/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_BITWISE.epf -i ../../../trunk/examples/svcomp/list-simple/dll2n_append_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 11:58:17,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 11:58:17,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 11:58:17,190 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 11:58:17,204 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 11:58:17,205 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 11:58:17,207 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 11:58:17,208 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 11:58:17,209 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 11:58:17,209 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 11:58:17,212 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 11:58:17,216 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 11:58:17,217 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 11:58:17,218 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 11:58:17,219 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 11:58:17,219 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 11:58:17,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 11:58:17,232 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 11:58:17,232 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 11:58:17,233 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 11:58:17,234 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 11:58:17,247 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 11:58:17,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 11:58:17,247 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 11:58:17,247 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 11:58:17,248 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 11:58:17,248 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 11:58:17,248 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 11:58:17,249 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 11:58:17,249 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 11:58:17,249 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 11:58:17,249 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 11:58:17,249 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 11:58:17,249 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 11:58:17,249 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 11:58:17,249 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 11:58:17,249 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 11:58:17,249 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 11:58:17,250 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 11:58:17,250 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 11:58:17,250 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 11:58:17,250 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 11:58:17,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 11:58:17,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 11:58:17,250 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 11:58:17,250 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 11:58:17,250 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 11:58:17,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 11:58:17,251 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 11:58:17,251 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 11:58:17,251 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 11:58:17,251 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 11:58:17,251 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 11:58:17,252 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 11:58:17,252 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 11:58:17,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 11:58:17,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 11:58:17,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 11:58:17,430 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 11:58:17,430 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 11:58:17,431 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_append_unequal.i [2022-01-10 11:58:17,491 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3aff44a96/4834cabaf8c84122b5849bd6736d789e/FLAG9464b2bb7 [2022-01-10 11:58:17,907 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 11:58:17,908 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2n_append_unequal.i [2022-01-10 11:58:17,921 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3aff44a96/4834cabaf8c84122b5849bd6736d789e/FLAG9464b2bb7 [2022-01-10 11:58:17,929 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3aff44a96/4834cabaf8c84122b5849bd6736d789e [2022-01-10 11:58:17,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 11:58:17,932 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 11:58:17,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 11:58:17,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 11:58:17,944 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 11:58:17,945 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:58:17" (1/1) ... [2022-01-10 11:58:17,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c85c7a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:58:17, skipping insertion in model container [2022-01-10 11:58:17,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:58:17" (1/1) ... [2022-01-10 11:58:17,950 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 11:58:17,974 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 11:58:18,223 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2n_append_unequal.i[24457,24470] [2022-01-10 11:58:18,225 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 11:58:18,233 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 11:58:18,273 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2n_append_unequal.i[24457,24470] [2022-01-10 11:58:18,274 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 11:58:18,291 INFO L208 MainTranslator]: Completed translation [2022-01-10 11:58:18,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:58:18 WrapperNode [2022-01-10 11:58:18,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 11:58:18,293 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 11:58:18,293 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 11:58:18,293 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 11:58:18,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:58:18" (1/1) ... [2022-01-10 11:58:18,311 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:58:18" (1/1) ... [2022-01-10 11:58:18,330 INFO L137 Inliner]: procedures = 130, calls = 40, calls flagged for inlining = 8, calls inlined = 9, statements flattened = 153 [2022-01-10 11:58:18,331 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 11:58:18,331 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 11:58:18,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 11:58:18,331 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 11:58:18,336 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:58:18" (1/1) ... [2022-01-10 11:58:18,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:58:18" (1/1) ... [2022-01-10 11:58:18,342 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:58:18" (1/1) ... [2022-01-10 11:58:18,342 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:58:18" (1/1) ... [2022-01-10 11:58:18,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:58:18" (1/1) ... [2022-01-10 11:58:18,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:58:18" (1/1) ... [2022-01-10 11:58:18,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:58:18" (1/1) ... [2022-01-10 11:58:18,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 