/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_LAZY.epf -i ../../../trunk/examples/svcomp/array-examples/standard_two_index_02.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 15:21:11,222 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 15:21:11,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 15:21:11,298 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 15:21:11,309 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 15:21:11,310 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 15:21:11,311 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 15:21:11,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 15:21:11,312 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 15:21:11,313 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 15:21:11,315 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 15:21:11,323 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 15:21:11,324 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 15:21:11,327 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 15:21:11,328 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 15:21:11,329 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 15:21:11,331 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 15:21:11,337 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 15:21:11,337 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 15:21:11,344 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 15:21:11,346 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 15:21:11,363 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 15:21:11,363 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 15:21:11,364 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 15:21:11,364 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 15:21:11,365 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 15:21:11,365 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 15:21:11,365 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 15:21:11,365 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 15:21:11,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 15:21:11,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 15:21:11,365 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 15:21:11,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 15:21:11,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 15:21:11,366 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 15:21:11,366 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 15:21:11,366 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 15:21:11,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 15:21:11,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 15:21:11,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 15:21:11,366 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 15:21:11,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 15:21:11,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 15:21:11,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 15:21:11,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 15:21:11,368 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 15:21:11,368 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 15:21:11,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 15:21:11,368 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 15:21:11,368 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 15:21:11,368 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 15:21:11,368 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 15:21:11,368 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 15:21:11,369 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 15:21:11,369 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 15:21:11,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 15:21:11,573 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 15:21:11,575 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 15:21:11,576 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 15:21:11,578 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 15:21:11,579 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_two_index_02.i [2022-01-10 15:21:11,647 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c91a433dd/b39887c0fa174158a56c9ad46c1f5274/FLAG9a98e5e27 [2022-01-10 15:21:12,002 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 15:21:12,002 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_two_index_02.i [2022-01-10 15:21:12,007 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c91a433dd/b39887c0fa174158a56c9ad46c1f5274/FLAG9a98e5e27 [2022-01-10 15:21:12,414 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c91a433dd/b39887c0fa174158a56c9ad46c1f5274 [2022-01-10 15:21:12,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 15:21:12,417 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 15:21:12,419 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 15:21:12,419 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 15:21:12,424 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 15:21:12,424 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:21:12" (1/1) ... [2022-01-10 15:21:12,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@682e0b94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:21:12, skipping insertion in model container [2022-01-10 15:21:12,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:21:12" (1/1) ... [2022-01-10 15:21:12,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 15:21:12,444 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 15:21:12,574 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/standard_two_index_02.i[814,827] [2022-01-10 15:21:12,596 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 15:21:12,607 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 15:21:12,654 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/standard_two_index_02.i[814,827] [2022-01-10 15:21:12,675 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 15:21:12,695 INFO L208 MainTranslator]: Completed translation [2022-01-10 15:21:12,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:21:12 WrapperNode [2022-01-10 15:21:12,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 15:21:12,697 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 15:21:12,697 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 15:21:12,698 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 15:21:12,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:21:12" (1/1) ... [2022-01-10 15:21:12,712 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:21:12" (1/1) ... [2022-01-10 15:21:12,732 INFO L137 Inliner]: procedures = 18, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 58 [2022-01-10 15:21:12,733 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 15:21:12,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 15:21:12,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 15:21:12,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 15:21:12,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:21:12" (1/1) ... [2022-01-10 15:21:12,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:21:12" (1/1) ... [2022-01-10 15:21:12,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:21:12" (1/1) ... [2022-01-10 15:21:12,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:21:12" (1/1) ... [2022-01-10 15:21:12,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:21:12" (1/1) ... [2022-01-10 15:21:12,766 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:21:12" (1/1) ... [2022-01-10 15:21:12,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:21:12" (1/1) ... [2022-01-10 15:21:12,769 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 15:21:12,770 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 15:21:12,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 15:21:12,770 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 15:21:12,773 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:21:12" (1/1) ... [2022-01-10 15:21:12,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 15:21:12,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:21:12,805 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 15:21:12,829 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 15:21:12,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 15:21:12,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 15:21:12,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 15:21:12,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 15:21:12,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 15:21:12,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 15:21:12,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 15:21:12,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 15:21:12,907 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 15:21:12,908 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 15:21:13,028 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 15:21:13,033 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 15:21:13,033 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-10 15:21:13,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:21:13 BoogieIcfgContainer [2022-01-10 15:21:13,035 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 15:21:13,036 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 15:21:13,036 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 15:21:13,037 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 15:21:13,042 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:21:13" (1/1) ... [2022-01-10 15:21:13,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 03:21:13 BasicIcfg [2022-01-10 15:21:13,141 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 15:21:13,143 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 15:21:13,143 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 15:21:13,146 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 15:21:13,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 03:21:12" (1/4) ... [2022-01-10 15:21:13,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@381c546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:21:13, skipping insertion in model container [2022-01-10 15:21:13,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:21:12" (2/4) ... [2022-01-10 15:21:13,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@381c546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:21:13, skipping insertion in model container [2022-01-10 15:21:13,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:21:13" (3/4) ... [2022-01-10 15:21:13,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@381c546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 03:21:13, skipping insertion in model container [2022-01-10 15:21:13,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 03:21:13" (4/4) ... [2022-01-10 15:21:13,148 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_two_index_02.iTransformedIcfg [2022-01-10 15:21:13,153 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 15:21:13,153 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 15:21:13,190 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 15:21:13,196 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 15:21:13,197 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 15:21:13,208 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:21:13,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-10 15:21:13,212 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:21:13,213 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:21:13,213 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:21:13,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:21:13,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1184970882, now seen corresponding path program 1 times [2022-01-10 15:21:13,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:21:13,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422212089] [2022-01-10 15:21:13,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:21:13,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:21:13,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:21:13,394 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 15:21:13,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:21:13,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422212089] [2022-01-10 15:21:13,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422212089] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:21:13,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:21:13,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 15:21:13,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494926088] [2022-01-10 15:21:13,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:21:13,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 15:21:13,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:21:13,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 15:21:13,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 15:21:13,428 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:21:13,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:21:13,440 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2022-01-10 15:21:13,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 15:21:13,442 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-01-10 15:21:13,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:21:13,447 INFO L225 Difference]: With dead ends: 27 [2022-01-10 15:21:13,448 INFO L226 Difference]: Without dead ends: 11 [2022-01-10 15:21:13,450 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 15:21:13,454 INFO L933 BasicCegarLoop]: 17 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, 17 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 15:21:13,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 15:21:13,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-01-10 15:21:13,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-01-10 15:21:13,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 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 15:21:13,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2022-01-10 15:21:13,482 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 9 [2022-01-10 15:21:13,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:21:13,483 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2022-01-10 15:21:13,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:21:13,483 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2022-01-10 15:21:13,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-10 15:21:13,484 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:21:13,484 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:21:13,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 15:21:13,484 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:21:13,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:21:13,485 INFO L85 PathProgramCache]: Analyzing trace with hash -296543680, now seen corresponding path program 1 times [2022-01-10 15:21:13,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:21:13,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201068255] [2022-01-10 15:21:13,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:21:13,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:21:13,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:21:13,670 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 15:21:13,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:21:13,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201068255] [2022-01-10 15:21:13,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201068255] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:21:13,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:21:13,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 15:21:13,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243324680] [2022-01-10 15:21:13,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:21:13,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 15:21:13,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:21:13,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 15:21:13,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 15:21:13,674 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:21:13,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:21:13,739 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2022-01-10 15:21:13,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 15:21:13,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-01-10 15:21:13,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:21:13,741 INFO L225 Difference]: With dead ends: 20 [2022-01-10 15:21:13,741 INFO L226 Difference]: Without dead ends: 12 [2022-01-10 15:21:13,742 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 15:21:13,743 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 15:21:13,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 15:21:13,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-01-10 15:21:13,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-01-10 15:21:13,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 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 15:21:13,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2022-01-10 15:21:13,747 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 9 [2022-01-10 15:21:13,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:21:13,747 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2022-01-10 15:21:13,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:21:13,748 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2022-01-10 15:21:13,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 15:21:13,748 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:21:13,748 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:21:13,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 15:21:13,749 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:21:13,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:21:13,750 INFO L85 PathProgramCache]: Analyzing trace with hash -694313175, now seen corresponding path program 1 times [2022-01-10 15:21:13,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:21:13,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805575891] [2022-01-10 15:21:13,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:21:13,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:21:13,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:21:13,847 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 15:21:13,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:21:13,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805575891] [2022-01-10 15:21:13,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805575891] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:21:13,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:21:13,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 15:21:13,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012805791] [2022-01-10 15:21:13,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:21:13,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 15:21:13,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:21:13,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 15:21:13,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 15:21:13,850 INFO L87 Difference]: Start difference. First operand 12 states and 14 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 15:21:13,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:21:13,890 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2022-01-10 15:21:13,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 15:21:13,891 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 15:21:13,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:21:13,891 INFO L225 Difference]: With dead ends: 24 [2022-01-10 15:21:13,891 INFO L226 Difference]: Without dead ends: 18 [2022-01-10 15:21:13,892 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 15:21:13,895 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 4 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 15:21:13,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 14 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 15:21:13,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-01-10 15:21:13,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 13. [2022-01-10 15:21:13,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 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 15:21:13,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2022-01-10 15:21:13,901 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 10 [2022-01-10 15:21:13,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:21:13,901 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2022-01-10 15:21:13,902 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 15:21:13,902 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2022-01-10 15:21:13,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 15:21:13,902 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:21:13,902 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:21:13,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 15:21:13,903 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:21:13,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:21:13,904 INFO L85 PathProgramCache]: Analyzing trace with hash -22181152, now seen corresponding path program 1 times [2022-01-10 15:21:13,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:21:13,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082950840] [2022-01-10 15:21:13,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:21:13,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:21:13,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:21:14,047 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 15:21:14,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:21:14,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082950840] [2022-01-10 15:21:14,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082950840] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 15:21:14,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104769746] [2022-01-10 15:21:14,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:21:14,048 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:21:14,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:21:14,050 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 15:21:14,052 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 15:21:14,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:21:14,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 15:21:14,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:21:14,376 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 15:21:14,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 15:21:14,438 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 15:21:14,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104769746] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 15:21:14,439 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 15:21:14,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-01-10 15:21:14,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937726118] [2022-01-10 15:21:14,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 15:21:14,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 15:21:14,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:21:14,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 15:21:14,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 15:21:14,441 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 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 15:21:14,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:21:14,677 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2022-01-10 15:21:14,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 15:21:14,679 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-01-10 15:21:14,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:21:14,679 INFO L225 Difference]: With dead ends: 36 [2022-01-10 15:21:14,679 INFO L226 Difference]: Without dead ends: 27 [2022-01-10 15:21:14,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-10 15:21:14,681 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 27 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 15:21:14,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 20 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 15:21:14,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-01-10 15:21:14,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 17. [2022-01-10 15:21:14,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 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 15:21:14,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-01-10 15:21:14,687 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2022-01-10 15:21:14,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:21:14,687 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-01-10 15:21:14,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 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 15:21:14,687 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-01-10 15:21:14,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-10 15:21:14,688 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:21:14,688 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:21:14,714 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 15:21:14,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:21:14,900 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:21:14,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:21:14,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1475938720, now seen corresponding path program 2 times [2022-01-10 15:21:14,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:21:14,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824162508] [2022-01-10 15:21:14,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:21:14,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:21:15,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:21:15,152 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 15:21:15,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:21:15,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824162508] [2022-01-10 15:21:15,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824162508] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 15:21:15,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549405134] [2022-01-10 15:21:15,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 15:21:15,153 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:21:15,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:21:15,154 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 15:21:15,158 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 15:21:15,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 15:21:15,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 15:21:15,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 15:21:15,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:21:15,475 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 15:21:15,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 15:21:15,616 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 15:21:15,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549405134] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 15:21:15,616 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 15:21:15,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-01-10 15:21:15,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31208927] [2022-01-10 15:21:15,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 15:21:15,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 15:21:15,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:21:15,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 15:21:15,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-10 15:21:15,618 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 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 15:21:21,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:21:21,181 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2022-01-10 15:21:21,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 15:21:21,181 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 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 15 [2022-01-10 15:21:21,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:21:21,182 INFO L225 Difference]: With dead ends: 53 [2022-01-10 15:21:21,182 INFO L226 Difference]: Without dead ends: 47 [2022-01-10 15:21:21,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=61, Invalid=93, Unknown=2, NotChecked=0, Total=156 [2022-01-10 15:21:21,183 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 64 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 15:21:21,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 47 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 15:21:21,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-01-10 15:21:21,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 21. [2022-01-10 15:21:21,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:21:21,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2022-01-10 15:21:21,190 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 15 [2022-01-10 15:21:21,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:21:21,190 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2022-01-10 15:21:21,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 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 15:21:21,191 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2022-01-10 15:21:21,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 15:21:21,191 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:21:21,191 INFO L514 BasicCegarLoop]: trace histogram [6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:21:21,203 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 15:21:21,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:21:21,398 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:21:21,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:21:21,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1992709152, now seen corresponding path program 3 times [2022-01-10 15:21:21,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:21:21,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460376948] [2022-01-10 15:21:21,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:21:21,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:21:21,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:21:21,662 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-10 15:21:21,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:21:21,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460376948] [2022-01-10 15:21:21,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460376948] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 15:21:21,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664093392] [2022-01-10 15:21:21,663 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-10 15:21:21,663 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:21:21,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:21:21,664 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 15:21:21,691 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 15:21:22,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-10 15:21:22,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 15:21:22,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-10 15:21:22,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:21:26,429 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-10 15:21:26,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 15:21:33,493 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-10 15:21:33,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664093392] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 15:21:33,493 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 15:21:33,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 17 [2022-01-10 15:21:33,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956120155] [2022-01-10 15:21:33,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 15:21:33,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-10 15:21:33,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:21:33,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-10 15:21:33,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2022-01-10 15:21:33,496 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:21:49,690 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 15:21:50,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:21:50,940 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2022-01-10 15:21:50,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 15:21:50,940 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-10 15:21:50,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:21:50,941 INFO L225 Difference]: With dead ends: 61 [2022-01-10 15:21:50,941 INFO L226 Difference]: Without dead ends: 47 [2022-01-10 15:21:50,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 17.6s TimeCoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2022-01-10 15:21:50,942 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 52 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-01-10 15:21:50,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 69 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 108 Invalid, 0 Unknown, 11 Unchecked, 4.9s Time] [2022-01-10 15:21:50,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-01-10 15:21:50,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 26. [2022-01-10 15:21:50,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.12) internal successors, (28), 25 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 15:21:50,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2022-01-10 15:21:50,953 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 19 [2022-01-10 15:21:50,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:21:50,954 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2022-01-10 15:21:50,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:21:50,954 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2022-01-10 15:21:50,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-10 15:21:50,954 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:21:50,955 INFO L514 BasicCegarLoop]: trace histogram [9, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:21:50,962 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 15:21:51,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:21:51,159 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:21:51,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:21:51,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1404405577, now seen corresponding path program 4 times [2022-01-10 15:21:51,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:21:51,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027738092] [2022-01-10 15:21:51,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:21:51,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:21:51,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:21:51,390 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-01-10 15:21:51,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:21:51,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027738092] [2022-01-10 15:21:51,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027738092] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 15:21:51,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140278934] [2022-01-10 15:21:51,391 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-10 15:21:51,391 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:21:51,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:21:51,394 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 15:21:51,395 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 15:21:54,367 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-10 15:21:54,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 15:21:54,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 76 conjunts are in the unsatisfiable core [2022-01-10 15:21:54,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:21:54,437 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-01-10 15:21:54,438 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 40 [2022-01-10 15:21:54,738 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-01-10 15:21:54,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:21:54,794 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 33 treesize of output 35 [2022-01-10 15:21:54,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:21:54,841 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 33 treesize of output 35 [2022-01-10 15:21:54,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:21:54,889 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 33 treesize of output 35 [2022-01-10 15:21:54,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:21:54,946 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 33 treesize of output 35 [2022-01-10 15:21:54,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:21:55,000 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 33 treesize of output 35 [2022-01-10 15:21:55,154 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 15:21:55,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 15:22:17,548 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_201 Int) (v_ArrVal_199 Int) (v_ArrVal_197 Int) (v_ArrVal_196 Int)) (let ((.cse0 (let ((.cse1 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~j~0#1Int| 1) 4294967296))) (let ((.cse2 (mod (+ .cse1 1) 4294967296))) (store (store (store (store (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~#a~0#1.baseInt|) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~#a~0#1.offsetInt| (mod (+ (* 18446744056529682432 (mod (div |c_ULTIMATE.start_ULTIMATE.start_main_~j~0#1Int| 2147483648) 2)) (* |c_ULTIMATE.start_ULTIMATE.start_main_~j~0#1Int| 4)) 18446744073709551616)) 18446744073709551616) v_ArrVal_196) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~#a~0#1.offsetInt| (mod (+ (* (mod (div .cse1 2147483648) 2) 18446744056529682432) (* .cse1 4)) 18446744073709551616)) 18446744073709551616) v_ArrVal_197) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~#a~0#1.offsetInt| (mod (+ (* (mod (div .cse2 2147483648) 2) 18446744056529682432) (* .cse2 4)) 18446744073709551616)) 18446744073709551616) v_ArrVal_199) (mod (+ (mod (let ((.cse3 (mod (+ .cse2 1) 4294967296))) (+ (* .cse3 4) (* (mod (div .cse3 2147483648) 2) 18446744056529682432))) 18446744073709551616) |c_ULTIMATE.start_ULTIMATE.start_main_~#a~0#1.offsetInt|) 18446744073709551616) v_ArrVal_201))))) (= (select (select (store |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~#a~0#1.baseInt| .cse0) |c_ULTIMATE.start_ULTIMATE.start_main_~#b~0#1.baseInt|) (mod (+ 4 |c_ULTIMATE.start_ULTIMATE.start_main_~#b~0#1.offsetInt|) 18446744073709551616)) (select .cse0 (mod |c_ULTIMATE.start_ULTIMATE.start_main_~#a~0#1.offsetInt| 18446744073709551616))))) is different from true [2022-01-10 15:22:23,571 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_201 Int) (v_ArrVal_199 Int) (v_ArrVal_197 Int) (v_ArrVal_196 Int) (v_ArrVal_194 Int)) (let ((.cse0 (let ((.cse1 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~j~0#1Int| 1) 4294967296))) (let ((.cse2 (mod (+ .cse1 1) 4294967296))) (let ((.cse3 (mod (+ .cse2 1) 4294967296))) (store (store (store (store (store (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~#a~0#1.baseInt|) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~#a~0#1.offsetInt| (mod (+ (* 18446744056529682432 (mod (div |c_ULTIMATE.start_ULTIMATE.start_main_~j~0#1Int| 2147483648) 2)) (* |c_ULTIMATE.start_ULTIMATE.start_main_~j~0#1Int| 4)) 18446744073709551616)) 18446744073709551616) v_ArrVal_194) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~#a~0#1.offsetInt| (mod (+ (* (mod (div .cse1 2147483648) 2) 18446744056529682432) (* .cse1 4)) 18446744073709551616)) 18446744073709551616) v_ArrVal_196) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~#a~0#1.offsetInt| (mod (+ (* (mod (div .cse2 2147483648) 2) 18446744056529682432) (* .cse2 4)) 18446744073709551616)) 18446744073709551616) v_ArrVal_197) (mod (+ (mod (+ (* .cse3 4) (* (mod (div .cse3 2147483648) 2) 18446744056529682432)) 18446744073709551616) |c_ULTIMATE.start_ULTIMATE.start_main_~#a~0#1.offsetInt|) 18446744073709551616) v_ArrVal_199) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~#a~0#1.offsetInt| (mod (let ((.cse4 (mod (+ .cse3 1) 4294967296))) (+ (* 18446744056529682432 (mod (div .cse4 2147483648) 2)) (* .cse4 4))) 18446744073709551616)) 18446744073709551616) v_ArrVal_201)))))) (= (select .cse0 (mod |c_ULTIMATE.start_ULTIMATE.start_main_~#a~0#1.offsetInt| 18446744073709551616)) (select (select (store |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~#a~0#1.baseInt| .cse0) |c_ULTIMATE.start_ULTIMATE.start_main_~#b~0#1.baseInt|) (mod (+ 4 |c_ULTIMATE.start_ULTIMATE.start_main_~#b~0#1.offsetInt|) 18446744073709551616))))) is different from true