/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/array-patterns/array14_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 15:37:36,178 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 15:37:36,179 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 15:37:36,223 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 15:37:36,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 15:37:36,241 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 15:37:36,241 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 15:37:36,242 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 15:37:36,242 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 15:37:36,243 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 15:37:36,244 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 15:37:36,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 15:37:36,246 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 15:37:36,257 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 15:37:36,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 15:37:36,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 15:37:36,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 15:37:36,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 15:37:36,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 15:37:36,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 15:37:36,278 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 15:37:36,297 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 15:37:36,297 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 15:37:36,297 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 15:37:36,298 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 15:37:36,298 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 15:37:36,298 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 15:37:36,298 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 15:37:36,298 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 15:37:36,299 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 15:37:36,299 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 15:37:36,299 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 15:37:36,299 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 15:37:36,302 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 15:37:36,302 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 15:37:36,302 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 15:37:36,302 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 15:37:36,302 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 15:37:36,302 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 15:37:36,303 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 15:37:36,303 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 15:37:36,303 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 15:37:36,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 15:37:36,303 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 15:37:36,303 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 15:37:36,303 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 15:37:36,303 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 15:37:36,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 15:37:36,304 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 15:37:36,304 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 15:37:36,304 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 15:37:36,304 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 15:37:36,304 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 15:37:36,306 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 15:37:36,306 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 15:37:36,496 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 15:37:36,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 15:37:36,521 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 15:37:36,521 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 15:37:36,523 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 15:37:36,524 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-patterns/array14_pattern.c [2022-01-10 15:37:36,579 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d47d4f467/1b723723c3fb49d3bfc12c14b0345a25/FLAG81f861111 [2022-01-10 15:37:36,961 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 15:37:36,961 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array14_pattern.c [2022-01-10 15:37:36,968 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d47d4f467/1b723723c3fb49d3bfc12c14b0345a25/FLAG81f861111 [2022-01-10 15:37:36,979 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d47d4f467/1b723723c3fb49d3bfc12c14b0345a25 [2022-01-10 15:37:36,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 15:37:36,983 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 15:37:36,985 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 15:37:36,985 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 15:37:36,989 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 15:37:36,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:37:36" (1/1) ... [2022-01-10 15:37:36,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8d2cfd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:37:36, skipping insertion in model container [2022-01-10 15:37:36,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:37:36" (1/1) ... [2022-01-10 15:37:36,996 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 15:37:37,010 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 15:37:37,132 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-patterns/array14_pattern.c[1285,1298] [2022-01-10 15:37:37,159 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 15:37:37,167 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 15:37:37,177 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-patterns/array14_pattern.c[1285,1298] [2022-01-10 15:37:37,216 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 15:37:37,227 INFO L208 MainTranslator]: Completed translation [2022-01-10 15:37:37,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:37:37 WrapperNode [2022-01-10 15:37:37,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 15:37:37,228 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 15:37:37,228 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 15:37:37,228 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 15:37:37,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:37:37" (1/1) ... [2022-01-10 15:37:37,251 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:37:37" (1/1) ... [2022-01-10 15:37:37,270 INFO L137 Inliner]: procedures = 18, calls = 18, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 100 [2022-01-10 15:37:37,271 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 15:37:37,271 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 15:37:37,272 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 15:37:37,272 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 15:37:37,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:37:37" (1/1) ... [2022-01-10 15:37:37,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:37:37" (1/1) ... [2022-01-10 15:37:37,282 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:37:37" (1/1) ... [2022-01-10 15:37:37,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:37:37" (1/1) ... [2022-01-10 15:37:37,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:37:37" (1/1) ... [2022-01-10 15:37:37,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:37:37" (1/1) ... [2022-01-10 15:37:37,303 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:37:37" (1/1) ... [2022-01-10 15:37:37,306 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 15:37:37,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 15:37:37,307 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 15:37:37,307 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 15:37:37,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:37:37" (1/1) ... [2022-01-10 15:37:37,313 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 15:37:37,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:37:37,330 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 15:37:37,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 15:37:37,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 15:37:37,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 15:37:37,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 15:37:37,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 15:37:37,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 15:37:37,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 15:37:37,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 15:37:37,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 15:37:37,424 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 15:37:37,425 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 15:37:37,882 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 15:37:37,886 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 15:37:37,886 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-01-10 15:37:37,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:37:37 BoogieIcfgContainer [2022-01-10 15:37:37,888 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 15:37:37,888 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 15:37:37,888 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 15:37:37,889 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 15:37:37,891 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:37:37" (1/1) ... [2022-01-10 15:37:37,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 03:37:37 BasicIcfg [2022-01-10 15:37:37,994 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 15:37:37,998 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 15:37:37,999 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 15:37:38,000 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 15:37:38,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 03:37:36" (1/4) ... [2022-01-10 15:37:38,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@184651ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:37:38, skipping insertion in model container [2022-01-10 15:37:38,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:37:37" (2/4) ... [2022-01-10 15:37:38,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@184651ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:37:38, skipping insertion in model container [2022-01-10 15:37:38,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:37:37" (3/4) ... [2022-01-10 15:37:38,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@184651ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 03:37:38, skipping insertion in model container [2022-01-10 15:37:38,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 03:37:37" (4/4) ... [2022-01-10 15:37:38,004 INFO L111 eAbstractionObserver]: Analyzing ICFG array14_pattern.cTransformedIcfg [2022-01-10 15:37:38,007 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 15:37:38,007 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 15:37:38,052 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 15:37:38,056 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 15:37:38,057 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 15:37:38,065 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 28 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:37:38,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 15:37:38,068 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:37:38,068 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:37:38,069 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:37:38,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:37:38,072 INFO L85 PathProgramCache]: Analyzing trace with hash 433608128, now seen corresponding path program 1 times [2022-01-10 15:37:38,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:37:38,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120220067] [2022-01-10 15:37:38,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:37:38,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:37:38,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:37:38,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:37:38,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:37:38,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120220067] [2022-01-10 15:37:38,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120220067] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:37:38,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:37:38,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 15:37:38,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858612169] [2022-01-10 15:37:38,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:37:38,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 15:37:38,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:37:38,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 15:37:38,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 15:37:38,244 INFO L87 Difference]: Start difference. First operand has 29 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 28 states have internal predecessors, (44), 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 15:37:38,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:37:38,259 INFO L93 Difference]: Finished difference Result 55 states and 84 transitions. [2022-01-10 15:37:38,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 15:37:38,262 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 15:37:38,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:37:38,268 INFO L225 Difference]: With dead ends: 55 [2022-01-10 15:37:38,268 INFO L226 Difference]: Without dead ends: 25 [2022-01-10 15:37:38,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 15:37:38,274 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 15:37:38,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 15:37:38,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-01-10 15:37:38,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-01-10 15:37:38,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:37:38,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2022-01-10 15:37:38,304 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 11 [2022-01-10 15:37:38,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:37:38,305 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2022-01-10 15:37:38,305 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 15:37:38,306 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2022-01-10 15:37:38,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-10 15:37:38,307 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:37:38,307 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:37:38,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 15:37:38,308 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:37:38,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:37:38,310 INFO L85 PathProgramCache]: Analyzing trace with hash -2092540127, now seen corresponding path program 1 times [2022-01-10 15:37:38,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:37:38,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735660402] [2022-01-10 15:37:38,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:37:38,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:37:38,374 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 15:37:38,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2022603217] [2022-01-10 15:37:38,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:37:38,375 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:37:38,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:37:38,377 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 15:37:38,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 15:37:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:37:38,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 15:37:38,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:37:39,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:37:39,140 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 15:37:39,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:37:39,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735660402] [2022-01-10 15:37:39,140 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 15:37:39,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022603217] [2022-01-10 15:37:39,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022603217] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:37:39,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:37:39,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 15:37:39,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246746224] [2022-01-10 15:37:39,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:37:39,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 15:37:39,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:37:39,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 15:37:39,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 15:37:39,146 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:37:39,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:37:39,389 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2022-01-10 15:37:39,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 15:37:39,389 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-10 15:37:39,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:37:39,389 INFO L225 Difference]: With dead ends: 34 [2022-01-10 15:37:39,390 INFO L226 Difference]: Without dead ends: 30 [2022-01-10 15:37:39,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-10 15:37:39,391 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 26 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 15:37:39,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 59 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 15:37:39,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-01-10 15:37:39,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2022-01-10 15:37:39,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 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 15:37:39,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2022-01-10 15:37:39,395 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 18 [2022-01-10 15:37:39,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:37:39,395 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2022-01-10 15:37:39,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:37:39,395 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2022-01-10 15:37:39,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-10 15:37:39,396 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:37:39,396 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 15:37:39,405 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 15:37:39,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:37:39,602 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:37:39,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:37:39,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1351165376, now seen corresponding path program 1 times [2022-01-10 15:37:39,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:37:39,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515296484] [2022-01-10 15:37:39,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:37:39,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:37:39,628 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 15:37:39,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1399945702] [2022-01-10 15:37:39,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:37:39,630 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:37:39,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:37:39,631 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 15:37:39,634 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 15:37:39,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:37:39,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 15:37:39,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:37:40,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 15:37:40,220 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 15:37:40,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:37:40,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515296484] [2022-01-10 15:37:40,221 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 15:37:40,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399945702] [2022-01-10 15:37:40,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399945702] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:37:40,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:37:40,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 15:37:40,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626835870] [2022-01-10 15:37:40,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:37:40,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 15:37:40,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:37:40,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 15:37:40,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 15:37:40,222 INFO L87 Difference]: Start difference. First operand 28 states and 34 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 15:37:40,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:37:40,306 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2022-01-10 15:37:40,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 15:37:40,306 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 15:37:40,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:37:40,307 INFO L225 Difference]: With dead ends: 62 [2022-01-10 15:37:40,307 INFO L226 Difference]: Without dead ends: 38 [2022-01-10 15:37:40,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 15:37:40,308 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 9 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 15:37:40,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 68 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 26 Unchecked, 0.1s Time] [2022-01-10 15:37:40,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-01-10 15:37:40,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 29. [2022-01-10 15:37:40,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.25) internal successors, (35), 28 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:37:40,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2022-01-10 15:37:40,312 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 23 [2022-01-10 15:37:40,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:37:40,312 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2022-01-10 15:37:40,312 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 15:37:40,312 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-01-10 15:37:40,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-10 15:37:40,312 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:37:40,312 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] [2022-01-10 15:37:40,317 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 15:37:40,517 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,SelfDestructingSolverStorable2 [2022-01-10 15:37:40,517 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:37:40,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:37:40,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1869838826, now seen corresponding path program 1 times [2022-01-10 15:37:40,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:37:40,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224670520] [2022-01-10 15:37:40,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:37:40,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:37:40,533 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 15:37:40,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [938115298] [2022-01-10 15:37:40,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:37:40,533 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:37:40,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:37:40,534 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 15:37:40,535 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 15:37:40,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:37:40,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 15:37:40,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:37:40,841 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 15:37:40,841 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 15:37:40,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:37:40,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224670520] [2022-01-10 15:37:40,841 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 15:37:40,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938115298] [2022-01-10 15:37:40,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938115298] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:37:40,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:37:40,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 15:37:40,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640480949] [2022-01-10 15:37:40,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:37:40,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 15:37:40,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:37:40,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 15:37:40,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 15:37:40,843 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:37:40,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:37:40,985 INFO L93 Difference]: Finished difference Result 71 states and 89 transitions. [2022-01-10 15:37:40,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 15:37:40,986 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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 26 [2022-01-10 15:37:40,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:37:40,986 INFO L225 Difference]: With dead ends: 71 [2022-01-10 15:37:40,986 INFO L226 Difference]: Without dead ends: 39 [2022-01-10 15:37:40,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 15:37:40,987 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 17 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 15:37:40,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 74 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 15:37:40,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-01-10 15:37:40,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2022-01-10 15:37:40,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.25) internal successors, (40), 32 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:37:40,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2022-01-10 15:37:40,991 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 26 [2022-01-10 15:37:40,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:37:40,991 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2022-01-10 15:37:40,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:37:40,991 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2022-01-10 15:37:40,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-10 15:37:40,992 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:37:40,992 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, 1] [2022-01-10 15:37:40,998 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 15:37:41,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:37:41,197 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:37:41,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:37:41,197 INFO L85 PathProgramCache]: Analyzing trace with hash -313626523, now seen corresponding path program 1 times [2022-01-10 15:37:41,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:37:41,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733114432] [2022-01-10 15:37:41,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:37:41,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:37:41,212 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 15:37:41,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1025513647] [2022-01-10 15:37:41,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:37:41,212 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:37:41,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:37:41,213 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 15:37:41,214 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 15:37:41,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:37:41,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 38 conjunts are in the unsatisfiable core [2022-01-10 15:37:41,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:37:41,823 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 40 [2022-01-10 15:37:45,220 INFO L353 Elim1Store]: treesize reduction 88, result has 49.4 percent of original size [2022-01-10 15:37:45,221 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 114