11:58:18,357 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 11:58:18,357 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 11:58:18,357 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 11:58:18,358 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:58:18" (1/1) ... [2022-01-10 11:58:18,363 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 11:58:18,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 11:58:18,386 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 11:58:18,390 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 11:58:18,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 11:58:18,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 11:58:18,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 11:58:18,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 11:58:18,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-10 11:58:18,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-10 11:58:18,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 11:58:18,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 11:58:18,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-01-10 11:58:18,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 11:58:18,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 11:58:18,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 11:58:18,502 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 11:58:18,503 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 11:58:18,789 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 11:58:18,795 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 11:58:18,796 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-01-10 11:58:18,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:58:18 BoogieIcfgContainer [2022-01-10 11:58:18,797 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 11:58:18,798 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 11:58:18,798 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 11:58:18,800 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 11:58:18,802 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:58:18" (1/1) ... [2022-01-10 11:58:18,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:58:18 BasicIcfg [2022-01-10 11:58:18,876 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 11:58:18,877 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 11:58:18,877 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 11:58:18,880 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 11:58:18,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 11:58:17" (1/4) ... [2022-01-10 11:58:18,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b373da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:58:18, skipping insertion in model container [2022-01-10 11:58:18,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:58:18" (2/4) ... [2022-01-10 11:58:18,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b373da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:58:18, skipping insertion in model container [2022-01-10 11:58:18,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:58:18" (3/4) ... [2022-01-10 11:58:18,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b373da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:58:18, skipping insertion in model container [2022-01-10 11:58:18,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:58:18" (4/4) ... [2022-01-10 11:58:18,882 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2n_append_unequal.iTransformedIcfg [2022-01-10 11:58:18,886 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 11:58:18,886 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 11:58:18,918 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 11:58:18,926 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 11:58:18,926 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 11:58:18,937 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 32 states have (on average 1.53125) internal successors, (49), 33 states have internal predecessors, (49), 0 states have call successors, (0), 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 11:58:18,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-10 11:58:18,940 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 11:58:18,941 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 11:58:18,941 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 11:58:18,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 11:58:18,948 INFO L85 PathProgramCache]: Analyzing trace with hash 2125320555, now seen corresponding path program 1 times [2022-01-10 11:58:18,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 11:58:18,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797331645] [2022-01-10 11:58:18,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:58:18,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 11:58:19,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 11:58:19,084 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 11:58:19,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 11:58:19,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797331645] [2022-01-10 11:58:19,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797331645] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 11:58:19,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 11:58:19,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 11:58:19,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278447185] [2022-01-10 11:58:19,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 11:58:19,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 11:58:19,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 11:58:19,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 11:58:19,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 11:58:19,112 INFO L87 Difference]: Start difference. First operand has 34 states, 32 states have (on average 1.53125) internal successors, (49), 33 states have internal predecessors, (49), 0 states have call successors, (0), 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 6.5) internal successors, (13), 2 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 11:58:19,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 11:58:19,122 INFO L93 Difference]: Finished difference Result 59 states and 85 transitions. [2022-01-10 11:58:19,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 11:58:19,125 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 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 11:58:19,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 11:58:19,129 INFO L225 Difference]: With dead ends: 59 [2022-01-10 11:58:19,130 INFO L226 Difference]: Without dead ends: 27 [2022-01-10 11:58:19,132 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 11:58:19,134 INFO L933 BasicCegarLoop]: 44 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, 44 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 11:58:19,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 11:58:19,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-01-10 11:58:19,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-01-10 11:58:19,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 26 states have internal predecessors, (34), 0 states have call successors, (0), 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 11:58:19,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2022-01-10 11:58:19,156 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 13 [2022-01-10 11:58:19,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 11:58:19,156 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2022-01-10 11:58:19,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 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 11:58:19,156 