/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/array-tiling/pr4.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 15:28:16,964 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 15:28:16,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 15:28:17,024 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 15:28:17,040 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 15:28:17,041 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 15:28:17,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 15:28:17,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 15:28:17,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 15:28:17,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 15:28:17,048 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 15:28:17,051 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 15:28:17,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 15:28:17,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 15:28:17,054 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 15:28:17,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 15:28:17,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 15:28:17,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 15:28:17,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 15:28:17,067 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 15:28:17,068 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 15:28:17,092 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 15:28:17,093 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 15:28:17,093 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 15:28:17,093 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 15:28:17,094 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 15:28:17,094 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 15:28:17,094 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 15:28:17,094 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 15:28:17,094 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 15:28:17,094 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 15:28:17,095 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 15:28:17,095 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 15:28:17,095 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 15:28:17,095 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 15:28:17,095 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 15:28:17,095 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 15:28:17,096 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 15:28:17,096 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 15:28:17,096 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 15:28:17,096 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 15:28:17,096 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 15:28:17,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 15:28:17,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 15:28:17,096 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 15:28:17,096 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 15:28:17,096 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 15:28:17,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 15:28:17,097 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 15:28:17,097 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 15:28:17,097 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 15:28:17,097 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 15:28:17,097 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 15:28:17,097 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 15:28:17,098 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 15:28:17,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 15:28:17,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 15:28:17,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 15:28:17,323 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 15:28:17,323 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 15:28:17,324 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/pr4.c [2022-01-10 15:28:17,373 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7e3f3b46/8fe18801652c41b6a6ef18f17ae72ffa/FLAG70254916f [2022-01-10 15:28:17,729 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 15:28:17,730 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/pr4.c [2022-01-10 15:28:17,734 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7e3f3b46/8fe18801652c41b6a6ef18f17ae72ffa/FLAG70254916f [2022-01-10 15:28:18,140 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7e3f3b46/8fe18801652c41b6a6ef18f17ae72ffa [2022-01-10 15:28:18,142 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 15:28:18,143 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 15:28:18,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 15:28:18,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 15:28:18,146 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 15:28:18,147 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:28:18" (1/1) ... [2022-01-10 15:28:18,147 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@215ccbd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:28:18, skipping insertion in model container [2022-01-10 15:28:18,147 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:28:18" (1/1) ... [2022-01-10 15:28:18,151 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 15:28:18,162 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 15:28:18,295 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/pr4.c[394,407] [2022-01-10 15:28:18,350 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 15:28:18,358 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 15:28:18,368 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/pr4.c[394,407] [2022-01-10 15:28:18,392 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 15:28:18,400 INFO L208 MainTranslator]: Completed translation [2022-01-10 15:28:18,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:28:18 WrapperNode [2022-01-10 15:28:18,400 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 15:28:18,401 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 15:28:18,401 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 15:28:18,401 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 15:28:18,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:28:18" (1/1) ... [2022-01-10 15:28:18,418 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:28:18" (1/1) ... [2022-01-10 15:28:18,436 INFO L137 Inliner]: procedures = 17, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 82 [2022-01-10 15:28:18,437 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 15:28:18,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 15:28:18,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 15:28:18,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 15:28:18,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:28:18" (1/1) ... [2022-01-10 15:28:18,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:28:18" (1/1) ... [2022-01-10 15:28:18,447 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:28:18" (1/1) ... [2022-01-10 15:28:18,447 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:28:18" (1/1) ... [2022-01-10 15:28:18,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:28:18" (1/1) ... [2022-01-10 15:28:18,464 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:28:18" (1/1) ... [2022-01-10 15:28:18,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:28:18" (1/1) ... [2022-01-10 15:28:18,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 15:28:18,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 15:28:18,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 15:28:18,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 15:28:18,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:28:18" (1/1) ... [2022-01-10 15:28:18,473 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 15:28:18,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:28:18,496 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 15:28:18,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 15:28:18,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 15:28:18,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 15:28:18,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 15:28:18,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 15:28:18,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 15:28:18,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 15:28:18,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 15:28:18,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 15:28:18,580 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 15:28:18,581 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 15:28:18,789 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 15:28:18,793 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 15:28:18,793 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 15:28:18,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:28:18 BoogieIcfgContainer [2022-01-10 15:28:18,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 15:28:18,795 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 15:28:18,795 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 15:28:18,796 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 15:28:18,813 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:28:18" (1/1) ... [2022-01-10 15:28:18,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 03:28:18 BasicIcfg [2022-01-10 15:28:18,943 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 15:28:18,944 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 15:28:18,944 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 15:28:18,946 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 15:28:18,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 03:28:18" (1/4) ... [2022-01-10 15:28:18,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dd09949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:28:18, skipping insertion in model container [2022-01-10 15:28:18,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:28:18" (2/4) ... [2022-01-10 15:28:18,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dd09949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:28:18, skipping insertion in model container [2022-01-10 15:28:18,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:28:18" (3/4) ... [2022-01-10 15:28:18,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dd09949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 03:28:18, skipping insertion in model container [2022-01-10 15:28:18,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 03:28:18" (4/4) ... [2022-01-10 15:28:18,948 INFO L111 eAbstractionObserver]: Analyzing ICFG pr4.cTransformedIcfg [2022-01-10 15:28:18,951 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 15:28:18,952 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 15:28:19,001 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 15:28:19,008 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 15:28:19,008 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 15:28:19,016 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 25 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:28:19,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-10 15:28:19,019 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:28:19,019 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:28:19,020 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:28:19,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:28:19,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1129356973, now seen corresponding path program 1 times [2022-01-10 15:28:19,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:28:19,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443652108] [2022-01-10 15:28:19,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:28:19,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:28:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:28:19,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:28:19,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:28:19,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443652108] [2022-01-10 15:28:19,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443652108] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:28:19,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:28:19,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 15:28:19,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625184171] [2022-01-10 15:28:19,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:28:19,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 15:28:19,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:28:19,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 15:28:19,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 15:28:19,243 INFO L87 Difference]: Start difference. First operand has 26 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 25 states have internal predecessors, (38), 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 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:28:19,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:28:19,255 INFO L93 Difference]: Finished difference Result 47 states and 68 transitions. [2022-01-10 15:28:19,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 15:28:19,256 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-01-10 15:28:19,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:28:19,261 INFO L225 Difference]: With dead ends: 47 [2022-01-10 15:28:19,261 INFO L226 Difference]: Without dead ends: 21 [2022-01-10 15:28:19,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 15:28:19,265 INFO L933 BasicCegarLoop]: 34 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, 34 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 15:28:19,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 15:28:19,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-01-10 15:28:19,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-01-10 15:28:19,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:28:19,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2022-01-10 15:28:19,287 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 13 [2022-01-10 15:28:19,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:28:19,288 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2022-01-10 15:28:19,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:28:19,289 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2022-01-10 15:28:19,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-10 15:28:19,289 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:28:19,290 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:28:19,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 15:28:19,290 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:28:19,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:28:19,292 INFO L85 PathProgramCache]: Analyzing trace with hash 209406191, now seen corresponding path program 1 times [2022-01-10 15:28:19,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:28:19,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87703795] [2022-01-10 15:28:19,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:28:19,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:28:19,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:28:19,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:28:19,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:28:19,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87703795] [2022-01-10 15:28:19,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87703795] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:28:19,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:28:19,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 15:28:19,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936980709] [2022-01-10 15:28:19,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:28:19,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 15:28:19,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:28:19,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 15:28:19,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 15:28:19,430 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:28:19,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:28:19,485 INFO L93 Difference]: Finished difference Result 30 states and 37 transitions. [2022-01-10 15:28:19,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 15:28:19,485 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-01-10 15:28:19,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:28:19,486 INFO L225 Difference]: With dead ends: 30 [2022-01-10 15:28:19,487 INFO L226 Difference]: Without dead ends: 28 [2022-01-10 15:28:19,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 15:28:19,491 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 9 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 15:28:19,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 71 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 15:28:19,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-01-10 15:28:19,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2022-01-10 15:28:19,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 22 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:28:19,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2022-01-10 15:28:19,494 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 13 [2022-01-10 15:28:19,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:28:19,494 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2022-01-10 15:28:19,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:28:19,494 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2022-01-10 15:28:19,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-10 15:28:19,495 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:28:19,496 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:28:19,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 15:28:19,496 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:28:19,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:28:19,497 INFO L85 PathProgramCache]: Analyzing trace with hash 209435982, now seen corresponding path program 1 times [2022-01-10 15:28:19,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:28:19,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709562255] [2022-01-10 15:28:19,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:28:19,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:28:19,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:28:19,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:28:19,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:28:19,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709562255] [2022-01-10 15:28:19,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709562255] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:28:19,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:28:19,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 15:28:19,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157650857] [2022-01-10 15:28:19,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:28:19,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 15:28:19,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:28:19,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 15:28:19,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 15:28:19,864 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:28:19,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:28:19,957 INFO L93 Difference]: Finished difference Result 40 states and 52 transitions. [2022-01-10 15:28:19,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 15:28:19,958 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-01-10 15:28:19,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:28:19,958 INFO L225 Difference]: With dead ends: 40 [2022-01-10 15:28:19,958 INFO L226 Difference]: Without dead ends: 29 [2022-01-10 15:28:19,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 15:28:19,960 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 55 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 15:28:19,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 21 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 15:28:19,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-01-10 15:28:19,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2022-01-10 15:28:19,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:28:19,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2022-01-10 15:28:19,963 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 13 [2022-01-10 15:28:19,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:28:19,964 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-01-10 15:28:19,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:28:19,964 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2022-01-10 15:28:19,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 15:28:19,964 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:28:19,964 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:28:19,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 15:28:19,965 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:28:19,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:28:19,965 INFO L85 PathProgramCache]: Analyzing trace with hash -413006973, now seen corresponding path program 1 times [2022-01-10 15:28:19,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:28:19,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562065690] [2022-01-10 15:28:19,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:28:19,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:28:20,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:28:21,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:28:21,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:28:21,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562065690] [2022-01-10 15:28:21,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562065690] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 15:28:21,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515619393] [2022-01-10 15:28:21,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:28:21,199 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:28:21,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:28:21,212 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 15:28:21,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 15:28:21,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:28:21,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 43 conjunts are in the unsatisfiable core [2022-01-10 15:28:21,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:28:26,346 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 43 treesize of output 39 [2022-01-10 15:28:26,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:28:26,411 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 82 [2022-01-10 15:28:26,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:28:26,441 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 82 [2022-01-10 15:28:26,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:28:26,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:28:26,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:28:26,530 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 15:28:26,530 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 38 [2022-01-10 15:28:26,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:28:26,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 15:29:10,548 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 2371 treesize of output 2343 [2022-01-10 15:29:10,612 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 225540 treesize of output 221508