/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/float-benchs/zonotope_3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 05:58:26,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 05:58:26,904 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 05:58:26,969 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 05:58:26,970 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 05:58:26,973 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 05:58:26,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 05:58:26,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 05:58:26,980 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 05:58:26,984 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 05:58:26,985 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 05:58:26,986 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 05:58:26,986 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 05:58:26,988 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 05:58:26,990 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 05:58:26,995 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 05:58:26,996 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 05:58:26,997 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 05:58:26,999 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 05:58:27,002 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 05:58:27,003 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 05:58:27,005 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 05:58:27,007 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 05:58:27,007 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 05:58:27,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 05:58:27,021 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 05:58:27,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 05:58:27,023 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 05:58:27,023 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 05:58:27,056 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 05:58:27,057 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 05:58:27,057 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 05:58:27,057 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 05:58:27,058 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 05:58:27,058 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 05:58:27,058 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 05:58:27,058 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 05:58:27,059 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 05:58:27,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 05:58:27,059 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 05:58:27,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 05:58:27,060 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 05:58:27,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 05:58:27,060 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 05:58:27,060 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 05:58:27,060 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 05:58:27,060 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 05:58:27,060 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 05:58:27,060 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 05:58:27,061 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 05:58:27,061 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 05:58:27,061 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 05:58:27,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 05:58:27,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 05:58:27,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 05:58:27,062 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 05:58:27,062 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 05:58:27,063 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 05:58:27,063 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 05:58:27,063 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 05:58:27,063 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 05:58:27,063 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 05:58:27,063 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 05:58:27,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 05:58:27,319 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 05:58:27,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 05:58:27,322 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 05:58:27,323 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 05:58:27,324 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/zonotope_3.c [2022-01-10 05:58:27,381 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0f0af0d9/4e5901635fa9470195fb9d6f89c24774/FLAG1cd0eacd0 [2022-01-10 05:58:27,782 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 05:58:27,782 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/zonotope_3.c [2022-01-10 05:58:27,791 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0f0af0d9/4e5901635fa9470195fb9d6f89c24774/FLAG1cd0eacd0 [2022-01-10 05:58:27,808 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0f0af0d9/4e5901635fa9470195fb9d6f89c24774 [2022-01-10 05:58:27,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 05:58:27,813 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 05:58:27,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 05:58:27,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 05:58:27,818 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 05:58:27,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:58:27" (1/1) ... [2022-01-10 05:58:27,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e3a3bf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:58:27, skipping insertion in model container [2022-01-10 05:58:27,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:58:27" (1/1) ... [2022-01-10 05:58:27,825 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 05:58:27,836 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 05:58:27,996 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/zonotope_3.c[604,617] [2022-01-10 05:58:28,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 05:58:28,027 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 05:58:28,040 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/zonotope_3.c[604,617] [2022-01-10 05:58:28,052 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 05:58:28,071 INFO L208 MainTranslator]: Completed translation [2022-01-10 05:58:28,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:58:28 WrapperNode [2022-01-10 05:58:28,072 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 05:58:28,074 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 05:58:28,074 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 05:58:28,074 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 05:58:28,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:58:28" (1/1) ... [2022-01-10 05:58:28,089 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:58:28" (1/1) ... [2022-01-10 05:58:28,109 INFO L137 Inliner]: procedures = 17, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2022-01-10 05:58:28,110 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 05:58:28,110 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 05:58:28,111 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 05:58:28,111 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 05:58:28,117 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:58:28" (1/1) ... [2022-01-10 05:58:28,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:58:28" (1/1) ... [2022-01-10 05:58:28,119 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:58:28" (1/1) ... [2022-01-10 05:58:28,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:58:28" (1/1) ... [2022-01-10 05:58:28,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:58:28" (1/1) ... [2022-01-10 05:58:28,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:58:28" (1/1) ... [2022-01-10 05:58:28,136 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:58:28" (1/1) ... [2022-01-10 05:58:28,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 05:58:28,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 05:58:28,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 05:58:28,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 05:58:28,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:58:28" (1/1) ... [2022-01-10 05:58:28,147 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 05:58:28,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 05:58:28,168 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 05:58:28,183 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 05:58:28,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 05:58:28,214 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-01-10 05:58:28,214 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-01-10 05:58:28,214 INFO L130 BoogieDeclarations]: Found specification of procedure g [2022-01-10 05:58:28,214 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2022-01-10 05:58:28,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 05:58:28,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 05:58:28,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 05:58:28,293 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 05:58:28,294 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 05:58:28,426 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 05:58:28,431 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 05:58:28,431 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 05:58:28,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:58:28 BoogieIcfgContainer [2022-01-10 05:58:28,433 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 05:58:28,434 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 05:58:28,434 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 05:58:28,436 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 05:58:28,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:58:27" (1/3) ... [2022-01-10 05:58:28,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@422588e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:58:28, skipping insertion in model container [2022-01-10 05:58:28,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:58:28" (2/3) ... [2022-01-10 05:58:28,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@422588e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:58:28, skipping insertion in model container [2022-01-10 05:58:28,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:58:28" (3/3) ... [2022-01-10 05:58:28,439 INFO L111 eAbstractionObserver]: Analyzing ICFG zonotope_3.c [2022-01-10 05:58:28,442 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 05:58:28,442 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 05:58:28,500 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 05:58:28,506 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 05:58:28,506 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 05:58:28,531 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 25 states have internal predecessors, (29), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-10 05:58:28,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-10 05:58:28,535 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:58:28,536 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:58:28,537 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:58:28,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:58:28,545 INFO L85 PathProgramCache]: Analyzing trace with hash -791121696, now seen corresponding path program 1 times [2022-01-10 05:58:28,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:58:28,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [258275572] [2022-01-10 05:58:28,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:58:28,557 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:58:28,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:58:28,561 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:58:28,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 05:58:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:58:28,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 05:58:28,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:58:28,765 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 05:58:28,766 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 05:58:28,766 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:58:28,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [258275572] [2022-01-10 05:58:28,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [258275572] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 05:58:28,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 05:58:28,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 05:58:28,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930191824] [2022-01-10 05:58:28,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 05:58:28,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 05:58:28,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:58:28,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 05:58:28,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:58:28,799 INFO L87 Difference]: Start difference. First operand has 36 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 25 states have internal predecessors, (29), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-10 05:58:28,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:58:28,844 INFO L93 Difference]: Finished difference Result 74 states and 95 transitions. [2022-01-10 05:58:28,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 05:58:28,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 26 [2022-01-10 05:58:28,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:58:28,852 INFO L225 Difference]: With dead ends: 74 [2022-01-10 05:58:28,856 INFO L226 Difference]: Without dead ends: 44 [2022-01-10 05:58:28,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 05:58:28,868 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 7 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 05:58:28,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 81 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 05:58:28,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-01-10 05:58:28,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 33. [2022-01-10 05:58:28,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-10 05:58:28,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2022-01-10 05:58:28,900 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 26 [2022-01-10 05:58:28,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:58:28,900 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2022-01-10 05:58:28,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-01-10 05:58:28,901 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2022-01-10 05:58:28,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-10 05:58:28,902 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:58:28,903 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:58:28,909 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-01-10 05:58:29,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:58:29,107 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:58:29,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:58:29,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1098789301, now seen corresponding path program 1 times [2022-01-10 05:58:29,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:58:29,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1372328096] [2022-01-10 05:58:29,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 05:58:29,109 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:58:29,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:58:29,110 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:58:29,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 05:58:29,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 05:58:29,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 05:58:29,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:58:29,259 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-10 05:58:29,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 05:58:29,390 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-10 05:58:29,391 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:58:29,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1372328096] [2022-01-10 05:58:29,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1372328096] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 05:58:29,391 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 05:58:29,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-01-10 05:58:29,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518996567] [2022-01-10 05:58:29,392 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 05:58:29,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 05:58:29,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:58:29,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 05:58:29,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 05:58:29,395 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-01-10 05:58:29,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:58:29,524 INFO L93 Difference]: Finished difference Result 73 states and 93 transitions. [2022-01-10 05:58:29,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 05:58:29,525 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 50 [2022-01-10 05:58:29,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:58:29,527 INFO L225 Difference]: With dead ends: 73 [2022-01-10 05:58:29,527 INFO L226 Difference]: Without dead ends: 69 [2022-01-10 05:58:29,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-01-10 05:58:29,528 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 28 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 05:58:29,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 157 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 05:58:29,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-01-10 05:58:29,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-01-10 05:58:29,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 46 states have (on average 1.0217391304347827) internal successors, (47), 46 states have internal predecessors, (47), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-01-10 05:58:29,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 87 transitions. [2022-01-10 05:58:29,541 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 87 transitions. Word has length 50 [2022-01-10 05:58:29,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:58:29,542 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 87 transitions. [2022-01-10 05:58:29,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-01-10 05:58:29,542 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 87 transitions. [2022-01-10 05:58:29,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-10 05:58:29,546 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:58:29,546 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:58:29,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 05:58:29,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:58:29,754 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:58:29,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:58:29,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1576992628, now seen corresponding path program 2 times [2022-01-10 05:58:29,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:58:29,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [751508337] [2022-01-10 05:58:29,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 05:58:29,757 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:58:29,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:58:29,760 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:58:29,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 05:58:29,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 05:58:29,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 05:58:29,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 05:58:29,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:58:30,135 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2022-01-10 05:58:30,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 05:58:30,521 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2022-01-10 05:58:30,521 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:58:30,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [751508337] [2022-01-10 05:58:30,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [751508337] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 05:58:30,521 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 05:58:30,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-01-10 05:58:30,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831902935] [2022-01-10 05:58:30,522 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 05:58:30,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-10 05:58:30,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:58:30,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-10 05:58:30,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-01-10 05:58:30,524 INFO L87 Difference]: Start difference. First operand 69 states and 87 transitions. Second operand has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 9 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 9 states have call predecessors, (36), 9 states have call successors, (36) [2022-01-10 05:58:30,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:58:30,979 INFO L93 Difference]: Finished difference Result 145 states and 192 transitions. [2022-01-10 05:58:30,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 05:58:30,979 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 9 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 9 states have call predecessors, (36), 9 states have call successors, (36) Word has length 122 [2022-01-10 05:58:30,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:58:30,982 INFO L225 Difference]: With dead ends: 145 [2022-01-10 05:58:30,982 INFO L226 Difference]: Without dead ends: 141 [2022-01-10 05:58:30,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-01-10 05:58:30,984 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 77 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 05:58:30,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 490 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 05:58:30,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-01-10 05:58:31,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2022-01-10 05:58:31,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 94 states have (on average 1.0106382978723405) internal successors, (95), 94 states have internal predecessors, (95), 44 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-01-10 05:58:31,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 183 transitions. [2022-01-10 05:58:31,006 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 183 transitions. Word has length 122 [2022-01-10 05:58:31,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:58:31,007 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 183 transitions. [2022-01-10 05:58:31,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 9 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 9 states have call predecessors, (36), 9 states have call successors, (36) [2022-01-10 05:58:31,007 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 183 transitions. [2022-01-10 05:58:31,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-01-10 05:58:31,018 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:58:31,018 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:58:31,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 05:58:31,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:58:31,230 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:58:31,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:58:31,231 INFO L85 PathProgramCache]: Analyzing trace with hash 605772302, now seen corresponding path program 3 times [2022-01-10 05:58:31,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:58:31,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1427021838] [2022-01-10 05:58:31,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-10 05:58:31,232 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:58:31,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:58:31,236 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:58:31,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 05:58:31,356 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2022-01-10 05:58:31,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 05:58:31,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-10 05:58:31,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:58:31,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 0 proven. 550 refuted. 0 times theorem prover too weak. 1386 trivial. 0 not checked. [2022-01-10 05:58:31,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 05:58:33,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 0 proven. 550 refuted. 0 times theorem prover too weak. 1386 trivial. 0 not checked. [2022-01-10 05:58:33,640 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:58:33,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1427021838] [2022-01-10 05:58:33,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1427021838] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 05:58:33,641 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 05:58:33,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 25 [2022-01-10 05:58:33,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542557921] [2022-01-10 05:58:33,641 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 05:58:33,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-10 05:58:33,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:58:33,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-10 05:58:33,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2022-01-10 05:58:33,644 INFO L87 Difference]: Start difference. First operand 141 states and 183 transitions. Second operand has 25 states, 25 states have (on average 7.04) internal successors, (176), 25 states have internal predecessors, (176), 21 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 21 states have call predecessors, (84), 21 states have call successors, (84) [2022-01-10 05:58:35,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:58:35,748 INFO L93 Difference]: Finished difference Result 289 states and 390 transitions. [2022-01-10 05:58:35,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-10 05:58:35,749 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 7.04) internal successors, (176), 25 states have internal predecessors, (176), 21 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 21 states have call predecessors, (84), 21 states have call successors, (84) Word has length 266 [2022-01-10 05:58:35,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:58:35,753 INFO L225 Difference]: With dead ends: 289 [2022-01-10 05:58:35,753 INFO L226 Difference]: Without dead ends: 285 [2022-01-10 05:58:35,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 507 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=454, Invalid=806, Unknown=0, NotChecked=0, Total=1260 [2022-01-10 05:58:35,754 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 324 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 1684 SdHoareTripleChecker+Invalid, 1251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 05:58:35,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 1684 Invalid, 1251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 05:58:35,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-01-10 05:58:35,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2022-01-10 05:58:35,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 190 states have (on average 1.0052631578947369) internal successors, (191), 190 states have internal predecessors, (191), 92 states have call successors, (92), 2 states have call predecessors, (92), 2 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2022-01-10 05:58:35,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 375 transitions. [2022-01-10 05:58:35,789 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 375 transitions. Word has length 266 [2022-01-10 05:58:35,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:58:35,791 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 375 transitions. [2022-01-10 05:58:35,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.04) internal successors, (176), 25 states have internal predecessors, (176), 21 states have call successors, (84), 1 states have call predecessors, (84), 1 states have return successors, (84), 21 states have call predecessors, (84), 21 states have call successors, (84) [2022-01-10 05:58:35,791 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 375 transitions. [2022-01-10 05:58:35,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2022-01-10 05:58:35,803 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:58:35,807 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:58:35,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 05:58:36,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:58:36,016 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:58:36,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:58:36,017 INFO L85 PathProgramCache]: Analyzing trace with hash -853810926, now seen corresponding path program 4 times [2022-01-10 05:58:36,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:58:36,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [494157945] [2022-01-10 05:58:36,018 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-10 05:58:36,018 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:58:36,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:58:36,019 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:58:36,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 05:58:36,192 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-10 05:58:36,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 05:58:36,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-10 05:58:36,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:58:37,337 INFO L134 CoverageAnalysis]: Checked inductivity of 9004 backedges. 0 proven. 2794 refuted. 0 times theorem prover too weak. 6210 trivial. 0 not checked. [2022-01-10 05:58:37,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 05:58:39,427 INFO L134 CoverageAnalysis]: Checked inductivity of 9004 backedges. 0 proven. 2794 refuted. 0 times theorem prover too weak. 6210 trivial. 0 not checked. [2022-01-10 05:58:39,428 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:58:39,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [494157945] [2022-01-10 05:58:39,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [494157945] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 05:58:39,428 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 05:58:39,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2022-01-10 05:58:39,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210587776] [2022-01-10 05:58:39,429 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 05:58:39,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-01-10 05:58:39,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:58:39,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-01-10 05:58:39,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2022-01-10 05:58:39,433 INFO L87 Difference]: Start difference. First operand 285 states and 375 transitions. Second operand has 48 states, 48 states have (on average 7.666666666666667) internal successors, (368), 48 states have internal predecessors, (368), 45 states have call successors, (180), 1 states have call predecessors, (180), 1 states have return successors, (180), 45 states have call predecessors, (180), 45 states have call successors, (180) [2022-01-10 05:58:46,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 05:58:46,917 INFO L93 Difference]: Finished difference Result 577 states and 786 transitions. [2022-01-10 05:58:46,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-10 05:58:46,918 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 7.666666666666667) internal successors, (368), 48 states have internal predecessors, (368), 45 states have call successors, (180), 1 states have call predecessors, (180), 1 states have return successors, (180), 45 states have call predecessors, (180), 45 states have call successors, (180) Word has length 554 [2022-01-10 05:58:46,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 05:58:46,923 INFO L225 Difference]: With dead ends: 577 [2022-01-10 05:58:46,923 INFO L226 Difference]: Without dead ends: 573 [2022-01-10 05:58:46,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1128 GetRequests, 1060 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2022-01-10 05:58:46,926 INFO L933 BasicCegarLoop]: 436 mSDtfsCounter, 329 mSDsluCounter, 5832 mSDsCounter, 0 mSdLazyCounter, 4390 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 6268 SdHoareTripleChecker+Invalid, 4616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 4390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 05:58:46,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 6268 Invalid, 4616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 4390 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 05:58:46,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2022-01-10 05:58:46,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 573. [2022-01-10 05:58:46,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 382 states have (on average 1.0026178010471205) internal successors, (383), 382 states have internal predecessors, (383), 188 states have call successors, (188), 2 states have call predecessors, (188), 2 states have return successors, (188), 188 states have call predecessors, (188), 188 states have call successors, (188) [2022-01-10 05:58:46,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 759 transitions. [2022-01-10 05:58:46,974 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 759 transitions. Word has length 554 [2022-01-10 05:58:46,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 05:58:46,975 INFO L470 AbstractCegarLoop]: Abstraction has 573 states and 759 transitions. [2022-01-10 05:58:46,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 7.666666666666667) internal successors, (368), 48 states have internal predecessors, (368), 45 states have call successors, (180), 1 states have call predecessors, (180), 1 states have return successors, (180), 45 states have call predecessors, (180), 45 states have call successors, (180) [2022-01-10 05:58:46,976 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 759 transitions. [2022-01-10 05:58:47,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1131 [2022-01-10 05:58:47,033 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 05:58:47,034 INFO L514 BasicCegarLoop]: trace histogram [94, 94, 94, 94, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 05:58:47,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 05:58:47,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 05:58:47,248 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 05:58:47,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 05:58:47,250 INFO L85 PathProgramCache]: Analyzing trace with hash -315867366, now seen corresponding path program 5 times [2022-01-10 05:58:47,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 05:58:47,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [110964300] [2022-01-10 05:58:47,251 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-10 05:58:47,251 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 05:58:47,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 05:58:47,252 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 05:58:47,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 05:58:47,780 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 73 check-sat command(s) [2022-01-10 05:58:47,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 05:58:47,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 1660 conjuncts, 49 conjunts are in the unsatisfiable core [2022-01-10 05:58:47,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 05:58:50,368 INFO L134 CoverageAnalysis]: Checked inductivity of 38692 backedges. 0 proven. 12466 refuted. 0 times theorem prover too weak. 26226 trivial. 0 not checked. [2022-01-10 05:58:50,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 05:58:59,749 INFO L134 CoverageAnalysis]: Checked inductivity of 38692 backedges. 0 proven. 12466 refuted. 0 times theorem prover too weak. 26226 trivial. 0 not checked. [2022-01-10 05:58:59,749 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 05:58:59,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [110964300] [2022-01-10 05:58:59,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [110964300] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 05:58:59,750 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 05:58:59,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 50] total 97 [2022-01-10 05:58:59,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434203525] [2022-01-10 05:58:59,750 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 05:58:59,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2022-01-10 05:58:59,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 05:58:59,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2022-01-10 05:58:59,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2448, Invalid=6864, Unknown=0, NotChecked=0, Total=9312 [2022-01-10 05:58:59,757 INFO L87 Difference]: Start difference. First operand 573 states and 759 transitions. Second operand has 97 states, 97 states have (on average 7.752577319587629) internal successors, (752), 97 states have internal predecessors, (752), 93 states have call successors, (372), 1 states have call predecessors, (372), 1 states have return successors, (372), 93 states have call predecessors, (372), 93 states have call successors, (372)