:34,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:34,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484145591] [2022-01-11 00:18:34,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484145591] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:34,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:34,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:34,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791491127] [2022-01-11 00:18:34,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:34,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:34,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:34,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:34,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:34,566 INFO L87 Difference]: Start difference. First operand has 2033 states, 2030 states have (on average 1.4975369458128078) internal successors, (3040), 2032 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:34,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:34,759 INFO L93 Difference]: Finished difference Result 5800 states and 8651 transitions. [2022-01-11 00:18:34,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:34,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2022-01-11 00:18:34,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:34,784 INFO L225 Difference]: With dead ends: 5800 [2022-01-11 00:18:34,784 INFO L226 Difference]: Without dead ends: 3779 [2022-01-11 00:18:34,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:34,794 INFO L933 BasicCegarLoop]: 2998 mSDtfsCounter, 2837 mSDsluCounter, 2710 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2837 SdHoareTripleChecker+Valid, 5708 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:34,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2837 Valid, 5708 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:34,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3779 states. [2022-01-11 00:18:34,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3779 to 3775. [2022-01-11 00:18:34,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3775 states, 3773 states have (on average 1.4746885767293931) internal successors, (5564), 3774 states have internal predecessors, (5564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:34,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3775 states to 3775 states and 5564 transitions. [2022-01-11 00:18:34,979 INFO L78 Accepts]: Start accepts. Automaton has 3775 states and 5564 transitions. Word has length 175 [2022-01-11 00:18:34,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:34,979 INFO L470 AbstractCegarLoop]: Abstraction has 3775 states and 5564 transitions. [2022-01-11 00:18:34,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:34,981 INFO L276 IsEmpty]: Start isEmpty. Operand 3775 states and 5564 transitions. [2022-01-11 00:18:34,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 00:18:34,987 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:34,987 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:34,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 00:18:34,988 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:34,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:34,989 INFO L85 PathProgramCache]: Analyzing trace with hash 975562169, now seen corresponding path program 1 times [2022-01-11 00:18:34,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:34,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591954705] [2022-01-11 00:18:34,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:34,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:35,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:35,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:35,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:35,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591954705] [2022-01-11 00:18:35,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591954705] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:35,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:35,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:35,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101535125] [2022-01-11 00:18:35,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:35,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:35,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:35,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:35,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:35,113 INFO L87 Difference]: Start difference. First operand 3775 states and 5564 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:35,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:35,203 INFO L93 Difference]: Finished difference Result 7529 states and 11092 transitions. [2022-01-11 00:18:35,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:35,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2022-01-11 00:18:35,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:35,215 INFO L225 Difference]: With dead ends: 7529 [2022-01-11 00:18:35,215 INFO L226 Difference]: Without dead ends: 3775 [2022-01-11 00:18:35,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:35,227 INFO L933 BasicCegarLoop]: 2988 mSDtfsCounter, 2973 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2973 SdHoareTripleChecker+Valid, 2988 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:35,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2973 Valid, 2988 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:35,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3775 states. [2022-01-11 00:18:35,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3775 to 3775. [2022-01-11 00:18:35,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3775 states, 3773 states have (on average 1.472568248078452) internal successors, (5556), 3774 states have internal predecessors, (5556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:35,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3775 states to 3775 states and 5556 transitions. [2022-01-11 00:18:35,408 INFO L78 Accepts]: Start accepts. Automaton has 3775 states and 5556 transitions. Word has length 175 [2022-01-11 00:18:35,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:35,409 INFO L470 AbstractCegarLoop]: Abstraction has 3775 states and 5556 transitions. [2022-01-11 00:18:35,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:35,410 INFO L276 IsEmpty]: Start isEmpty. Operand 3775 states and 5556 transitions. [2022-01-11 00:18:35,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 00:18:35,411 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:35,412 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:35,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 00:18:35,415 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:35,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:35,415 INFO L85 PathProgramCache]: Analyzing trace with hash 214899609, now seen corresponding path program 1 times [2022-01-11 00:18:35,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:35,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557721308] [2022-01-11 00:18:35,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:35,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:35,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:35,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:35,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:35,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557721308] [2022-01-11 00:18:35,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557721308] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:35,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:35,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:35,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589547612] [2022-01-11 00:18:35,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:35,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:35,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:35,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:35,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:35,495 INFO L87 Difference]: Start difference. First operand 3775 states and 5556 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:35,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:35,633 INFO L93 Difference]: Finished difference Result 7527 states and 11073 transitions. [2022-01-11 00:18:35,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:35,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2022-01-11 00:18:35,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:35,643 INFO L225 Difference]: With dead ends: 7527 [2022-01-11 00:18:35,643 INFO L226 Difference]: Without dead ends: 3775 [2022-01-11 00:18:35,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:35,652 INFO L933 BasicCegarLoop]: 2983 mSDtfsCounter, 2966 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2966 SdHoareTripleChecker+Valid, 2983 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:35,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2966 Valid, 2983 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:35,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3775 states. [2022-01-11 00:18:35,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3775 to 3775. [2022-01-11 00:18:35,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3775 states, 3773 states have (on average 1.4704479194275113) internal successors, (5548), 3774 states have internal predecessors, (5548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:35,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3775 states to 3775 states and 5548 transitions. [2022-01-11 00:18:35,752 INFO L78 Accepts]: Start accepts. Automaton has 3775 states and 5548 transitions. Word has length 175 [2022-01-11 00:18:35,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:35,753 INFO L470 AbstractCegarLoop]: Abstraction has 3775 states and 5548 transitions. [2022-01-11 00:18:35,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:35,753 INFO L276 IsEmpty]: Start isEmpty. Operand 3775 states and 5548 transitions. [2022-01-11 00:18:35,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 00:18:35,754 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:35,754 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:35,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 00:18:35,755 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:35,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:35,755 INFO L85 PathProgramCache]: Analyzing trace with hash 973883769, now seen corresponding path program 1 times [2022-01-11 00:18:35,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:35,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829495169] [2022-01-11 00:18:35,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:35,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:35,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:35,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:35,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:35,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829495169] [2022-01-11 00:18:35,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829495169] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:35,811 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:35,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:35,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506139428] [2022-01-11 00:18:35,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:35,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:35,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:35,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:35,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:35,812 INFO L87 Difference]: Start difference. First operand 3775 states and 5548 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:35,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:35,941 INFO L93 Difference]: Finished difference Result 7526 states and 11056 transitions. [2022-01-11 00:18:35,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:35,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2022-01-11 00:18:35,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:35,955 INFO L225 Difference]: With dead ends: 7526 [2022-01-11 00:18:35,955 INFO L226 Difference]: Without dead ends: 3775 [2022-01-11 00:18:35,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:35,967 INFO L933 BasicCegarLoop]: 2978 mSDtfsCounter, 2960 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2960 SdHoareTripleChecker+Valid, 2978 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:35,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2960 Valid, 2978 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:35,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3775 states. [2022-01-11 00:18:36,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3775 to 3775. [2022-01-11 00:18:36,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3775 states, 3773 states have (on average 1.4683275907765703) internal successors, (5540), 3774 states have internal predecessors, (5540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:36,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3775 states to 3775 states and 5540 transitions. [2022-01-11 00:18:36,088 INFO L78 Accepts]: Start accepts. Automaton has 3775 states and 5540 transitions. Word has length 175 [2022-01-11 00:18:36,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:36,088 INFO L470 AbstractCegarLoop]: Abstraction has 3775 states and 5540 transitions. [2022-01-11 00:18:36,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:36,089 INFO L276 IsEmpty]: Start isEmpty. Operand 3775 states and 5540 transitions. [2022-01-11 00:18:36,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 00:18:36,090 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:36,090 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:36,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 00:18:36,090 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:36,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:36,090 INFO L85 PathProgramCache]: Analyzing trace with hash 998367129, now seen corresponding path program 1 times [2022-01-11 00:18:36,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:36,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314245060] [2022-01-11 00:18:36,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:36,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:36,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:36,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:36,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:36,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314245060] [2022-01-11 00:18:36,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314245060] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:36,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:36,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:36,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46012061] [2022-01-11 00:18:36,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:36,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:36,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:36,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:36,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:36,164 INFO L87 Difference]: Start difference. First operand 3775 states and 5540 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:36,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:36,289 INFO L93 Difference]: Finished difference Result 7525 states and 11039 transitions. [2022-01-11 00:18:36,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:36,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2022-01-11 00:18:36,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:36,300 INFO L225 Difference]: With dead ends: 7525 [2022-01-11 00:18:36,300 INFO L226 Difference]: Without dead ends: 3775 [2022-01-11 00:18:36,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:36,306 INFO L933 BasicCegarLoop]: 2973 mSDtfsCounter, 2954 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2954 SdHoareTripleChecker+Valid, 2973 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:36,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2954 Valid, 2973 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:36,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3775 states. [2022-01-11 00:18:36,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3775 to 3775. [2022-01-11 00:18:36,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3775 states, 3773 states have (on average 1.4662072621256295) internal successors, (5532), 3774 states have internal predecessors, (5532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:36,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3775 states to 3775 states and 5532 transitions. [2022-01-11 00:18:36,451 INFO L78 Accepts]: Start accepts. Automaton has 3775 states and 5532 transitions. Word has length 175 [2022-01-11 00:18:36,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:36,453 INFO L470 AbstractCegarLoop]: Abstraction has 3775 states and 5532 transitions. [2022-01-11 00:18:36,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:36,456 INFO L276 IsEmpty]: Start isEmpty. Operand 3775 states and 5532 transitions. [2022-01-11 00:18:36,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 00:18:36,460 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:36,461 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:36,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 00:18:36,461 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:36,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:36,461 INFO L85 PathProgramCache]: Analyzing trace with hash -940505735, now seen corresponding path program 1 times [2022-01-11 00:18:36,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:36,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079498950] [2022-01-11 00:18:36,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:36,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:36,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:36,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:36,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:36,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079498950] [2022-01-11 00:18:36,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079498950] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:36,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:36,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:36,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688446431] [2022-01-11 00:18:36,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:36,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:36,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:36,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:36,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:36,531 INFO L87 Difference]: Start difference. First operand 3775 states and 5532 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:36,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:36,668 INFO L93 Difference]: Finished difference Result 7524 states and 11022 transitions. [2022-01-11 00:18:36,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:36,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2022-01-11 00:18:36,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:36,679 INFO L225 Difference]: With dead ends: 7524 [2022-01-11 00:18:36,679 INFO L226 Difference]: Without dead ends: 3775 [2022-01-11 00:18:36,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:36,686 INFO L933 BasicCegarLoop]: 2968 mSDtfsCounter, 2948 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2948 SdHoareTripleChecker+Valid, 2968 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:36,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2948 Valid, 2968 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:36,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3775 states. [2022-01-11 00:18:36,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3775 to 3775. [2022-01-11 00:18:36,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3775 states, 3773 states have (on average 1.4640869334746887) internal successors, (5524), 3774 states have internal predecessors, (5524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:36,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3775 states to 3775 states and 5524 transitions. [2022-01-11 00:18:36,843 INFO L78 Accepts]: Start accepts. Automaton has 3775 states and 5524 transitions. Word has length 175 [2022-01-11 00:18:36,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:36,844 INFO L470 AbstractCegarLoop]: Abstraction has 3775 states and 5524 transitions. [2022-01-11 00:18:36,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:36,845 INFO L276 IsEmpty]: Start isEmpty. Operand 3775 states and 5524 transitions. [2022-01-11 00:18:36,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 00:18:36,846 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:36,846 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:36,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 00:18:36,846 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:36,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:36,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1075159961, now seen corresponding path program 1 times [2022-01-11 00:18:36,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:36,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413811829] [2022-01-11 00:18:36,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:36,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:36,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:36,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:36,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:36,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413811829] [2022-01-11 00:18:36,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413811829] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:36,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:36,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:36,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640932797] [2022-01-11 00:18:36,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:36,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:36,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:36,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:36,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:36,901 INFO L87 Difference]: Start difference. First operand 3775 states and 5524 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:37,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:37,054 INFO L93 Difference]: Finished difference Result 7523 states and 11005 transitions. [2022-01-11 00:18:37,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:37,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2022-01-11 00:18:37,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:37,077 INFO L225 Difference]: With dead ends: 7523 [2022-01-11 00:18:37,077 INFO L226 Difference]: Without dead ends: 3775 [2022-01-11 00:18:37,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:37,086 INFO L933 BasicCegarLoop]: 2963 mSDtfsCounter, 2942 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2942 SdHoareTripleChecker+Valid, 2963 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:37,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2942 Valid, 2963 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:37,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3775 states. [2022-01-11 00:18:37,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3775 to 3775. [2022-01-11 00:18:37,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3775 states, 3773 states have (on average 1.4619666048237476) internal successors, (5516), 3774 states have internal predecessors, (5516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:37,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3775 states to 3775 states and 5516 transitions. [2022-01-11 00:18:37,239 INFO L78 Accepts]: Start accepts. Automaton has 3775 states and 5516 transitions. Word has length 175 [2022-01-11 00:18:37,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:37,239 INFO L470 AbstractCegarLoop]: Abstraction has 3775 states and 5516 transitions. [2022-01-11 00:18:37,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:37,240 INFO L276 IsEmpty]: Start isEmpty. Operand 3775 states and 5516 transitions. [2022-01-11 00:18:37,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 00:18:37,240 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:37,241 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:37,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 00:18:37,241 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:37,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:37,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1076575879, now seen corresponding path program 1 times [2022-01-11 00:18:37,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:37,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022721818] [2022-01-11 00:18:37,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:37,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:37,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:37,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:37,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022721818] [2022-01-11 00:18:37,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022721818] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:37,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:37,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:37,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213043366] [2022-01-11 00:18:37,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:37,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:37,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:37,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:37,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:37,285 INFO L87 Difference]: Start difference. First operand 3775 states and 5516 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:37,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:37,413 INFO L93 Difference]: Finished difference Result 7522 states and 10988 transitions. [2022-01-11 00:18:37,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:37,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2022-01-11 00:18:37,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:37,421 INFO L225 Difference]: With dead ends: 7522 [2022-01-11 00:18:37,421 INFO L226 Difference]: Without dead ends: 3775 [2022-01-11 00:18:37,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:37,428 INFO L933 BasicCegarLoop]: 2958 mSDtfsCounter, 2936 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2936 SdHoareTripleChecker+Valid, 2958 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:37,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2936 Valid, 2958 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:37,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3775 states. [2022-01-11 00:18:37,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3775 to 3775. [2022-01-11 00:18:37,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3775 states, 3773 states have (on average 1.4598462761728068) internal successors, (5508), 3774 states have internal predecessors, (5508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:37,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3775 states to 3775 states and 5508 transitions. [2022-01-11 00:18:37,555 INFO L78 Accepts]: Start accepts. Automaton has 3775 states and 5508 transitions. Word has length 175 [2022-01-11 00:18:37,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:37,556 INFO L470 AbstractCegarLoop]: Abstraction has 3775 states and 5508 transitions. [2022-01-11 00:18:37,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:37,556 INFO L276 IsEmpty]: Start isEmpty. Operand 3775 states and 5508 transitions. [2022-01-11 00:18:37,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 00:18:37,557 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:37,557 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:37,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 00:18:37,557 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:37,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:37,558 INFO L85 PathProgramCache]: Analyzing trace with hash 516581273, now seen corresponding path program 1 times [2022-01-11 00:18:37,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:37,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420222742] [2022-01-11 00:18:37,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:37,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:37,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:37,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:37,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:37,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420222742] [2022-01-11 00:18:37,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420222742] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:37,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:37,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:37,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214141986] [2022-01-11 00:18:37,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:37,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:37,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:37,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:37,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:37,601 INFO L87 Difference]: Start difference. First operand 3775 states and 5508 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:37,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:37,755 INFO L93 Difference]: Finished difference Result 7521 states and 10971 transitions. [2022-01-11 00:18:37,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:37,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2022-01-11 00:18:37,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:37,762 INFO L225 Difference]: With dead ends: 7521 [2022-01-11 00:18:37,762 INFO L226 Difference]: Without dead ends: 3775 [2022-01-11 00:18:37,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:37,767 INFO L933 BasicCegarLoop]: 2953 mSDtfsCounter, 2930 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2930 SdHoareTripleChecker+Valid, 2953 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:37,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2930 Valid, 2953 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:37,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3775 states. [2022-01-11 00:18:37,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3775 to 3775. [2022-01-11 00:18:37,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3775 states, 3773 states have (on average 1.4577259475218658) internal successors, (5500), 3774 states have internal predecessors, (5500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:37,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3775 states to 3775 states and 5500 transitions. [2022-01-11 00:18:37,884 INFO L78 Accepts]: Start accepts. Automaton has 3775 states and 5500 transitions. Word has length 175 [2022-01-11 00:18:37,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:37,884 INFO L470 AbstractCegarLoop]: Abstraction has 3775 states and 5500 transitions. [2022-01-11 00:18:37,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:37,885 INFO L276 IsEmpty]: Start isEmpty. Operand 3775 states and 5500 transitions. [2022-01-11 00:18:37,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 00:18:37,888 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:37,888 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:37,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 00:18:37,888 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:37,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:37,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1787331207, now seen corresponding path program 1 times [2022-01-11 00:18:37,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:37,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832325490] [2022-01-11 00:18:37,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:37,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:37,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:37,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:37,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:37,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832325490] [2022-01-11 00:18:37,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832325490] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:37,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:37,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:37,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335863711] [2022-01-11 00:18:37,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:37,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:37,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:37,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:37,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:37,934 INFO L87 Difference]: Start difference. First operand 3775 states and 5500 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:38,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:38,065 INFO L93 Difference]: Finished difference Result 7519 states and 10952 transitions. [2022-01-11 00:18:38,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:38,065 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2022-01-11 00:18:38,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:38,073 INFO L225 Difference]: With dead ends: 7519 [2022-01-11 00:18:38,073 INFO L226 Difference]: Without dead ends: 3775 [2022-01-11 00:18:38,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:38,080 INFO L933 BasicCegarLoop]: 2948 mSDtfsCounter, 2923 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2923 SdHoareTripleChecker+Valid, 2948 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:38,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2923 Valid, 2948 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:38,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3775 states. [2022-01-11 00:18:38,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3775 to 3775. [2022-01-11 00:18:38,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3775 states, 3773 states have (on average 1.455605618870925) internal successors, (5492), 3774 states have internal predecessors, (5492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:38,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3775 states to 3775 states and 5492 transitions. [2022-01-11 00:18:38,217 INFO L78 Accepts]: Start accepts. Automaton has 3775 states and 5492 transitions. Word has length 175 [2022-01-11 00:18:38,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:38,217 INFO L470 AbstractCegarLoop]: Abstraction has 3775 states and 5492 transitions. [2022-01-11 00:18:38,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:38,217 INFO L276 IsEmpty]: Start isEmpty. Operand 3775 states and 5492 transitions. [2022-01-11 00:18:38,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 00:18:38,218 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:38,218 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:38,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 00:18:38,219 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:38,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:38,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1446021977, now seen corresponding path program 1 times [2022-01-11 00:18:38,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:38,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169364972] [2022-01-11 00:18:38,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:38,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:38,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:38,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:38,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:38,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169364972] [2022-01-11 00:18:38,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169364972] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:38,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:38,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:38,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626621006] [2022-01-11 00:18:38,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:38,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:38,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:38,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:38,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:38,274 INFO L87 Difference]: Start difference. First operand 3775 states and 5492 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:38,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:38,404 INFO L93 Difference]: Finished difference Result 7518 states and 10935 transitions. [2022-01-11 00:18:38,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:38,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2022-01-11 00:18:38,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:38,411 INFO L225 Difference]: With dead ends: 7518 [2022-01-11 00:18:38,411 INFO L226 Difference]: Without dead ends: 3775 [2022-01-11 00:18:38,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:38,417 INFO L933 BasicCegarLoop]: 2943 mSDtfsCounter, 2917 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2917 SdHoareTripleChecker+Valid, 2943 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:38,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2917 Valid, 2943 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:38,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3775 states. [2022-01-11 00:18:38,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3775 to 3775. [2022-01-11 00:18:38,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3775 states, 3773 states have (on average 1.4534852902199842) internal successors, (5484), 3774 states have internal predecessors, (5484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:38,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3775 states to 3775 states and 5484 transitions. [2022-01-11 00:18:38,540 INFO L78 Accepts]: Start accepts. Automaton has 3775 states and 5484 transitions. Word has length 175 [2022-01-11 00:18:38,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:38,541 INFO L470 AbstractCegarLoop]: Abstraction has 3775 states and 5484 transitions. [2022-01-11 00:18:38,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:38,541 INFO L276 IsEmpty]: Start isEmpty. Operand 3775 states and 5484 transitions. [2022-01-11 00:18:38,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 00:18:38,542 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:38,542 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:38,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 00:18:38,542 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:38,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:38,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1965965689, now seen corresponding path program 1 times [2022-01-11 00:18:38,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:38,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021680202] [2022-01-11 00:18:38,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:38,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:38,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:38,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:38,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:38,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021680202] [2022-01-11 00:18:38,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021680202] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:38,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:38,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:38,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863914978] [2022-01-11 00:18:38,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:38,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:38,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:38,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:38,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:38,582 INFO L87 Difference]: Start difference. First operand 3775 states and 5484 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:38,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:38,709 INFO L93 Difference]: Finished difference Result 7517 states and 10918 transitions. [2022-01-11 00:18:38,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:38,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2022-01-11 00:18:38,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:38,716 INFO L225 Difference]: With dead ends: 7517 [2022-01-11 00:18:38,716 INFO L226 Difference]: Without dead ends: 3775 [2022-01-11 00:18:38,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:38,722 INFO L933 BasicCegarLoop]: 2938 mSDtfsCounter, 2911 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2911 SdHoareTripleChecker+Valid, 2938 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:38,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2911 Valid, 2938 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:38,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3775 states. [2022-01-11 00:18:38,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3775 to 3775. [2022-01-11 00:18:38,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3775 states, 3773 states have (on average 1.4513649615690432) internal successors, (5476), 3774 states have internal predecessors, (5476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:38,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3775 states to 3775 states and 5476 transitions. [2022-01-11 00:18:38,921 INFO L78 Accepts]: Start accepts. Automaton has 3775 states and 5476 transitions. Word has length 175 [2022-01-11 00:18:38,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:38,921 INFO L470 AbstractCegarLoop]: Abstraction has 3775 states and 5476 transitions. [2022-01-11 00:18:38,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:38,921 INFO L276 IsEmpty]: Start isEmpty. Operand 3775 states and 5476 transitions. [2022-01-11 00:18:38,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 00:18:38,923 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:38,923 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:38,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 00:18:38,923 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:38,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:38,924 INFO L85 PathProgramCache]: Analyzing trace with hash 43075417, now seen corresponding path program 1 times [2022-01-11 00:18:38,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:38,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31320569] [2022-01-11 00:18:38,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:38,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:38,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:38,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:38,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:38,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31320569] [2022-01-11 00:18:38,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31320569] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:38,978 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:38,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:38,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635254507] [2022-01-11 00:18:38,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:38,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:38,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:38,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:38,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:38,980 INFO L87 Difference]: Start difference. First operand 3775 states and 5476 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:39,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:39,175 INFO L93 Difference]: Finished difference Result 7516 states and 10901 transitions. [2022-01-11 00:18:39,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:39,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2022-01-11 00:18:39,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:39,182 INFO L225 Difference]: With dead ends: 7516 [2022-01-11 00:18:39,182 INFO L226 Difference]: Without dead ends: 3775 [2022-01-11 00:18:39,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:39,190 INFO L933 BasicCegarLoop]: 2901 mSDtfsCounter, 2747 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2747 SdHoareTripleChecker+Valid, 3039 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:39,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2747 Valid, 3039 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:18:39,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3775 states. [2022-01-11 00:18:39,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3775 to 3775. [2022-01-11 00:18:39,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3775 states, 3773 states have (on average 1.4412934004770739) internal successors, (5438), 3774 states have internal predecessors, (5438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:39,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3775 states to 3775 states and 5438 transitions. [2022-01-11 00:18:39,322 INFO L78 Accepts]: Start accepts. Automaton has 3775 states and 5438 transitions. Word has length 175 [2022-01-11 00:18:39,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:39,323 INFO L470 AbstractCegarLoop]: Abstraction has 3775 states and 5438 transitions. [2022-01-11 00:18:39,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:39,323 INFO L276 IsEmpty]: Start isEmpty. Operand 3775 states and 5438 transitions. [2022-01-11 00:18:39,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 00:18:39,324 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:39,324 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:39,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 00:18:39,324 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:39,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:39,325 INFO L85 PathProgramCache]: Analyzing trace with hash -180948744, now seen corresponding path program 1 times [2022-01-11 00:18:39,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:39,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395282777] [2022-01-11 00:18:39,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:39,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:39,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:39,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:39,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:39,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395282777] [2022-01-11 00:18:39,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395282777] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:39,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:39,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:39,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585016981] [2022-01-11 00:18:39,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:39,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:39,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:39,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:39,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:39,368 INFO L87 Difference]: Start difference. First operand 3775 states and 5438 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:39,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:39,533 INFO L93 Difference]: Finished difference Result 7515 states and 10824 transitions. [2022-01-11 00:18:39,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:39,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2022-01-11 00:18:39,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:39,539 INFO L225 Difference]: With dead ends: 7515 [2022-01-11 00:18:39,539 INFO L226 Difference]: Without dead ends: 3775 [2022-01-11 00:18:39,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:39,544 INFO L933 BasicCegarLoop]: 2880 mSDtfsCounter, 2726 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2726 SdHoareTripleChecker+Valid, 3017 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:39,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2726 Valid, 3017 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:39,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3775 states. [2022-01-11 00:18:39,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3775 to 3775. [2022-01-11 00:18:39,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3775 states, 3773 states have (on average 1.4312218393851046) internal successors, (5400), 3774 states have internal predecessors, (5400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:39,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3775 states to 3775 states and 5400 transitions. [2022-01-11 00:18:39,673 INFO L78 Accepts]: Start accepts. Automaton has 3775 states and 5400 transitions. Word has length 175 [2022-01-11 00:18:39,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:39,673 INFO L470 AbstractCegarLoop]: Abstraction has 3775 states and 5400 transitions. [2022-01-11 00:18:39,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:39,673 INFO L276 IsEmpty]: Start isEmpty. Operand 3775 states and 5400 transitions. [2022-01-11 00:18:39,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 00:18:39,674 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:39,674 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:39,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 00:18:39,675 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:39,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:39,675 INFO L85 PathProgramCache]: Analyzing trace with hash 785196439, now seen corresponding path program 1 times [2022-01-11 00:18:39,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:39,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558235348] [2022-01-11 00:18:39,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:39,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:39,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:39,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:39,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:39,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558235348] [2022-01-11 00:18:39,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558235348] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:39,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:39,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:39,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084287412] [2022-01-11 00:18:39,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:39,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:39,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:39,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:39,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:39,715 INFO L87 Difference]: Start difference. First operand 3775 states and 5400 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:39,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:39,871 INFO L93 Difference]: Finished difference Result 7514 states and 10747 transitions. [2022-01-11 00:18:39,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:39,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2022-01-11 00:18:39,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:39,878 INFO L225 Difference]: With dead ends: 7514 [2022-01-11 00:18:39,879 INFO L226 Difference]: Without dead ends: 3775 [2022-01-11 00:18:39,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:39,885 INFO L933 BasicCegarLoop]: 2859 mSDtfsCounter, 2705 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2705 SdHoareTripleChecker+Valid, 2995 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:39,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2705 Valid, 2995 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:39,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3775 states. [2022-01-11 00:18:40,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3775 to 3775. [2022-01-11 00:18:40,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3775 states, 3773 states have (on average 1.4211502782931353) internal successors, (5362), 3774 states have internal predecessors, (5362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:40,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3775 states to 3775 states and 5362 transitions. [2022-01-11 00:18:40,050 INFO L78 Accepts]: Start accepts. Automaton has 3775 states and 5362 transitions. Word has length 175 [2022-01-11 00:18:40,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:40,050 INFO L470 AbstractCegarLoop]: Abstraction has 3775 states and 5362 transitions. [2022-01-11 00:18:40,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:40,050 INFO L276 IsEmpty]: Start isEmpty. Operand 3775 states and 5362 transitions. [2022-01-11 00:18:40,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 00:18:40,051 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:40,051 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:40,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 00:18:40,052 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:40,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:40,052 INFO L85 PathProgramCache]: Analyzing trace with hash 623500726, now seen corresponding path program 1 times [2022-01-11 00:18:40,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:40,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570178166] [2022-01-11 00:18:40,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:40,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:40,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:40,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:40,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:40,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570178166] [2022-01-11 00:18:40,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570178166] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:40,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:40,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:40,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634778522] [2022-01-11 00:18:40,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:40,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:40,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:40,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:40,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:40,098 INFO L87 Difference]: Start difference. First operand 3775 states and 5362 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:40,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:40,274 INFO L93 Difference]: Finished difference Result 7513 states and 10670 transitions. [2022-01-11 00:18:40,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:40,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2022-01-11 00:18:40,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:40,282 INFO L225 Difference]: With dead ends: 7513 [2022-01-11 00:18:40,282 INFO L226 Difference]: Without dead ends: 3775 [2022-01-11 00:18:40,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:40,287 INFO L933 BasicCegarLoop]: 2838 mSDtfsCounter, 2684 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2684 SdHoareTripleChecker+Valid, 2973 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:40,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2684 Valid, 2973 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:40,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3775 states. [2022-01-11 00:18:40,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3775 to 3775. [2022-01-11 00:18:40,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3775 states, 3773 states have (on average 1.4110787172011663) internal successors, (5324), 3774 states have internal predecessors, (5324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:40,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3775 states to 3775 states and 5324 transitions. [2022-01-11 00:18:40,432 INFO L78 Accepts]: Start accepts. Automaton has 3775 states and 5324 transitions. Word has length 175 [2022-01-11 00:18:40,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:40,433 INFO L470 AbstractCegarLoop]: Abstraction has 3775 states and 5324 transitions. [2022-01-11 00:18:40,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:40,433 INFO L276 IsEmpty]: Start isEmpty. Operand 3775 states and 5324 transitions. [2022-01-11 00:18:40,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 00:18:40,434 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:40,434 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:40,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 00:18:40,434 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:40,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:40,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1563095253, now seen corresponding path program 1 times [2022-01-11 00:18:40,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:40,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379435050] [2022-01-11 00:18:40,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:40,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:40,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:40,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:40,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:40,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379435050] [2022-01-11 00:18:40,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379435050] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:40,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:40,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:40,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448726888] [2022-01-11 00:18:40,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:40,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:40,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:40,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:40,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:40,478 INFO L87 Difference]: Start difference. First operand 3775 states and 5324 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:40,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:40,664 INFO L93 Difference]: Finished difference Result 7511 states and 10591 transitions. [2022-01-11 00:18:40,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:40,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2022-01-11 00:18:40,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:40,671 INFO L225 Difference]: With dead ends: 7511 [2022-01-11 00:18:40,671 INFO L226 Difference]: Without dead ends: 3775 [2022-01-11 00:18:40,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:40,677 INFO L933 BasicCegarLoop]: 2817 mSDtfsCounter, 2662 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2662 SdHoareTripleChecker+Valid, 2951 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:40,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2662 Valid, 2951 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:40,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3775 states. [2022-01-11 00:18:40,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3775 to 3775. [2022-01-11 00:18:40,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3775 states, 3773 states have (on average 1.401007156109197) internal successors, (5286), 3774 states have internal predecessors, (5286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:40,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3775 states to 3775 states and 5286 transitions. [2022-01-11 00:18:40,806 INFO L78 Accepts]: Start accepts. Automaton has 3775 states and 5286 transitions. Word has length 175 [2022-01-11 00:18:40,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:40,806 INFO L470 AbstractCegarLoop]: Abstraction has 3775 states and 5286 transitions. [2022-01-11 00:18:40,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:40,807 INFO L276 IsEmpty]: Start isEmpty. Operand 3775 states and 5286 transitions. [2022-01-11 00:18:40,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 00:18:40,808 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:40,808 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:40,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 00:18:40,808 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:40,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:40,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1274716788, now seen corresponding path program 1 times [2022-01-11 00:18:40,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:40,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868425206] [2022-01-11 00:18:40,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:40,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:40,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:40,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:40,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:40,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868425206] [2022-01-11 00:18:40,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868425206] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:40,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:40,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:40,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056252416] [2022-01-11 00:18:40,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:40,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:40,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:40,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:40,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:40,844 INFO L87 Difference]: Start difference. First operand 3775 states and 5286 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:41,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:41,010 INFO L93 Difference]: Finished difference Result 7510 states and 10514 transitions. [2022-01-11 00:18:41,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:41,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2022-01-11 00:18:41,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:41,016 INFO L225 Difference]: With dead ends: 7510 [2022-01-11 00:18:41,016 INFO L226 Difference]: Without dead ends: 3775 [2022-01-11 00:18:41,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:41,021 INFO L933 BasicCegarLoop]: 2796 mSDtfsCounter, 2641 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2641 SdHoareTripleChecker+Valid, 2929 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:41,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2641 Valid, 2929 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:41,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3775 states. [2022-01-11 00:18:41,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3775 to 3775. [2022-01-11 00:18:41,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3775 states, 3773 states have (on average 1.3909355950172277) internal successors, (5248), 3774 states have internal predecessors, (5248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:41,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3775 states to 3775 states and 5248 transitions. [2022-01-11 00:18:41,232 INFO L78 Accepts]: Start accepts. Automaton has 3775 states and 5248 transitions. Word has length 175 [2022-01-11 00:18:41,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:41,232 INFO L470 AbstractCegarLoop]: Abstraction has 3775 states and 5248 transitions. [2022-01-11 00:18:41,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:41,232 INFO L276 IsEmpty]: Start isEmpty. Operand 3775 states and 5248 transitions. [2022-01-11 00:18:41,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 00:18:41,234 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:41,234 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:41,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 00:18:41,234 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:41,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:41,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1487714195, now seen corresponding path program 1 times [2022-01-11 00:18:41,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:41,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061686565] [2022-01-11 00:18:41,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:41,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:41,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:41,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:41,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:41,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061686565] [2022-01-11 00:18:41,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061686565] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:41,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:41,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:41,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781321478] [2022-01-11 00:18:41,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:41,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:41,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:41,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:41,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:41,287 INFO L87 Difference]: Start difference. First operand 3775 states and 5248 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:41,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:41,503 INFO L93 Difference]: Finished difference Result 7509 states and 10437 transitions. [2022-01-11 00:18:41,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:41,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2022-01-11 00:18:41,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:41,510 INFO L225 Difference]: With dead ends: 7509 [2022-01-11 00:18:41,511 INFO L226 Difference]: Without dead ends: 3775 [2022-01-11 00:18:41,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:41,516 INFO L933 BasicCegarLoop]: 2775 mSDtfsCounter, 2620 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2620 SdHoareTripleChecker+Valid, 2907 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:41,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2620 Valid, 2907 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:41,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3775 states. [2022-01-11 00:18:41,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3775 to 3775. [2022-01-11 00:18:41,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3775 states, 3773 states have (on average 1.3808640339252585) internal successors, (5210), 3774 states have internal predecessors, (5210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:41,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3775 states to 3775 states and 5210 transitions. [2022-01-11 00:18:41,647 INFO L78 Accepts]: Start accepts. Automaton has 3775 states and 5210 transitions. Word has length 175 [2022-01-11 00:18:41,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:41,648 INFO L470 AbstractCegarLoop]: Abstraction has 3775 states and 5210 transitions. [2022-01-11 00:18:41,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:41,648 INFO L276 IsEmpty]: Start isEmpty. Operand 3775 states and 5210 transitions. [2022-01-11 00:18:41,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 00:18:41,648 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:41,649 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:41,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 00:18:41,649 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:41,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:41,649 INFO L85 PathProgramCache]: Analyzing trace with hash -791754830, now seen corresponding path program 1 times [2022-01-11 00:18:41,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:41,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724432260] [2022-01-11 00:18:41,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:41,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:41,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:41,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:41,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:41,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724432260] [2022-01-11 00:18:41,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724432260] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:41,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:41,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:41,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296453159] [2022-01-11 00:18:41,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:41,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:41,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:41,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:41,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:41,684 INFO L87 Difference]: Start difference. First operand 3775 states and 5210 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:41,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:41,876 INFO L93 Difference]: Finished difference Result 7508 states and 10360 transitions. [2022-01-11 00:18:41,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:41,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2022-01-11 00:18:41,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:41,883 INFO L225 Difference]: With dead ends: 7508 [2022-01-11 00:18:41,883 INFO L226 Difference]: Without dead ends: 3775 [2022-01-11 00:18:41,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:41,887 INFO L933 BasicCegarLoop]: 2754 mSDtfsCounter, 2599 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2599 SdHoareTripleChecker+Valid, 2885 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:41,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2599 Valid, 2885 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:41,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3775 states. [2022-01-11 00:18:42,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3775 to 3775. [2022-01-11 00:18:42,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3775 states, 3773 states have (on average 1.3707924728332892) internal successors, (5172), 3774 states have internal predecessors, (5172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:42,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3775 states to 3775 states and 5172 transitions. [2022-01-11 00:18:42,022 INFO L78 Accepts]: Start accepts. Automaton has 3775 states and 5172 transitions. Word has length 175 [2022-01-11 00:18:42,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:42,023 INFO L470 AbstractCegarLoop]: Abstraction has 3775 states and 5172 transitions. [2022-01-11 00:18:42,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:42,023 INFO L276 IsEmpty]: Start isEmpty. Operand 3775 states and 5172 transitions. [2022-01-11 00:18:42,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 00:18:42,024 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:42,024 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:42,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 00:18:42,024 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:42,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:42,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1717513041, now seen corresponding path program 1 times [2022-01-11 00:18:42,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:42,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519557016] [2022-01-11 00:18:42,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:42,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:42,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:42,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:42,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:42,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519557016] [2022-01-11 00:18:42,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519557016] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:42,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:42,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:42,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367988286] [2022-01-11 00:18:42,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:42,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:42,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:42,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:42,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:42,060 INFO L87 Difference]: Start difference. First operand 3775 states and 5172 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:42,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:42,228 INFO L93 Difference]: Finished difference Result 7507 states and 10283 transitions. [2022-01-11 00:18:42,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:42,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2022-01-11 00:18:42,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:42,235 INFO L225 Difference]: With dead ends: 7507 [2022-01-11 00:18:42,235 INFO L226 Difference]: Without dead ends: 3775 [2022-01-11 00:18:42,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:42,240 INFO L933 BasicCegarLoop]: 2733 mSDtfsCounter, 2578 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2578 SdHoareTripleChecker+Valid, 2863 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:42,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2578 Valid, 2863 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:42,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3775 states. [2022-01-11 00:18:42,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3775 to 3775. [2022-01-11 00:18:42,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3775 states, 3773 states have (on average 1.36072091174132) internal successors, (5134), 3774 states have internal predecessors, (5134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:42,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3775 states to 3775 states and 5134 transitions. [2022-01-11 00:18:42,401 INFO L78 Accepts]: Start accepts. Automaton has 3775 states and 5134 transitions. Word has length 175 [2022-01-11 00:18:42,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:42,401 INFO L470 AbstractCegarLoop]: Abstraction has 3775 states and 5134 transitions. [2022-01-11 00:18:42,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:42,401 INFO L276 IsEmpty]: Start isEmpty. Operand 3775 states and 5134 transitions. [2022-01-11 00:18:42,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 00:18:42,402 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:42,402 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:42,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 00:18:42,402 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:42,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:42,403 INFO L85 PathProgramCache]: Analyzing trace with hash 611801584, now seen corresponding path program 1 times [2022-01-11 00:18:42,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:42,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308646865] [2022-01-11 00:18:42,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:42,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:42,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:42,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:42,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308646865] [2022-01-11 00:18:42,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308646865] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:42,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:42,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:42,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595798945] [2022-01-11 00:18:42,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:42,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:42,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:42,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:42,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:42,439 INFO L87 Difference]: Start difference. First operand 3775 states and 5134 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:42,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:42,628 INFO L93 Difference]: Finished difference Result 7506 states and 10206 transitions. [2022-01-11 00:18:42,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:42,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2022-01-11 00:18:42,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:42,635 INFO L225 Difference]: With dead ends: 7506 [2022-01-11 00:18:42,635 INFO L226 Difference]: Without dead ends: 3775 [2022-01-11 00:18:42,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:42,640 INFO L933 BasicCegarLoop]: 2712 mSDtfsCounter, 2557 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2557 SdHoareTripleChecker+Valid, 2841 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:42,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2557 Valid, 2841 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:42,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3775 states. [2022-01-11 00:18:42,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3775 to 3775. [2022-01-11 00:18:42,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3775 states, 3773 states have (on average 1.3506493506493507) internal successors, (5096), 3774 states have internal predecessors, (5096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:42,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3775 states to 3775 states and 5096 transitions. [2022-01-11 00:18:42,778 INFO L78 Accepts]: Start accepts. Automaton has 3775 states and 5096 transitions. Word has length 175 [2022-01-11 00:18:42,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:42,779 INFO L470 AbstractCegarLoop]: Abstraction has 3775 states and 5096 transitions. [2022-01-11 00:18:42,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:42,779 INFO L276 IsEmpty]: Start isEmpty. Operand 3775 states and 5096 transitions. [2022-01-11 00:18:42,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 00:18:42,779 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:42,779 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:42,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 00:18:42,780 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:42,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:42,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1428304881, now seen corresponding path program 1 times [2022-01-11 00:18:42,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:42,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578961444] [2022-01-11 00:18:42,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:42,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:42,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:42,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:42,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:42,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578961444] [2022-01-11 00:18:42,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578961444] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:42,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:42,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:42,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444555677] [2022-01-11 00:18:42,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:42,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:42,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:42,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:42,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:42,824 INFO L87 Difference]: Start difference. First operand 3775 states and 5096 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:42,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:42,997 INFO L93 Difference]: Finished difference Result 7505 states and 10129 transitions. [2022-01-11 00:18:42,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:42,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2022-01-11 00:18:42,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:43,004 INFO L225 Difference]: With dead ends: 7505 [2022-01-11 00:18:43,004 INFO L226 Difference]: Without dead ends: 3775 [2022-01-11 00:18:43,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:43,010 INFO L933 BasicCegarLoop]: 2691 mSDtfsCounter, 2536 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2536 SdHoareTripleChecker+Valid, 2819 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:43,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2536 Valid, 2819 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:43,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3775 states. [2022-01-11 00:18:43,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3775 to 3775. [2022-01-11 00:18:43,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3775 states, 3773 states have (on average 1.3405777895573814) internal successors, (5058), 3774 states have internal predecessors, (5058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:43,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3775 states to 3775 states and 5058 transitions. [2022-01-11 00:18:43,182 INFO L78 Accepts]: Start accepts. Automaton has 3775 states and 5058 transitions. Word has length 175 [2022-01-11 00:18:43,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:43,182 INFO L470 AbstractCegarLoop]: Abstraction has 3775 states and 5058 transitions. [2022-01-11 00:18:43,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:43,183 INFO L276 IsEmpty]: Start isEmpty. Operand 3775 states and 5058 transitions. [2022-01-11 00:18:43,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 00:18:43,183 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:43,183 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:43,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 00:18:43,184 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:43,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:43,184 INFO L85 PathProgramCache]: Analyzing trace with hash 632281390, now seen corresponding path program 1 times [2022-01-11 00:18:43,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:43,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288605967] [2022-01-11 00:18:43,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:43,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:43,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:43,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:43,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:43,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288605967] [2022-01-11 00:18:43,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288605967] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:43,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:43,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:43,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209393478] [2022-01-11 00:18:43,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:43,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:43,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:43,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:43,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:43,217 INFO L87 Difference]: Start difference. First operand 3775 states and 5058 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:43,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:43,378 INFO L93 Difference]: Finished difference Result 7503 states and 10050 transitions. [2022-01-11 00:18:43,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:43,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2022-01-11 00:18:43,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:43,385 INFO L225 Difference]: With dead ends: 7503 [2022-01-11 00:18:43,385 INFO L226 Difference]: Without dead ends: 3775 [2022-01-11 00:18:43,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:43,389 INFO L933 BasicCegarLoop]: 2670 mSDtfsCounter, 2514 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2514 SdHoareTripleChecker+Valid, 2797 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:43,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2514 Valid, 2797 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:43,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3775 states. [2022-01-11 00:18:43,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3775 to 3775. [2022-01-11 00:18:43,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3775 states, 3773 states have (on average 1.330506228465412) internal successors, (5020), 3774 states have internal predecessors, (5020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:43,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3775 states to 3775 states and 5020 transitions. [2022-01-11 00:18:43,543 INFO L78 Accepts]: Start accepts. Automaton has 3775 states and 5020 transitions. Word has length 175 [2022-01-11 00:18:43,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:43,543 INFO L470 AbstractCegarLoop]: Abstraction has 3775 states and 5020 transitions. [2022-01-11 00:18:43,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:43,544 INFO L276 IsEmpty]: Start isEmpty. Operand 3775 states and 5020 transitions. [2022-01-11 00:18:43,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 00:18:43,544 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:43,544 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:43,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 00:18:43,545 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:43,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:43,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1579123917, now seen corresponding path program 1 times [2022-01-11 00:18:43,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:43,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266275633] [2022-01-11 00:18:43,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:43,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:43,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:43,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:43,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:43,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266275633] [2022-01-11 00:18:43,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266275633] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:43,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:43,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:18:43,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237772095] [2022-01-11 00:18:43,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:43,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:18:43,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:43,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:18:43,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:18:43,604 INFO L87 Difference]: Start difference. First operand 3775 states and 5020 transitions. Second operand has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:44,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:44,079 INFO L93 Difference]: Finished difference Result 8725 states and 11683 transitions. [2022-01-11 00:18:44,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 00:18:44,079 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2022-01-11 00:18:44,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:44,087 INFO L225 Difference]: With dead ends: 8725 [2022-01-11 00:18:44,087 INFO L226 Difference]: Without dead ends: 5011 [2022-01-11 00:18:44,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 00:18:44,094 INFO L933 BasicCegarLoop]: 2740 mSDtfsCounter, 7580 mSDsluCounter, 1878 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7580 SdHoareTripleChecker+Valid, 4618 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:44,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7580 Valid, 4618 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:18:44,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5011 states. [2022-01-11 00:18:44,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5011 to 3781. [2022-01-11 00:18:44,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3781 states, 3779 states have (on average 1.3220428684837258) internal successors, (4996), 3780 states have internal predecessors, (4996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:44,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3781 states to 3781 states and 4996 transitions. [2022-01-11 00:18:44,336 INFO L78 Accepts]: Start accepts. Automaton has 3781 states and 4996 transitions. Word has length 175 [2022-01-11 00:18:44,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:44,336 INFO L470 AbstractCegarLoop]: Abstraction has 3781 states and 4996 transitions. [2022-01-11 00:18:44,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:44,337 INFO L276 IsEmpty]: Start isEmpty. Operand 3781 states and 4996 transitions. [2022-01-11 00:18:44,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 00:18:44,338 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:44,338 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:44,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-11 00:18:44,338 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:44,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:44,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1429361074, now seen corresponding path program 1 times [2022-01-11 00:18:44,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:44,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050441493] [2022-01-11 00:18:44,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:44,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:44,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:44,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:44,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:44,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050441493] [2022-01-11 00:18:44,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050441493] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:44,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:44,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:44,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120231635] [2022-01-11 00:18:44,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:44,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:44,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:44,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:44,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:44,395 INFO L87 Difference]: Start difference. First operand 3781 states and 4996 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:44,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:44,818 INFO L93 Difference]: Finished difference Result 10857 states and 14333 transitions. [2022-01-11 00:18:44,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:44,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2022-01-11 00:18:44,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:44,828 INFO L225 Difference]: With dead ends: 10857 [2022-01-11 00:18:44,828 INFO L226 Difference]: Without dead ends: 7153 [2022-01-11 00:18:44,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:44,832 INFO L933 BasicCegarLoop]: 2655 mSDtfsCounter, 2420 mSDsluCounter, 2412 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2420 SdHoareTripleChecker+Valid, 5067 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:44,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2420 Valid, 5067 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:44,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7153 states. [2022-01-11 00:18:45,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7153 to 7145. [2022-01-11 00:18:45,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7145 states, 7143 states have (on average 1.3162536749265015) internal successors, (9402), 7144 states have internal predecessors, (9402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:45,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7145 states to 7145 states and 9402 transitions. [2022-01-11 00:18:45,205 INFO L78 Accepts]: Start accepts. Automaton has 7145 states and 9402 transitions. Word has length 175 [2022-01-11 00:18:45,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:45,206 INFO L470 AbstractCegarLoop]: Abstraction has 7145 states and 9402 transitions. [2022-01-11 00:18:45,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:45,206 INFO L276 IsEmpty]: Start isEmpty. Operand 7145 states and 9402 transitions. [2022-01-11 00:18:45,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 00:18:45,207 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:45,207 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:45,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-11 00:18:45,207 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:45,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:45,207 INFO L85 PathProgramCache]: Analyzing trace with hash 2129684173, now seen corresponding path program 1 times [2022-01-11 00:18:45,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:45,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455617104] [2022-01-11 00:18:45,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:45,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:45,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:45,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:45,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:45,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455617104] [2022-01-11 00:18:45,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455617104] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:45,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:45,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:18:45,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894999568] [2022-01-11 00:18:45,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:45,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:18:45,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:45,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:18:45,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:18:45,255 INFO L87 Difference]: Start difference. First operand 7145 states and 9402 transitions. Second operand has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:45,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:45,946 INFO L93 Difference]: Finished difference Result 18351 states and 24261 transitions. [2022-01-11 00:18:45,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 00:18:45,946 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2022-01-11 00:18:45,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:45,961 INFO L225 Difference]: With dead ends: 18351 [2022-01-11 00:18:45,961 INFO L226 Difference]: Without dead ends: 11301 [2022-01-11 00:18:45,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 00:18:45,970 INFO L933 BasicCegarLoop]: 2740 mSDtfsCounter, 6672 mSDsluCounter, 4580 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6672 SdHoareTripleChecker+Valid, 7320 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:45,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6672 Valid, 7320 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:18:45,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11301 states. [2022-01-11 00:18:46,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11301 to 7157. [2022-01-11 00:18:46,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7157 states, 7155 states have (on average 1.3077568134171909) internal successors, (9357), 7156 states have internal predecessors, (9357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:46,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7157 states to 7157 states and 9357 transitions. [2022-01-11 00:18:46,408 INFO L78 Accepts]: Start accepts. Automaton has 7157 states and 9357 transitions. Word has length 175 [2022-01-11 00:18:46,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:46,408 INFO L470 AbstractCegarLoop]: Abstraction has 7157 states and 9357 transitions. [2022-01-11 00:18:46,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:46,408 INFO L276 IsEmpty]: Start isEmpty. Operand 7157 states and 9357 transitions. [2022-01-11 00:18:46,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 00:18:46,409 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:46,409 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:46,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-11 00:18:46,410 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:46,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:46,410 INFO L85 PathProgramCache]: Analyzing trace with hash -310937586, now seen corresponding path program 1 times [2022-01-11 00:18:46,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:46,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678259122] [2022-01-11 00:18:46,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:46,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:46,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:46,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:46,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:46,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678259122] [2022-01-11 00:18:46,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678259122] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:46,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:46,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:46,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816156906] [2022-01-11 00:18:46,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:46,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:46,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:46,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:46,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:46,455 INFO L87 Difference]: Start difference. First operand 7157 states and 9357 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:47,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:47,281 INFO L93 Difference]: Finished difference Result 20702 states and 27041 transitions. [2022-01-11 00:18:47,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:47,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2022-01-11 00:18:47,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:47,297 INFO L225 Difference]: With dead ends: 20702 [2022-01-11 00:18:47,298 INFO L226 Difference]: Without dead ends: 13677 [2022-01-11 00:18:47,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:47,306 INFO L933 BasicCegarLoop]: 2636 mSDtfsCounter, 2354 mSDsluCounter, 2397 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2354 SdHoareTripleChecker+Valid, 5033 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:47,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2354 Valid, 5033 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:47,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13677 states. [2022-01-11 00:18:48,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13677 to 13665. [2022-01-11 00:18:48,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13665 states, 13663 states have (on average 1.3016906975042084) internal successors, (17785), 13664 states have internal predecessors, (17785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:48,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13665 states to 13665 states and 17785 transitions. [2022-01-11 00:18:48,063 INFO L78 Accepts]: Start accepts. Automaton has 13665 states and 17785 transitions. Word has length 175 [2022-01-11 00:18:48,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:48,063 INFO L470 AbstractCegarLoop]: Abstraction has 13665 states and 17785 transitions. [2022-01-11 00:18:48,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:48,063 INFO L276 IsEmpty]: Start isEmpty. Operand 13665 states and 17785 transitions. [2022-01-11 00:18:48,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 00:18:48,064 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:48,064 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:48,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-11 00:18:48,064 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:48,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:48,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1258474125, now seen corresponding path program 1 times [2022-01-11 00:18:48,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:48,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964423778] [2022-01-11 00:18:48,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:48,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:48,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:48,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:48,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:48,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964423778] [2022-01-11 00:18:48,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964423778] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:48,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:48,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:48,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734256071] [2022-01-11 00:18:48,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:48,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:48,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:48,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:48,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:48,118 INFO L87 Difference]: Start difference. First operand 13665 states and 17785 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:48,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:48,877 INFO L93 Difference]: Finished difference Result 27308 states and 35533 transitions. [2022-01-11 00:18:48,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:48,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2022-01-11 00:18:48,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:48,896 INFO L225 Difference]: With dead ends: 27308 [2022-01-11 00:18:48,897 INFO L226 Difference]: Without dead ends: 13665 [2022-01-11 00:18:48,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:48,909 INFO L933 BasicCegarLoop]: 2643 mSDtfsCounter, 2514 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2514 SdHoareTripleChecker+Valid, 2643 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:48,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2514 Valid, 2643 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:48,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13665 states. [2022-01-11 00:18:49,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13665 to 13665. [2022-01-11 00:18:49,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13665 states, 13663 states have (on average 1.299787747932372) internal successors, (17759), 13664 states have internal predecessors, (17759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:49,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13665 states to 13665 states and 17759 transitions. [2022-01-11 00:18:49,681 INFO L78 Accepts]: Start accepts. Automaton has 13665 states and 17759 transitions. Word has length 175 [2022-01-11 00:18:49,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:49,681 INFO L470 AbstractCegarLoop]: Abstraction has 13665 states and 17759 transitions. [2022-01-11 00:18:49,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:49,682 INFO L276 IsEmpty]: Start isEmpty. Operand 13665 states and 17759 transitions. [2022-01-11 00:18:49,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 00:18:49,682 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:49,682 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:49,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-11 00:18:49,683 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:49,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:49,683 INFO L85 PathProgramCache]: Analyzing trace with hash -677186162, now seen corresponding path program 1 times [2022-01-11 00:18:49,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:49,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719333112] [2022-01-11 00:18:49,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:49,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:49,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:49,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:49,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:49,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719333112] [2022-01-11 00:18:49,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719333112] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:49,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:49,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:49,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248575116] [2022-01-11 00:18:49,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:49,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:49,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:49,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:49,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:49,733 INFO L87 Difference]: Start difference. First operand 13665 states and 17759 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:50,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:50,560 INFO L93 Difference]: Finished difference Result 27300 states and 35473 transitions. [2022-01-11 00:18:50,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:50,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2022-01-11 00:18:50,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:50,576 INFO L225 Difference]: With dead ends: 27300 [2022-01-11 00:18:50,576 INFO L226 Difference]: Without dead ends: 13665 [2022-01-11 00:18:50,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:50,587 INFO L933 BasicCegarLoop]: 2638 mSDtfsCounter, 2501 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2501 SdHoareTripleChecker+Valid, 2638 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:50,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2501 Valid, 2638 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:50,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13665 states. [2022-01-11 00:18:51,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13665 to 13665. [2022-01-11 00:18:51,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13665 states, 13663 states have (on average 1.2978847983605357) internal successors, (17733), 13664 states have internal predecessors, (17733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:51,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13665 states to 13665 states and 17733 transitions. [2022-01-11 00:18:51,470 INFO L78 Accepts]: Start accepts. Automaton has 13665 states and 17733 transitions. Word has length 175 [2022-01-11 00:18:51,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:51,470 INFO L470 AbstractCegarLoop]: Abstraction has 13665 states and 17733 transitions. [2022-01-11 00:18:51,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:51,470 INFO L276 IsEmpty]: Start isEmpty. Operand 13665 states and 17733 transitions. [2022-01-11 00:18:51,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 00:18:51,471 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:51,471 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:51,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-11 00:18:51,471 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:51,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:51,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1434104207, now seen corresponding path program 1 times [2022-01-11 00:18:51,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:51,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528664352] [2022-01-11 00:18:51,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:51,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:51,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:51,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:51,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:51,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528664352] [2022-01-11 00:18:51,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528664352] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:51,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:51,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:51,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030285956] [2022-01-11 00:18:51,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:51,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:51,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:51,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:51,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:51,523 INFO L87 Difference]: Start difference. First operand 13665 states and 17733 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:52,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:52,319 INFO L93 Difference]: Finished difference Result 27292 states and 35413 transitions. [2022-01-11 00:18:52,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:52,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2022-01-11 00:18:52,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:52,339 INFO L225 Difference]: With dead ends: 27292 [2022-01-11 00:18:52,339 INFO L226 Difference]: Without dead ends: 13665 [2022-01-11 00:18:52,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:52,355 INFO L933 BasicCegarLoop]: 2603 mSDtfsCounter, 2345 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2345 SdHoareTripleChecker+Valid, 2727 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:52,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2345 Valid, 2727 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:52,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13665 states. [2022-01-11 00:18:53,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13665 to 13665. [2022-01-11 00:18:53,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13665 states, 13663 states have (on average 1.2918831881724364) internal successors, (17651), 13664 states have internal predecessors, (17651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:53,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13665 states to 13665 states and 17651 transitions. [2022-01-11 00:18:53,167 INFO L78 Accepts]: Start accepts. Automaton has 13665 states and 17651 transitions. Word has length 175 [2022-01-11 00:18:53,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:53,168 INFO L470 AbstractCegarLoop]: Abstraction has 13665 states and 17651 transitions. [2022-01-11 00:18:53,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:53,168 INFO L276 IsEmpty]: Start isEmpty. Operand 13665 states and 17651 transitions. [2022-01-11 00:18:53,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 00:18:53,169 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:53,169 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:53,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-11 00:18:53,169 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:53,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:53,170 INFO L85 PathProgramCache]: Analyzing trace with hash -643105136, now seen corresponding path program 1 times [2022-01-11 00:18:53,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:53,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427821610] [2022-01-11 00:18:53,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:53,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:53,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:53,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:53,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:53,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427821610] [2022-01-11 00:18:53,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427821610] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:53,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:53,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:53,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203585634] [2022-01-11 00:18:53,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:53,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:53,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:53,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:53,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:53,226 INFO L87 Difference]: Start difference. First operand 13665 states and 17651 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:54,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:54,037 INFO L93 Difference]: Finished difference Result 27284 states and 35241 transitions. [2022-01-11 00:18:54,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:54,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2022-01-11 00:18:54,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:54,055 INFO L225 Difference]: With dead ends: 27284 [2022-01-11 00:18:54,055 INFO L226 Difference]: Without dead ends: 13665 [2022-01-11 00:18:54,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:54,066 INFO L933 BasicCegarLoop]: 2583 mSDtfsCounter, 2318 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2318 SdHoareTripleChecker+Valid, 2706 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:54,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2318 Valid, 2706 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:54,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13665 states. [2022-01-11 00:18:54,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13665 to 13665. [2022-01-11 00:18:54,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13665 states, 13663 states have (on average 1.2858815779843373) internal successors, (17569), 13664 states have internal predecessors, (17569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:54,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13665 states to 13665 states and 17569 transitions. [2022-01-11 00:18:54,886 INFO L78 Accepts]: Start accepts. Automaton has 13665 states and 17569 transitions. Word has length 175 [2022-01-11 00:18:54,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:54,886 INFO L470 AbstractCegarLoop]: Abstraction has 13665 states and 17569 transitions. [2022-01-11 00:18:54,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:54,886 INFO L276 IsEmpty]: Start isEmpty. Operand 13665 states and 17569 transitions. [2022-01-11 00:18:54,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-11 00:18:54,887 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:54,887 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:54,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-11 00:18:54,887 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:54,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:54,888 INFO L85 PathProgramCache]: Analyzing trace with hash 710204561, now seen corresponding path program 1 times [2022-01-11 00:18:54,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:54,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895661079] [2022-01-11 00:18:54,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:54,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:54,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:54,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:54,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:54,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895661079] [2022-01-11 00:18:54,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895661079] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:54,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:54,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:54,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937530243] [2022-01-11 00:18:54,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:54,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:54,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:54,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:54,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:54,935 INFO L87 Difference]: Start difference. First operand 13665 states and 17569 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:56,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:56,588 INFO L93 Difference]: Finished difference Result 40588 states and 52185 transitions. [2022-01-11 00:18:56,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:56,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2022-01-11 00:18:56,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:56,632 INFO L225 Difference]: With dead ends: 40588 [2022-01-11 00:18:56,632 INFO L226 Difference]: Without dead ends: 26972 [2022-01-11 00:18:56,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:56,656 INFO L933 BasicCegarLoop]: 2583 mSDtfsCounter, 2378 mSDsluCounter, 2355 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2378 SdHoareTripleChecker+Valid, 4938 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:56,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2378 Valid, 4938 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:56,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26972 states. [2022-01-11 00:18:58,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26972 to 26180. [2022-01-11 00:18:58,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26180 states, 26178 states have (on average 1.281801512720605) internal successors, (33555), 26179 states have internal predecessors, (33555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:58,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26180 states to 26180 states and 33555 transitions. [2022-01-11 00:18:58,220 INFO L78 Accepts]: Start accepts. Automaton has 26180 states and 33555 transitions. Word has length 175 [2022-01-11 00:18:58,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:58,220 INFO L470 AbstractCegarLoop]: Abstraction has 26180 states and 33555 transitions. [2022-01-11 00:18:58,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:58,220 INFO L276 IsEmpty]: Start isEmpty. Operand 26180 states and 33555 transitions. [2022-01-11 00:18:58,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2022-01-11 00:18:58,232 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:58,232 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:58,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-11 00:18:58,233 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:58,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:58,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1776340901, now seen corresponding path program 1 times [2022-01-11 00:18:58,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:58,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889715914] [2022-01-11 00:18:58,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:58,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:58,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:58,293 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:58,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:58,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889715914] [2022-01-11 00:18:58,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889715914] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:58,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:58,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:18:58,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262441425] [2022-01-11 00:18:58,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:58,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:58,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:58,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:58,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:58,294 INFO L87 Difference]: Start difference. First operand 26180 states and 33555 transitions. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:01,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:01,423 INFO L93 Difference]: Finished difference Result 77912 states and 99928 transitions. [2022-01-11 00:19:01,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:01,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 285 [2022-01-11 00:19:01,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:01,501 INFO L225 Difference]: With dead ends: 77912 [2022-01-11 00:19:01,502 INFO L226 Difference]: Without dead ends: 51787 [2022-01-11 00:19:01,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:01,525 INFO L933 BasicCegarLoop]: 2580 mSDtfsCounter, 2424 mSDsluCounter, 2355 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2424 SdHoareTripleChecker+Valid, 4935 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:01,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2424 Valid, 4935 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:19:01,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51787 states. [2022-01-11 00:19:04,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51787 to 50327. [2022-01-11 00:19:04,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50327 states, 50325 states have (on average 1.2795429706905117) internal successors, (64393), 50326 states have internal predecessors, (64393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:04,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50327 states to 50327 states and 64393 transitions. [2022-01-11 00:19:04,723 INFO L78 Accepts]: Start accepts. Automaton has 50327 states and 64393 transitions. Word has length 285 [2022-01-11 00:19:04,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:04,723 INFO L470 AbstractCegarLoop]: Abstraction has 50327 states and 64393 transitions. [2022-01-11 00:19:04,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:04,724 INFO L276 IsEmpty]: Start isEmpty. Operand 50327 states and 64393 transitions. [2022-01-11 00:19:04,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2022-01-11 00:19:04,742 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:04,743 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:19:04,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-11 00:19:04,743 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:04,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:04,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1070111644, now seen corresponding path program 1 times [2022-01-11 00:19:04,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:04,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499817593] [2022-01-11 00:19:04,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:04,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:04,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:04,805 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:19:04,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:04,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499817593] [2022-01-11 00:19:04,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499817593] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:04,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:04,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:19:04,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191029512] [2022-01-11 00:19:04,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:04,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:19:04,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:04,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:19:04,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:19:04,807 INFO L87 Difference]: Start difference. First operand 50327 states and 64393 transitions. Second operand has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:09,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:09,840 INFO L93 Difference]: Finished difference Result 125101 states and 160569 transitions. [2022-01-11 00:19:09,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 00:19:09,841 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 285 [2022-01-11 00:19:09,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:09,957 INFO L225 Difference]: With dead ends: 125101 [2022-01-11 00:19:09,957 INFO L226 Difference]: Without dead ends: 74915 [2022-01-11 00:19:10,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 00:19:10,152 INFO L933 BasicCegarLoop]: 2539 mSDtfsCounter, 5308 mSDsluCounter, 7229 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5308 SdHoareTripleChecker+Valid, 9768 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:10,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5308 Valid, 9768 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:19:10,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74915 states. [2022-01-11 00:19:13,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74915 to 50375. [2022-01-11 00:19:13,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50375 states, 50373 states have (on average 1.2709983522919024) internal successors, (64024), 50374 states have internal predecessors, (64024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:13,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50375 states to 50375 states and 64024 transitions. [2022-01-11 00:19:13,723 INFO L78 Accepts]: Start accepts. Automaton has 50375 states and 64024 transitions. Word has length 285 [2022-01-11 00:19:13,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:13,724 INFO L470 AbstractCegarLoop]: Abstraction has 50375 states and 64024 transitions. [2022-01-11 00:19:13,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:13,724 INFO L276 IsEmpty]: Start isEmpty. Operand 50375 states and 64024 transitions. [2022-01-11 00:19:13,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2022-01-11 00:19:13,742 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:13,742 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:19:13,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-11 00:19:13,742 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:13,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:13,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1261745754, now seen corresponding path program 1 times [2022-01-11 00:19:13,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:13,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551817000] [2022-01-11 00:19:13,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:13,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:13,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:13,816 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:19:13,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:13,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551817000] [2022-01-11 00:19:13,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551817000] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:13,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:13,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:19:13,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382165524] [2022-01-11 00:19:13,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:13,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:13,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:13,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:13,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:13,818 INFO L87 Difference]: Start difference. First operand 50375 states and 64024 transitions. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:20,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:20,136 INFO L93 Difference]: Finished difference Result 148076 states and 187362 transitions. [2022-01-11 00:19:20,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:20,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 285 [2022-01-11 00:19:20,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:20,285 INFO L225 Difference]: With dead ends: 148076 [2022-01-11 00:19:20,285 INFO L226 Difference]: Without dead ends: 97872 [2022-01-11 00:19:20,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:20,327 INFO L933 BasicCegarLoop]: 4268 mSDtfsCounter, 2115 mSDsluCounter, 2563 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2115 SdHoareTripleChecker+Valid, 6831 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:20,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2115 Valid, 6831 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:20,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97872 states. [2022-01-11 00:19:27,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97872 to 97868. [2022-01-11 00:19:27,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97868 states, 97866 states have (on average 1.2610508245968979) internal successors, (123414), 97867 states have internal predecessors, (123414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:27,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97868 states to 97868 states and 123414 transitions. [2022-01-11 00:19:27,595 INFO L78 Accepts]: Start accepts. Automaton has 97868 states and 123414 transitions. Word has length 285 [2022-01-11 00:19:27,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:27,595 INFO L470 AbstractCegarLoop]: Abstraction has 97868 states and 123414 transitions. [2022-01-11 00:19:27,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:27,596 INFO L276 IsEmpty]: Start isEmpty. Operand 97868 states and 123414 transitions. [2022-01-11 00:19:27,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2022-01-11 00:19:27,626 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:27,626 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:19:27,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-11 00:19:27,627 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:27,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:27,627 INFO L85 PathProgramCache]: Analyzing trace with hash -390924155, now seen corresponding path program 1 times [2022-01-11 00:19:27,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:27,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475483184] [2022-01-11 00:19:27,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:27,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:27,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:27,664 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 00:19:27,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:27,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475483184] [2022-01-11 00:19:27,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475483184] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:27,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:27,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:19:27,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692205534] [2022-01-11 00:19:27,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:27,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:27,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:27,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:27,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:27,667 INFO L87 Difference]: Start difference. First operand 97868 states and 123414 transitions. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)