/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/loop-crafted/simple_array_index_value_3.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 14:23:53,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 14:23:53,545 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 14:23:53,608 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 14:23:53,620 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 14:23:53,621 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 14:23:53,622 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 14:23:53,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 14:23:53,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 14:23:53,625 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 14:23:53,627 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 14:23:53,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 14:23:53,631 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 14:23:53,632 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 14:23:53,633 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 14:23:53,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 14:23:53,638 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 14:23:53,644 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 14:23:53,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 14:23:53,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 14:23:53,645 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 14:23:53,667 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 14:23:53,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 14:23:53,668 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 14:23:53,668 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 14:23:53,669 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 14:23:53,669 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 14:23:53,669 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 14:23:53,669 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 14:23:53,669 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 14:23:53,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 14:23:53,670 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 14:23:53,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 14:23:53,670 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 14:23:53,670 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 14:23:53,670 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 14:23:53,670 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 14:23:53,671 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 14:23:53,671 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 14:23:53,671 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 14:23:53,671 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 14:23:53,671 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 14:23:53,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 14:23:53,672 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 14:23:53,672 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 14:23:53,672 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 14:23:53,672 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 14:23:53,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 14:23:53,672 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 14:23:53,672 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 14:23:53,672 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 14:23:53,673 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 14:23:53,673 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 14:23:53,673 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 14:23:53,673 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 14:23:53,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 14:23:53,871 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 14:23:53,873 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 14:23:53,874 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 14:23:53,874 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 14:23:53,875 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_3.i [2022-01-10 14:23:53,927 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8627fb580/d3e94befdad945079d489c6e1f134f30/FLAGc2db4974c [2022-01-10 14:23:54,269 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 14:23:54,270 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_3.i [2022-01-10 14:23:54,274 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8627fb580/d3e94befdad945079d489c6e1f134f30/FLAGc2db4974c [2022-01-10 14:23:54,284 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8627fb580/d3e94befdad945079d489c6e1f134f30 [2022-01-10 14:23:54,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 14:23:54,288 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 14:23:54,290 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 14:23:54,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 14:23:54,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 14:23:54,293 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:23:54" (1/1) ... [2022-01-10 14:23:54,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2291d7dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:23:54, skipping insertion in model container [2022-01-10 14:23:54,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:23:54" (1/1) ... [2022-01-10 14:23:54,298 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 14:23:54,307 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 14:23:54,462 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_3.i[920,933] [2022-01-10 14:23:54,476 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 14:23:54,483 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 14:23:54,494 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_3.i[920,933] [2022-01-10 14:23:54,502 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 14:23:54,513 INFO L208 MainTranslator]: Completed translation [2022-01-10 14:23:54,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:23:54 WrapperNode [2022-01-10 14:23:54,513 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 14:23:54,514 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 14:23:54,514 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 14:23:54,514 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 14:23:54,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:23:54" (1/1) ... [2022-01-10 14:23:54,525 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:23:54" (1/1) ... [2022-01-10 14:23:54,538 INFO L137 Inliner]: procedures = 18, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 44 [2022-01-10 14:23:54,539 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 14:23:54,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 14:23:54,539 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 14:23:54,539 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 14:23:54,544 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:23:54" (1/1) ... [2022-01-10 14:23:54,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:23:54" (1/1) ... [2022-01-10 14:23:54,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:23:54" (1/1) ... [2022-01-10 14:23:54,553 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:23:54" (1/1) ... [2022-01-10 14:23:54,564 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:23:54" (1/1) ... [2022-01-10 14:23:54,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:23:54" (1/1) ... [2022-01-10 14:23:54,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:23:54" (1/1) ... [2022-01-10 14:23:54,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 14:23:54,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 14:23:54,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 14:23:54,574 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 14:23:54,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:23:54" (1/1) ... [2022-01-10 14:23:54,580 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 14:23:54,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:23:54,597 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 14:23:54,606 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 14:23:54,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 14:23:54,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 14:23:54,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 14:23:54,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 14:23:54,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 14:23:54,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 14:23:54,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 14:23:54,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 14:23:54,686 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 14:23:54,687 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 14:23:54,770 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 14:23:54,773 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 14:23:54,773 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 14:23:54,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:23:54 BoogieIcfgContainer [2022-01-10 14:23:54,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 14:23:54,775 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 14:23:54,775 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 14:23:54,776 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 14:23:54,778 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:23:54" (1/1) ... [2022-01-10 14:23:54,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:23:54 BasicIcfg [2022-01-10 14:23:54,866 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 14:23:54,867 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 14:23:54,867 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 14:23:54,885 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 14:23:54,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:23:54" (1/4) ... [2022-01-10 14:23:54,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f65fe56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:23:54, skipping insertion in model container [2022-01-10 14:23:54,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:23:54" (2/4) ... [2022-01-10 14:23:54,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f65fe56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:23:54, skipping insertion in model container [2022-01-10 14:23:54,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:23:54" (3/4) ... [2022-01-10 14:23:54,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f65fe56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 02:23:54, skipping insertion in model container [2022-01-10 14:23:54,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:23:54" (4/4) ... [2022-01-10 14:23:54,887 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_3.iTransformedIcfg [2022-01-10 14:23:54,890 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 14:23:54,890 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 14:23:54,929 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 14:23:54,940 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 14:23:54,940 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 14:23:54,950 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 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 14:23:54,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-10 14:23:54,954 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:23:54,954 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:23:54,954 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:23:54,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:23:54,961 INFO L85 PathProgramCache]: Analyzing trace with hash -297897797, now seen corresponding path program 1 times [2022-01-10 14:23:54,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:23:54,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923708174] [2022-01-10 14:23:54,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:23:54,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:23:55,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:23:55,130 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 14:23:55,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:23:55,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923708174] [2022-01-10 14:23:55,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923708174] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:23:55,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:23:55,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 14:23:55,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117661875] [2022-01-10 14:23:55,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:23:55,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 14:23:55,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:23:55,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 14:23:55,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 14:23:55,160 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 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 14:23:55,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:23:55,169 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2022-01-10 14:23:55,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 14:23:55,172 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 14:23:55,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:23:55,176 INFO L225 Difference]: With dead ends: 29 [2022-01-10 14:23:55,176 INFO L226 Difference]: Without dead ends: 12 [2022-01-10 14:23:55,178 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 14:23:55,183 INFO L933 BasicCegarLoop]: 18 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, 18 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 14:23:55,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:23:55,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-01-10 14:23:55,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-01-10 14:23:55,203 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 14:23:55,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2022-01-10 14:23:55,205 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 9 [2022-01-10 14:23:55,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:23:55,205 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2022-01-10 14:23:55,206 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 14:23:55,207 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2022-01-10 14:23:55,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-10 14:23:55,208 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:23:55,208 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:23:55,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 14:23:55,209 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:23:55,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:23:55,210 INFO L85 PathProgramCache]: Analyzing trace with hash 589605884, now seen corresponding path program 1 times [2022-01-10 14:23:55,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:23:55,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986765383] [2022-01-10 14:23:55,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:23:55,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:23:55,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:23:55,279 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 14:23:55,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:23:55,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986765383] [2022-01-10 14:23:55,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986765383] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:23:55,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:23:55,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:23:55,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142869861] [2022-01-10 14:23:55,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:23:55,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:23:55,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:23:55,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:23:55,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:23:55,281 INFO L87 Difference]: Start difference. First operand 12 states and 14 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 14:23:55,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:23:55,313 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2022-01-10 14:23:55,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:23:55,314 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 14:23:55,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:23:55,314 INFO L225 Difference]: With dead ends: 30 [2022-01-10 14:23:55,314 INFO L226 Difference]: Without dead ends: 21 [2022-01-10 14:23:55,314 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 14:23:55,315 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:23:55,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 17 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:23:55,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-01-10 14:23:55,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 13. [2022-01-10 14:23:55,318 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 14:23:55,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2022-01-10 14:23:55,318 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 9 [2022-01-10 14:23:55,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:23:55,319 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2022-01-10 14:23:55,319 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 14:23:55,319 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2022-01-10 14:23:55,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 14:23:55,319 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:23:55,319 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:23:55,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 14:23:55,319 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:23:55,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:23:55,320 INFO L85 PathProgramCache]: Analyzing trace with hash 977890409, now seen corresponding path program 1 times [2022-01-10 14:23:55,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:23:55,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624111950] [2022-01-10 14:23:55,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:23:55,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:23:55,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:23:55,379 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 14:23:55,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:23:55,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624111950] [2022-01-10 14:23:55,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624111950] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:23:55,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:23:55,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 14:23:55,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34990107] [2022-01-10 14:23:55,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:23:55,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 14:23:55,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:23:55,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 14:23:55,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 14:23:55,381 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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 14:23:55,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:23:55,420 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2022-01-10 14:23:55,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 14:23:55,420 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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 14:23:55,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:23:55,421 INFO L225 Difference]: With dead ends: 22 [2022-01-10 14:23:55,421 INFO L226 Difference]: Without dead ends: 20 [2022-01-10 14:23:55,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:23:55,422 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 9 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:23:55,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 32 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:23:55,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-01-10 14:23:55,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 15. [2022-01-10 14:23:55,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:23:55,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-01-10 14:23:55,425 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 10 [2022-01-10 14:23:55,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:23:55,425 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-01-10 14:23:55,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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 14:23:55,426 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-01-10 14:23:55,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 14:23:55,426 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:23:55,426 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:23:55,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 14:23:55,426 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:23:55,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:23:55,427 INFO L85 PathProgramCache]: Analyzing trace with hash 977920200, now seen corresponding path program 1 times [2022-01-10 14:23:55,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:23:55,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267733379] [2022-01-10 14:23:55,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:23:55,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:23:55,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:23:55,480 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 14:23:55,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:23:55,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267733379] [2022-01-10 14:23:55,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267733379] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 14:23:55,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88911914] [2022-01-10 14:23:55,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:23:55,482 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:23:55,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:23:55,483 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 14:23:55,497 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 14:23:55,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:23:55,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-10 14:23:55,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:23:55,606 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-01-10 14:23:55,700 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 14:23:55,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 14:23:55,758 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2022-01-10 14:23:55,761 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2022-01-10 14:23:55,795 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 14:23:55,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88911914] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 14:23:55,795 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 14:23:55,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 12 [2022-01-10 14:23:55,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841173973] [2022-01-10 14:23:55,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 14:23:55,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-10 14:23:55,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:23:55,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-10 14:23:55,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-01-10 14:23:55,797 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 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 14:23:55,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:23:55,950 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2022-01-10 14:23:55,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 14:23:55,951 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 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 14:23:55,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:23:55,953 INFO L225 Difference]: With dead ends: 50 [2022-01-10 14:23:55,953 INFO L226 Difference]: Without dead ends: 39 [2022-01-10 14:23:55,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2022-01-10 14:23:55,957 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 41 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:23:55,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 56 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:23:55,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-01-10 14:23:55,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 16. [2022-01-10 14:23:55,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 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 14:23:55,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2022-01-10 14:23:55,968 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2022-01-10 14:23:55,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:23:55,969 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2022-01-10 14:23:55,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 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 14:23:55,969 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2022-01-10 14:23:55,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 14:23:55,970 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:23:55,970 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:23:56,002 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 14:23:56,179 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 14:23:56,180 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:23:56,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:23:56,180 INFO L85 PathProgramCache]: Analyzing trace with hash 129838587, now seen corresponding path program 2 times [2022-01-10 14:23:56,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:23:56,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163045932] [2022-01-10 14:23:56,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:23:56,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:23:56,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:23:56,268 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:23:56,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:23:56,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163045932] [2022-01-10 14:23:56,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163045932] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 14:23:56,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568493060] [2022-01-10 14:23:56,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 14:23:56,271 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:23:56,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:23:56,272 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 14:23:56,273 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 14:23:56,332 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 14:23:56,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 14:23:56,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-10 14:23:56,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:23:56,356 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-01-10 14:23:56,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 14:23:56,378 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 25 treesize of output 24 [2022-01-10 14:23:56,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:23:56,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 14:23:56,536 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2022-01-10 14:23:56,539 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 118 [2022-01-10 14:23:56,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:23:56,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568493060] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 14:23:56,636 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 14:23:56,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 15 [2022-01-10 14:23:56,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069865568] [2022-01-10 14:23:56,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 14:23:56,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-10 14:23:56,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:23:56,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-10 14:23:56,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-01-10 14:23:56,637 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 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 14:23:56,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:23:56,840 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2022-01-10 14:23:56,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 14:23:56,841 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 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 11 [2022-01-10 14:23:56,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:23:56,842 INFO L225 Difference]: With dead ends: 62 [2022-01-10 14:23:56,842 INFO L226 Difference]: Without dead ends: 51 [2022-01-10 14:23:56,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2022-01-10 14:23:56,843 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 90 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:23:56,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 58 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 86 Invalid, 0 Unknown, 19 Unchecked, 0.1s Time] [2022-01-10 14:23:56,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-01-10 14:23:56,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 17. [2022-01-10 14:23:56,846 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 14:23:56,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-01-10 14:23:56,847 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2022-01-10 14:23:56,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:23:56,847 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-01-10 14:23:56,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 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 14:23:56,847 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-01-10 14:23:56,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-10 14:23:56,847 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:23:56,848 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:23:56,864 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 14:23:57,059 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 14:23:57,060 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:23:57,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:23:57,060 INFO L85 PathProgramCache]: Analyzing trace with hash -390887640, now seen corresponding path program 3 times [2022-01-10 14:23:57,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:23:57,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061188056] [2022-01-10 14:23:57,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:23:57,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:23:57,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:23:57,156 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:23:57,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:23:57,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061188056] [2022-01-10 14:23:57,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061188056] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 14:23:57,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405841893] [2022-01-10 14:23:57,158 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-10 14:23:57,158 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:23:57,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:23:57,159 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 14:23:57,160 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 14:23:57,219 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-10 14:23:57,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 14:23:57,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-10 14:23:57,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:23:57,244 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-01-10 14:23:57,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 14:23:57,265 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 25 treesize of output 24 [2022-01-10 14:23:57,309 INFO L353 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-01-10 14:23:57,311 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 52 [2022-01-10 14:23:57,459 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:23:57,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 14:23:58,746 WARN L838 $PredicateComparison]: unable to prove that (forall ((|aux_div_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int_73| Int) (v_ArrVal_56 Int) (|aux_mod_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int_73| Int)) (or (< |aux_mod_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int_73| 10000) (<= 4294967296 |aux_mod_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int_73|) (= (select (store (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~#array~0#1.baseInt|) (mod (+ (mod (+ (* 4 |aux_mod_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int_73|) 18446744073709551612 (* 17179869184 |aux_div_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int_73|)) 18446744073709551616) |c_ULTIMATE.start_ULTIMATE.start_main_~#array~0#1.offsetInt|) 18446744073709551616) v_ArrVal_56) (mod |c_ULTIMATE.start_ULTIMATE.start_main_~#array~0#1.offsetInt| 18446744073709551616)) 0))) is different from false [2022-01-10 14:24:18,605 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 49 [2022-01-10 14:24:18,608 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1186 treesize of output 1170 [2022-01-10 14:24:19,194 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-01-10 14:24:19,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405841893] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 14:24:19,194 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 14:24:19,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 10] total 19 [2022-01-10 14:24:19,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740979269] [2022-01-10 14:24:19,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 14:24:19,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-10 14:24:19,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:24:19,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-10 14:24:19,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=227, Unknown=13, NotChecked=32, Total=342 [2022-01-10 14:24:19,196 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:24:20,825 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= (select (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~#array~0#1.baseInt|) (mod |c_ULTIMATE.start_ULTIMATE.start_main_~#array~0#1.offsetInt| 18446744073709551616)) 0))) (and (forall ((|aux_div_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int_73| Int) (v_ArrVal_56 Int) (|aux_mod_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int_73| Int)) (or (< |aux_mod_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int_73| 10000) (<= 4294967296 |aux_mod_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int_73|) (= (select (store (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~#array~0#1.baseInt|) (mod (+ (mod (+ (* 4 |aux_mod_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int_73|) 18446744073709551612 (* 17179869184 |aux_div_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int_73|)) 18446744073709551616) |c_ULTIMATE.start_ULTIMATE.start_main_~#array~0#1.offsetInt|) 18446744073709551616) v_ArrVal_56) (mod |c_ULTIMATE.start_ULTIMATE.start_main_~#array~0#1.offsetInt| 18446744073709551616)) 0))) (<= |c_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int| (+ (* (div (+ |c_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int| 1) 4294967296) 4294967296) 2)) (or (exists ((|aux_div_v_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int_13_78| Int)) (= (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~#array~0#1.offsetInt| (mod (+ (* |c_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int| 4) 18446744073709551612 (* 17179869184 |aux_div_v_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int_13_78|)) 18446744073709551616)) 18446744073709551616) (mod |c_ULTIMATE.start_ULTIMATE.start_main_~#array~0#1.offsetInt| 18446744073709551616))) .cse0) (< |c_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int| 4294967296) (= |c_ULTIMATE.start_ULTIMATE.start_main_~#array~0#1.offsetInt| 0) .cse0 (<= |c_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int| 3) (<= 0 |c_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int|))) is different from false [2022-01-10 14:24:40,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:24:40,394 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2022-01-10 14:24:40,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-10 14:24:40,394 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-01-10 14:24:40,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:24:40,395 INFO L225 Difference]: With dead ends: 75 [2022-01-10 14:24:40,395 INFO L226 Difference]: Without dead ends: 64 [2022-01-10 14:24:40,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 42.2s TimeCoverageRelationStatistics Valid=208, Invalid=767, Unknown=25, NotChecked=122, Total=1122 [2022-01-10 14:24:40,396 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 167 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 78 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 14:24:40,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 120 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 164 Invalid, 0 Unknown, 78 Unchecked, 0.2s Time] [2022-01-10 14:24:40,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-01-10 14:24:40,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 18. [2022-01-10 14:24:40,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 14:24:40,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2022-01-10 14:24:40,400 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 12 [2022-01-10 14:24:40,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:24:40,400 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2022-01-10 14:24:40,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:24:40,400 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-01-10 14:24:40,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-10 14:24:40,400 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:24:40,400 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:24:40,427 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 14:24:40,616 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 14:24:40,617 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:24:40,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:24:40,617 INFO L85 PathProgramCache]: Analyzing trace with hash 646468507, now seen corresponding path program 4 times [2022-01-10 14:24:40,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:24:40,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118874234] [2022-01-10 14:24:40,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:24:40,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:24:40,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:24:40,687 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:24:40,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:24:40,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118874234] [2022-01-10 14:24:40,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118874234] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 14:24:40,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443894598] [2022-01-10 14:24:40,688 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-10 14:24:40,688 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:24:40,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:24:40,689 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 14:24:40,690 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 14:24:40,776 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-10 14:24:40,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 14:24:40,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 36 conjunts are in the unsatisfiable core [2022-01-10 14:24:40,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:24:40,802 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-01-10 14:24:40,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 14:24:40,824 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 25 treesize of output 24 [2022-01-10 14:24:40,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 14:24:40,844 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 25 treesize of output 24 [2022-01-10 14:24:40,876 INFO L353 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-01-10 14:24:40,877 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 52 [2022-01-10 14:24:40,998 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:24:40,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 14:24:43,082 WARN L838 $PredicateComparison]: unable to prove that (forall ((|aux_div_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int_73| Int) (|aux_mod_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int_73| Int) (v_ArrVal_84 Int)) (or (< |aux_mod_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int_73| 10000) (<= 4294967296 |aux_mod_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int_73|) (= (select (store (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~#array~0#1.baseInt|) (mod (+ (mod (+ (* 4 |aux_mod_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int_73|) 18446744073709551612 (* 17179869184 |aux_div_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int_73|)) 18446744073709551616) |c_ULTIMATE.start_ULTIMATE.start_main_~#array~0#1.offsetInt|) 18446744073709551616) v_ArrVal_84) (mod |c_ULTIMATE.start_ULTIMATE.start_main_~#array~0#1.offsetInt| 18446744073709551616)) 0))) is different from false [2022-01-10 14:24:49,637 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((|aux_div_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int_73| Int) (v_ArrVal_80 Int) (v_ArrVal_82 Int) (|aux_mod_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int_73| Int) (v_ArrVal_84 Int)) (or (< |aux_mod_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int_73| 10000) (<= 4294967296 |aux_mod_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int_73|) (= (select (store (store (store (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~#array~0#1.baseInt|) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~#array~0#1.offsetInt| (mod (* |c_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int| 4) 18446744073709551616)) 18446744073709551616) v_ArrVal_80) (mod (+ (mod (* (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int| 1) 4294967296) 4) 18446744073709551616) |c_ULTIMATE.start_ULTIMATE.start_main_~#array~0#1.offsetInt|) 18446744073709551616) v_ArrVal_82) (mod (+ (mod (+ (* 4 |aux_mod_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int_73|) 18446744073709551612 (* 17179869184 |aux_div_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int_73|)) 18446744073709551616) |c_ULTIMATE.start_ULTIMATE.start_main_~#array~0#1.offsetInt|) 18446744073709551616) v_ArrVal_84) (mod |c_ULTIMATE.start_ULTIMATE.start_main_~#array~0#1.offsetInt| 18446744073709551616)) 0))) (not (< (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int| 1) 4294967296) 10000)) (not (< |c_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int| 10000))) is different from false [2022-01-10 14:24:49,654 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 68 [2022-01-10 14:24:49,657 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1346 treesize of output 1338 [2022-01-10 14:24:52,626 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2022-01-10 14:24:52,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443894598] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 14:24:52,626 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 14:24:52,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 11] total 22 [2022-01-10 14:24:52,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276789692] [2022-01-10 14:24:52,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 14:24:52,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-10 14:24:52,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:24:52,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-10 14:24:52,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=306, Unknown=2, NotChecked=74, Total=462 [2022-01-10 14:24:52,627 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 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 14:24:53,571 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_ULTIMATE.start_main_~#array~0#1.offsetInt| 0) (forall ((|aux_div_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int_73| Int) (|aux_mod_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int_73| Int) (v_ArrVal_84 Int)) (or (< |aux_mod_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int_73| 10000) (<= 4294967296 |aux_mod_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int_73|) (= (select (store (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~#array~0#1.baseInt|) (mod (+ (mod (+ (* 4 |aux_mod_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int_73|) 18446744073709551612 (* 17179869184 |aux_div_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int_73|)) 18446744073709551616) |c_ULTIMATE.start_ULTIMATE.start_main_~#array~0#1.offsetInt|) 18446744073709551616) v_ArrVal_84) (mod |c_ULTIMATE.start_ULTIMATE.start_main_~#array~0#1.offsetInt| 18446744073709551616)) 0))) (= |c_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int| 2) (= (select (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~#array~0#1.baseInt|) (mod |c_ULTIMATE.start_ULTIMATE.start_main_~#array~0#1.offsetInt| 18446744073709551616)) 0)) is different from false [2022-01-10 14:24:54,505 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= (select (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~#array~0#1.baseInt|) (mod |c_ULTIMATE.start_ULTIMATE.start_main_~#array~0#1.offsetInt| 18446744073709551616)) 0))) (and (or (exists ((|aux_div_v_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int_22_78| Int)) (= (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~#array~0#1.offsetInt| (mod (+ (* |c_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int| 4) 18446744073709551612 (* 17179869184 |aux_div_v_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int_22_78|)) 18446744073709551616)) 18446744073709551616) (mod |c_ULTIMATE.start_ULTIMATE.start_main_~#array~0#1.offsetInt| 18446744073709551616))) .cse0) (<= |c_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int| 4) (< |c_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int| 4294967296) (= |c_ULTIMATE.start_ULTIMATE.start_main_~#array~0#1.offsetInt| 0) (<= |c_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int| (+ (* (div (+ |c_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int| 1) 4294967296) 4294967296) 3)) (forall ((|aux_div_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int_73| Int) (|aux_mod_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int_73| Int) (v_ArrVal_84 Int)) (or (< |aux_mod_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int_73| 10000) (<= 4294967296 |aux_mod_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int_73|) (= (select (store (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~#array~0#1.baseInt|) (mod (+ (mod (+ (* 4 |aux_mod_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int_73|) 18446744073709551612 (* 17179869184 |aux_div_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int_73|)) 18446744073709551616) |c_ULTIMATE.start_ULTIMATE.start_main_~#array~0#1.offsetInt|) 18446744073709551616) v_ArrVal_84) (mod |c_ULTIMATE.start_ULTIMATE.start_main_~#array~0#1.offsetInt| 18446744073709551616)) 0))) .cse0 (<= 0 |c_ULTIMATE.start_ULTIMATE.start_main_~index~0#1Int|))) is different from false [2022-01-10 14:24:54,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:24:54,967 INFO L93 Difference]: Finished difference Result 87 states and 96 transitions. [2022-01-10 14:24:54,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-10 14:24:54,968 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-01-10 14:24:54,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:24:54,968 INFO L225 Difference]: With dead ends: 87 [2022-01-10 14:24:54,968 INFO L226 Difference]: Without dead ends: 76 [2022-01-10 14:24:54,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=259, Invalid=1085, Unknown=4, NotChecked=292, Total=1640 [2022-01-10 14:24:54,970 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 142 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 138 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 14:24:54,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 181 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 212 Invalid, 0 Unknown, 138 Unchecked, 0.2s Time] [2022-01-10 14:24:54,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-01-10 14:24:54,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 19. [2022-01-10 14:24:54,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 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 14:24:54,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-01-10 14:24:54,974 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 13 [2022-01-10 14:24:54,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:24:54,974 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-01-10 14:24:54,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 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 14:24:54,975 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-01-10 14:24:54,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 14:24:54,975 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:24:54,975 INFO L514 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:24:54,984 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 14:24:55,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:24:55,176 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:24:55,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:24:55,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1555229304, now seen corresponding path program 5 times [2022-01-10 14:24:55,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:24:55,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471260560] [2022-01-10 14:24:55,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:24:55,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:24:55,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:24:55,250 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:24:55,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:24:55,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471260560] [2022-01-10 14:24:55,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471260560] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 14:24:55,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502065830] [2022-01-10 14:24:55,251 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-10 14:24:55,251 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:24:55,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:24:55,252 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 14:24:55,252 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 14:24:55,788 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-10 14:24:55,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 14:24:55,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 48 conjunts are in the unsatisfiable core [2022-01-10 14:24:55,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:24:55,825 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-01-10 14:24:55,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 14:24:55,892 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 71 treesize of output 50 [2022-01-10 14:24:56,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 14:24:56,005 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 77 treesize of output 53 [2022-01-10 14:24:56,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 14:24:56,188 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 83 treesize of output 56 [2022-01-10 14:24:56,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 14:24:56,430 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 78 treesize of output 51 [2022-01-10 14:24:58,101 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 14:24:58,104 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 14:24:58,104 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 84 treesize of output 23 [2022-01-10 14:24:58,156 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:24:58,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 14:25:09,403 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 102 [2022-01-10 14:25:09,411 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 14:25:09,414 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 14:25:09,415 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 14:25:09,416 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 266 treesize of output 258 [2022-01-10 14:25:09,676 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:25:09,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502065830] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 14:25:09,677 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 14:25:09,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 24 [2022-01-10 14:25:09,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662088306] [2022-01-10 14:25:09,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 14:25:09,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-10 14:25:09,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:25:09,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-10 14:25:09,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=454, Unknown=1, NotChecked=0, Total=552 [2022-01-10 14:25:09,678 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 24 states, 24 states have (on average 1.5) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:25:11,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:25:11,550 INFO L93 Difference]: Finished difference Result 93 states and 103 transitions. [2022-01-10 14:25:11,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-10 14:25:11,551 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.5) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-01-10 14:25:11,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:25:11,551 INFO L225 Difference]: With dead ends: 93 [2022-01-10 14:25:11,551 INFO L226 Difference]: Without dead ends: 82 [2022-01-10 14:25:11,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 14 SyntacticMatches, 7 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=419, Invalid=1836, Unknown=1, NotChecked=0, Total=2256 [2022-01-10 14:25:11,553 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 304 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 177 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 14:25:11,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 172 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 172 Invalid, 0 Unknown, 177 Unchecked, 0.2s Time] [2022-01-10 14:25:11,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-01-10 14:25:11,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 22. [2022-01-10 14:25:11,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 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 14:25:11,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2022-01-10 14:25:11,558 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 14 [2022-01-10 14:25:11,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:25:11,558 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2022-01-10 14:25:11,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.5) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:25:11,559 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2022-01-10 14:25:11,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-10 14:25:11,559 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:25:11,559 INFO L514 BasicCegarLoop]: trace histogram [6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:25:11,575 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 14:25:11,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:25:11,763 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:25:11,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier