/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/ldv-regression/test22-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 05:20:21,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 05:20:21,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 05:20:21,973 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-11 05:20:21,995 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 05:20:21,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 05:20:21,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 05:20:21,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 05:20:21,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 05:20:21,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 05:20:21,999 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 05:20:22,000 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 05:20:22,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 05:20:22,007 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 05:20:22,008 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 05:20:22,008 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 05:20:22,010 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-11 05:20:22,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 05:20:22,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 05:20:22,016 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 05:20:22,021 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 05:20:22,045 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 05:20:22,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 05:20:22,045 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 05:20:22,046 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 05:20:22,046 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 05:20:22,047 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 05:20:22,047 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 05:20:22,047 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 05:20:22,047 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 05:20:22,047 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 05:20:22,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 05:20:22,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 05:20:22,048 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 05:20:22,048 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 05:20:22,048 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 05:20:22,048 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 05:20:22,048 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 05:20:22,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 05:20:22,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 05:20:22,049 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 05:20:22,049 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 05:20:22,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 05:20:22,050 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 05:20:22,050 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 05:20:22,050 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 05:20:22,050 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 05:20:22,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 05:20:22,050 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 05:20:22,050 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 05:20:22,051 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 05:20:22,051 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 05:20:22,051 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 05:20:22,052 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 05:20:22,052 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 05:20:22,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 05:20:22,277 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 05:20:22,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 05:20:22,279 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 05:20:22,280 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 05:20:22,281 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test22-1.c [2022-01-11 05:20:22,333 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e894a091c/614450c34ece4a50926d8b76ffc67512/FLAGdafad9ff4 [2022-01-11 05:20:22,710 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 05:20:22,711 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test22-1.c [2022-01-11 05:20:22,719 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e894a091c/614450c34ece4a50926d8b76ffc67512/FLAGdafad9ff4 [2022-01-11 05:20:22,734 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e894a091c/614450c34ece4a50926d8b76ffc67512 [2022-01-11 05:20:22,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 05:20:22,738 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 05:20:22,740 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 05:20:22,740 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 05:20:22,742 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 05:20:22,743 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 05:20:22" (1/1) ... [2022-01-11 05:20:22,743 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79891316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:20:22, skipping insertion in model container [2022-01-11 05:20:22,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 05:20:22" (1/1) ... [2022-01-11 05:20:22,748 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 05:20:22,763 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 05:20:22,938 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test22-1.c[1029,1042] [2022-01-11 05:20:22,942 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:20:22,950 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 05:20:22,968 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test22-1.c[1029,1042] [2022-01-11 05:20:22,970 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:20:22,985 INFO L208 MainTranslator]: Completed translation [2022-01-11 05:20:22,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:20:22 WrapperNode [2022-01-11 05:20:22,985 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 05:20:22,986 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 05:20:22,986 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 05:20:22,986 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 05:20:22,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:20:22" (1/1) ... [2022-01-11 05:20:23,004 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:20:22" (1/1) ... [2022-01-11 05:20:23,025 INFO L137 Inliner]: procedures = 19, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 100 [2022-01-11 05:20:23,025 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 05:20:23,026 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 05:20:23,026 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 05:20:23,026 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 05:20:23,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:20:22" (1/1) ... [2022-01-11 05:20:23,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:20:22" (1/1) ... [2022-01-11 05:20:23,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:20:22" (1/1) ... [2022-01-11 05:20:23,037 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:20:22" (1/1) ... [2022-01-11 05:20:23,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:20:22" (1/1) ... [2022-01-11 05:20:23,054 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:20:22" (1/1) ... [2022-01-11 05:20:23,059 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:20:22" (1/1) ... [2022-01-11 05:20:23,063 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 05:20:23,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 05:20:23,064 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 05:20:23,064 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 05:20:23,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:20:22" (1/1) ... [2022-01-11 05:20:23,070 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 05:20:23,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:20:23,089 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 05:20:23,098 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 05:20:23,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 05:20:23,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 05:20:23,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-01-11 05:20:23,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-11 05:20:23,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 05:20:23,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 05:20:23,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-11 05:20:23,198 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 05:20:23,199 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 05:20:23,345 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 05:20:23,366 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 05:20:23,366 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-11 05:20:23,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:20:23 BoogieIcfgContainer [2022-01-11 05:20:23,367 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 05:20:23,368 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 05:20:23,368 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 05:20:23,369 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 05:20:23,371 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:20:23" (1/1) ... [2022-01-11 05:20:23,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 05:20:23 BasicIcfg [2022-01-11 05:20:23,443 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 05:20:23,444 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 05:20:23,444 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 05:20:23,446 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 05:20:23,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 05:20:22" (1/4) ... [2022-01-11 05:20:23,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@580afeef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 05:20:23, skipping insertion in model container [2022-01-11 05:20:23,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:20:22" (2/4) ... [2022-01-11 05:20:23,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@580afeef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 05:20:23, skipping insertion in model container [2022-01-11 05:20:23,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:20:23" (3/4) ... [2022-01-11 05:20:23,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@580afeef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 05:20:23, skipping insertion in model container [2022-01-11 05:20:23,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 05:20:23" (4/4) ... [2022-01-11 05:20:23,450 INFO L111 eAbstractionObserver]: Analyzing ICFG test22-1.cTransformedIcfg [2022-01-11 05:20:23,454 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 05:20:23,454 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 05:20:23,491 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 05:20:23,498 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 05:20:23,498 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 05:20:23,508 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:20:23,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-11 05:20:23,512 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:20:23,512 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:20:23,513 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:20:23,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:20:23,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1586389736, now seen corresponding path program 1 times [2022-01-11 05:20:23,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:20:23,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909580457] [2022-01-11 05:20:23,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:20:23,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:20:23,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:20:23,764 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 05:20:23,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:20:23,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909580457] [2022-01-11 05:20:23,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909580457] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:20:23,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:20:23,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 05:20:23,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754639036] [2022-01-11 05:20:23,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:20:23,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 05:20:23,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:20:23,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 05:20:23,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 05:20:23,795 INFO L87 Difference]: Start difference. First operand has 25 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 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 05:20:23,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:20:23,809 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2022-01-11 05:20:23,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 05:20:23,812 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-11 05:20:23,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:20:23,819 INFO L225 Difference]: With dead ends: 34 [2022-01-11 05:20:23,819 INFO L226 Difference]: Without dead ends: 21 [2022-01-11 05:20:23,821 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 05:20:23,825 INFO L933 BasicCegarLoop]: 30 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, 30 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 05:20:23,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:20:23,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-01-11 05:20:23,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-01-11 05:20:23,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 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 05:20:23,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2022-01-11 05:20:23,857 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 19 [2022-01-11 05:20:23,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:20:23,859 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2022-01-11 05:20:23,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 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 05:20:23,860 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2022-01-11 05:20:23,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-11 05:20:23,861 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:20:23,861 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:20:23,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 05:20:23,862 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:20:23,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:20:23,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1904009934, now seen corresponding path program 1 times [2022-01-11 05:20:23,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:20:23,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697704937] [2022-01-11 05:20:23,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:20:23,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:20:23,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:20:24,056 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 05:20:24,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:20:24,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697704937] [2022-01-11 05:20:24,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697704937] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:20:24,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:20:24,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-11 05:20:24,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61656276] [2022-01-11 05:20:24,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:20:24,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-11 05:20:24,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:20:24,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-11 05:20:24,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-11 05:20:24,064 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 9 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 05:20:24,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:20:24,461 INFO L93 Difference]: Finished difference Result 85 states and 97 transitions. [2022-01-11 05:20:24,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-11 05:20:24,462 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 9 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) Word has length 20 [2022-01-11 05:20:24,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:20:24,463 INFO L225 Difference]: With dead ends: 85 [2022-01-11 05:20:24,463 INFO L226 Difference]: Without dead ends: 62 [2022-01-11 05:20:24,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2022-01-11 05:20:24,465 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 136 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 05:20:24,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 112 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 05:20:24,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-01-11 05:20:24,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 24. [2022-01-11 05:20:24,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 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 05:20:24,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-01-11 05:20:24,472 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 20 [2022-01-11 05:20:24,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:20:24,472 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-01-11 05:20:24,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 9 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 05:20:24,473 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-01-11 05:20:24,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-11 05:20:24,473 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:20:24,474 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:20:24,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 05:20:24,474 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:20:24,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:20:24,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1398451309, now seen corresponding path program 1 times [2022-01-11 05:20:24,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:20:24,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712055691] [2022-01-11 05:20:24,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:20:24,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:20:24,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:20:25,252 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 05:20:25,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:20:25,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712055691] [2022-01-11 05:20:25,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712055691] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:20:25,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:20:25,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-11 05:20:25,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133801531] [2022-01-11 05:20:25,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:20:25,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-11 05:20:25,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:20:25,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-11 05:20:25,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-01-11 05:20:25,254 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 15 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 14 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 05:20:26,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:20:26,365 INFO L93 Difference]: Finished difference Result 71 states and 76 transitions. [2022-01-11 05:20:26,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-11 05:20:26,366 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 14 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) Word has length 20 [2022-01-11 05:20:26,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:20:26,367 INFO L225 Difference]: With dead ends: 71 [2022-01-11 05:20:26,368 INFO L226 Difference]: Without dead ends: 66 [2022-01-11 05:20:26,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=257, Invalid=735, Unknown=0, NotChecked=0, Total=992 [2022-01-11 05:20:26,370 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 191 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 05:20:26,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 73 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 05:20:26,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-01-11 05:20:26,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 33. [2022-01-11 05:20:26,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.15625) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:20:26,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2022-01-11 05:20:26,400 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 20 [2022-01-11 05:20:26,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:20:26,400 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2022-01-11 05:20:26,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 14 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 05:20:26,401 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2022-01-11 05:20:26,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-11 05:20:26,401 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:20:26,402 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:20:26,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 05:20:26,402 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:20:26,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:20:26,403 INFO L85 PathProgramCache]: Analyzing trace with hash -550700237, now seen corresponding path program 1 times [2022-01-11 05:20:26,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:20:26,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663147201] [2022-01-11 05:20:26,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:20:26,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:20:26,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:20:26,937 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 05:20:26,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:20:26,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663147201] [2022-01-11 05:20:26,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663147201] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:20:26,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:20:26,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-11 05:20:26,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628781366] [2022-01-11 05:20:26,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:20:26,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-11 05:20:26,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:20:26,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-11 05:20:26,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-01-11 05:20:26,939 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 14 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 13 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 05:20:28,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:20:28,038 INFO L93 Difference]: Finished difference Result 98 states and 104 transitions. [2022-01-11 05:20:28,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-11 05:20:28,039 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 13 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) Word has length 20 [2022-01-11 05:20:28,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:20:28,040 INFO L225 Difference]: With dead ends: 98 [2022-01-11 05:20:28,040 INFO L226 Difference]: Without dead ends: 93 [2022-01-11 05:20:28,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=187, Invalid=515, Unknown=0, NotChecked=0, Total=702 [2022-01-11 05:20:28,041 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 123 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 05:20:28,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 211 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 05:20:28,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-01-11 05:20:28,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 33. [2022-01-11 05:20:28,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.15625) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:20:28,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2022-01-11 05:20:28,051 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 20 [2022-01-11 05:20:28,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:20:28,063 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2022-01-11 05:20:28,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 13 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 05:20:28,064 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2022-01-11 05:20:28,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-11 05:20:28,064 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:20:28,064 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:20:28,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 05:20:28,065 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:20:28,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:20:28,068 INFO L85 PathProgramCache]: Analyzing trace with hash -45141612, now seen corresponding path program 1 times [2022-01-11 05:20:28,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:20:28,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092931623] [2022-01-11 05:20:28,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:20:28,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:20:28,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:20:28,155 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 05:20:28,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:20:28,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092931623] [2022-01-11 05:20:28,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092931623] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:20:28,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:20:28,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-11 05:20:28,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751702322] [2022-01-11 05:20:28,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:20:28,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-11 05:20:28,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:20:28,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-11 05:20:28,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-11 05:20:28,159 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 9 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 05:20:28,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:20:28,415 INFO L93 Difference]: Finished difference Result 85 states and 90 transitions. [2022-01-11 05:20:28,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-11 05:20:28,415 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 9 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) Word has length 20 [2022-01-11 05:20:28,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:20:28,416 INFO L225 Difference]: With dead ends: 85 [2022-01-11 05:20:28,416 INFO L226 Difference]: Without dead ends: 68 [2022-01-11 05:20:28,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2022-01-11 05:20:28,422 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 68 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:20:28,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 237 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:20:28,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-01-11 05:20:28,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 26. [2022-01-11 05:20:28,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.12) internal successors, (28), 25 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:20:28,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2022-01-11 05:20:28,437 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 20 [2022-01-11 05:20:28,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:20:28,440 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2022-01-11 05:20:28,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 9 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 05:20:28,442 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2022-01-11 05:20:28,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-11 05:20:28,442 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:20:28,442 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:20:28,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 05:20:28,443 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:20:28,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:20:28,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1240351127, now seen corresponding path program 1 times [2022-01-11 05:20:28,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:20:28,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874718409] [2022-01-11 05:20:28,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:20:28,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:20:28,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:20:29,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:20:29,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:20:29,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874718409] [2022-01-11 05:20:29,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874718409] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 05:20:29,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388258680] [2022-01-11 05:20:29,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:20:29,695 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:20:29,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:20:29,697 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 05:20:29,728 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 05:20:30,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:20:30,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 80 conjunts are in the unsatisfiable core [2022-01-11 05:20:30,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 05:20:30,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 05:20:30,816 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 25 [2022-01-11 05:20:30,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 05:20:30,822 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 14 treesize of output 16 [2022-01-11 05:20:31,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:20:31,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 05:20:32,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:20:32,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388258680] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 05:20:32,560 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 05:20:32,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 10] total 38 [2022-01-11 05:20:32,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274901157] [2022-01-11 05:20:32,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 05:20:32,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-11 05:20:32,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:20:32,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-11 05:20:32,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1280, Unknown=0, NotChecked=0, Total=1406 [2022-01-11 05:20:32,562 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 38 states, 38 states have (on average 1.605263157894737) internal successors, (61), 38 states have internal predecessors, (61), 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 05:20:42,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:20:42,244 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2022-01-11 05:20:42,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-11 05:20:42,244 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.605263157894737) internal successors, (61), 38 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-01-11 05:20:42,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:20:42,245 INFO L225 Difference]: With dead ends: 101 [2022-01-11 05:20:42,245 INFO L226 Difference]: Without dead ends: 84 [2022-01-11 05:20:42,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1845 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=1528, Invalid=6662, Unknown=0, NotChecked=0, Total=8190 [2022-01-11 05:20:42,254 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 331 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-11 05:20:42,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 110 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-11 05:20:42,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-01-11 05:20:42,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 39. [2022-01-11 05:20:42,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.105263157894737) internal successors, (42), 38 states have internal predecessors, (42), 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 05:20:42,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2022-01-11 05:20:42,270 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 22 [2022-01-11 05:20:42,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:20:42,271 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2022-01-11 05:20:42,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.605263157894737) internal successors, (61), 38 states have internal predecessors, (61), 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 05:20:42,274 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2022-01-11 05:20:42,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-11 05:20:42,275 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:20:42,275 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:20:42,282 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 05:20:42,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-01-11 05:20:42,480 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:20:42,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:20:42,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1981901253, now seen corresponding path program 1 times [2022-01-11 05:20:42,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:20:42,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276853689] [2022-01-11 05:20:42,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:20:42,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:20:42,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:20:44,183 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 05:20:44,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:20:44,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276853689] [2022-01-11 05:20:44,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276853689] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 05:20:44,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463331168] [2022-01-11 05:20:44,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:20:44,184 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:20:44,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:20:44,185 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 05:20:44,186 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 05:20:44,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:20:44,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 77 conjunts are in the unsatisfiable core [2022-01-11 05:20:44,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 05:20:44,569 INFO L353 Elim1Store]: treesize reduction 40, result has 32.2 percent of original size [2022-01-11 05:20:44,570 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 65 [2022-01-11 05:20:44,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 05:20:44,579 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-01-11 05:20:44,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 05:20:44,591 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-01-11 05:20:44,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 05:20:44,669 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2022-01-11 05:20:44,685 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 42 [2022-01-11 05:20:44,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 05:20:44,690 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2022-01-11 05:20:45,603 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 05:20:45,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 05:20:48,106 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 05:20:48,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463331168] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 05:20:48,106 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 05:20:48,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 11] total 39 [2022-01-11 05:20:48,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752061468] [2022-01-11 05:20:48,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 05:20:48,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-11 05:20:48,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:20:48,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-11 05:20:48,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1356, Unknown=0, NotChecked=0, Total=1482 [2022-01-11 05:20:48,108 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 39 states, 39 states have (on average 1.6923076923076923) internal successors, (66), 39 states have internal predecessors, (66), 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 05:21:33,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:21:33,463 INFO L93 Difference]: Finished difference Result 123 states and 133 transitions. [2022-01-11 05:21:33,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-01-11 05:21:33,464 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.6923076923076923) internal successors, (66), 39 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-11 05:21:33,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:21:33,465 INFO L225 Difference]: With dead ends: 123 [2022-01-11 05:21:33,465 INFO L226 Difference]: Without dead ends: 100 [2022-01-11 05:21:33,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2597 ImplicationChecksByTransitivity, 43.7s TimeCoverageRelationStatistics Valid=2029, Invalid=8682, Unknown=1, NotChecked=0, Total=10712 [2022-01-11 05:21:33,467 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 226 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:21:33,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 396 Invalid, 1227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-01-11 05:21:33,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-01-11 05:21:33,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 43. [2022-01-11 05:21:33,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.0952380952380953) internal successors, (46), 42 states have internal predecessors, (46), 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 05:21:33,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2022-01-11 05:21:33,482 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 24 [2022-01-11 05:21:33,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:21:33,482 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2022-01-11 05:21:33,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.6923076923076923) internal successors, (66), 39 states have internal predecessors, (66), 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 05:21:33,482 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2022-01-11 05:21:33,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-11 05:21:33,483 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:21:33,483 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:21:33,500 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-11 05:21:33,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-01-11 05:21:33,688 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:21:33,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:21:33,689 INFO L85 PathProgramCache]: Analyzing trace with hash -234527325, now seen corresponding path program 2 times [2022-01-11 05:21:33,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:21:33,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524838047] [2022-01-11 05:21:33,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:21:33,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:21:33,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:21:35,060 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:21:35,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:21:35,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524838047] [2022-01-11 05:21:35,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524838047] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 05:21:35,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188939348] [2022-01-11 05:21:35,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-11 05:21:35,061 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 05:21:35,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:21:35,062 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 05:21:35,063 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 05:21:36,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-11 05:21:36,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 05:21:36,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 89 conjunts are in the unsatisfiable core [2022-01-11 05:21:36,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 05:21:36,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 05:21:36,507 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 25 [2022-01-11 05:21:36,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-11 05:21:36,511 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-01-11 05:21:37,682 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:21:37,683 INFO L328 TraceCheckSpWp]: Computing backward predicates...