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2022-01-10 11:58:19,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-10 11:58:19,157 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 11:58:19,157 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 11:58:19,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 11:58:19,157 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 11:58:19,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 11:58:19,158 INFO L85 PathProgramCache]: Analyzing trace with hash 328369196, now seen corresponding path program 1 times [2022-01-10 11:58:19,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 11:58:19,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714299216] [2022-01-10 11:58:19,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:58:19,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 11:58:19,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 11:58:19,304 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 11:58:19,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 11:58:19,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714299216] [2022-01-10 11:58:19,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714299216] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 11:58:19,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 11:58:19,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 11:58:19,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710558166] [2022-01-10 11:58:19,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 11:58:19,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 11:58:19,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 11:58:19,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 11:58:19,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 11:58:19,307 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 11:58:19,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 11:58:19,319 INFO L93 Difference]: Finished difference Result 52 states and 66 transitions. [2022-01-10 11:58:19,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 11:58:19,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 11:58:19,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 11:58:19,321 INFO L225 Difference]: With dead ends: 52 [2022-01-10 11:58:19,321 INFO L226 Difference]: Without dead ends: 33 [2022-01-10 11:58:19,321 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 11:58:19,322 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 6 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 11:58:19,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 62 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 11:58:19,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-01-10 11:58:19,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2022-01-10 11:58:19,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 0 states have call successors, (0), 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 11:58:19,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2022-01-10 11:58:19,326 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 13 [2022-01-10 11:58:19,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 11:58:19,326 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2022-01-10 11:58:19,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 11:58:19,326 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2022-01-10 11:58:19,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 11:58:19,327 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 11:58:19,327 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 11:58:19,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 11:58:19,327 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 11:58:19,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 11:58:19,328 INFO L85 PathProgramCache]: Analyzing trace with hash -796720445, now seen corresponding path program 1 times [2022-01-10 11:58:19,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 11:58:19,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903322361] [2022-01-10 11:58:19,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:58:19,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 11:58:19,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 11:58:19,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 11:58:19,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 11:58:19,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903322361] [2022-01-10 11:58:19,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903322361] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 11:58:19,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 11:58:19,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 11:58:19,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568818168] [2022-01-10 11:58:19,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 11:58:19,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 11:58:19,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 11:58:19,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 11:58:19,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 11:58:19,429 INFO L87 Difference]: Start difference. First operand 28 states and 35 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 11:58:19,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 11:58:19,452 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2022-01-10 11:58:19,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 11:58:19,454 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 11:58:19,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 11:58:19,456 INFO L225 Difference]: With dead ends: 58 [2022-01-10 11:58:19,456 INFO L226 Difference]: Without dead ends: 33 [2022-01-10 11:58:19,458 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 11:58:19,459 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 1 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 11:58:19,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 60 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 11:58:19,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-01-10 11:58:19,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2022-01-10 11:58:19,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 31 states have internal predecessors, (39), 0 states have call successors, (0), 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 11:58:19,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2022-01-10 11:58:19,463 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 19 [2022-01-10 11:58:19,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 11:58:19,463 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2022-01-10 11:58:19,463 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 11:58:19,463 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2022-01-10 11:58:19,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 11:58:19,464 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 11:58:19,464 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 11:58:19,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 11:58:19,464 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 11:58:19,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 11:58:19,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1090123452, now seen corresponding path program 1 times [2022-01-10 11:58:19,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 11:58:19,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527494725] [2022-01-10 11:58:19,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:58:19,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 11:58:19,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 11:58:19,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 11:58:19,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 11:58:19,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527494725] [2022-01-10 11:58:19,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527494725] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 11:58:19,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 11:58:19,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-10 11:58:19,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756342608] [2022-01-10 11:58:19,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 11:58:19,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 11:58:19,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 11:58:19,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 11:58:19,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-01-10 11:58:19,863 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 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 11:58:20,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 11:58:20,221 INFO L93 Difference]: Finished difference Result 58 states and 72 transitions. [2022-01-10 11:58:20,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 11:58:20,222 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 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 11:58:20,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 11:58:20,222 INFO L225 Difference]: With dead ends: 58 [2022-01-10 11:58:20,222 INFO L226 Difference]: Without dead ends: 33 [2022-01-10 11:58:20,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2022-01-10 11:58:20,224 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 120 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 11:58:20,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 59 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 11:58:20,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-01-10 11:58:20,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2022-01-10 11:58:20,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 31 states have internal predecessors, (37), 0 states have call successors, (0), 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 11:58:20,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2022-01-10 11:58:20,228 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 19 [2022-01-10 11:58:20,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 11:58:20,229 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2022-01-10 11:58:20,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 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 11:58:20,229 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2022-01-10 11:58:20,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-10 11:58:20,230 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 11:58:20,230 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] [2022-01-10 11:58:20,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 11:58:20,230 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 11:58:20,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 11:58:20,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1950125214, now seen corresponding path program 1 times [2022-01-10 11:58:20,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 11:58:20,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832902728] [2022-01-10 11:58:20,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:58:20,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 11:58:20,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 11:58:20,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 11:58:20,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 11:58:20,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832902728] [2022-01-10 11:58:20,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832902728] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 11:58:20,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104249650] [2022-01-10 11:58:20,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:58:20,400 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 11:58:20,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 11:58:20,420 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 11:58:20,421 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 11:58:20,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 11:58:20,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 11:58:20,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 11:58:20,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 11:58:20,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 11:58:21,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 11:58:21,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104249650] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 11:58:21,010 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 11:58:21,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-01-10 11:58:21,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391042164] [2022-01-10 11:58:21,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 11:58:21,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 11:58:21,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 11:58:21,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 11:58:21,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 11:58:21,018 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 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 11:58:21,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 11:58:21,050 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2022-01-10 11:58:21,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 11:58:21,051 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 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 22 [2022-01-10 11:58:21,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 11:58:21,052 INFO L225 Difference]: With dead ends: 58 [2022-01-10 11:58:21,052 INFO L226 Difference]: Without dead ends: 39 [2022-01-10 11:58:21,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 11:58:21,054 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 19 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 11:58:21,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 115 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 11:58:21,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-01-10 11:58:21,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2022-01-10 11:58:21,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 33 states have internal predecessors, (39), 0 states have call successors, (0), 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 11:58:21,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2022-01-10 11:58:21,060 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 22 [2022-01-10 11:58:21,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 11:58:21,060 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2022-01-10 11:58:21,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 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 11:58:21,060 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2022-01-10 11:58:21,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-10 11:58:21,061 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 11:58:21,061 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 11:58:21,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 11:58:21,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 11:58:21,276 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 11:58:21,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 11:58:21,276 INFO L85 PathProgramCache]: Analyzing trace with hash 658465959, now seen corresponding path program 1 times [2022-01-10 11:58:21,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 11:58:21,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294820221] [2022-01-10 11:58:21,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:58:21,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 11:58:21,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 11:58:22,291 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 11:58:22,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 11:58:22,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294820221] [2022-01-10 11:58:22,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294820221] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 11:58:22,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079489244] [2022-01-10 11:58:22,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:58:22,292 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 11:58:22,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 11:58:22,294 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 11:58:22,296 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 11:58:22,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 11:58:22,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 722 conjuncts, 85 conjunts are in the unsatisfiable core [2022-01-10 11:58:22,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 11:58:23,026 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-10 11:58:23,211 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-10 11:58:23,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 11:58:23,300 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 30 [2022-01-10 11:58:23,520 INFO L353 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-01-10 11:58:23,521 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2022-01-10 11:58:23,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 11:58:23,659 INFO L353 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-01-10 11:58:23,660 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 54 [2022-01-10 11:58:23,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 11:58:23,667 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 39 [2022-01-10 11:58:24,048 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 11:58:24,048 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 11:58:24,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079489244] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 11:58:24,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 11:58:24,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [19] total 34 [2022-01-10 11:58:24,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483152064] [2022-01-10 11:58:24,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 11:58:24,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-10 11:58:24,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 11:58:24,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-10 11:58:24,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1012, Unknown=0, NotChecked=0, Total=1122 [2022-01-10 11:58:24,050 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 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 11:58:25,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 11:58:25,760 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2022-01-10 11:58:25,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-10 11:58:25,761 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 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 11:58:25,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 11:58:25,761 INFO L225 Difference]: With dead ends: 49 [2022-01-10 11:58:25,761 INFO L226 Difference]: Without dead ends: 38 [2022-01-10 11:58:25,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=322, Invalid=1934, Unknown=0, NotChecked=0, Total=2256 [2022-01-10 11:58:25,763 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 126 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 11:58:25,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 120 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 11:58:25,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-01-10 11:58:25,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2022-01-10 11:58:25,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 35 states have internal predecessors, (41), 0 states have call successors, (0), 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 11:58:25,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2022-01-10 11:58:25,768 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 28 [2022-01-10 11:58:25,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 11:58:25,769 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2022-01-10 11:58:25,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 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 11:58:25,769 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2022-01-10 11:58:25,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-10 11:58:25,769 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 11:58:25,770 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] [2022-01-10 11:58:25,792 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 11:58:25,978 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,SelfDestructingSolverStorable5 [2022-01-10 11:58:25,979 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 11:58:25,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 11:58:25,979 INFO L85 PathProgramCache]: Analyzing trace with hash 678288258, now seen corresponding path program 1 times [2022-01-10 11:58:25,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 11:58:25,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28951617] [2022-01-10 11:58:25,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:58:25,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 11:58:26,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 11:58:27,680 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 11:58:27,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 11:58:27,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28951617] [2022-01-10 11:58:27,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28951617] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 11:58:27,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205710275] [2022-01-10 11:58:27,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:58:27,681 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 11:58:27,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 11:58:27,682 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 11:58:27,682 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 11:58:28,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 11:58:28,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 109 conjunts are in the unsatisfiable core [2022-01-10 11:58:28,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 11:58:28,267 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-10 11:58:28,522 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-01-10 11:58:28,523 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 23 [2022-01-10 11:58:28,735 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-10 11:58:28,866 INFO L353 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2022-01-10 11:58:28,866 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 42 [2022-01-10 11:58:29,295 INFO L353 Elim1Store]: treesize reduction 8, result has 78.4 percent of original size [2022-01-10 11:58:29,295 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 40 [2022-01-10 11:58:29,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 11:58:29,506 INFO L353 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2022-01-10 11:58:29,506 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 148 treesize of output 128 [2022-01-10 11:58:29,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 11:58:29,513 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 127 [2022-01-10 11:58:30,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 11:58:30,649 INFO L353 Elim1Store]: treesize reduction 220, result has 13.4 percent of original size [2022-01-10 11:58:30,649 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 296 treesize of output 114 [2022-01-10 11:58:30,687 INFO L353 Elim1Store]: treesize reduction 66, result has 19.5 percent of original size [2022-01-10 11:58:30,688 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 351 treesize of output 214 [2022-01-10 11:58:30,703 INFO L353 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-01-10 11:58:30,704 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 318 treesize of output 259 [2022-01-10 11:58:30,722 INFO L353 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-01-10 11:58:30,722 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 328 treesize of output 297 [2022-01-10 11:58:30,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 11:58:30,898 INFO L353 Elim1Store]: treesize reduction 85, result has 12.4 percent of original size [2022-01-10 11:58:30,898 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 320 treesize of output 86 [2022-01-10 11:58:30,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 11:58:30,909 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-01-10 11:58:30,940 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 11:58:30,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 11:58:32,100 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_672 (Array Int Int)) (v_ArrVal_682 (Array Int Int)) (|v_ULTIMATE.start_ULTIMATE.start_dll_append_~last~0#1.offsetInt_5| Int) (v_ArrVal_674 (Array Int Int)) (v_ArrVal_673 (Array Int Int))) (let ((.cse9 (store |c_#memory_$Pointer$.offsetInt| |c_ULTIMATE.start_ULTIMATE.start_node_create_~temp~0#1.baseInt| v_ArrVal_672))) (let ((.cse7 (store |c_#memory_$Pointer$.baseInt| |c_ULTIMATE.start_ULTIMATE.start_node_create_~temp~0#1.baseInt| v_ArrVal_673)) (.cse1 (select (select .cse9 |c_ULTIMATE.start_ULTIMATE.start_dll_append_~head#1.baseInt|) |c_ULTIMATE.start_ULTIMATE.start_dll_append_~head#1.offsetInt|))) (let ((.cse5 (mod (+ 4 |v_ULTIMATE.start_ULTIMATE.start_dll_append_~last~0#1.offsetInt_5|) 18446744073709551616)) (.cse8 (select (select .cse7 (select (select .cse7 |c_ULTIMATE.start_ULTIMATE.start_dll_append_~head#1.baseInt|) |c_ULTIMATE.start_ULTIMATE.start_dll_append_~head#1.offsetInt|)) (mod (+ .cse1 4) 18446744073709551616)))) (let ((.cse4 (select .cse7 .cse8)) (.cse3 (select (select (store (store .cse9 .cse8 (store (select .cse9 .cse8) .cse5 |c_ULTIMATE.start_ULTIMATE.start_node_create_~temp~0#1.offsetInt|)) |c_ULTIMATE.start_ULTIMATE.start_node_create_~temp~0#1.baseInt| v_ArrVal_674) |c_ULTIMATE.start_ULTIMATE.start_main_~#s~0#1.baseInt|) |c_ULTIMATE.start_ULTIMATE.start_main_~#s~0#1.offsetInt|))) (let ((.cse0 (select (let ((.cse6 (store (store .cse7 .cse8 (store .cse4 .cse5 |c_ULTIMATE.start_ULTIMATE.start_node_create_~temp~0#1.baseInt|)) |c_ULTIMATE.start_ULTIMATE.start_node_create_~temp~0#1.baseInt| v_ArrVal_682))) (select .cse6 (select (select .cse6 |c_ULTIMATE.start_ULTIMATE.start_main_~#s~0#1.baseInt|) |c_ULTIMATE.start_ULTIMATE.start_main_~#s~0#1.offsetInt|))) (mod (+ .cse3 4) 18446744073709551616))) (.cse2 (select .cse4 .cse5))) (or (<= 1 .cse0) (not (<= 0 .cse0)) (not (<= 0 .cse1)) (not (<= 0 .cse2)) (not (<= 0 .cse3)) (not (<= .cse2 0))))))))) is different from false [2022-01-10 11:58:32,308 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 11:58:32,309 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 59332 treesize of output 55884 [2022-01-10 11:58:32,470 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60858 treesize of output 59240 [2022-01-10 11:58:32,586 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58992 treesize of output 58512 [2022-01-10 11:58:32,794 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2022-01-10 11:58:32,794 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-01-10 11:58:32,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2022-01-10 11:58:32,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041973706] [2022-01-10 11:58:32,794 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-01-10 11:58:32,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-10 11:58:32,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 11:58:32,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-10 11:58:32,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=2144, Unknown=4, NotChecked=94, Total=2450 [2022-01-10 11:58:32,797 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 23 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 states have internal predecessors, (30), 0 states have call successors, (0), 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 11:58:38,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 11:58:38,962 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2022-01-10 11:58:38,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-10 11:58:38,963 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 states have internal predecessors, (30), 0 states have call successors, (0), 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 11:58:38,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 11:58:38,963 INFO L225 Difference]: With dead ends: 57 [2022-01-10 11:58:38,963 INFO L226 Difference]: Without dead ends: 54 [2022-01-10 11:58:38,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 866 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=684, Invalid=4428, Unknown=4, NotChecked=140, Total=5256 [2022-01-10 11:58:38,966 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 309 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 11:58:38,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 164 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 11:58:38,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-01-10 11:58:38,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 41. [2022-01-10 11:58:38,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.175) internal successors, (47), 40 states have internal predecessors, (47), 0 states have call successors, (0), 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 11:58:38,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2022-01-10 11:58:38,975 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 30 [2022-01-10 11:58:38,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 11:58:38,975 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2022-01-10 11:58:38,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 states have internal predecessors, (30), 0 states have call successors, (0), 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 11:58:38,975 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2022-01-10 11:58:38,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-10 11:58:38,976 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 11:58:38,976 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] [2022-01-10 11:58:38,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 11:58:39,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 11:58:39,192 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 11:58:39,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 11:58:39,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1000962022, now seen corresponding path program 1 times [2022-01-10 11:58:39,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 11:58:39,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239548589] [2022-01-10 11:58:39,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 11:58:39,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 11:58:39,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat