/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/array-examples/sorting_selectionsort_2_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 09:24:42,285 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 09:24:42,287 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 09:24:42,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 09:24:42,358 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 09:24:42,363 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 09:24:42,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 09:24:42,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 09:24:42,365 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 09:24:42,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 09:24:42,367 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 09:24:42,369 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 09:24:42,370 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 09:24:42,376 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 09:24:42,376 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 09:24:42,377 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 09:24:42,379 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 09:24:42,384 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 09:24:42,385 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 09:24:42,385 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 09:24:42,395 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 09:24:42,417 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 09:24:42,417 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 09:24:42,418 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 09:24:42,418 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 09:24:42,418 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 09:24:42,419 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 09:24:42,419 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 09:24:42,421 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 09:24:42,422 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 09:24:42,422 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 09:24:42,422 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 09:24:42,422 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 09:24:42,422 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 09:24:42,422 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 09:24:42,422 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 09:24:42,422 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 09:24:42,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 09:24:42,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 09:24:42,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 09:24:42,423 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 09:24:42,423 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 09:24:42,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 09:24:42,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 09:24:42,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 09:24:42,424 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 09:24:42,424 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 09:24:42,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 09:24:42,424 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 09:24:42,424 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 09:24:42,424 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 09:24:42,425 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 09:24:42,425 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 09:24:42,425 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 09:24:42,425 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 09:24:42,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 09:24:42,608 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 09:24:42,610 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 09:24:42,611 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 09:24:42,611 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 09:24:42,612 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/sorting_selectionsort_2_ground.i [2022-01-10 09:24:42,660 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcaa0e2c0/bc0bd96dc95549cf9dcbbd7549cfa044/FLAG2bea7cd4f [2022-01-10 09:24:43,014 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 09:24:43,014 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/sorting_selectionsort_2_ground.i [2022-01-10 09:24:43,019 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcaa0e2c0/bc0bd96dc95549cf9dcbbd7549cfa044/FLAG2bea7cd4f [2022-01-10 09:24:43,439 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcaa0e2c0/bc0bd96dc95549cf9dcbbd7549cfa044 [2022-01-10 09:24:43,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 09:24:43,442 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 09:24:43,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 09:24:43,444 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 09:24:43,447 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 09:24:43,448 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:24:43" (1/1) ... [2022-01-10 09:24:43,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55c340c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:24:43, skipping insertion in model container [2022-01-10 09:24:43,449 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:24:43" (1/1) ... [2022-01-10 09:24:43,455 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 09:24:43,468 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 09:24:43,603 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/sorting_selectionsort_2_ground.i[823,836] [2022-01-10 09:24:43,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 09:24:43,650 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 09:24:43,667 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/sorting_selectionsort_2_ground.i[823,836] [2022-01-10 09:24:43,693 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 09:24:43,713 INFO L208 MainTranslator]: Completed translation [2022-01-10 09:24:43,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:24:43 WrapperNode [2022-01-10 09:24:43,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 09:24:43,714 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 09:24:43,714 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 09:24:43,714 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 09:24:43,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:24:43" (1/1) ... [2022-01-10 09:24:43,739 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:24:43" (1/1) ... [2022-01-10 09:24:43,767 INFO L137 Inliner]: procedures = 18, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 128 [2022-01-10 09:24:43,768 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 09:24:43,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 09:24:43,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 09:24:43,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 09:24:43,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:24:43" (1/1) ... [2022-01-10 09:24:43,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:24:43" (1/1) ... [2022-01-10 09:24:43,782 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:24:43" (1/1) ... [2022-01-10 09:24:43,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:24:43" (1/1) ... [2022-01-10 09:24:43,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:24:43" (1/1) ... [2022-01-10 09:24:43,791 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:24:43" (1/1) ... [2022-01-10 09:24:43,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:24:43" (1/1) ... [2022-01-10 09:24:43,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 09:24:43,796 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 09:24:43,796 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 09:24:43,796 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 09:24:43,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:24:43" (1/1) ... [2022-01-10 09:24:43,810 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 09:24:43,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:24:43,833 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 09:24:43,834 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 09:24:43,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 09:24:43,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 09:24:43,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 09:24:43,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 09:24:43,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 09:24:43,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 09:24:43,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 09:24:43,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 09:24:43,912 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 09:24:43,913 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 09:24:44,126 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 