/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/array-examples/standard_partition_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 02:57:30,874 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 02:57:30,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 02:57:30,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-11 02:57:30,938 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 02:57:30,939 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 02:57:30,940 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 02:57:30,940 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 02:57:30,941 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 02:57:30,941 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 02:57:30,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 02:57:30,946 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 02:57:30,951 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 02:57:30,962 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 02:57:30,963 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 02:57:30,963 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 02:57:30,965 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-11 02:57:30,969 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 02:57:30,970 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 02:57:30,970 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 02:57:30,983 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 02:57:31,001 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 02:57:31,001 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 02:57:31,002 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 02:57:31,002 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 02:57:31,002 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 02:57:31,002 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 02:57:31,003 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 02:57:31,003 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 02:57:31,003 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 02:57:31,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 02:57:31,003 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 02:57:31,003 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 02:57:31,003 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 02:57:31,003 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 02:57:31,003 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 02:57:31,003 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 02:57:31,003 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 02:57:31,004 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 02:57:31,004 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 02:57:31,004 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 02:57:31,004 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 02:57:31,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 02:57:31,004 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 02:57:31,004 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 02:57:31,004 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 02:57:31,004 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 02:57:31,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 02:57:31,004 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 02:57:31,005 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 02:57:31,005 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 02:57:31,005 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 02:57:31,005 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 02:57:31,005 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 02:57:31,005 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 02:57:31,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 02:57:31,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 02:57:31,213 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 02:57:31,214 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 02:57:31,215 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 02:57:31,216 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_partition_ground-1.i [2022-01-11 02:57:31,257 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a12c02cfa/1a37aea666c841fe863c3ffdaedaa4cd/FLAG9cb6be362 [2022-01-11 02:57:31,622 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 02:57:31,622 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_partition_ground-1.i [2022-01-11 02:57:31,629 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a12c02cfa/1a37aea666c841fe863c3ffdaedaa4cd/FLAG9cb6be362 [2022-01-11 02:57:32,044 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a12c02cfa/1a37aea666c841fe863c3ffdaedaa4cd [2022-01-11 02:57:32,045 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 02:57:32,047 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 02:57:32,048 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 02:57:32,048 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 02:57:32,062 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 02:57:32,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:57:32" (1/1) ... [2022-01-11 02:57:32,063 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11c4aa8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:57:32, skipping insertion in model container [2022-01-11 02:57:32,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:57:32" (1/1) ... [2022-01-11 02:57:32,067 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 02:57:32,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 02:57:32,176 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-examples/standard_partition_ground-1.i[860,873] [2022-01-11 02:57:32,187 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 02:57:32,195 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 02:57:32,204 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-examples/standard_partition_ground-1.i[860,873] [2022-01-11 02:57:32,213 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 02:57:32,222 INFO L208 MainTranslator]: Completed translation [2022-01-11 02:57:32,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:57:32 WrapperNode [2022-01-11 02:57:32,223 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 02:57:32,223 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 02:57:32,223 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 02:57:32,224 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 02:57:32,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:57:32" (1/1) ... [2022-01-11 02:57:32,232 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:57:32" (1/1) ... [2022-01-11 02:57:32,244 INFO L137 Inliner]: procedures = 18, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 91 [2022-01-11 02:57:32,244 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 02:57:32,245 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 02:57:32,245 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 02:57:32,245 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 02:57:32,250 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:57:32" (1/1) ... [2022-01-11 02:57:32,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:57:32" (1/1) ... [2022-01-11 02:57:32,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:57:32" (1/1) ... [2022-01-11 02:57:32,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:57:32" (1/1) ... [2022-01-11 02:57:32,256 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:57:32" (1/1) ... [2022-01-11 02:57:32,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:57:32" (1/1) ... [2022-01-11 02:57:32,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:57:32" (1/1) ... [2022-01-11 02:57:32,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 02:57:32,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 02:57:32,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 02:57:32,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 02:57:32,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:57:32" (1/1) ... [2022-01-11 02:57:32,274 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 02:57:32,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:57:32,312 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 02:57:32,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 02:57:32,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 02:57:32,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 02:57:32,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-11 02:57:32,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-11 02:57:32,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 02:57:32,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 02:57:32,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-11 02:57:32,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-11 02:57:32,402 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 02:57:32,403 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 02:57:32,518 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 02:57:32,522 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 02:57:32,522 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-01-11 02:57:32,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:57:32 BoogieIcfgContainer [2022-01-11 02:57:32,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 02:57:32,524 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 02:57:32,524 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 02:57:32,526 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 02:57:32,528 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:57:32" (1/1) ... [2022-01-11 02:57:32,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:57:32 BasicIcfg [2022-01-11 02:57:32,654 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 02:57:32,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 02:57:32,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 02:57:32,657 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 02:57:32,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 02:57:32" (1/4) ... [2022-01-11 02:57:32,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49e3e335 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:57:32, skipping insertion in model container [2022-01-11 02:57:32,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:57:32" (2/4) ... [2022-01-11 02:57:32,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49e3e335 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:57:32, skipping insertion in model container [2022-01-11 02:57:32,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:57:32" (3/4) ... [2022-01-11 02:57:32,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49e3e335 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 02:57:32, skipping insertion in model container [2022-01-11 02:57:32,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:57:32" (4/4) ... [2022-01-11 02:57:32,659 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_partition_ground-1.iTransformedIcfg [2022-01-11 02:57:32,666 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 02:57:32,666 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-11 02:57:32,692 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 02:57:32,700 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 02:57:32,700 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-11 02:57:32,716 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 26 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:57:32,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-11 02:57:32,720 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:57:32,720 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:57:32,721 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:57:32,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:57:32,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1997476811, now seen corresponding path program 1 times [2022-01-11 02:57:32,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:57:32,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261148395] [2022-01-11 02:57:32,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:57:32,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:57:32,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:57:32,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:57:32,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:57:32,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261148395] [2022-01-11 02:57:32,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261148395] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:57:32,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:57:32,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 02:57:32,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221783641] [2022-01-11 02:57:32,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:57:32,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 02:57:32,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:57:32,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 02:57:32,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 02:57:32,857 INFO L87 Difference]: Start difference. First operand has 27 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 26 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:57:32,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:57:32,867 INFO L93 Difference]: Finished difference Result 49 states and 68 transitions. [2022-01-11 02:57:32,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 02:57:32,868 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-01-11 02:57:32,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:57:32,873 INFO L225 Difference]: With dead ends: 49 [2022-01-11 02:57:32,873 INFO L226 Difference]: Without dead ends: 23 [2022-01-11 02:57:32,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 02:57:32,880 INFO L933 BasicCegarLoop]: 32 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, 32 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 02:57:32,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 02:57:32,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-01-11 02:57:32,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-01-11 02:57:32,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 22 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:57:32,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2022-01-11 02:57:32,908 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 9 [2022-01-11 02:57:32,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:57:32,908 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2022-01-11 02:57:32,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:57:32,910 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2022-01-11 02:57:32,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-11 02:57:32,910 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:57:32,911 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:57:32,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 02:57:32,911 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:57:32,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:57:32,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1409063283, now seen corresponding path program 1 times [2022-01-11 02:57:32,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:57:32,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788738489] [2022-01-11 02:57:32,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:57:32,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:57:32,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:57:33,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:57:33,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:57:33,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788738489] [2022-01-11 02:57:33,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788738489] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:57:33,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:57:33,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 02:57:33,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582582819] [2022-01-11 02:57:33,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:57:33,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 02:57:33,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:57:33,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 02:57:33,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 02:57:33,025 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:57:33,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:57:33,088 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2022-01-11 02:57:33,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 02:57:33,089 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-01-11 02:57:33,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:57:33,090 INFO L225 Difference]: With dead ends: 47 [2022-01-11 02:57:33,090 INFO L226 Difference]: Without dead ends: 29 [2022-01-11 02:57:33,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 02:57:33,091 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 6 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 02:57:33,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 40 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 02:57:33,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-01-11 02:57:33,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2022-01-11 02:57:33,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 23 states have (on average 1.3043478260869565) 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) [2022-01-11 02:57:33,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2022-01-11 02:57:33,095 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 9 [2022-01-11 02:57:33,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:57:33,095 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2022-01-11 02:57:33,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:57:33,096 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2022-01-11 02:57:33,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-11 02:57:33,096 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:57:33,096 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:57:33,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 02:57:33,096 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:57:33,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:57:33,097 INFO L85 PathProgramCache]: Analyzing trace with hash 231144715, now seen corresponding path program 1 times [2022-01-11 02:57:33,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:57:33,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103305989] [2022-01-11 02:57:33,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:57:33,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:57:33,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:57:33,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-11 02:57:33,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:57:33,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103305989] [2022-01-11 02:57:33,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103305989] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 02:57:33,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654744466] [2022-01-11 02:57:33,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:57:33,265 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:57:33,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:57:33,267 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:57:33,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-11 02:57:33,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:57:33,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-11 02:57:33,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:57:33,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-11 02:57:33,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:57:33,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-11 02:57:33,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654744466] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 02:57:33,610 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 02:57:33,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2022-01-11 02:57:33,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986829681] [2022-01-11 02:57:33,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 02:57:33,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 02:57:33,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:57:33,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 02:57:33,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-11 02:57:33,612 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:57:33,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:57:33,782 INFO L93 Difference]: Finished difference Result 63 states and 83 transitions. [2022-01-11 02:57:33,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 02:57:33,784 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-11 02:57:33,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:57:33,785 INFO L225 Difference]: With dead ends: 63 [2022-01-11 02:57:33,785 INFO L226 Difference]: Without dead ends: 44 [2022-01-11 02:57:33,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-11 02:57:33,786 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 40 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 02:57:33,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 81 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 02:57:33,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-01-11 02:57:33,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2022-01-11 02:57:33,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 1.3170731707317074) internal successors, (54), 42 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:57:33,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2022-01-11 02:57:33,791 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 54 transitions. Word has length 15 [2022-01-11 02:57:33,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:57:33,792 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 54 transitions. [2022-01-11 02:57:33,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:57:33,792 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2022-01-11 02:57:33,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-11 02:57:33,792 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:57:33,792 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:57:33,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-11 02:57:33,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:57:33,995 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:57:33,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:57:33,995 INFO L85 PathProgramCache]: Analyzing trace with hash 401422477, now seen corresponding path program 2 times [2022-01-11 02:57:33,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:57:33,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699463291] [2022-01-11 02:57:33,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:57:33,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:57:34,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:57:34,319 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-11 02:57:34,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:57:34,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699463291] [2022-01-11 02:57:34,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699463291] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 02:57:34,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808673687] [2022-01-11 02:57:34,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-11 02:57:34,321 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:57:34,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:57:34,336 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:57:34,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-11 02:57:34,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-11 02:57:34,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 02:57:34,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 43 conjunts are in the unsatisfiable core [2022-01-11 02:57:34,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:57:35,194 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-11 02:57:35,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:57:35,521 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:57:35,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808673687] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 02:57:35,522 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 02:57:35,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 12] total 25 [2022-01-11 02:57:35,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94596447] [2022-01-11 02:57:35,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 02:57:35,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-11 02:57:35,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:57:35,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-11 02:57:35,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=459, Unknown=0, NotChecked=0, Total=600 [2022-01-11 02:57:35,526 INFO L87 Difference]: Start difference. First operand 43 states and 54 transitions. Second operand has 25 states, 25 states have (on average 2.64) internal successors, (66), 25 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:57:36,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:57:36,927 INFO L93 Difference]: Finished difference Result 115 states and 158 transitions. [2022-01-11 02:57:36,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-11 02:57:36,927 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.64) internal successors, (66), 25 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-01-11 02:57:36,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:57:36,928 INFO L225 Difference]: With dead ends: 115 [2022-01-11 02:57:36,928 INFO L226 Difference]: Without dead ends: 87 [2022-01-11 02:57:36,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=318, Invalid=872, Unknown=0, NotChecked=0, Total=1190 [2022-01-11 02:57:36,929 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 242 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-11 02:57:36,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 225 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-11 02:57:36,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-01-11 02:57:36,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 79. [2022-01-11 02:57:36,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 77 states have (on average 1.3246753246753247) internal successors, (102), 78 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:57:36,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 102 transitions. [2022-01-11 02:57:36,937 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 102 transitions. Word has length 33 [2022-01-11 02:57:36,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:57:36,938 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 102 transitions. [2022-01-11 02:57:36,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.64) internal successors, (66), 25 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:57:36,938 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 102 transitions. [2022-01-11 02:57:36,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-11 02:57:36,939 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:57:36,939 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:57:36,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-11 02:57:37,144 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,SelfDestructingSolverStorable3 [2022-01-11 02:57:37,144 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:57:37,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:57:37,145 INFO L85 PathProgramCache]: Analyzing trace with hash 103054221, now seen corresponding path program 3 times [2022-01-11 02:57:37,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:57:37,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900578405] [2022-01-11 02:57:37,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:57:37,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:57:37,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:57:37,674 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-01-11 02:57:37,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:57:37,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900578405] [2022-01-11 02:57:37,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900578405] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 02:57:37,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910274466] [2022-01-11 02:57:37,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-11 02:57:37,675 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:57:37,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:57:37,678 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:57:37,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process