/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_BITWISE.epf -i ../../../trunk/examples/svcomp/array-multidimensional/min-3-n-u.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 09:46:41,394 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 09:46:41,395 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 09:46:41,434 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 09:46:41,457 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 09:46:41,457 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 09:46:41,458 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 09:46:41,458 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 09:46:41,459 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 09:46:41,459 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 09:46:41,460 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 09:46:41,464 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 09:46:41,466 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 09:46:41,467 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 09:46:41,468 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 09:46:41,469 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 09:46:41,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 09:46:41,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 09:46:41,481 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 09:46:41,481 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 09:46:41,482 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 09:46:41,509 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 09:46:41,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 09:46:41,510 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 09:46:41,510 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 09:46:41,510 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 09:46:41,510 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 09:46:41,511 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 09:46:41,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 09:46:41,511 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 09:46:41,511 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 09:46:41,511 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 09:46:41,511 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 09:46:41,511 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 09:46:41,511 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 09:46:41,511 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 09:46:41,511 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 09:46:41,511 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 09:46:41,512 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 09:46:41,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 09:46:41,512 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 09:46:41,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 09:46:41,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 09:46:41,512 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 09:46:41,512 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 09:46:41,512 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 09:46:41,512 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 09:46:41,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 09:46:41,512 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 09:46:41,513 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 09:46:41,513 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 09:46:41,513 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 09:46:41,513 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 09:46:41,513 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 09:46:41,514 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 09:46:41,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 09:46:41,736 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 09:46:41,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 09:46:41,739 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 09:46:41,739 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 09:46:41,740 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-multidimensional/min-3-n-u.c [2022-01-10 09:46:41,782 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0dbde7136/ebdf50baafb84b508a5bb81125c90e5e/FLAG16a80e7fc [2022-01-10 09:46:42,149 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 09:46:42,150 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/min-3-n-u.c [2022-01-10 09:46:42,158 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0dbde7136/ebdf50baafb84b508a5bb81125c90e5e/FLAG16a80e7fc [2022-01-10 09:46:42,171 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0dbde7136/ebdf50baafb84b508a5bb81125c90e5e [2022-01-10 09:46:42,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 09:46:42,174 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 09:46:42,177 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 09:46:42,177 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 09:46:42,180 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 09:46:42,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:46:42" (1/1) ... [2022-01-10 09:46:42,182 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63527150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:46:42, skipping insertion in model container [2022-01-10 09:46:42,182 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:46:42" (1/1) ... [2022-01-10 09:46:42,186 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 09:46:42,199 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 09:46:42,364 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-multidimensional/min-3-n-u.c[321,334] [2022-01-10 09:46:42,391 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 09:46:42,403 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 09:46:42,412 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-multidimensional/min-3-n-u.c[321,334] [2022-01-10 09:46:42,438 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 09:46:42,450 INFO L208 MainTranslator]: Completed translation [2022-01-10 09:46:42,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:46:42 WrapperNode [2022-01-10 09:46:42,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 09:46:42,452 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 09:46:42,452 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 09:46:42,452 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 09:46:42,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:46:42" (1/1) ... [2022-01-10 09:46:42,470 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:46:42" (1/1) ... [2022-01-10 09:46:42,490 INFO L137 Inliner]: procedures = 16, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 108 [2022-01-10 09:46:42,490 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 09:46:42,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 09:46:42,491 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 09:46:42,491 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 09:46:42,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:46:42" (1/1) ... [2022-01-10 09:46:42,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:46:42" (1/1) ... [2022-01-10 09:46:42,501 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:46:42" (1/1) ... [2022-01-10 09:46:42,501 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:46:42" (1/1) ... [2022-01-10 09:46:42,515 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:46:42" (1/1) ... [2022-01-10 09:46:42,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:46:42" (1/1) ... [2022-01-10 09:46:42,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:46:42" (1/1) ... [2022-01-10 09:46:42,528 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 09:46:42,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 09:46:42,529 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 09:46:42,529 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 09:46:42,530 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:46:42" (1/1) ... [2022-01-10 09:46:42,535 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 09:46:42,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:46:42,557 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 09:46:42,559 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 09:46:42,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 09:46:42,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 09:46:42,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 09:46:42,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 09:46:42,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 09:46:42,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 09:46:42,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 09:46:42,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 09:46:42,634 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 09:46:42,635 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 09:46:44,080 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 09:46:44,084 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 09:46:44,084 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2022-01-10 09:46:44,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:46:44 BoogieIcfgContainer [2022-01-10 09:46:44,085 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 09:46:44,086 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 09:46:44,086 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 09:46:44,087 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 09:46:44,089 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:46:44" (1/1) ... [2022-01-10 09:46:44,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:46:44 BasicIcfg [2022-01-10 09:46:44,181 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 09:46:44,182 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 09:46:44,182 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 09:46:44,186 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 09:46:44,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 09:46:42" (1/4) ... [2022-01-10 09:46:44,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3484a0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:46:44, skipping insertion in model container [2022-01-10 09:46:44,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:46:42" (2/4) ... [2022-01-10 09:46:44,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3484a0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:46:44, skipping insertion in model container [2022-01-10 09:46:44,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:46:44" (3/4) ... [2022-01-10 09:46:44,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3484a0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 09:46:44, skipping insertion in model container [2022-01-10 09:46:44,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:46:44" (4/4) ... [2022-01-10 09:46:44,188 INFO L111 eAbstractionObserver]: Analyzing ICFG min-3-n-u.cTransformedIcfg [2022-01-10 09:46:44,191 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 09:46:44,191 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 09:46:44,232 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 09:46:44,238 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 09:46:44,239 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 09:46:44,247 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 28 states have internal predecessors, (48), 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 09:46:44,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 09:46:44,251 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:46:44,251 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:46:44,251 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:46:44,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:46:44,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1131834211, now seen corresponding path program 1 times [2022-01-10 09:46:44,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:46:44,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741657822] [2022-01-10 09:46:44,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:46:44,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:46:44,352 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:46:44,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1696105866] [2022-01-10 09:46:44,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:46:44,353 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:46:44,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:46:44,354 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 09:46:44,355 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 09:46:44,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:46:44,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 09:46:44,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:46:44,495 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 09:46:44,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 09:46:44,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:46:44,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741657822] [2022-01-10 09:46:44,496 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:46:44,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696105866] [2022-01-10 09:46:44,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696105866] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:46:44,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:46:44,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 09:46:44,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374478159] [2022-01-10 09:46:44,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:46:44,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 09:46:44,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:46:44,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 09:46:44,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 09:46:44,533 INFO L87 Difference]: Start difference. First operand has 29 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 28 states have internal predecessors, (48), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 09:46:44,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:46:44,548 INFO L93 Difference]: Finished difference Result 56 states and 94 transitions. [2022-01-10 09:46:44,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 09:46:44,550 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-01-10 09:46:44,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:46:44,555 INFO L225 Difference]: With dead ends: 56 [2022-01-10 09:46:44,556 INFO L226 Difference]: Without dead ends: 25 [2022-01-10 09:46:44,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 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 09:46:44,560 INFO L933 BasicCegarLoop]: 38 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, 38 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 09:46:44,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 09:46:44,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-01-10 09:46:44,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-01-10 09:46:44,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 states have internal predecessors, (34), 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 09:46:44,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2022-01-10 09:46:44,584 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 11 [2022-01-10 09:46:44,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:46:44,585 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2022-01-10 09:46:44,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 09:46:44,585 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2022-01-10 09:46:44,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 09:46:44,586 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:46:44,586 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:46:44,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 09:46:44,799 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,SelfDestructingSolverStorable0 [2022-01-10 09:46:44,800 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:46:44,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:46:44,800 INFO L85 PathProgramCache]: Analyzing trace with hash 2019337892, now seen corresponding path program 1 times [2022-01-10 09:46:44,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:46:44,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009887064] [2022-01-10 09:46:44,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:46:44,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:46:44,822 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:46:44,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2087930730] [2022-01-10 09:46:44,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:46:44,823 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:46:44,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:46:44,848 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 09:46:44,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 09:46:44,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:46:44,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 09:46:44,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:46:45,115 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 09:46:45,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 09:46:45,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:46:45,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009887064] [2022-01-10 09:46:45,116 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:46:45,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087930730] [2022-01-10 09:46:45,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087930730] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:46:45,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:46:45,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 09:46:45,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718723355] [2022-01-10 09:46:45,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:46:45,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 09:46:45,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:46:45,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 09:46:45,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 09:46:45,124 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 09:46:46,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:46:46,216 INFO L93 Difference]: Finished difference Result 67 states and 92 transitions. [2022-01-10 09:46:46,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 09:46:46,217 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-01-10 09:46:46,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:46:46,218 INFO L225 Difference]: With dead ends: 67 [2022-01-10 09:46:46,218 INFO L226 Difference]: Without dead ends: 46 [2022-01-10 09:46:46,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 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 09:46:46,219 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 30 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 09:46:46,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 62 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 09:46:46,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-01-10 09:46:46,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 27. [2022-01-10 09:46:46,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:46:46,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2022-01-10 09:46:46,223 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 11 [2022-01-10 09:46:46,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:46:46,223 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2022-01-10 09:46:46,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 09:46:46,223 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2022-01-10 09:46:46,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-10 09:46:46,224 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:46:46,224 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:46:46,240 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-10 09:46:46,425 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,SelfDestructingSolverStorable1 [2022-01-10 09:46:46,425 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:46:46,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:46:46,426 INFO L85 PathProgramCache]: Analyzing trace with hash -192962176, now seen corresponding path program 1 times [2022-01-10 09:46:46,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:46:46,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825266753] [2022-01-10 09:46:46,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:46:46,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:46:46,478 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:46:46,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [182713017] [2022-01-10 09:46:46,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:46:46,479 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:46:46,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:46:46,482 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 09:46:46,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 09:46:46,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:46:46,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 09:46:46,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:46:46,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 09:46:46,740 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 09:46:46,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:46:46,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825266753] [2022-01-10 09:46:46,741 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:46:46,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182713017] [2022-01-10 09:46:46,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182713017] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:46:46,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:46:46,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 09:46:46,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407117955] [2022-01-10 09:46:46,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:46:46,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 09:46:46,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:46:46,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 09:46:46,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 09:46:46,743 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:46:47,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:46:47,194 INFO L93 Difference]: Finished difference Result 79 states and 109 transitions. [2022-01-10 09:46:47,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 09:46:47,195 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-10 09:46:47,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:46:47,195 INFO L225 Difference]: With dead ends: 79 [2022-01-10 09:46:47,195 INFO L226 Difference]: Without dead ends: 43 [2022-01-10 09:46:47,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 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 09:46:47,196 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 24 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 09:46:47,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 72 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 09:46:47,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-01-10 09:46:47,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 30. [2022-01-10 09:46:47,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 29 states have internal predecessors, (39), 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 09:46:47,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2022-01-10 09:46:47,200 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 17 [2022-01-10 09:46:47,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:46:47,201 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2022-01-10 09:46:47,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:46:47,201 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2022-01-10 09:46:47,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-10 09:46:47,201 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:46:47,201 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, 1, 1, 1] [2022-01-10 09:46:47,218 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-10 09:46:47,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:46:47,408 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:46:47,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:46:47,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1457410529, now seen corresponding path program 1 times [2022-01-10 09:46:47,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:46:47,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617141888] [2022-01-10 09:46:47,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:46:47,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:46:47,424 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:46:47,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [268288265] [2022-01-10 09:46:47,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:46:47,425 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:46:47,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:46:47,429 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 09:46:47,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-10 09:46:47,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:46:47,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 09:46:47,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:46:47,652 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 09:46:47,652 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 09:46:47,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:46:47,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617141888] [2022-01-10 09:46:47,652 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:46:47,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268288265] [2022-01-10 09:46:47,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268288265] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:46:47,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:46:47,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 09:46:47,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770622863] [2022-01-10 09:46:47,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:46:47,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 09:46:47,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:46:47,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 09:46:47,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 09:46:47,654 INFO L87 Difference]: Start difference. First operand 30 states and 39 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:46:50,034 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-10 09:46:50,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:46:50,606 INFO L93 Difference]: Finished difference Result 88 states and 118 transitions. [2022-01-10 09:46:50,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 09:46:50,606 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-01-10 09:46:50,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:46:50,607 INFO L225 Difference]: With dead ends: 88 [2022-01-10 09:46:50,607 INFO L226 Difference]: Without dead ends: 40 [2022-01-10 09:46:50,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 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 09:46:50,608 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 21 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-01-10 09:46:50,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 83 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 46 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-01-10 09:46:50,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-01-10 09:46:50,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2022-01-10 09:46:50,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.3125) internal successors, (42), 32 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) [2022-01-10 09:46:50,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2022-01-10 09:46:50,611 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 23 [2022-01-10 09:46:50,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:46:50,612 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2022-01-10 09:46:50,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 09:46:50,612 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2022-01-10 09:46:50,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-10 09:46:50,612 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:46:50,612 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, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:46:50,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-10 09:46:50,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:46:50,829 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:46:50,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:46:50,829 INFO L85 PathProgramCache]: Analyzing trace with hash 2071237112, now seen corresponding path program 1 times [2022-01-10 09:46:50,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:46:50,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266290232] [2022-01-10 09:46:50,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:46:50,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:46:50,850 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:46:50,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1113279137] [2022-01-10 09:46:50,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:46:50,851 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:46:50,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:46:50,852 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 09:46:50,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-10 09:46:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:46:51,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-10 09:46:51,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:46:51,264 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 09:46:51,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 09:46:52,858 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 09:46:52,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:46:52,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266290232] [2022-01-10 09:46:52,858 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:46:52,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113279137] [2022-01-10 09:46:52,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113279137] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 09:46:52,858 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 09:46:52,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2022-01-10 09:46:52,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056727590] [2022-01-10 09:46:52,859 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 09:46:52,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 09:46:52,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:46:52,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 09:46:52,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-01-10 09:46:52,860 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 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) [2022-01-10 09:46:56,588 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-10 09:46:57,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:46:57,010 INFO L93 Difference]: Finished difference Result 84 states and 110 transitions. [2022-01-10 09:46:57,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 09:46:57,011 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 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) Word has length 27 [2022-01-10 09:46:57,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:46:57,012 INFO L225 Difference]: With dead ends: 84 [2022-01-10 09:46:57,012 INFO L226 Difference]: Without dead ends: 54 [2022-01-10 09:46:57,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=74, Invalid=108, Unknown=0, NotChecked=0, Total=182 [2022-01-10 09:46:57,012 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 33 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 25 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-01-10 09:46:57,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 91 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 74 Invalid, 1 Unknown, 20 Unchecked, 3.3s Time] [2022-01-10 09:46:57,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-01-10 09:46:57,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 45. [2022-01-10 09:46:57,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 44 states have internal predecessors, (57), 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 09:46:57,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2022-01-10 09:46:57,021 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 27 [2022-01-10 09:46:57,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:46:57,021 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2022-01-10 09:46:57,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 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) [2022-01-10 09:46:57,021 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2022-01-10 09:46:57,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-10 09:46:57,022 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:46:57,022 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:46:57,028 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-01-10 09:46:57,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:46:57,229 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:46:57,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:46:57,229 INFO L85 PathProgramCache]: Analyzing trace with hash -974778712, now seen corresponding path program 2 times [2022-01-10 09:46:57,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:46:57,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336242700] [2022-01-10 09:46:57,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:46:57,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:46:57,254 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:46:57,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1354939698] [2022-01-10 09:46:57,255 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 09:46:57,255 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:46:57,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:46:57,256 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 09:46:57,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-10 09:46:57,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 09:46:57,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 09:46:57,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-10 09:46:57,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:46:57,878 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 09:46:57,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 09:46:58,206 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 09:46:58,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:46:58,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336242700] [2022-01-10 09:46:58,207 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:46:58,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354939698] [2022-01-10 09:46:58,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354939698] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 09:46:58,207 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 09:46:58,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2022-01-10 09:46:58,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114053662] [2022-01-10 09:46:58,207 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 09:46:58,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-10 09:46:58,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:46:58,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-10 09:46:58,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-01-10 09:46:58,208 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 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 09:46:59,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:46:59,933 INFO L93 Difference]: Finished difference Result 149 states and 196 transitions. [2022-01-10 09:46:59,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 09:46:59,934 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 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 30 [2022-01-10 09:46:59,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:46:59,935 INFO L225 Difference]: With dead ends: 149 [2022-01-10 09:46:59,935 INFO L226 Difference]: Without dead ends: 119 [2022-01-10 09:46:59,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-01-10 09:46:59,938 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 344 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-10 09:46:59,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 130 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-10 09:46:59,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-01-10 09:46:59,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 48. [2022-01-10 09:46:59,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.297872340425532) internal successors, (61), 47 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) [2022-01-10 09:46:59,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 61 transitions. [2022-01-10 09:46:59,949 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 61 transitions. Word has length 30 [2022-01-10 09:46:59,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:46:59,949 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 61 transitions. [2022-01-10 09:46:59,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 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 09:46:59,949 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 61 transitions. [2022-01-10 09:46:59,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-10 09:46:59,949 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:46:59,950 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:46:59,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-10 09:47:00,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:47:00,156 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:47:00,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:47:00,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1642853505, now seen corresponding path program 3 times [2022-01-10 09:47:00,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:47:00,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355291068] [2022-01-10 09:47:00,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:47:00,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:47:00,191 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:47:00,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [878507965] [2022-01-10 09:47:00,191 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-10 09:47:00,191 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:47:00,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:47:00,192 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 09:47:00,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-10 09:47:00,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-10 09:47:00,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 09:47:00,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 09:47:00,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:47:00,546 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-10 09:47:00,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 09:47:00,931 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-10 09:47:00,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:47:00,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355291068] [2022-01-10 09:47:00,931 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:47:00,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878507965] [2022-01-10 09:47:00,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878507965] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 09:47:00,932 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 09:47:00,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2022-01-10 09:47:00,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47449782] [2022-01-10 09:47:00,932 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 09:47:00,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 09:47:00,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:47:00,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 09:47:00,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-01-10 09:47:00,933 INFO L87 Difference]: Start difference. First operand 48 states and 61 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 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 09:47:05,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:47:05,678 INFO L93 Difference]: Finished difference Result 174 states and 226 transitions. [2022-01-10 09:47:05,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 09:47:05,679 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 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 33 [2022-01-10 09:47:05,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:47:05,680 INFO L225 Difference]: With dead ends: 174 [2022-01-10 09:47:05,680 INFO L226 Difference]: Without dead ends: 145 [2022-01-10 09:47:05,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-01-10 09:47:05,681 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 284 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-01-10 09:47:05,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 173 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-01-10 09:47:05,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-01-10 09:47:05,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 102. [2022-01-10 09:47:05,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.297029702970297) internal successors, (131), 101 states have internal predecessors, (131), 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 09:47:05,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 131 transitions. [2022-01-10 09:47:05,703 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 131 transitions. Word has length 33 [2022-01-10 09:47:05,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:47:05,703 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 131 transitions. [2022-01-10 09:47:05,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 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 09:47:05,704 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 131 transitions. [2022-01-10 09:47:05,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 09:47:05,705 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:47:05,705 INFO L514 BasicCegarLoop]: trace histogram [10, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:47:05,709 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-01-10 09:47:05,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:47:05,909 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:47:05,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:47:05,910 INFO L85 PathProgramCache]: Analyzing trace with hash 152868888, now seen corresponding path program 4 times [2022-01-10 09:47:05,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:47:05,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901391296] [2022-01-10 09:47:05,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:47:05,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:47:05,954 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:47:05,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [865710556] [2022-01-10 09:47:05,954 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-10 09:47:05,954 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:47:05,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:47:05,955 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 09:47:05,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-10 09:47:06,257 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-10 09:47:06,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 09:47:06,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 1201 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-10 09:47:06,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:47:07,500 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 87 proven. 18 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2022-01-10 09:47:07,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 09:47:09,171 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 78 proven. 27 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2022-01-10 09:47:09,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:47:09,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901391296] [2022-01-10 09:47:09,171 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:47:09,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865710556] [2022-01-10 09:47:09,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865710556] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 09:47:09,172 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 09:47:09,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-01-10 09:47:09,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868514029] [2022-01-10 09:47:09,172 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 09:47:09,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-10 09:47:09,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:47:09,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-10 09:47:09,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-01-10 09:47:09,173 INFO L87 Difference]: Start difference. First operand 102 states and 131 transitions. Second operand has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 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 09:47:13,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:47:13,285 INFO L93 Difference]: Finished difference Result 271 states and 364 transitions. [2022-01-10 09:47:13,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 09:47:13,285 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 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 93 [2022-01-10 09:47:13,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:47:13,287 INFO L225 Difference]: With dead ends: 271 [2022-01-10 09:47:13,287 INFO L226 Difference]: Without dead ends: 183 [2022-01-10 09:47:13,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2022-01-10 09:47:13,288 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 197 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-10 09:47:13,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 222 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 164 Invalid, 0 Unknown, 55 Unchecked, 1.8s Time] [2022-01-10 09:47:13,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-01-10 09:47:13,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 120. [2022-01-10 09:47:13,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.2941176470588236) internal successors, (154), 119 states have internal predecessors, (154), 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 09:47:13,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 154 transitions. [2022-01-10 09:47:13,315 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 154 transitions. Word has length 93 [2022-01-10 09:47:13,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:47:13,315 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 154 transitions. [2022-01-10 09:47:13,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 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 09:47:13,315 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 154 transitions. [2022-01-10 09:47:13,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-10 09:47:13,316 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:47:13,316 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:47:13,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-10 09:47:13,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-01-10 09:47:13,523 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:47:13,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:47:13,524 INFO L85 PathProgramCache]: Analyzing trace with hash 863494740, now seen corresponding path program 5 times [2022-01-10 09:47:13,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:47:13,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539154541] [2022-01-10 09:47:13,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:47:13,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:47:13,587 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:47:13,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [478607211] [2022-01-10 09:47:13,587 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-10 09:47:13,587 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:47:13,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:47:13,588 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 09:47:13,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process