09:24:44,131 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 09:24:44,131 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-01-10 09:24:44,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:24:44 BoogieIcfgContainer [2022-01-10 09:24:44,134 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 09:24:44,135 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 09:24:44,135 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 09:24:44,136 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 09:24:44,142 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:24:44" (1/1) ... [2022-01-10 09:24:44,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:24:44 BasicIcfg [2022-01-10 09:24:44,273 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 09:24:44,274 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 09:24:44,274 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 09:24:44,277 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 09:24:44,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 09:24:43" (1/4) ... [2022-01-10 09:24:44,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@80cbe45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:24:44, skipping insertion in model container [2022-01-10 09:24:44,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:24:43" (2/4) ... [2022-01-10 09:24:44,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@80cbe45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:24:44, skipping insertion in model container [2022-01-10 09:24:44,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:24:44" (3/4) ... [2022-01-10 09:24:44,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@80cbe45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 09:24:44, skipping insertion in model container [2022-01-10 09:24:44,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:24:44" (4/4) ... [2022-01-10 09:24:44,279 INFO L111 eAbstractionObserver]: Analyzing ICFG sorting_selectionsort_2_ground.iTransformedIcfg [2022-01-10 09:24:44,283 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 09:24:44,284 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-01-10 09:24:44,320 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 09:24:44,326 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 09:24:44,326 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-10 09:24:44,337 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 36 states have (on average 1.6666666666666667) internal successors, (60), 39 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:24:44,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 09:24:44,341 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:24:44,341 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:24:44,342 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:24:44,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:24:44,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1176236106, now seen corresponding path program 1 times [2022-01-10 09:24:44,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:24:44,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29971744] [2022-01-10 09:24:44,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:24:44,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:24:44,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:24:44,487 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 09:24:44,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:24:44,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29971744] [2022-01-10 09:24:44,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29971744] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:24:44,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:24:44,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 09:24:44,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316144187] [2022-01-10 09:24:44,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:24:44,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 09:24:44,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:24:44,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 09:24:44,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 09:24:44,515 INFO L87 Difference]: Start difference. First operand has 40 states, 36 states have (on average 1.6666666666666667) internal successors, (60), 39 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:24:44,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:24:44,529 INFO L93 Difference]: Finished difference Result 76 states and 114 transitions. [2022-01-10 09:24:44,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 09:24:44,531 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-01-10 09:24:44,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:24:44,537 INFO L225 Difference]: With dead ends: 76 [2022-01-10 09:24:44,537 INFO L226 Difference]: Without dead ends: 36 [2022-01-10 09:24:44,540 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 09:24:44,542 INFO L933 BasicCegarLoop]: 49 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, 49 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 09:24:44,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 09:24:44,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-01-10 09:24:44,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-01-10 09:24:44,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 35 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:24:44,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2022-01-10 09:24:44,572 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 10 [2022-01-10 09:24:44,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:24:44,573 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2022-01-10 09:24:44,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:24:44,573 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2022-01-10 09:24:44,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 09:24:44,574 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:24:44,574 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:24:44,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 09:24:44,574 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:24:44,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:24:44,576 INFO L85 PathProgramCache]: Analyzing trace with hash 595203380, now seen corresponding path program 1 times [2022-01-10 09:24:44,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:24:44,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785825927] [2022-01-10 09:24:44,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:24:44,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:24:44,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:24:44,739 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 09:24:44,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:24:44,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785825927] [2022-01-10 09:24:44,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785825927] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:24:44,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:24:44,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 09:24:44,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948325838] [2022-01-10 09:24:44,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:24:44,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 09:24:44,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:24:44,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 09:24:44,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 09:24:44,742 INFO L87 Difference]: Start difference. First operand 36 states and 45 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:24:44,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:24:44,875 INFO L93 Difference]: Finished difference Result 92 states and 117 transitions. [2022-01-10 09:24:44,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 09:24:44,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-01-10 09:24:44,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:24:44,878 INFO L225 Difference]: With dead ends: 92 [2022-01-10 09:24:44,878 INFO L226 Difference]: Without dead ends: 60 [2022-01-10 09:24:44,878 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 09:24:44,879 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 28 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 09:24:44,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 62 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 09:24:44,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-01-10 09:24:44,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 38. [2022-01-10 09:24:44,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 37 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 09:24:44,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2022-01-10 09:24:44,887 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 10 [2022-01-10 09:24:44,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:24:44,887 