/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/loop-invgen/SpamAssassin-loop.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 20:14:13,187 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 20:14:13,189 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 20:14:13,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 20:14:13,247 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 20:14:13,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 20:14:13,249 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 20:14:13,249 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 20:14:13,250 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 20:14:13,250 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 20:14:13,251 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 20:14:13,253 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 20:14:13,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 20:14:13,257 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 20:14:13,258 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 20:14:13,258 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 20:14:13,260 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 20:14:13,275 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 [2022-01-10 20:14:13,300 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 20:14:13,300 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 20:14:13,300 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 20:14:13,300 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 20:14:13,301 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 20:14:13,301 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 20:14:13,301 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 20:14:13,301 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 20:14:13,301 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 20:14:13,301 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 20:14:13,301 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 20:14:13,302 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 20:14:13,302 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 20:14:13,302 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 20:14:13,302 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 20:14:13,302 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 20:14:13,302 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 20:14:13,302 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 20:14:13,302 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 20:14:13,302 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 20:14:13,302 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 20:14:13,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 20:14:13,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 20:14:13,303 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 20:14:13,303 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 20:14:13,303 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 20:14:13,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 20:14:13,303 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 20:14:13,303 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 20:14:13,303 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 20:14:13,303 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 20:14:13,303 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 20:14:13,304 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 20:14:13,304 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 20:14:13,480 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 20:14:13,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 20:14:13,503 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 20:14:13,504 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 20:14:13,505 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 20:14:13,506 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i [2022-01-10 20:14:13,565 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/339f81956/b55c473e601e4df0b5b230db1812f76b/FLAG9477b78ff [2022-01-10 20:14:13,903 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 20:14:13,903 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i [2022-01-10 20:14:13,912 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/339f81956/b55c473e601e4df0b5b230db1812f76b/FLAG9477b78ff [2022-01-10 20:14:13,926 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/339f81956/b55c473e601e4df0b5b230db1812f76b [2022-01-10 20:14:13,928 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 20:14:13,930 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 20:14:13,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 20:14:13,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 20:14:13,935 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 20:14:13,935 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:14:13" (1/1) ... [2022-01-10 20:14:13,937 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cf764b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:14:13, skipping insertion in model container [2022-01-10 20:14:13,937 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:14:13" (1/1) ... [2022-01-10 20:14:13,941 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 20:14:13,955 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 20:14:14,106 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i[893,906] [2022-01-10 20:14:14,129 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 20:14:14,137 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 20:14:14,146 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i[893,906] [2022-01-10 20:14:14,167 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 20:14:14,175 INFO L208 MainTranslator]: Completed translation [2022-01-10 20:14:14,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:14:14 WrapperNode [2022-01-10 20:14:14,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 20:14:14,177 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 20:14:14,177 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 20:14:14,177 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 20:14:14,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:14:14" (1/1) ... [2022-01-10 20:14:14,195 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:14:14" (1/1) ... [2022-01-10 20:14:14,217 INFO L137 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 172 [2022-01-10 20:14:14,217 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 20:14:14,218 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 20:14:14,218 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 20:14:14,218 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 20:14:14,223 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:14:14" (1/1) ... [2022-01-10 20:14:14,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:14:14" (1/1) ... [2022-01-10 20:14:14,233 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:14:14" (1/1) ... [2022-01-10 20:14:14,233 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:14:14" (1/1) ... [2022-01-10 20:14:14,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:14:14" (1/1) ... [2022-01-10 20:14:14,247 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:14:14" (1/1) ... [2022-01-10 20:14:14,248 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:14:14" (1/1) ... [2022-01-10 20:14:14,249 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 20:14:14,250 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 20:14:14,250 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 20:14:14,250 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 20:14:14,253 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:14:14" (1/1) ... [2022-01-10 20:14:14,258 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 20:14:14,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:14:14,276 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 20:14:14,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 20:14:14,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 20:14:14,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 20:14:14,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 20:14:14,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 20:14:14,349 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 20:14:14,351 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 20:14:14,560 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 20:14:14,565 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 20:14:14,565 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 20:14:14,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:14:14 BoogieIcfgContainer [2022-01-10 20:14:14,566 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 20:14:14,567 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 20:14:14,567 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 20:14:14,568 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 20:14:14,570 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:14:14" (1/1) ... [2022-01-10 20:14:14,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:14:14 BasicIcfg [2022-01-10 20:14:14,643 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 20:14:14,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 20:14:14,644 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 20:14:14,646 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 20:14:14,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:14:13" (1/4) ... [2022-01-10 20:14:14,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2207da2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:14:14, skipping insertion in model container [2022-01-10 20:14:14,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:14:14" (2/4) ... [2022-01-10 20:14:14,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2207da2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:14:14, skipping insertion in model container [2022-01-10 20:14:14,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:14:14" (3/4) ... [2022-01-10 20:14:14,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2207da2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 08:14:14, skipping insertion in model container [2022-01-10 20:14:14,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:14:14" (4/4) ... [2022-01-10 20:14:14,649 INFO L111 eAbstractionObserver]: Analyzing ICFG SpamAssassin-loop.iTransformedIcfg [2022-01-10 20:14:14,652 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 20:14:14,652 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-01-10 20:14:14,688 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 20:14:14,693 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 20:14:14,693 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2022-01-10 20:14:14,701 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 59 states have (on average 1.6610169491525424) internal successors, (98), 75 states have internal predecessors, (98), 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) [2022-01-10 20:14:14,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-10 20:14:14,704 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:14:14,705 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:14:14,705 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 20:14:14,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:14:14,709 INFO L85 PathProgramCache]: Analyzing trace with hash -375578806, now seen corresponding path program 1 times [2022-01-10 20:14:14,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:14:14,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619719573] [2022-01-10 20:14:14,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:14:14,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:14:14,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:14:14,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:14,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:14:14,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619719573] [2022-01-10 20:14:14,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619719573] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:14:14,891 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:14:14,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:14:14,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363607394] [2022-01-10 20:14:14,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:14:14,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:14:14,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:14:14,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:14:14,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:14:14,912 INFO L87 Difference]: Start difference. First operand has 76 states, 59 states have (on average 1.6610169491525424) internal successors, (98), 75 states have internal predecessors, (98), 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 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-01-10 20:14:15,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:14:15,031 INFO L93 Difference]: Finished difference Result 155 states and 202 transitions. [2022-01-10 20:14:15,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:14:15,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2022-01-10 20:14:15,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:14:15,038 INFO L225 Difference]: With dead ends: 155 [2022-01-10 20:14:15,038 INFO L226 Difference]: Without dead ends: 74 [2022-01-10 20:14:15,040 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 [2022-01-10 20:14:15,045 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 13 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:14:15,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 114 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 20:14:15,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-01-10 20:14:15,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 70. [2022-01-10 20:14:15,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 55 states have (on average 1.3272727272727274) internal successors, (73), 69 states have internal predecessors, (73), 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) [2022-01-10 20:14:15,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 73 transitions. [2022-01-10 20:14:15,074 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 73 transitions. Word has length 8 [2022-01-10 20:14:15,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:14:15,074 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 73 transitions. [2022-01-10 20:14:15,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-01-10 20:14:15,074 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 73 transitions. [2022-01-10 20:14:15,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-10 20:14:15,075 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:14:15,075 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:14:15,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 20:14:15,075 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 20:14:15,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:14:15,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1241990956, now seen corresponding path program 1 times [2022-01-10 20:14:15,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:14:15,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423102164] [2022-01-10 20:14:15,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:14:15,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:14:15,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:14:15,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:15,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:14:15,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423102164] [2022-01-10 20:14:15,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423102164] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:14:15,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:14:15,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 20:14:15,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703980737] [2022-01-10 20:14:15,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:14:15,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 20:14:15,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:14:15,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 20:14:15,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 20:14:15,141 INFO L87 Difference]: Start difference. First operand 70 states and 73 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-01-10 20:14:15,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:14:15,271 INFO L93 Difference]: Finished difference Result 77 states and 83 transitions. [2022-01-10 20:14:15,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 20:14:15,272 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2022-01-10 20:14:15,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:14:15,272 INFO L225 Difference]: With dead ends: 77 [2022-01-10 20:14:15,273 INFO L226 Difference]: Without dead ends: 73 [2022-01-10 20:14:15,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:14:15,274 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 43 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:14:15,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 98 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 20:14:15,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-01-10 20:14:15,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 66. [2022-01-10 20:14:15,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 53 states have (on average 1.3018867924528301) internal successors, (69), 65 states have internal predecessors, (69), 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) [2022-01-10 20:14:15,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2022-01-10 20:14:15,284 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 9 [2022-01-10 20:14:15,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:14:15,284 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2022-01-10 20:14:15,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-01-10 20:14:15,284 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2022-01-10 20:14:15,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 20:14:15,285 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:14:15,285 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:14:15,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 20:14:15,285 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 20:14:15,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:14:15,285 INFO L85 PathProgramCache]: Analyzing trace with hash -153940112, now seen corresponding path program 1 times [2022-01-10 20:14:15,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:14:15,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527222529] [2022-01-10 20:14:15,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:14:15,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:14:15,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:14:15,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:15,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:14:15,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527222529] [2022-01-10 20:14:15,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527222529] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:14:15,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:14:15,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 20:14:15,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94103297] [2022-01-10 20:14:15,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:14:15,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 20:14:15,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:14:15,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 20:14:15,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:14:15,356 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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) [2022-01-10 20:14:15,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:14:15,601 INFO L93 Difference]: Finished difference Result 155 states and 167 transitions. [2022-01-10 20:14:15,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 20:14:15,615 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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 10 [2022-01-10 20:14:15,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:14:15,617 INFO L225 Difference]: With dead ends: 155 [2022-01-10 20:14:15,617 INFO L226 Difference]: Without dead ends: 147 [2022-01-10 20:14:15,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 20:14:15,618 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 94 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 20:14:15,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 166 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 20:14:15,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-01-10 20:14:15,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 109. [2022-01-10 20:14:15,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 96 states have (on average 1.28125) internal successors, (123), 108 states have internal predecessors, (123), 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) [2022-01-10 20:14:15,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 123 transitions. [2022-01-10 20:14:15,634 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 123 transitions. Word has length 10 [2022-01-10 20:14:15,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:14:15,635 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 123 transitions. [2022-01-10 20:14:15,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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) [2022-01-10 20:14:15,635 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 123 transitions. [2022-01-10 20:14:15,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-10 20:14:15,635 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:14:15,635 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:14:15,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 20:14:15,636 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 20:14:15,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:14:15,636 INFO L85 PathProgramCache]: Analyzing trace with hash -608127913, now seen corresponding path program 1 times [2022-01-10 20:14:15,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:14:15,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478997368] [2022-01-10 20:14:15,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:14:15,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:14:15,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:14:15,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:15,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:14:15,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478997368] [2022-01-10 20:14:15,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478997368] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:14:15,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:14:15,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 20:14:15,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896908863] [2022-01-10 20:14:15,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:14:15,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 20:14:15,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:14:15,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 20:14:15,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:14:15,737 INFO L87 Difference]: Start difference. First operand 109 states and 123 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2022-01-10 20:14:15,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:14:15,890 INFO L93 Difference]: Finished difference Result 110 states and 124 transitions. [2022-01-10 20:14:15,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 20:14:15,891 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 13 [2022-01-10 20:14:15,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:14:15,892 INFO L225 Difference]: With dead ends: 110 [2022-01-10 20:14:15,892 INFO L226 Difference]: Without dead ends: 106 [2022-01-10 20:14:15,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 20:14:15,893 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 87 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:14:15,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 93 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 20:14:15,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-01-10 20:14:15,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2022-01-10 20:14:15,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 94 states have (on average 1.2446808510638299) internal successors, (117), 104 states have internal predecessors, (117), 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) [2022-01-10 20:14:15,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 117 transitions. [2022-01-10 20:14:15,913 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 117 transitions. Word has length 13 [2022-01-10 20:14:15,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:14:15,913 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 117 transitions. [2022-01-10 20:14:15,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2022-01-10 20:14:15,913 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 117 transitions. [2022-01-10 20:14:15,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-10 20:14:15,914 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:14:15,914 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:14:15,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 20:14:15,914 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 20:14:15,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:14:15,915 INFO L85 PathProgramCache]: Analyzing trace with hash -295331683, now seen corresponding path program 1 times [2022-01-10 20:14:15,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:14:15,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240048581] [2022-01-10 20:14:15,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:14:15,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:14:15,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:14:15,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:15,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:14:15,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240048581] [2022-01-10 20:14:15,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240048581] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:14:15,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:14:15,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 20:14:15,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439747987] [2022-01-10 20:14:15,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:14:15,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 20:14:15,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:14:15,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 20:14:15,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 20:14:15,970 INFO L87 Difference]: Start difference. First operand 105 states and 117 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2022-01-10 20:14:16,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:14:16,061 INFO L93 Difference]: Finished difference Result 157 states and 175 transitions. [2022-01-10 20:14:16,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 20:14:16,062 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2022-01-10 20:14:16,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:14:16,063 INFO L225 Difference]: With dead ends: 157 [2022-01-10 20:14:16,064 INFO L226 Difference]: Without dead ends: 153 [2022-01-10 20:14:16,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:14:16,067 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 34 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:14:16,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 139 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 20:14:16,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-01-10 20:14:16,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 141. [2022-01-10 20:14:16,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 130 states have (on average 1.2307692307692308) internal successors, (160), 140 states have internal predecessors, (160), 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) [2022-01-10 20:14:16,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 160 transitions. [2022-01-10 20:14:16,105 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 160 transitions. Word has length 15 [2022-01-10 20:14:16,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:14:16,106 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 160 transitions. [2022-01-10 20:14:16,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2022-01-10 20:14:16,108 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 160 transitions. [2022-01-10 20:14:16,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-10 20:14:16,113 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:14:16,113 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] [2022-01-10 20:14:16,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 20:14:16,113 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 20:14:16,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:14:16,113 INFO L85 PathProgramCache]: Analyzing trace with hash 159951586, now seen corresponding path program 1 times [2022-01-10 20:14:16,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:14:16,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579585770] [2022-01-10 20:14:16,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:14:16,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:14:16,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:14:16,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:16,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:14:16,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579585770] [2022-01-10 20:14:16,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579585770] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:14:16,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:14:16,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 20:14:16,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952040857] [2022-01-10 20:14:16,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:14:16,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 20:14:16,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:14:16,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 20:14:16,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 20:14:16,188 INFO L87 Difference]: Start difference. First operand 141 states and 160 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2022-01-10 20:14:16,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:14:16,302 INFO L93 Difference]: Finished difference Result 179 states and 199 transitions. [2022-01-10 20:14:16,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 20:14:16,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 21 [2022-01-10 20:14:16,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:14:16,304 INFO L225 Difference]: With dead ends: 179 [2022-01-10 20:14:16,304 INFO L226 Difference]: Without dead ends: 177 [2022-01-10 20:14:16,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:14:16,305 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 27 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:14:16,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 121 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 20:14:16,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-01-10 20:14:16,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 139. [2022-01-10 20:14:16,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 129 states have (on average 1.2170542635658914) internal successors, (157), 138 states have internal predecessors, (157), 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) [2022-01-10 20:14:16,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 157 transitions. [2022-01-10 20:14:16,355 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 157 transitions. Word has length 21 [2022-01-10 20:14:16,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:14:16,355 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 157 transitions. [2022-01-10 20:14:16,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2022-01-10 20:14:16,355 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 157 transitions. [2022-01-10 20:14:16,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-10 20:14:16,356 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:14:16,356 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] [2022-01-10 20:14:16,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 20:14:16,356 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 20:14:16,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:14:16,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1878065032, now seen corresponding path program 1 times [2022-01-10 20:14:16,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:14:16,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847251632] [2022-01-10 20:14:16,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:14:16,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:14:16,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:14:16,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:16,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:14:16,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847251632] [2022-01-10 20:14:16,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847251632] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:14:16,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:14:16,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 20:14:16,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791613035] [2022-01-10 20:14:16,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:14:16,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 20:14:16,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:14:16,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 20:14:16,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-01-10 20:14:16,667 INFO L87 Difference]: Start difference. First operand 139 states and 157 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 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) [2022-01-10 20:14:17,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:14:17,549 INFO L93 Difference]: Finished difference Result 203 states and 221 transitions. [2022-01-10 20:14:17,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 20:14:17,549 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 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 25 [2022-01-10 20:14:17,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:14:17,550 INFO L225 Difference]: With dead ends: 203 [2022-01-10 20:14:17,550 INFO L226 Difference]: Without dead ends: 199 [2022-01-10 20:14:17,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2022-01-10 20:14:17,551 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 229 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 20:14:17,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 279 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 20:14:17,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-01-10 20:14:17,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 149. [2022-01-10 20:14:17,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 139 states have (on average 1.2158273381294964) internal successors, (169), 148 states have internal predecessors, (169), 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) [2022-01-10 20:14:17,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 169 transitions. [2022-01-10 20:14:17,585 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 169 transitions. Word has length 25 [2022-01-10 20:14:17,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:14:17,585 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 169 transitions. [2022-01-10 20:14:17,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 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) [2022-01-10 20:14:17,585 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 169 transitions. [2022-01-10 20:14:17,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-10 20:14:17,586 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:14:17,586 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:14:17,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 20:14:17,586 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 20:14:17,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:14:17,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1809814597, now seen corresponding path program 1 times [2022-01-10 20:14:17,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:14:17,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116683577] [2022-01-10 20:14:17,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:14:17,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:14:17,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:14:17,633 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:17,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:14:17,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116683577] [2022-01-10 20:14:17,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116683577] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 20:14:17,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82576928] [2022-01-10 20:14:17,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:14:17,633 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:14:17,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:14:17,635 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 20:14:17,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 20:14:17,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:14:17,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 20:14:17,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:14:18,021 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:18,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 20:14:18,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82576928] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:14:18,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 20:14:18,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2022-01-10 20:14:18,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125247878] [2022-01-10 20:14:18,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:14:18,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 20:14:18,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:14:18,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 20:14:18,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 20:14:18,022 INFO L87 Difference]: Start difference. First operand 149 states and 169 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2022-01-10 20:14:18,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:14:18,169 INFO L93 Difference]: Finished difference Result 308 states and 347 transitions. [2022-01-10 20:14:18,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 20:14:18,171 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 26 [2022-01-10 20:14:18,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:14:18,172 INFO L225 Difference]: With dead ends: 308 [2022-01-10 20:14:18,172 INFO L226 Difference]: Without dead ends: 169 [2022-01-10 20:14:18,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 20:14:18,173 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 5 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:14:18,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 154 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 20:14:18,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-01-10 20:14:18,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 165. [2022-01-10 20:14:18,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 155 states have (on average 1.1870967741935483) internal successors, (184), 164 states have internal predecessors, (184), 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) [2022-01-10 20:14:18,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 184 transitions. [2022-01-10 20:14:18,210 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 184 transitions. Word has length 26 [2022-01-10 20:14:18,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:14:18,211 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 184 transitions. [2022-01-10 20:14:18,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2022-01-10 20:14:18,211 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 184 transitions. [2022-01-10 20:14:18,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-10 20:14:18,211 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:14:18,211 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] [2022-01-10 20:14:18,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 20:14:18,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:14:18,431 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 20:14:18,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:14:18,431 INFO L85 PathProgramCache]: Analyzing trace with hash 934272939, now seen corresponding path program 1 times [2022-01-10 20:14:18,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:14:18,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586523044] [2022-01-10 20:14:18,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:14:18,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:14:18,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:14:18,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:18,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:14:18,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586523044] [2022-01-10 20:14:18,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586523044] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:14:18,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:14:18,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 20:14:18,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870205782] [2022-01-10 20:14:18,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:14:18,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 20:14:18,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:14:18,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 20:14:18,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:14:18,484 INFO L87 Difference]: Start difference. First operand 165 states and 184 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-01-10 20:14:18,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:14:18,635 INFO L93 Difference]: Finished difference Result 222 states and 240 transitions. [2022-01-10 20:14:18,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 20:14:18,636 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 27 [2022-01-10 20:14:18,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:14:18,637 INFO L225 Difference]: With dead ends: 222 [2022-01-10 20:14:18,637 INFO L226 Difference]: Without dead ends: 208 [2022-01-10 20:14:18,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 20:14:18,637 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 72 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:14:18,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 209 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 20:14:18,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-01-10 20:14:18,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 184. [2022-01-10 20:14:18,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 174 states have (on average 1.1896551724137931) internal successors, (207), 183 states have internal predecessors, (207), 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) [2022-01-10 20:14:18,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 207 transitions. [2022-01-10 20:14:18,669 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 207 transitions. Word has length 27 [2022-01-10 20:14:18,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:14:18,669 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 207 transitions. [2022-01-10 20:14:18,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-01-10 20:14:18,669 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 207 transitions. [2022-01-10 20:14:18,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-10 20:14:18,669 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:14:18,671 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] [2022-01-10 20:14:18,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 20:14:18,671 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 20:14:18,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:14:18,672 INFO L85 PathProgramCache]: Analyzing trace with hash 443921297, now seen corresponding path program 1 times [2022-01-10 20:14:18,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:14:18,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311313227] [2022-01-10 20:14:18,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:14:18,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:14:18,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:14:18,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:18,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:14:18,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311313227] [2022-01-10 20:14:18,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311313227] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:14:18,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:14:18,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 20:14:18,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138703615] [2022-01-10 20:14:18,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:14:18,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 20:14:18,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:14:18,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 20:14:18,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 20:14:18,757 INFO L87 Difference]: Start difference. First operand 184 states and 207 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 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) [2022-01-10 20:14:19,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:14:19,041 INFO L93 Difference]: Finished difference Result 270 states and 290 transitions. [2022-01-10 20:14:19,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 20:14:19,042 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 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 31 [2022-01-10 20:14:19,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:14:19,043 INFO L225 Difference]: With dead ends: 270 [2022-01-10 20:14:19,043 INFO L226 Difference]: Without dead ends: 258 [2022-01-10 20:14:19,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 20:14:19,044 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 109 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 20:14:19,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 357 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 20:14:19,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-01-10 20:14:19,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 217. [2022-01-10 20:14:19,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 207 states have (on average 1.1980676328502415) internal successors, (248), 216 states have internal predecessors, (248), 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) [2022-01-10 20:14:19,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 248 transitions. [2022-01-10 20:14:19,092 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 248 transitions. Word has length 31 [2022-01-10 20:14:19,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:14:19,092 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 248 transitions. [2022-01-10 20:14:19,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 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) [2022-01-10 20:14:19,093 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 248 transitions. [2022-01-10 20:14:19,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-10 20:14:19,096 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:14:19,096 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 20:14:19,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 20:14:19,097 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 20:14:19,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:14:19,097 INFO L85 PathProgramCache]: Analyzing trace with hash 279543484, now seen corresponding path program 1 times [2022-01-10 20:14:19,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:14:19,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509180316] [2022-01-10 20:14:19,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:14:19,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:14:19,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:14:19,160 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:19,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:14:19,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509180316] [2022-01-10 20:14:19,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509180316] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 20:14:19,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794322184] [2022-01-10 20:14:19,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:14:19,161 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:14:19,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:14:19,162 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 20:14:19,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 20:14:19,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:14:19,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-10 20:14:19,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:14:19,941 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:19,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 20:14:20,489 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:20,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794322184] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 20:14:20,489 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 20:14:20,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 17 [2022-01-10 20:14:20,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616777829] [2022-01-10 20:14:20,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 20:14:20,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-10 20:14:20,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:14:20,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-10 20:14:20,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2022-01-10 20:14:20,491 INFO L87 Difference]: Start difference. First operand 217 states and 248 transitions. Second operand has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 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) [2022-01-10 20:14:24,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:14:24,442 INFO L93 Difference]: Finished difference Result 811 states and 951 transitions. [2022-01-10 20:14:24,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-10 20:14:24,442 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 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 37 [2022-01-10 20:14:24,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:14:24,444 INFO L225 Difference]: With dead ends: 811 [2022-01-10 20:14:24,444 INFO L226 Difference]: Without dead ends: 782 [2022-01-10 20:14:24,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=392, Invalid=940, Unknown=0, NotChecked=0, Total=1332 [2022-01-10 20:14:24,445 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 863 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 588 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 1401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 588 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-01-10 20:14:24,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [863 Valid, 298 Invalid, 1401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [588 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-01-10 20:14:24,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2022-01-10 20:14:24,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 481. [2022-01-10 20:14:24,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 472 states have (on average 1.1419491525423728) internal successors, (539), 480 states have internal predecessors, (539), 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) [2022-01-10 20:14:24,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 539 transitions. [2022-01-10 20:14:24,544 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 539 transitions. Word has length 37 [2022-01-10 20:14:24,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:14:24,544 INFO L470 AbstractCegarLoop]: Abstraction has 481 states and 539 transitions. [2022-01-10 20:14:24,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 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) [2022-01-10 20:14:24,545 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 539 transitions. [2022-01-10 20:14:24,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-10 20:14:24,545 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:14:24,545 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 20:14:24,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 20:14:24,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-10 20:14:24,750 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2022-01-10 20:14:24,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:14:24,750 INFO L85 PathProgramCache]: Analyzing trace with hash 807288631, now seen corresponding path program 1 times [2022-01-10 20:14:24,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:14:24,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725628067] [2022-01-10 20:14:24,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:14:24,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:14:24,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:14:25,011 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:25,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:14:25,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725628067] [2022-01-10 20:14:25,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725628067] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 20:14:25,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716865388] [2022-01-10 20:14:25,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:14:25,012 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:14:25,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:14:25,013 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 20:14:25,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 20:14:25,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:14:25,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-10 20:14:25,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:14:40,667 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:14:40,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 20:15:08,912 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:15:08,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716865388] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 20:15:08,913 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 20:15:08,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 11] total 26 [2022-01-10 20:15:08,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359356172] [2022-01-10 20:15:08,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 20:15:08,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-10 20:15:08,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:15:08,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-10 20:15:08,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=497, Unknown=7, NotChecked=0, Total=650 [2022-01-10 20:15:08,914 INFO L87 Difference]: Start difference. First operand 481 states and 539 transitions. Second operand has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 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) [2022-01-10 20:15:10,977 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []