/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_SUM.epf -i ../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_3.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 02:01:26,245 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 02:01:26,246 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 02:01:26,296 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-11 02:01:26,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 02:01:26,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 02:01:26,312 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 02:01:26,314 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 02:01:26,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 02:01:26,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 02:01:26,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 02:01:26,321 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 02:01:26,322 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 02:01:26,323 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 02:01:26,324 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 02:01:26,324 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 02:01:26,329 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-11 02:01:26,335 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 02:01:26,335 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 02:01:26,336 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 02:01:26,337 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 02:01:26,360 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 02:01:26,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 02:01:26,361 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 02:01:26,361 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 02:01:26,361 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 02:01:26,362 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 02:01:26,362 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 02:01:26,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 02:01:26,362 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 02:01:26,362 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 02:01:26,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 02:01:26,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 02:01:26,363 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 02:01:26,363 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 02:01:26,363 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 02:01:26,363 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 02:01:26,363 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 02:01:26,363 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 02:01:26,363 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 02:01:26,363 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 02:01:26,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 02:01:26,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 02:01:26,364 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 02:01:26,364 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 02:01:26,364 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 02:01:26,364 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 02:01:26,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 02:01:26,364 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 02:01:26,364 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 02:01:26,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 02:01:26,364 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 02:01:26,364 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 02:01:26,365 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 02:01:26,365 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 02:01:26,549 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 02:01:26,569 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 02:01:26,570 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 02:01:26,571 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 02:01:26,571 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 02:01:26,572 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_3.i [2022-01-11 02:01:26,615 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18983ce4b/bc6e70bd983343a39e0aa241c386f4b7/FLAGeb1dcb4db [2022-01-11 02:01:26,982 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 02:01:26,982 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_3.i [2022-01-11 02:01:26,989 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18983ce4b/bc6e70bd983343a39e0aa241c386f4b7/FLAGeb1dcb4db [2022-01-11 02:01:27,407 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18983ce4b/bc6e70bd983343a39e0aa241c386f4b7 [2022-01-11 02:01:27,409 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 02:01:27,410 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 02:01:27,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 02:01:27,412 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 02:01:27,414 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 02:01:27,414 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:01:27" (1/1) ... [2022-01-11 02:01:27,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@119ab6d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:01:27, skipping insertion in model container [2022-01-11 02:01:27,415 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:01:27" (1/1) ... [2022-01-11 02:01:27,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 02:01:27,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 02:01:27,541 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] [2022-01-11 02:01:27,548 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 02:01:27,554 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 02:01:27,562 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] [2022-01-11 02:01:27,565 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 02:01:27,574 INFO L208 MainTranslator]: Completed translation [2022-01-11 02:01:27,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:01:27 WrapperNode [2022-01-11 02:01:27,574 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 02:01:27,575 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 02:01:27,575 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 02:01:27,575 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 02:01:27,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:01:27" (1/1) ... [2022-01-11 02:01:27,584 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:01:27" (1/1) ... [2022-01-11 02:01:27,594 INFO L137 Inliner]: procedures = 18, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 44 [2022-01-11 02:01:27,595 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 02:01:27,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 02:01:27,595 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 02:01:27,595 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 02:01:27,600 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:01:27" (1/1) ... [2022-01-11 02:01:27,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:01:27" (1/1) ... [2022-01-11 02:01:27,601 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:01:27" (1/1) ... [2022-01-11 02:01:27,601 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:01:27" (1/1) ... [2022-01-11 02:01:27,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:01:27" (1/1) ... [2022-01-11 02:01:27,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:01:27" (1/1) ... [2022-01-11 02:01:27,608 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:01:27" (1/1) ... [2022-01-11 02:01:27,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 02:01:27,609 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 02:01:27,610 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 02:01:27,610 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 02:01:27,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:01:27" (1/1) ... [2022-01-11 02:01:27,615 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 02:01:27,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:01:27,650 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) [2022-01-11 02:01:27,652 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 [2022-01-11 02:01:27,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 02:01:27,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 02:01:27,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-11 02:01:27,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-11 02:01:27,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 02:01:27,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 02:01:27,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-11 02:01:27,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-11 02:01:27,728 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 02:01:27,729 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 02:01:27,851 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 02:01:27,863 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 02:01:27,863 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-11 02:01:27,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:01:27 BoogieIcfgContainer [2022-01-11 02:01:27,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 02:01:27,868 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 02:01:27,868 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 02:01:27,874 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 02:01:27,876 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:01:27" (1/1) ... [2022-01-11 02:01:27,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:01:27 BasicIcfg [2022-01-11 02:01:27,917 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 02:01:27,918 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 02:01:27,919 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 02:01:27,922 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 02:01:27,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 02:01:27" (1/4) ... [2022-01-11 02:01:27,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f29c2c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:01:27, skipping insertion in model container [2022-01-11 02:01:27,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:01:27" (2/4) ... [2022-01-11 02:01:27,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f29c2c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:01:27, skipping insertion in model container [2022-01-11 02:01:27,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:01:27" (3/4) ... [2022-01-11 02:01:27,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f29c2c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 02:01:27, skipping insertion in model container [2022-01-11 02:01:27,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:01:27" (4/4) ... [2022-01-11 02:01:27,929 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_3.iTransformedIcfg [2022-01-11 02:01:27,932 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 02:01:27,932 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 02:01:27,977 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 02:01:27,981 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 [2022-01-11 02:01:27,981 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 02:01:27,997 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) [2022-01-11 02:01:28,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-11 02:01:28,000 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:01:28,001 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:01:28,001 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:01:28,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:01:28,004 INFO L85 PathProgramCache]: Analyzing trace with hash -297897797, now seen corresponding path program 1 times [2022-01-11 02:01:28,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:01:28,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542206190] [2022-01-11 02:01:28,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:01:28,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:01:28,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:01:28,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:01:28,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:01:28,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542206190] [2022-01-11 02:01:28,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542206190] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:01:28,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:01:28,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 02:01:28,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643857451] [2022-01-11 02:01:28,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:01:28,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 02:01:28,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:01:28,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 02:01:28,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 02:01:28,195 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) [2022-01-11 02:01:28,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:01:28,207 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2022-01-11 02:01:28,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 02:01:28,208 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 [2022-01-11 02:01:28,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:01:28,212 INFO L225 Difference]: With dead ends: 29 [2022-01-11 02:01:28,213 INFO L226 Difference]: Without dead ends: 12 [2022-01-11 02:01:28,215 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 [2022-01-11 02:01:28,218 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 [2022-01-11 02:01:28,219 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] [2022-01-11 02:01:28,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-01-11 02:01:28,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-01-11 02:01:28,245 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) [2022-01-11 02:01:28,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2022-01-11 02:01:28,247 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 9 [2022-01-11 02:01:28,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:01:28,248 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2022-01-11 02:01:28,249 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) [2022-01-11 02:01:28,249 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2022-01-11 02:01:28,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-11 02:01:28,250 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:01:28,250 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:01:28,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 02:01:28,251 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:01:28,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:01:28,254 INFO L85 PathProgramCache]: Analyzing trace with hash 589605884, now seen corresponding path program 1 times [2022-01-11 02:01:28,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:01:28,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970793480] [2022-01-11 02:01:28,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:01:28,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:01:28,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:01:28,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:01:28,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:01:28,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970793480] [2022-01-11 02:01:28,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970793480] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:01:28,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:01:28,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 02:01:28,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915871998] [2022-01-11 02:01:28,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:01:28,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 02:01:28,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:01:28,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 02:01:28,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 02:01:28,328 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) [2022-01-11 02:01:28,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:01:28,359 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2022-01-11 02:01:28,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 02:01:28,360 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 [2022-01-11 02:01:28,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:01:28,360 INFO L225 Difference]: With dead ends: 30 [2022-01-11 02:01:28,360 INFO L226 Difference]: Without dead ends: 21 [2022-01-11 02:01:28,363 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 [2022-01-11 02:01:28,364 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 [2022-01-11 02:01:28,364 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] [2022-01-11 02:01:28,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-01-11 02:01:28,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 13. [2022-01-11 02:01:28,366 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) [2022-01-11 02:01:28,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2022-01-11 02:01:28,367 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 9 [2022-01-11 02:01:28,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:01:28,367 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2022-01-11 02:01:28,367 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) [2022-01-11 02:01:28,367 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2022-01-11 02:01:28,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-11 02:01:28,368 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:01:28,368 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:01:28,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 02:01:28,368 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:01:28,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:01:28,369 INFO L85 PathProgramCache]: Analyzing trace with hash 977890409, now seen corresponding path program 1 times [2022-01-11 02:01:28,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:01:28,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381579371] [2022-01-11 02:01:28,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:01:28,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:01:28,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:01:28,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-11 02:01:28,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:01:28,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381579371] [2022-01-11 02:01:28,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381579371] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:01:28,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:01:28,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 02:01:28,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078534728] [2022-01-11 02:01:28,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:01:28,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 02:01:28,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:01:28,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 02:01:28,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 02:01:28,462 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) [2022-01-11 02:01:28,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:01:28,516 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2022-01-11 02:01:28,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 02:01:28,517 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 [2022-01-11 02:01:28,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:01:28,517 INFO L225 Difference]: With dead ends: 22 [2022-01-11 02:01:28,517 INFO L226 Difference]: Without dead ends: 20 [2022-01-11 02:01:28,517 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 [2022-01-11 02:01:28,518 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 [2022-01-11 02:01:28,519 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] [2022-01-11 02:01:28,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-01-11 02:01:28,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 15. [2022-01-11 02:01:28,521 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) [2022-01-11 02:01:28,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-01-11 02:01:28,521 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 10 [2022-01-11 02:01:28,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:01:28,521 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-01-11 02:01:28,522 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) [2022-01-11 02:01:28,522 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-01-11 02:01:28,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-11 02:01:28,522 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:01:28,522 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:01:28,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 02:01:28,522 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:01:28,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:01:28,523 INFO L85 PathProgramCache]: Analyzing trace with hash 977920200, now seen corresponding path program 1 times [2022-01-11 02:01:28,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:01:28,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635620823] [2022-01-11 02:01:28,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:01:28,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:01:28,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:01:28,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:01:28,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:01:28,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635620823] [2022-01-11 02:01:28,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635620823] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 02:01:28,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357070899] [2022-01-11 02:01:28,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:01:28,610 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:01:28,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:01:28,627 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) [2022-01-11 02:01:28,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-11 02:01:28,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:01:28,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-11 02:01:28,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:01:28,766 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 [2022-01-11 02:01:28,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:01:28,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:01:28,928 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 [2022-01-11 02:01:28,931 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 [2022-01-11 02:01:28,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:01:28,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357070899] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 02:01:28,958 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 02:01:28,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 12 [2022-01-11 02:01:28,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873691826] [2022-01-11 02:01:28,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 02:01:28,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-11 02:01:28,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:01:28,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-11 02:01:28,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-01-11 02:01:28,960 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) [2022-01-11 02:01:29,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:01:29,110 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2022-01-11 02:01:29,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-11 02:01:29,110 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 [2022-01-11 02:01:29,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:01:29,114 INFO L225 Difference]: With dead ends: 50 [2022-01-11 02:01:29,114 INFO L226 Difference]: Without dead ends: 39 [2022-01-11 02:01:29,117 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 [2022-01-11 02:01:29,133 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 [2022-01-11 02:01:29,134 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] [2022-01-11 02:01:29,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-01-11 02:01:29,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 16. [2022-01-11 02:01:29,138 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) [2022-01-11 02:01:29,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2022-01-11 02:01:29,139 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2022-01-11 02:01:29,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:01:29,139 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2022-01-11 02:01:29,139 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) [2022-01-11 02:01:29,139 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2022-01-11 02:01:29,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-11 02:01:29,140 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:01:29,140 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:01:29,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-11 02:01:29,355 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 [2022-01-11 02:01:29,355 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:01:29,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:01:29,356 INFO L85 PathProgramCache]: Analyzing trace with hash 129838587, now seen corresponding path program 2 times [2022-01-11 02:01:29,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:01:29,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838426162] [2022-01-11 02:01:29,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:01:29,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:01:29,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:01:29,406 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:01:29,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:01:29,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838426162] [2022-01-11 02:01:29,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838426162] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 02:01:29,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589616218] [2022-01-11 02:01:29,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-11 02:01:29,407 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:01:29,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:01:29,408 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) [2022-01-11 02:01:29,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-11 02:01:29,460 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-11 02:01:29,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 02:01:29,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-11 02:01:29,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:01:29,491 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 [2022-01-11 02:01:29,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 02:01:29,514 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 [2022-01-11 02:01:29,582 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:01:29,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:01:29,683 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 [2022-01-11 02:01:29,691 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 [2022-01-11 02:01:29,785 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:01:29,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589616218] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 02:01:29,786 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 02:01:29,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 15 [2022-01-11 02:01:29,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811311769] [2022-01-11 02:01:29,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 02:01:29,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-11 02:01:29,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:01:29,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-11 02:01:29,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-01-11 02:01:29,787 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) [2022-01-11 02:01:30,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:01:30,048 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2022-01-11 02:01:30,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-11 02:01:30,049 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 [2022-01-11 02:01:30,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:01:30,049 INFO L225 Difference]: With dead ends: 62 [2022-01-11 02:01:30,049 INFO L226 Difference]: Without dead ends: 51 [2022-01-11 02:01:30,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2022-01-11 02:01:30,050 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 [2022-01-11 02:01:30,051 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] [2022-01-11 02:01:30,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-01-11 02:01:30,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 17. [2022-01-11 02:01:30,054 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) [2022-01-11 02:01:30,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-01-11 02:01:30,054 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2022-01-11 02:01:30,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:01:30,054 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-01-11 02:01:30,054 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) [2022-01-11 02:01:30,054 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-01-11 02:01:30,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-11 02:01:30,055 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:01:30,055 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:01:30,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-11 02:01:30,271 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 [2022-01-11 02:01:30,272 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:01:30,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:01:30,272 INFO L85 PathProgramCache]: Analyzing trace with hash -390887640, now seen corresponding path program 3 times [2022-01-11 02:01:30,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:01:30,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924272821] [2022-01-11 02:01:30,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:01:30,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:01:30,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:01:30,353 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:01:30,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:01:30,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924272821] [2022-01-11 02:01:30,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924272821] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 02:01:30,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964506959] [2022-01-11 02:01:30,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-11 02:01:30,354 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:01:30,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:01:30,355 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) [2022-01-11 02:01:30,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-11 02:01:30,417 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-11 02:01:30,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 02:01:30,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-11 02:01:30,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:01:30,443 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 [2022-01-11 02:01:30,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 02:01:30,459 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 [2022-01-11 02:01:30,504 INFO L353 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-01-11 02:01:30,505 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 [2022-01-11 02:01:30,667 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:01:30,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:01:31,982 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 [2022-01-11 02:01:53,244 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 [2022-01-11 02:01:53,252 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 [2022-01-11 02:01:54,201 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-01-11 02:01:54,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964506959] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 02:01:54,201 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 02:01:54,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 10] total 19 [2022-01-11 02:01:54,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405812414] [2022-01-11 02:01:54,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 02:01:54,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-11 02:01:54,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:01:54,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-11 02:01:54,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=227, Unknown=13, NotChecked=32, Total=342 [2022-01-11 02:01:54,203 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) [2022-01-11 02:01:55,104 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 [2022-01-11 02:02:12,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:02:12,200 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2022-01-11 02:02:12,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-11 02:02:12,200 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 [2022-01-11 02:02:12,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:02:12,201 INFO L225 Difference]: With dead ends: 75 [2022-01-11 02:02:12,201 INFO L226 Difference]: Without dead ends: 64 [2022-01-11 02:02:12,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 40.4s TimeCoverageRelationStatistics Valid=208, Invalid=769, Unknown=23, NotChecked=122, Total=1122 [2022-01-11 02:02:12,202 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, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 02:02:12,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 120 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 164 Invalid, 0 Unknown, 78 Unchecked, 0.1s Time] [2022-01-11 02:02:12,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-01-11 02:02:12,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 18. [2022-01-11 02:02:12,209 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) [2022-01-11 02:02:12,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2022-01-11 02:02:12,209 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 12 [2022-01-11 02:02:12,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:02:12,210 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2022-01-11 02:02:12,210 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) [2022-01-11 02:02:12,210 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-01-11 02:02:12,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-11 02:02:12,210 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:02:12,210 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:02:12,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-11 02:02:12,411 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 [2022-01-11 02:02:12,411 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:02:12,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:02:12,412 INFO L85 PathProgramCache]: Analyzing trace with hash 646468507, now seen corresponding path program 4 times [2022-01-11 02:02:12,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:02:12,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200369184] [2022-01-11 02:02:12,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:02:12,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:02:12,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:02:12,502 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:02:12,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:02:12,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200369184] [2022-01-11 02:02:12,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200369184] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 02:02:12,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244510413] [2022-01-11 02:02:12,503 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-11 02:02:12,503 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:02:12,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:02:12,504 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) [2022-01-11 02:02:12,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-11 02:02:12,589 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-11 02:02:12,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 02:02:12,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 36 conjunts are in the unsatisfiable core [2022-01-11 02:02:12,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:02:12,613 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 [2022-01-11 02:02:12,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 02:02:12,635 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 [2022-01-11 02:02:12,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 02:02:12,654 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 [2022-01-11 02:02:12,685 INFO L353 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-01-11 02:02:12,685 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 [2022-01-11 02:02:12,872 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:02:12,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:02:14,964 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 [2022-01-11 02:02:24,030 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 [2022-01-11 02:02:24,034 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 [2022-01-11 02:02:27,900 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-01-11 02:02:27,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244510413] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 02:02:27,900 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 02:02:27,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 11] total 22 [2022-01-11 02:02:27,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527477241] [2022-01-11 02:02:27,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 02:02:27,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-11 02:02:27,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:02:27,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-11 02:02:27,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=341, Unknown=1, NotChecked=38, Total=462 [2022-01-11 02:02:27,902 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) [2022-01-11 02:02:28,890 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 [2022-01-11 02:02:29,930 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 [2022-01-11 02:02:31,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:02:31,520 INFO L93 Difference]: Finished difference Result 87 states and 96 transitions. [2022-01-11 02:02:31,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-11 02:02:31,520 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 [2022-01-11 02:02:31,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:02:31,521 INFO L225 Difference]: With dead ends: 87 [2022-01-11 02:02:31,521 INFO L226 Difference]: Without dead ends: 76 [2022-01-11 02:02:31,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=261, Invalid=1154, Unknown=3, NotChecked=222, Total=1640 [2022-01-11 02:02:31,523 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 142 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 144 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 02:02:31,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 195 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 210 Invalid, 0 Unknown, 144 Unchecked, 0.1s Time] [2022-01-11 02:02:31,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-01-11 02:02:31,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 19. [2022-01-11 02:02:31,527 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) [2022-01-11 02:02:31,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-01-11 02:02:31,527 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 13 [2022-01-11 02:02:31,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:02:31,527 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-01-11 02:02:31,527 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) [2022-01-11 02:02:31,527 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-01-11 02:02:31,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-11 02:02:31,528 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:02:31,528 INFO L514 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:02:31,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-11 02:02:31,732 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 [2022-01-11 02:02:31,732 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:02:31,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:02:31,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1555229304, now seen corresponding path program 5 times [2022-01-11 02:02:31,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:02:31,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664836637] [2022-01-11 02:02:31,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:02:31,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:02:31,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:02:31,849 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:02:31,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:02:31,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664836637] [2022-01-11 02:02:31,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664836637] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 02:02:31,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234309547] [2022-01-11 02:02:31,850 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-11 02:02:31,850 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:02:31,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:02:31,864 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) [2022-01-11 02:02:31,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-11 02:02:32,436 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-11 02:02:32,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 02:02:32,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 48 conjunts are in the unsatisfiable core [2022-01-11 02:02:32,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:02:32,480 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 [2022-01-11 02:02:32,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 02:02:32,573 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 [2022-01-11 02:02:32,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 02:02:32,709 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 [2022-01-11 02:02:32,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 02:02:32,850 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 [2022-01-11 02:02:33,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 02:02:33,066 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 [2022-01-11 02:02:34,590 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-11 02:02:34,593 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-11 02:02:34,593 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 [2022-01-11 02:02:34,641 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:02:34,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:02:42,954 WARN L228 SmtUtils]: Spent 5.21s on a formula simplification that was a NOOP. DAG size: 50 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-11 02:02:42,985 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 [2022-01-11 02:02:42,995 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-11 02:02:42,999 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-11 02:02:43,002 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-11 02:02:43,004 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 [2022-01-11 02:02:43,308 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:02:43,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234309547] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 02:02:43,308 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 02:02:43,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 24 [2022-01-11 02:02:43,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719766419] [2022-01-11 02:02:43,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 02:02:43,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-11 02:02:43,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:02:43,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-11 02:02:43,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2022-01-11 02:02:43,312 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) [2022-01-11 02:02:45,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:02:45,178 INFO L93 Difference]: Finished difference Result 93 states and 103 transitions. [2022-01-11 02:02:45,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-11 02:02:45,178 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 [2022-01-11 02:02:45,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:02:45,179 INFO L225 Difference]: With dead ends: 93 [2022-01-11 02:02:45,179 INFO L226 Difference]: Without dead ends: 82 [2022-01-11 02:02:45,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 13 SyntacticMatches, 11 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=419, Invalid=1837, Unknown=0, NotChecked=0, Total=2256 [2022-01-11 02:02:45,180 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 312 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 114 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 02:02:45,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 165 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 172 Invalid, 0 Unknown, 114 Unchecked, 0.2s Time] [2022-01-11 02:02:45,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-01-11 02:02:45,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 22. [2022-01-11 02:02:45,187 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) [2022-01-11 02:02:45,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2022-01-11 02:02:45,187 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 14 [2022-01-11 02:02:45,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:02:45,187 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2022-01-11 02:02:45,187 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) [2022-01-11 02:02:45,188 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2022-01-11 02:02:45,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-11 02:02:45,188 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:02:45,188 INFO L514 BasicCegarLoop]: trace histogram [6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:02:45,200 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-01-11 02:02:45,388 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 [2022-01-11 02:02:45,389 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:02:45,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:02:45,389 INFO L85 PathProgramCache]: Analyzing trace with hash -643280491, now seen corresponding path program 1 times [2022-01-11 02:02:45,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:02:45,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839546411] [2022-01-11 02:02:45,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:02:45,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:02:45,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:02:45,477 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-11 02:02:45,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:02:45,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839546411] [2022-01-11 02:02:45,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839546411] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 02:02:45,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393529117] [2022-01-11 02:02:45,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:02:45,477 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:02:45,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:02:45,488 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:02:45,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-11 02:02:45,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:02:45,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 54 conjunts are in the unsatisfiable core [2022-01-11 02:02:45,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:02:45,749 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 15 treesize of output 11 [2022-01-11 02:02:45,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 02:02:45,770 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 27 treesize of output 26 [2022-01-11 02:02:45,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 02:02:45,789 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 27 treesize of output 26 [2022-01-11 02:02:45,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 02:02:45,811 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 27 treesize of output 26 [2022-01-11 02:02:45,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 02:02:45,829 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 27 treesize of output 26 [2022-01-11 02:02:46,016 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:02:46,016 INFO L328 TraceCheckSpWp]: Computing backward predicates...