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2022-01-10 09:24:44,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:24:44,887 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2022-01-10 09:24:44,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 09:24:44,888 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:24:44,888 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:24:44,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 09:24:44,888 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:24:44,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:24:44,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1938575906, now seen corresponding path program 1 times [2022-01-10 09:24:44,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:24:44,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410172489] [2022-01-10 09:24:44,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:24:44,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:24:45,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:24:45,086 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 09:24:45,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:24:45,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410172489] [2022-01-10 09:24:45,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410172489] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 09:24:45,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776452797] [2022-01-10 09:24:45,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:24:45,089 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:24:45,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:24:45,090 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 09:24:45,092 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 09:24:45,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:24:45,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 09:24:45,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:24:45,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 09:24:45,379 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 09:24:45,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776452797] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:24:45,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 09:24:45,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2022-01-10 09:24:45,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316319933] [2022-01-10 09:24:45,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:24:45,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 09:24:45,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:24:45,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 09:24:45,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 09:24:45,385 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 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 09:24:45,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:24:45,489 INFO L93 Difference]: Finished difference Result 84 states and 106 transitions. [2022-01-10 09:24:45,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 09:24:45,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2022-01-10 09:24:45,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:24:45,492 INFO L225 Difference]: With dead ends: 84 [2022-01-10 09:24:45,492 INFO L226 Difference]: Without dead ends: 53 [2022-01-10 09:24:45,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 09:24:45,493 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 15 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 09:24:45,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 86 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 09:24:45,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-01-10 09:24:45,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 44. [2022-01-10 09:24:45,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 41 states have (on average 1.3658536585365855) internal successors, (56), 43 states have internal predecessors, (56), 0 states have call successors, (0), 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 09:24:45,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 56 transitions. [2022-01-10 09:24:45,503 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 56 transitions. Word has length 14 [2022-01-10 09:24:45,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:24:45,503 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 56 transitions. [2022-01-10 09:24:45,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 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 09:24:45,503 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 56 transitions. [2022-01-10 09:24:45,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-10 09:24:45,504 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:24:45,504 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:24:45,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 09:24:45,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:24:45,728 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:24:45,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:24:45,728 INFO L85 PathProgramCache]: Analyzing trace with hash 32674390, now seen corresponding path program 1 times [2022-01-10 09:24:45,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:24:45,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655042341] [2022-01-10 09:24:45,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:24:45,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:24:45,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:24:45,841 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 09:24:45,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:24:45,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655042341] [2022-01-10 09:24:45,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655042341] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 09:24:45,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846926855] [2022-01-10 09:24:45,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:24:45,844 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:24:45,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:24:45,845 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 09:24:45,877 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 09:24:45,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:24:45,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 09:24:45,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:24:46,028 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 09:24:46,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 09:24:46,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 09:24:46,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846926855] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 09:24:46,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-10 09:24:46,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2022-01-10 09:24:46,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149926229] [2022-01-10 09:24:46,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:24:46,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 09:24:46,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:24:46,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 09:24:46,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 09:24:46,085 INFO L87 Difference]: Start difference. First operand 44 states and 56 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:24:46,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:24:46,184 INFO L93 Difference]: Finished difference Result 80 states and 103 transitions. [2022-01-10 09:24:46,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 09:24:46,185 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-10 09:24:46,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:24:46,186 INFO L225 Difference]: With dead ends: 80 [2022-01-10 09:24:46,186 INFO L226 Difference]: Without dead ends: 46 [2022-01-10 09:24:46,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-10 09:24:46,187 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 31 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 09:24:46,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 68 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 09:24:46,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-01-10 09:24:46,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-01-10 09:24:46,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 45 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:24:46,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2022-01-10 09:24:46,194 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 58 transitions. Word has length 15 [2022-01-10 09:24:46,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:24:46,195 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 58 transitions. [2022-01-10 09:24:46,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:24:46,195 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 58 transitions. [2022-01-10 09:24:46,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-10 09:24:46,196 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:24:46,196 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:24:46,221 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 09:24:46,411 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,SelfDestructingSolverStorable3 [2022-01-10 09:24:46,412 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:24:46,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:24:46,412 INFO L85 PathProgramCache]: Analyzing trace with hash 493987529, now seen corresponding path program 1 times [2022-01-10 09:24:46,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:24:46,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649275369] [2022-01-10 09:24:46,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:24:46,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:24:46,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:24:46,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 09:24:46,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:24:46,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649275369] [2022-01-10 09:24:46,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649275369] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 09:24:46,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43905891] [2022-01-10 09:24:46,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:24:46,521 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:24:46,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:24:46,522 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 09:24:46,524 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 09:24:46,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:24:46,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 09:24:46,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:24:46,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 09:24:46,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 09:24:46,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 09:24:46,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43905891] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 09:24:46,765 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 09:24:46,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2022-01-10 09:24:46,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158006503] [2022-01-10 09:24:46,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 09:24:46,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 09:24:46,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:24:46,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 09:24:46,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-01-10 09:24:46,767 INFO L87 Difference]: Start difference. First operand 46 states and 58 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 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 09:24:46,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:24:46,905 INFO L93 Difference]: Finished difference Result 130 states and 163 transitions. [2022-01-10 09:24:46,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 09:24:46,906 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 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 18 [2022-01-10 09:24:46,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:24:46,908 INFO L225 Difference]: With dead ends: 130 [2022-01-10 09:24:46,908 INFO L226 Difference]: Without dead ends: 96 [2022-01-10 09:24:46,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-01-10 09:24:46,909 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 112 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 09:24:46,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 119 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 09:24:46,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-01-10 09:24:46,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 56. [2022-01-10 09:24:46,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 53 states have (on average 1.3962264150943395) internal successors, (74), 55 states have internal predecessors, (74), 0 states have call successors, (0), 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 09:24:46,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 74 transitions. [2022-01-10 09:24:46,917 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 74 transitions. Word has length 18 [2022-01-10 09:24:46,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:24:46,918 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 74 transitions. [2022-01-10 09:24:46,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 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 09:24:46,918 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 74 transitions. [2022-01-10 09:24:46,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-10 09:24:46,918 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:24:46,919 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:24:46,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-10 09:24:47,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:24:47,145 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:24:47,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:24:47,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1381491210, now seen corresponding path program 1 times [2022-01-10 09:24:47,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:24:47,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786133899] [2022-01-10 09:24:47,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:24:47,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:24:47,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:24:47,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 09:24:47,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:24:47,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786133899] [2022-01-10 09:24:47,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786133899] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 09:24:47,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265691304] [2022-01-10 09:24:47,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:24:47,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:24:47,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:24:47,205 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 09:24:47,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-10 09:24:47,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:24:47,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 09:24:47,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:24:47,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 09:24:47,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 09:24:47,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 09:24:47,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265691304] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 09:24:47,481 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 09:24:47,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 6] total 9 [2022-01-10 09:24:47,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630246561] [2022-01-10 09:24:47,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 09:24:47,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 09:24:47,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:24:47,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 09:24:47,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-01-10 09:24:47,483 INFO L87 Difference]: Start difference. First operand 56 states and 74 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 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 09:24:48,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:24:48,090 INFO L93 Difference]: Finished difference Result 178 states and 238 transitions. [2022-01-10 09:24:48,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 09:24:48,091 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 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) Word has length 18 [2022-01-10 09:24:48,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:24:48,091 INFO L225 Difference]: With dead ends: 178 [2022-01-10 09:24:48,092 INFO L226 Difference]: Without dead ends: 127 [2022-01-10 09:24:48,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-01-10 09:24:48,093 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 276 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 09:24:48,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 201 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 09:24:48,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-01-10 09:24:48,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 117. [2022-01-10 09:24:48,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 114 states have (on average 1.394736842105263) internal successors, (159), 116 states have internal predecessors, (159), 0 states have call successors, (0), 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 09:24:48,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 159 transitions. [2022-01-10 09:24:48,119 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 159 transitions. Word has length 18 [2022-01-10 09:24:48,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:24:48,119 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 159 transitions. [2022-01-10 09:24:48,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 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 09:24:48,120 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 159 transitions. [2022-01-10 09:24:48,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-10 09:24:48,120 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:24:48,120 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:24:48,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-10 09:24:48,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:24:48,335 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:24:48,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:24:48,336 INFO L85 PathProgramCache]: Analyzing trace with hash 680427184, now seen corresponding path program 2 times [2022-01-10 09:24:48,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:24:48,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191150504] [2022-01-10 09:24:48,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:24:48,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:24:48,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:24:48,483 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 09:24:48,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:24:48,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191150504] [2022-01-10 09:24:48,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191150504] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 09:24:48,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5443514] [2022-01-10 09:24:48,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 09:24:48,484 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:24:48,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:24:48,485 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 09:24:48,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-10 09:24:48,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 09:24:48,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 09:24:48,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 09:24:48,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:24:48,738 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-10 09:24:48,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 09:24:48,887 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-10 09:24:48,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5443514] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 09:24:48,887 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 09:24:48,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 6] total 13 [2022-01-10 09:24:48,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508908065] [2022-01-10 09:24:48,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 09:24:48,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-10 09:24:48,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:24:48,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-10 09:24:48,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-01-10 09:24:48,890 INFO L87 Difference]: Start difference. First operand 117 states and 159 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:24:52,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:24:52,224 INFO L93 Difference]: Finished difference Result 343 states and 466 transitions. [2022-01-10 09:24:52,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-10 09:24:52,225 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-10 09:24:52,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:24:52,226 INFO L225 Difference]: With dead ends: 343 [2022-01-10 09:24:52,226 INFO L226 Difference]: Without dead ends: 235 [2022-01-10 09:24:52,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=219, Invalid=971, Unknown=0, NotChecked=0, Total=1190 [2022-01-10 09:24:52,227 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 420 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 09:24:52,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [420 Valid, 560 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 09:24:52,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-01-10 09:24:52,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 192. [2022-01-10 09:24:52,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 189 states have (on average 1.3544973544973544) internal successors, (256), 191 states have internal predecessors, (256), 0 states have call successors, (0), 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 09:24:52,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 256 transitions. [2022-01-10 09:24:52,255 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 256 transitions. Word has length 24 [2022-01-10 09:24:52,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:24:52,255 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 256 transitions. [2022-01-10 09:24:52,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:24:52,255 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 256 transitions. [2022-01-10 09:24:52,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-10 09:24:52,256 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:24:52,256 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:24:52,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-10 09:24:52,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:24:52,480 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:24:52,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:24:52,480 INFO L85 PathProgramCache]: Analyzing trace with hash 260032270, now seen corresponding path program 2 times [2022-01-10 09:24:52,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:24:52,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93109796] [2022-01-10 09:24:52,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:24:52,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:24:52,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:24:52,655 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-10 09:24:52,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:24:52,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93109796] [2022-01-10 09:24:52,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93109796] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 09:24:52,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192014536] [2022-01-10 09:24:52,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 09:24:52,656 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:24:52,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:24:52,657 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 09:24:52,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-10 09:24:53,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 09:24:53,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 09:24:53,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-10 09:24:53,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:25:04,872 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 09:25:04,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 09:25:08,256 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-01-10 09:25:08,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192014536] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 09:25:08,257 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 09:25:08,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14, 9] total 26 [2022-01-10 09:25:08,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111914019] [2022-01-10 09:25:08,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 09:25:08,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-10 09:25:08,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:25:08,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-10 09:25:08,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=526, Unknown=5, NotChecked=0, Total=650 [2022-01-10 09:25:08,261 INFO L87 Difference]: Start difference. First operand 192 states and 256 transitions. Second operand has 26 states, 26 states have (on average 3.0) internal successors, (78), 26 states have internal predecessors, (78), 0 states have call successors, (0), 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 09:25:21,527 WARN L228 SmtUtils]: Spent 12.25s on a formula simplification. DAG size of input: 52 DAG size of output: 41 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-10 09:25:49,967 WARN L228 SmtUtils]: Spent 15.89s on a formula simplification. DAG size of input: 60 DAG size of output: 49 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)