/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/array-examples/relax-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 21:04:24,093 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 21:04:24,095 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 21:04:24,136 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 21:04:24,156 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 21:04:24,157 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 21:04:24,158 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 21:04:24,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 21:04:24,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 21:04:24,159 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 21:04:24,160 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 21:04:24,161 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 21:04:24,162 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 21:04:24,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 21:04:24,166 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 21:04:24,167 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 21:04:24,174 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 21:04:24,182 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 21:04:24,183 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 21:04:24,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 21:04:24,184 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 21:04:24,207 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 21:04:24,207 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 21:04:24,207 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 21:04:24,207 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 21:04:24,208 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 21:04:24,208 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 21:04:24,208 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 21:04:24,209 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 21:04:24,209 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 21:04:24,209 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 21:04:24,209 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 21:04:24,210 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 21:04:24,210 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 21:04:24,210 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 21:04:24,210 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 21:04:24,210 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 21:04:24,210 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 21:04:24,210 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 21:04:24,210 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 21:04:24,210 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 21:04:24,210 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 21:04:24,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 21:04:24,211 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 21:04:24,211 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 21:04:24,211 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 21:04:24,211 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 21:04:24,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 21:04:24,212 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 21:04:24,212 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 21:04:24,212 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 21:04:24,212 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 21:04:24,212 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 21:04:24,213 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 21:04:24,213 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 21:04:24,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 21:04:24,410 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 21:04:24,412 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 21:04:24,413 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 21:04:24,413 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 21:04:24,414 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/relax-2.i [2022-01-10 21:04:24,453 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53bf3ddab/b33fac9859bf4e0385d370f9080d8b43/FLAGac74d7eda [2022-01-10 21:04:24,878 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 21:04:24,878 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/relax-2.i [2022-01-10 21:04:24,889 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53bf3ddab/b33fac9859bf4e0385d370f9080d8b43/FLAGac74d7eda [2022-01-10 21:04:24,898 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53bf3ddab/b33fac9859bf4e0385d370f9080d8b43 [2022-01-10 21:04:24,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 21:04:24,901 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 21:04:24,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 21:04:24,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 21:04:24,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 21:04:24,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:04:24" (1/1) ... [2022-01-10 21:04:24,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@598ebca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:04:24, skipping insertion in model container [2022-01-10 21:04:24,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:04:24" (1/1) ... [2022-01-10 21:04:24,909 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 21:04:24,948 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 21:04:25,096 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/relax-2.i[980,993] [2022-01-10 21:04:25,205 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 21:04:25,212 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 21:04:25,220 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/relax-2.i[980,993] [2022-01-10 21:04:25,243 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 21:04:25,260 INFO L208 MainTranslator]: Completed translation [2022-01-10 21:04:25,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:04:25 WrapperNode [2022-01-10 21:04:25,261 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 21:04:25,261 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 21:04:25,261 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 21:04:25,261 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 21:04:25,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:04:25" (1/1) ... [2022-01-10 21:04:25,276 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:04:25" (1/1) ... [2022-01-10 21:04:25,291 INFO L137 Inliner]: procedures = 123, calls = 26, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 158 [2022-01-10 21:04:25,291 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 21:04:25,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 21:04:25,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 21:04:25,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 21:04:25,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:04:25" (1/1) ... [2022-01-10 21:04:25,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:04:25" (1/1) ... [2022-01-10 21:04:25,301 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:04:25" (1/1) ... [2022-01-10 21:04:25,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:04:25" (1/1) ... [2022-01-10 21:04:25,306 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:04:25" (1/1) ... [2022-01-10 21:04:25,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:04:25" (1/1) ... [2022-01-10 21:04:25,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:04:25" (1/1) ... [2022-01-10 21:04:25,313 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 21:04:25,313 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 21:04:25,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 21:04:25,313 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 21:04:25,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:04:25" (1/1) ... [2022-01-10 21:04:25,318 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 21:04:25,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:04:25,337 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 21:04:25,354 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 21:04:25,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 21:04:25,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 21:04:25,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 21:04:25,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 21:04:25,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 21:04:25,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 21:04:25,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 21:04:25,444 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 21:04:25,445 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 21:04:25,744 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 21:04:25,748 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 21:04:25,748 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-01-10 21:04:25,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:04:25 BoogieIcfgContainer [2022-01-10 21:04:25,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 21:04:25,750 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 21:04:25,750 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 21:04:25,751 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 21:04:25,753 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:04:25" (1/1) ... [2022-01-10 21:04:25,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:04:25 BasicIcfg [2022-01-10 21:04:25,854 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 21:04:25,855 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 21:04:25,855 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 21:04:25,857 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 21:04:25,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 09:04:24" (1/4) ... [2022-01-10 21:04:25,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32dcef34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:04:25, skipping insertion in model container [2022-01-10 21:04:25,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:04:25" (2/4) ... [2022-01-10 21:04:25,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32dcef34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:04:25, skipping insertion in model container [2022-01-10 21:04:25,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:04:25" (3/4) ... [2022-01-10 21:04:25,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32dcef34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 09:04:25, skipping insertion in model container [2022-01-10 21:04:25,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:04:25" (4/4) ... [2022-01-10 21:04:25,859 INFO L111 eAbstractionObserver]: Analyzing ICFG relax-2.iTransformedIcfg [2022-01-10 21:04:25,862 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 21:04:25,862 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-01-10 21:04:25,898 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 21:04:25,903 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 21:04:25,904 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-10 21:04:25,914 INFO L276 IsEmpty]: Start isEmpty. Operand has 49 states, 45 states have (on average 1.6666666666666667) internal successors, (75), 48 states have internal predecessors, (75), 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 21:04:25,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 21:04:25,917 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:04:25,918 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:04:25,918 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:04:25,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:04:25,922 INFO L85 PathProgramCache]: Analyzing trace with hash 239891789, now seen corresponding path program 1 times [2022-01-10 21:04:25,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:04:25,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084101006] [2022-01-10 21:04:25,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:04:25,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:04:26,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:04:26,097 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 21:04:26,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:04:26,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084101006] [2022-01-10 21:04:26,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084101006] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:04:26,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:04:26,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 21:04:26,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160020435] [2022-01-10 21:04:26,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:04:26,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 21:04:26,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:04:26,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 21:04:26,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 21:04:26,134 INFO L87 Difference]: Start difference. First operand has 49 states, 45 states have (on average 1.6666666666666667) internal successors, (75), 48 states have internal predecessors, (75), 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 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 21:04:26,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:04:26,153 INFO L93 Difference]: Finished difference Result 94 states and 144 transitions. [2022-01-10 21:04:26,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 21:04:26,155 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2022-01-10 21:04:26,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:04:26,170 INFO L225 Difference]: With dead ends: 94 [2022-01-10 21:04:26,170 INFO L226 Difference]: Without dead ends: 44 [2022-01-10 21:04:26,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 21:04:26,175 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 21:04:26,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 21:04:26,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-01-10 21:04:26,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-01-10 21:04:26,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 41 states have (on average 1.4146341463414633) internal successors, (58), 43 states have internal predecessors, (58), 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 21:04:26,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 58 transitions. [2022-01-10 21:04:26,201 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 58 transitions. Word has length 11 [2022-01-10 21:04:26,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:04:26,202 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 58 transitions. [2022-01-10 21:04:26,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 21:04:26,203 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 58 transitions. [2022-01-10 21:04:26,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 21:04:26,204 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:04:26,204 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:04:26,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 21:04:26,204 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:04:26,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:04:26,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1127395470, now seen corresponding path program 1 times [2022-01-10 21:04:26,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:04:26,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476025653] [2022-01-10 21:04:26,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:04:26,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:04:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:04:26,340 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 21:04:26,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:04:26,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476025653] [2022-01-10 21:04:26,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476025653] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:04:26,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:04:26,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 21:04:26,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663322193] [2022-01-10 21:04:26,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:04:26,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 21:04:26,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:04:26,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 21:04:26,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 21:04:26,344 INFO L87 Difference]: Start difference. First operand 44 states and 58 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 21:04:26,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:04:26,391 INFO L93 Difference]: Finished difference Result 74 states and 95 transitions. [2022-01-10 21:04:26,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 21:04:26,391 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2022-01-10 21:04:26,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:04:26,392 INFO L225 Difference]: With dead ends: 74 [2022-01-10 21:04:26,392 INFO L226 Difference]: Without dead ends: 55 [2022-01-10 21:04:26,397 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 21:04:26,397 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 12 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 21:04:26,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 162 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 21:04:26,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-01-10 21:04:26,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 46. [2022-01-10 21:04:26,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 45 states have internal predecessors, (60), 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 21:04:26,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2022-01-10 21:04:26,413 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 11 [2022-01-10 21:04:26,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:04:26,413 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2022-01-10 21:04:26,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 21:04:26,413 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2022-01-10 21:04:26,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-10 21:04:26,413 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:04:26,414 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:04:26,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 21:04:26,414 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:04:26,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:04:26,414 INFO L85 PathProgramCache]: Analyzing trace with hash 2042517044, now seen corresponding path program 1 times [2022-01-10 21:04:26,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:04:26,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478332773] [2022-01-10 21:04:26,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:04:26,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:04:26,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:04:26,574 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 21:04:26,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:04:26,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478332773] [2022-01-10 21:04:26,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478332773] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:04:26,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:04:26,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 21:04:26,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299691957] [2022-01-10 21:04:26,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:04:26,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 21:04:26,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:04:26,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 21:04:26,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 21:04:26,576 INFO L87 Difference]: Start difference. First operand 46 states and 60 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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 21:04:26,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:04:26,772 INFO L93 Difference]: Finished difference Result 57 states and 73 transitions. [2022-01-10 21:04:26,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 21:04:26,772 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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 21:04:26,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:04:26,773 INFO L225 Difference]: With dead ends: 57 [2022-01-10 21:04:26,773 INFO L226 Difference]: Without dead ends: 55 [2022-01-10 21:04:26,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-01-10 21:04:26,774 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 117 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 21:04:26,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 98 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 21:04:26,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-01-10 21:04:26,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 44. [2022-01-10 21:04:26,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 42 states have (on average 1.380952380952381) internal successors, (58), 43 states have internal predecessors, (58), 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 21:04:26,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 58 transitions. [2022-01-10 21:04:26,783 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 58 transitions. Word has length 13 [2022-01-10 21:04:26,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:04:26,783 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 58 transitions. [2022-01-10 21:04:26,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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 21:04:26,783 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 58 transitions. [2022-01-10 21:04:26,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-10 21:04:26,784 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:04:26,784 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:04:26,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 21:04:26,784 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:04:26,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:04:26,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1260367195, now seen corresponding path program 1 times [2022-01-10 21:04:26,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:04:26,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859852855] [2022-01-10 21:04:26,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:04:26,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:04:26,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:04:26,878 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 21:04:26,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:04:26,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859852855] [2022-01-10 21:04:26,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859852855] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:04:26,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:04:26,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 21:04:26,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980034618] [2022-01-10 21:04:26,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:04:26,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 21:04:26,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:04:26,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 21:04:26,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 21:04:26,882 INFO L87 Difference]: Start difference. First operand 44 states and 58 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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 21:04:26,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:04:26,966 INFO L93 Difference]: Finished difference Result 102 states and 135 transitions. [2022-01-10 21:04:26,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 21:04:26,966 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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 21:04:26,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:04:26,968 INFO L225 Difference]: With dead ends: 102 [2022-01-10 21:04:26,968 INFO L226 Difference]: Without dead ends: 62 [2022-01-10 21:04:26,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 21:04:26,975 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 58 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 21:04:26,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 184 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 21:04:26,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-01-10 21:04:26,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 57. [2022-01-10 21:04:26,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 55 states have (on average 1.3272727272727274) internal successors, (73), 56 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 21:04:26,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 73 transitions. [2022-01-10 21:04:26,984 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 73 transitions. Word has length 15 [2022-01-10 21:04:26,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:04:26,984 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 73 transitions. [2022-01-10 21:04:26,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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 21:04:26,985 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 73 transitions. [2022-01-10 21:04:26,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-10 21:04:26,985 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:04:26,985 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:04:26,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 21:04:26,986 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:04:26,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:04:26,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1651803232, now seen corresponding path program 1 times [2022-01-10 21:04:26,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:04:26,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49877063] [2022-01-10 21:04:26,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:04:26,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:04:27,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:04:27,037 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 21:04:27,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:04:27,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49877063] [2022-01-10 21:04:27,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49877063] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:04:27,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:04:27,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 21:04:27,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458557051] [2022-01-10 21:04:27,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:04:27,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 21:04:27,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:04:27,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 21:04:27,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 21:04:27,039 INFO L87 Difference]: Start difference. First operand 57 states and 73 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 21:04:27,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:04:27,061 INFO L93 Difference]: Finished difference Result 66 states and 84 transitions. [2022-01-10 21:04:27,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 21:04:27,061 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2022-01-10 21:04:27,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:04:27,062 INFO L225 Difference]: With dead ends: 66 [2022-01-10 21:04:27,062 INFO L226 Difference]: Without dead ends: 45 [2022-01-10 21:04:27,063 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 21:04:27,064 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 22 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 21:04:27,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 134 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 21:04:27,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-01-10 21:04:27,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-01-10 21:04:27,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 44 states have internal predecessors, (58), 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 21:04:27,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 58 transitions. [2022-01-10 21:04:27,074 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 58 transitions. Word has length 17 [2022-01-10 21:04:27,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:04:27,076 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 58 transitions. [2022-01-10 21:04:27,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 21:04:27,079 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 58 transitions. [2022-01-10 21:04:27,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-10 21:04:27,080 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:04:27,080 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:04:27,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 21:04:27,080 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:04:27,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:04:27,081 INFO L85 PathProgramCache]: Analyzing trace with hash -158475015, now seen corresponding path program 1 times [2022-01-10 21:04:27,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:04:27,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671514030] [2022-01-10 21:04:27,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:04:27,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:04:27,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:04:27,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 21:04:27,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:04:27,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671514030] [2022-01-10 21:04:27,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671514030] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:04:27,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:04:27,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 21:04:27,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302257750] [2022-01-10 21:04:27,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:04:27,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 21:04:27,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:04:27,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 21:04:27,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 21:04:27,202 INFO L87 Difference]: Start difference. First operand 45 states and 58 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 21:04:27,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:04:27,261 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2022-01-10 21:04:27,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 21:04:27,261 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2022-01-10 21:04:27,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:04:27,262 INFO L225 Difference]: With dead ends: 56 [2022-01-10 21:04:27,262 INFO L226 Difference]: Without dead ends: 45 [2022-01-10 21:04:27,262 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 21:04:27,263 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 48 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 21:04:27,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 80 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 21:04:27,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-01-10 21:04:27,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-01-10 21:04:27,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 43 states have (on average 1.3255813953488371) internal successors, (57), 44 states have internal predecessors, (57), 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 21:04:27,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2022-01-10 21:04:27,278 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 17 [2022-01-10 21:04:27,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:04:27,278 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2022-01-10 21:04:27,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 21:04:27,279 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2022-01-10 21:04:27,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 21:04:27,279 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:04:27,279 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:04:27,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 21:04:27,279 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:04:27,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:04:27,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1456496926, now seen corresponding path program 1 times [2022-01-10 21:04:27,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:04:27,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010706449] [2022-01-10 21:04:27,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:04:27,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:04:27,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:04:27,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 21:04:27,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:04:27,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010706449] [2022-01-10 21:04:27,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010706449] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:04:27,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:04:27,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 21:04:27,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788720254] [2022-01-10 21:04:27,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:04:27,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 21:04:27,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:04:27,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 21:04:27,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:04:27,314 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 21:04:27,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:04:27,330 INFO L93 Difference]: Finished difference Result 80 states and 102 transitions. [2022-01-10 21:04:27,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 21:04:27,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 19 [2022-01-10 21:04:27,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:04:27,331 INFO L225 Difference]: With dead ends: 80 [2022-01-10 21:04:27,331 INFO L226 Difference]: Without dead ends: 69 [2022-01-10 21:04:27,332 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 21:04:27,332 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 28 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 21:04:27,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 100 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 21:04:27,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-01-10 21:04:27,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 50. [2022-01-10 21:04:27,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 48 states have (on average 1.3333333333333333) internal successors, (64), 49 states have internal predecessors, (64), 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 21:04:27,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2022-01-10 21:04:27,337 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 19 [2022-01-10 21:04:27,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:04:27,337 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2022-01-10 21:04:27,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 21:04:27,337 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2022-01-10 21:04:27,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-10 21:04:27,337 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:04:27,337 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] [2022-01-10 21:04:27,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 21:04:27,338 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:04:27,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:04:27,338 INFO L85 PathProgramCache]: Analyzing trace with hash -30074780, now seen corresponding path program 1 times [2022-01-10 21:04:27,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:04:27,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735150612] [2022-01-10 21:04:27,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:04:27,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:04:27,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:04:27,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 21:04:27,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:04:27,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735150612] [2022-01-10 21:04:27,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735150612] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:04:27,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:04:27,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 21:04:27,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915261305] [2022-01-10 21:04:27,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:04:27,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 21:04:27,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:04:27,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 21:04:27,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-10 21:04:27,466 INFO L87 Difference]: Start difference. First operand 50 states and 64 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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 21:04:27,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:04:27,636 INFO L93 Difference]: Finished difference Result 78 states and 98 transitions. [2022-01-10 21:04:27,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 21:04:27,636 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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 23 [2022-01-10 21:04:27,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:04:27,637 INFO L225 Difference]: With dead ends: 78 [2022-01-10 21:04:27,637 INFO L226 Difference]: Without dead ends: 55 [2022-01-10 21:04:27,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-01-10 21:04:27,637 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 78 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 21:04:27,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 194 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 21:04:27,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-01-10 21:04:27,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51. [2022-01-10 21:04:27,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 49 states have (on average 1.3265306122448979) internal successors, (65), 50 states have internal predecessors, (65), 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 21:04:27,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 65 transitions. [2022-01-10 21:04:27,641 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 65 transitions. Word has length 23 [2022-01-10 21:04:27,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:04:27,642 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 65 transitions. [2022-01-10 21:04:27,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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 21:04:27,642 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 65 transitions. [2022-01-10 21:04:27,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-10 21:04:27,642 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:04:27,642 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] [2022-01-10 21:04:27,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 21:04:27,643 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:04:27,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:04:27,643 INFO L85 PathProgramCache]: Analyzing trace with hash -827641083, now seen corresponding path program 1 times [2022-01-10 21:04:27,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:04:27,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302303083] [2022-01-10 21:04:27,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:04:27,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:04:27,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:04:27,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 21:04:27,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:04:27,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302303083] [2022-01-10 21:04:27,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302303083] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 21:04:27,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458170763] [2022-01-10 21:04:27,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:04:27,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:04:27,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:04:27,878 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 21:04:27,895 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 21:04:27,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:04:27,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 21:04:27,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 21:04:28,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 21:04:28,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 21:04:28,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458170763] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:04:28,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 21:04:28,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-01-10 21:04:28,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694707443] [2022-01-10 21:04:28,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:04:28,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 21:04:28,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:04:28,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 21:04:28,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-01-10 21:04:28,130 INFO L87 Difference]: Start difference. First operand 51 states and 65 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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 21:04:28,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:04:28,181 INFO L93 Difference]: Finished difference Result 96 states and 123 transitions. [2022-01-10 21:04:28,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 21:04:28,182 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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 23 [2022-01-10 21:04:28,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:04:28,182 INFO L225 Difference]: With dead ends: 96 [2022-01-10 21:04:28,182 INFO L226 Difference]: Without dead ends: 53 [2022-01-10 21:04:28,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-01-10 21:04:28,184 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 7 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 21:04:28,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 187 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 21:04:28,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-01-10 21:04:28,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2022-01-10 21:04:28,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 50 states have (on average 1.32) internal successors, (66), 51 states have internal predecessors, (66), 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 21:04:28,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2022-01-10 21:04:28,191 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 23 [2022-01-10 21:04:28,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:04:28,191 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2022-01-10 21:04:28,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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 21:04:28,192 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2022-01-10 21:04:28,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-10 21:04:28,192 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:04:28,192 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 21:04:28,211 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 21:04:28,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:04:28,405 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:04:28,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:04:28,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1209683965, now seen corresponding path program 1 times [2022-01-10 21:04:28,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:04:28,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663612574] [2022-01-10 21:04:28,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:04:28,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:04:28,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:04:28,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 21:04:28,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:04:28,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663612574] [2022-01-10 21:04:28,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663612574] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 21:04:28,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578175880] [2022-01-10 21:04:28,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:04:28,520 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:04:28,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:04:28,521 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 21:04:28,522 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 21:04:28,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:04:28,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-10 21:04:28,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 21:04:28,744 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 21:04:28,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 21:04:29,067 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 21:04:29,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578175880] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 21:04:29,067 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 21:04:29,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2022-01-10 21:04:29,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717418805] [2022-01-10 21:04:29,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 21:04:29,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-10 21:04:29,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:04:29,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-10 21:04:29,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-01-10 21:04:29,069 INFO L87 Difference]: Start difference. First operand 52 states and 66 transitions. Second operand has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 17 states have internal predecessors, (59), 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 21:04:29,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:04:29,720 INFO L93 Difference]: Finished difference Result 159 states and 201 transitions. [2022-01-10 21:04:29,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-10 21:04:29,721 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 17 states have internal predecessors, (59), 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 21:04:29,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:04:29,722 INFO L225 Difference]: With dead ends: 159 [2022-01-10 21:04:29,722 INFO L226 Difference]: Without dead ends: 134 [2022-01-10 21:04:29,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=228, Invalid=828, Unknown=0, NotChecked=0, Total=1056 [2022-01-10 21:04:29,723 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 709 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 21:04:29,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [709 Valid, 477 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 21:04:29,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-01-10 21:04:29,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 92. [2022-01-10 21:04:29,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 90 states have (on average 1.3) internal successors, (117), 91 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 21:04:29,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 117 transitions. [2022-01-10 21:04:29,736 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 117 transitions. Word has length 25 [2022-01-10 21:04:29,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:04:29,736 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 117 transitions. [2022-01-10 21:04:29,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 17 states have internal predecessors, (59), 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 21:04:29,736 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 117 transitions. [2022-01-10 21:04:29,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-10 21:04:29,740 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:04:29,740 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] [2022-01-10 21:04:29,759 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 21:04:29,947 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,SelfDestructingSolverStorable9 [2022-01-10 21:04:29,947 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:04:29,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:04:29,948 INFO L85 PathProgramCache]: Analyzing trace with hash -747501290, now seen corresponding path program 1 times [2022-01-10 21:04:29,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:04:29,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360545302] [2022-01-10 21:04:29,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:04:29,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:04:29,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:04:30,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 21:04:30,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:04:30,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360545302] [2022-01-10 21:04:30,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360545302] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 21:04:30,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971125903] [2022-01-10 21:04:30,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:04:30,101 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:04:30,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:04:30,102 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 21:04:30,103 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 21:04:30,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:04:30,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 21:04:30,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 21:04:30,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 21:04:30,277 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 21:04:30,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971125903] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:04:30,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 21:04:30,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 9 [2022-01-10 21:04:30,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541871553] [2022-01-10 21:04:30,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:04:30,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 21:04:30,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:04:30,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 21:04:30,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 21:04:30,278 INFO L87 Difference]: Start difference. First operand 92 states and 117 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 21:04:30,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:04:30,315 INFO L93 Difference]: Finished difference Result 114 states and 145 transitions. [2022-01-10 21:04:30,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 21:04:30,315 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 28 [2022-01-10 21:04:30,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:04:30,316 INFO L225 Difference]: With dead ends: 114 [2022-01-10 21:04:30,316 INFO L226 Difference]: Without dead ends: 101 [2022-01-10 21:04:30,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 21:04:30,316 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 27 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 21:04:30,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 124 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 21:04:30,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-01-10 21:04:30,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 96. [2022-01-10 21:04:30,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 94 states have (on average 1.3085106382978724) internal successors, (123), 95 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 21:04:30,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 123 transitions. [2022-01-10 21:04:30,326 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 123 transitions. Word has length 28 [2022-01-10 21:04:30,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:04:30,326 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 123 transitions. [2022-01-10 21:04:30,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 21:04:30,327 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 123 transitions. [2022-01-10 21:04:30,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-10 21:04:30,327 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:04:30,327 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 21:04:30,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-10 21:04:30,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:04:30,544 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:04:30,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:04:30,545 INFO L85 PathProgramCache]: Analyzing trace with hash -691972729, now seen corresponding path program 1 times [2022-01-10 21:04:30,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:04:30,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827973756] [2022-01-10 21:04:30,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:04:30,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:04:30,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:04:30,653 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 21:04:30,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:04:30,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827973756] [2022-01-10 21:04:30,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827973756] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 21:04:30,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342542718] [2022-01-10 21:04:30,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:04:30,654 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:04:30,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:04:30,668 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 21:04:30,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-10 21:04:30,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:04:30,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 21:04:30,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 21:04:30,912 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 21:04:30,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 21:04:31,090 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 21:04:31,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342542718] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 21:04:31,090 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 21:04:31,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2022-01-10 21:04:31,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578655378] [2022-01-10 21:04:31,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 21:04:31,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-10 21:04:31,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:04:31,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-10 21:04:31,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-01-10 21:04:31,115 INFO L87 Difference]: Start difference. First operand 96 states and 123 transitions. Second operand has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 states have internal predecessors, (54), 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 21:04:31,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:04:31,567 INFO L93 Difference]: Finished difference Result 283 states and 360 transitions. [2022-01-10 21:04:31,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-10 21:04:31,579 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 states have internal predecessors, (54), 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 29 [2022-01-10 21:04:31,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:04:31,580 INFO L225 Difference]: With dead ends: 283 [2022-01-10 21:04:31,580 INFO L226 Difference]: Without dead ends: 208 [2022-01-10 21:04:31,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=197, Invalid=859, Unknown=0, NotChecked=0, Total=1056 [2022-01-10 21:04:31,581 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 612 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 21:04:31,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [612 Valid, 524 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 21:04:31,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-01-10 21:04:31,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 95. [2022-01-10 21:04:31,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 93 states have (on average 1.2688172043010753) internal successors, (118), 94 states have internal predecessors, (118), 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 21:04:31,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 118 transitions. [2022-01-10 21:04:31,613 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 118 transitions. Word has length 29 [2022-01-10 21:04:31,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:04:31,614 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 118 transitions. [2022-01-10 21:04:31,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 states have internal predecessors, (54), 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 21:04:31,614 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 118 transitions. [2022-01-10 21:04:31,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-10 21:04:31,614 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:04:31,614 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 21:04:31,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-10 21:04:31,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:04:31,815 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:04:31,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:04:31,816 INFO L85 PathProgramCache]: Analyzing trace with hash 447055117, now seen corresponding path program 1 times [2022-01-10 21:04:31,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:04:31,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845848017] [2022-01-10 21:04:31,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:04:31,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:04:31,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:04:31,880 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 21:04:31,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:04:31,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845848017] [2022-01-10 21:04:31,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845848017] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 21:04:31,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065550953] [2022-01-10 21:04:31,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:04:31,881 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:04:31,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:04:31,882 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 21:04:31,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-10 21:04:32,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:04:32,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 21:04:32,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 21:04:32,113 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 21:04:32,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 21:04:32,160 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 21:04:32,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065550953] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 21:04:32,160 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 21:04:32,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2022-01-10 21:04:32,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687274923] [2022-01-10 21:04:32,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 21:04:32,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 21:04:32,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:04:32,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 21:04:32,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 21:04:32,161 INFO L87 Difference]: Start difference. First operand 95 states and 118 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 21:04:32,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:04:32,304 INFO L93 Difference]: Finished difference Result 161 states and 211 transitions. [2022-01-10 21:04:32,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 21:04:32,305 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 30 [2022-01-10 21:04:32,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:04:32,305 INFO L225 Difference]: With dead ends: 161 [2022-01-10 21:04:32,306 INFO L226 Difference]: Without dead ends: 144 [2022-01-10 21:04:32,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 53 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2022-01-10 21:04:32,306 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 95 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 21:04:32,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 280 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 21:04:32,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-01-10 21:04:32,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 129. [2022-01-10 21:04:32,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 127 states have (on average 1.31496062992126) internal successors, (167), 128 states have internal predecessors, (167), 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 21:04:32,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 167 transitions. [2022-01-10 21:04:32,322 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 167 transitions. Word has length 30 [2022-01-10 21:04:32,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:04:32,322 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 167 transitions. [2022-01-10 21:04:32,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 21:04:32,322 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 167 transitions. [2022-01-10 21:04:32,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-10 21:04:32,322 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:04:32,322 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 21:04:32,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-10 21:04:32,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-01-10 21:04:32,531 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:04:32,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:04:32,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1334558798, now seen corresponding path program 1 times [2022-01-10 21:04:32,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:04:32,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944567531] [2022-01-10 21:04:32,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:04:32,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:04:32,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:04:33,780 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 21:04:33,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:04:33,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944567531] [2022-01-10 21:04:33,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944567531] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 21:04:33,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261167452] [2022-01-10 21:04:33,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:04:33,781 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:04:33,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:04:33,782 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 21:04:33,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-10 21:04:34,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:04:34,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 59 conjunts are in the unsatisfiable core [2022-01-10 21:04:34,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 21:04:34,339 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2022-01-10 21:04:34,966 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 21:04:34,968 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 21:04:34,972 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 21:04:34,984 INFO L353 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2022-01-10 21:04:34,984 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 96 treesize of output 21 [2022-01-10 21:04:35,018 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 21:04:35,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 21:04:39,884 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 21:04:39,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261167452] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 21:04:39,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-10 21:04:39,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [15, 16] total 34 [2022-01-10 21:04:39,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943496089] [2022-01-10 21:04:39,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:04:39,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 21:04:39,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:04:39,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 21:04:39,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1005, Unknown=2, NotChecked=0, Total=1122 [2022-01-10 21:04:39,886 INFO L87 Difference]: Start difference. First operand 129 states and 167 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 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 21:04:42,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:04:42,200 INFO L93 Difference]: Finished difference Result 223 states and 293 transitions. [2022-01-10 21:04:42,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 21:04:42,201 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 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 30 [2022-01-10 21:04:42,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:04:42,201 INFO L225 Difference]: With dead ends: 223 [2022-01-10 21:04:42,202 INFO L226 Difference]: Without dead ends: 177 [2022-01-10 21:04:42,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=132, Invalid=1126, Unknown=2, NotChecked=0, Total=1260 [2022-01-10 21:04:42,204 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 44 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 21:04:42,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 368 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 54 Unchecked, 0.0s Time] [2022-01-10 21:04:42,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-01-10 21:04:42,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 146. [2022-01-10 21:04:42,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 144 states have (on average 1.3125) internal successors, (189), 145 states have internal predecessors, (189), 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 21:04:42,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 189 transitions. [2022-01-10 21:04:42,222 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 189 transitions. Word has length 30 [2022-01-10 21:04:42,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:04:42,222 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 189 transitions. [2022-01-10 21:04:42,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 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 21:04:42,222 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 189 transitions. [2022-01-10 21:04:42,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-10 21:04:42,222 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:04:42,223 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:04:42,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-10 21:04:42,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:04:42,434 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:04:42,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:04:42,434 INFO L85 PathProgramCache]: Analyzing trace with hash 818053401, now seen corresponding path program 1 times [2022-01-10 21:04:42,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:04:42,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590074902] [2022-01-10 21:04:42,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:04:42,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:04:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:04:42,579 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 21:04:42,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:04:42,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590074902] [2022-01-10 21:04:42,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590074902] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 21:04:42,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427006112] [2022-01-10 21:04:42,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:04:42,579 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:04:42,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:04:42,581 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 21:04:42,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-10 21:04:42,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:04:42,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 21:04:42,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 21:04:42,846 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 21:04:42,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 21:04:43,060 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 21:04:43,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427006112] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 21:04:43,061 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 21:04:43,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 19 [2022-01-10 21:04:43,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925960590] [2022-01-10 21:04:43,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 21:04:43,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-10 21:04:43,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:04:43,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-10 21:04:43,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-01-10 21:04:43,062 INFO L87 Difference]: Start difference. First operand 146 states and 189 transitions. Second operand has 19 states, 19 states have (on average 3.8421052631578947) internal successors, (73), 19 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 21:04:43,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:04:43,750 INFO L93 Difference]: Finished difference Result 265 states and 331 transitions. [2022-01-10 21:04:43,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-10 21:04:43,750 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.8421052631578947) internal successors, (73), 19 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) Word has length 33 [2022-01-10 21:04:43,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:04:43,751 INFO L225 Difference]: With dead ends: 265 [2022-01-10 21:04:43,751 INFO L226 Difference]: Without dead ends: 195 [2022-01-10 21:04:43,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 58 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=284, Invalid=1198, Unknown=0, NotChecked=0, Total=1482 [2022-01-10 21:04:43,752 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 326 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 21:04:43,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 495 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 21:04:43,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-01-10 21:04:43,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 145. [2022-01-10 21:04:43,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 143 states have (on average 1.3216783216783217) internal successors, (189), 144 states have internal predecessors, (189), 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 21:04:43,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 189 transitions. [2022-01-10 21:04:43,769 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 189 transitions. Word has length 33 [2022-01-10 21:04:43,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:04:43,769 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 189 transitions. [2022-01-10 21:04:43,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.8421052631578947) internal successors, (73), 19 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 21:04:43,769 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 189 transitions. [2022-01-10 21:04:43,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-10 21:04:43,770 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:04:43,770 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] [2022-01-10 21:04:43,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-01-10 21:04:43,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:04:43,985 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:04:43,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:04:43,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1973735331, now seen corresponding path program 2 times [2022-01-10 21:04:43,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:04:43,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081184610] [2022-01-10 21:04:43,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:04:43,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:04:44,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:04:44,167 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-10 21:04:44,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:04:44,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081184610] [2022-01-10 21:04:44,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081184610] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 21:04:44,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492671374] [2022-01-10 21:04:44,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 21:04:44,168 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:04:44,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:04:44,169 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 21:04:44,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-10 21:04:44,485 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 21:04:44,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 21:04:44,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-10 21:04:44,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 21:04:44,619 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-10 21:04:44,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 21:04:44,823 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-10 21:04:44,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492671374] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 21:04:44,823 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 21:04:44,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 16 [2022-01-10 21:04:44,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297034693] [2022-01-10 21:04:44,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 21:04:44,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 21:04:44,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:04:44,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 21:04:44,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-01-10 21:04:44,825 INFO L87 Difference]: Start difference. First operand 145 states and 189 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 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 21:04:45,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:04:45,365 INFO L93 Difference]: Finished difference Result 405 states and 522 transitions. [2022-01-10 21:04:45,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 21:04:45,365 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 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 33 [2022-01-10 21:04:45,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:04:45,366 INFO L225 Difference]: With dead ends: 405 [2022-01-10 21:04:45,366 INFO L226 Difference]: Without dead ends: 399 [2022-01-10 21:04:45,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 54 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=192, Invalid=620, Unknown=0, NotChecked=0, Total=812 [2022-01-10 21:04:45,367 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 710 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 21:04:45,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [710 Valid, 393 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 21:04:45,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2022-01-10 21:04:45,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 150. [2022-01-10 21:04:45,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 148 states have (on average 1.3243243243243243) internal successors, (196), 149 states have internal predecessors, (196), 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 21:04:45,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 196 transitions. [2022-01-10 21:04:45,392 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 196 transitions. Word has length 33 [2022-01-10 21:04:45,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:04:45,392 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 196 transitions. [2022-01-10 21:04:45,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 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 21:04:45,392 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 196 transitions. [2022-01-10 21:04:45,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-10 21:04:45,393 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:04:45,393 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] [2022-01-10 21:04:45,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-10 21:04:45,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-01-10 21:04:45,598 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:04:45,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:04:45,598 INFO L85 PathProgramCache]: Analyzing trace with hash -2107504959, now seen corresponding path program 1 times [2022-01-10 21:04:45,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:04:45,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30130838] [2022-01-10 21:04:45,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:04:45,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:04:45,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:04:45,767 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 21:04:45,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:04:45,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30130838] [2022-01-10 21:04:45,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30130838] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 21:04:45,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573739021] [2022-01-10 21:04:45,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:04:45,768 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:04:45,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:04:45,769 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 21:04:45,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-10 21:04:45,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:04:45,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-10 21:04:45,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 21:04:46,041 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 21:04:46,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 21:04:51,364 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 21:04:51,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573739021] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 21:04:51,365 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 21:04:51,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 20 [2022-01-10 21:04:51,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241079815] [2022-01-10 21:04:51,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 21:04:51,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-10 21:04:51,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:04:51,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-10 21:04:51,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2022-01-10 21:04:51,366 INFO L87 Difference]: Start difference. First operand 150 states and 196 transitions. Second operand has 20 states, 20 states have (on average 3.45) internal successors, (69), 20 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 21:04:51,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:04:51,908 INFO L93 Difference]: Finished difference Result 327 states and 427 transitions. [2022-01-10 21:04:51,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-10 21:04:51,908 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.45) internal successors, (69), 20 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) Word has length 35 [2022-01-10 21:04:51,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:04:51,909 INFO L225 Difference]: With dead ends: 327 [2022-01-10 21:04:51,909 INFO L226 Difference]: Without dead ends: 322 [2022-01-10 21:04:51,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 57 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=262, Invalid=860, Unknown=0, NotChecked=0, Total=1122 [2022-01-10 21:04:51,910 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 428 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 21:04:51,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [428 Valid, 741 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 361 Invalid, 0 Unknown, 58 Unchecked, 0.3s Time] [2022-01-10 21:04:51,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-01-10 21:04:51,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 153. [2022-01-10 21:04:51,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 151 states have (on average 1.3245033112582782) internal successors, (200), 152 states have internal predecessors, (200), 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 21:04:51,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 200 transitions. [2022-01-10 21:04:51,936 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 200 transitions. Word has length 35 [2022-01-10 21:04:51,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:04:51,936 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 200 transitions. [2022-01-10 21:04:51,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.45) internal successors, (69), 20 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 21:04:51,936 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 200 transitions. [2022-01-10 21:04:51,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-10 21:04:51,937 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:04:51,937 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] [2022-01-10 21:04:51,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-10 21:04:52,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-01-10 21:04:52,153 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:04:52,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:04:52,154 INFO L85 PathProgramCache]: Analyzing trace with hash -647377056, now seen corresponding path program 1 times [2022-01-10 21:04:52,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:04:52,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990129156] [2022-01-10 21:04:52,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:04:52,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:04:52,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:04:52,274 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 21:04:52,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:04:52,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990129156] [2022-01-10 21:04:52,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990129156] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 21:04:52,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197283722] [2022-01-10 21:04:52,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:04:52,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:04:52,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:04:52,276 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 21:04:52,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-10 21:04:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:04:52,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-10 21:04:52,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 21:04:52,551 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 21:04:52,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 21:04:52,700 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 21:04:52,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197283722] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 21:04:52,701 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 21:04:52,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 13 [2022-01-10 21:04:52,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603449530] [2022-01-10 21:04:52,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 21:04:52,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-10 21:04:52,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:04:52,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-10 21:04:52,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-01-10 21:04:52,702 INFO L87 Difference]: Start difference. First operand 153 states and 200 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 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 21:04:52,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:04:52,980 INFO L93 Difference]: Finished difference Result 197 states and 252 transitions. [2022-01-10 21:04:52,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 21:04:52,981 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 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 36 [2022-01-10 21:04:52,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:04:52,982 INFO L225 Difference]: With dead ends: 197 [2022-01-10 21:04:52,982 INFO L226 Difference]: Without dead ends: 162 [2022-01-10 21:04:52,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 61 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-01-10 21:04:52,982 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 70 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 21:04:52,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 365 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 21:04:52,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-01-10 21:04:53,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 136. [2022-01-10 21:04:53,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 134 states have (on average 1.328358208955224) internal successors, (178), 135 states have internal predecessors, (178), 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 21:04:53,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 178 transitions. [2022-01-10 21:04:53,005 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 178 transitions. Word has length 36 [2022-01-10 21:04:53,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:04:53,005 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 178 transitions. [2022-01-10 21:04:53,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 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 21:04:53,005 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 178 transitions. [2022-01-10 21:04:53,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-10 21:04:53,006 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:04:53,006 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:04:53,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-10 21:04:53,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-01-10 21:04:53,206 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:04:53,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:04:53,207 INFO L85 PathProgramCache]: Analyzing trace with hash 682529962, now seen corresponding path program 1 times [2022-01-10 21:04:53,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:04:53,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177105759] [2022-01-10 21:04:53,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:04:53,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:04:53,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat