/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/recursive-simple/id_i25_o25-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 17:47:54,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 17:47:54,216 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 17:47:54,259 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 17:47:54,260 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 17:47:54,261 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 17:47:54,263 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 17:47:54,290 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 17:47:54,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 17:47:54,293 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 17:47:54,295 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 17:47:54,296 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 17:47:54,297 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 17:47:54,298 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 17:47:54,299 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 17:47:54,301 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 17:47:54,302 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 17:47:54,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 17:47:54,305 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 17:47:54,308 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 17:47:54,309 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 17:47:54,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 17:47:54,312 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 17:47:54,313 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 17:47:54,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-16 17:47:54,329 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 17:47:54,330 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 17:47:54,331 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 17:47:54,332 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-16 17:47:54,367 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 17:47:54,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 17:47:54,368 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 17:47:54,369 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 17:47:54,372 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 17:47:54,373 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 17:47:54,375 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 17:47:54,376 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 17:47:54,376 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 17:47:54,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 17:47:54,378 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 17:47:54,378 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 17:47:54,378 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 17:47:54,378 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 17:47:54,379 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 17:47:54,379 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 17:47:54,379 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 17:47:54,379 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 17:47:54,380 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 17:47:54,380 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 17:47:54,380 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 17:47:54,380 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 17:47:54,381 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 17:47:54,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 17:47:54,381 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 17:47:54,381 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 17:47:54,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 17:47:54,382 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 17:47:54,383 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 17:47:54,383 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 17:47:54,383 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 17:47:54,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 17:47:54,384 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 17:47:54,384 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 17:47:54,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 17:47:54,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 17:47:54,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 17:47:54,858 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 17:47:54,858 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 17:47:54,860 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/id_i25_o25-2.c [2022-10-16 17:47:54,955 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94835ec9a/d9ea1acd0c2f4cecb542343189ab6174/FLAG9faf31da6 [2022-10-16 17:47:55,530 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 17:47:55,530 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_i25_o25-2.c [2022-10-16 17:47:55,536 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94835ec9a/d9ea1acd0c2f4cecb542343189ab6174/FLAG9faf31da6 [2022-10-16 17:47:55,925 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94835ec9a/d9ea1acd0c2f4cecb542343189ab6174 [2022-10-16 17:47:55,927 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 17:47:55,933 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 17:47:55,935 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 17:47:55,935 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 17:47:55,940 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 17:47:55,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:47:55" (1/1) ... [2022-10-16 17:47:55,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d4fde3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:47:55, skipping insertion in model container [2022-10-16 17:47:55,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:47:55" (1/1) ... [2022-10-16 17:47:55,951 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 17:47:55,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 17:47:56,113 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_i25_o25-2.c[454,467] [2022-10-16 17:47:56,114 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 17:47:56,130 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 17:47:56,153 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_i25_o25-2.c[454,467] [2022-10-16 17:47:56,155 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 17:47:56,174 INFO L208 MainTranslator]: Completed translation [2022-10-16 17:47:56,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:47:56 WrapperNode [2022-10-16 17:47:56,179 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 17:47:56,183 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 17:47:56,183 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 17:47:56,184 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 17:47:56,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:47:56" (1/1) ... [2022-10-16 17:47:56,202 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:47:56" (1/1) ... [2022-10-16 17:47:56,224 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2022-10-16 17:47:56,224 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 17:47:56,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 17:47:56,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 17:47:56,226 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 17:47:56,237 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:47:56" (1/1) ... [2022-10-16 17:47:56,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:47:56" (1/1) ... [2022-10-16 17:47:56,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:47:56" (1/1) ... [2022-10-16 17:47:56,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:47:56" (1/1) ... [2022-10-16 17:47:56,246 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:47:56" (1/1) ... [2022-10-16 17:47:56,249 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:47:56" (1/1) ... [2022-10-16 17:47:56,255 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:47:56" (1/1) ... [2022-10-16 17:47:56,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:47:56" (1/1) ... [2022-10-16 17:47:56,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 17:47:56,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 17:47:56,265 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 17:47:56,265 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 17:47:56,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:47:56" (1/1) ... [2022-10-16 17:47:56,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 17:47:56,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:47:56,320 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) [2022-10-16 17:47:56,345 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 [2022-10-16 17:47:56,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 17:47:56,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 17:47:56,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 17:47:56,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 17:47:56,430 INFO L130 BoogieDeclarations]: Found specification of procedure id [2022-10-16 17:47:56,431 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2022-10-16 17:47:56,532 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 17:47:56,535 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 17:47:56,736 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 17:47:56,747 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 17:47:56,748 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-16 17:47:56,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:47:56 BoogieIcfgContainer [2022-10-16 17:47:56,751 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 17:47:56,755 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 17:47:56,755 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 17:47:56,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 17:47:56,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:47:55" (1/3) ... [2022-10-16 17:47:56,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@613c690b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:47:56, skipping insertion in model container [2022-10-16 17:47:56,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:47:56" (2/3) ... [2022-10-16 17:47:56,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@613c690b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:47:56, skipping insertion in model container [2022-10-16 17:47:56,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:47:56" (3/3) ... [2022-10-16 17:47:56,765 INFO L112 eAbstractionObserver]: Analyzing ICFG id_i25_o25-2.c [2022-10-16 17:47:56,793 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 17:47:56,793 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-10-16 17:47:56,885 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 17:47:56,900 INFO L357 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=FINITE_AUTOMATA, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@59d7183e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 17:47:56,900 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-10-16 17:47:56,906 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 15 states have (on average 1.4) internal successors, (21), 19 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 17:47:56,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-16 17:47:56,932 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:47:56,933 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-16 17:47:56,934 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-16 17:47:56,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:47:56,944 INFO L85 PathProgramCache]: Analyzing trace with hash 890289268, now seen corresponding path program 1 times [2022-10-16 17:47:56,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:47:56,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758573964] [2022-10-16 17:47:56,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:47:56,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:47:57,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:57,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:47:57,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:47:57,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758573964] [2022-10-16 17:47:57,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758573964] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:47:57,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:47:57,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:47:57,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653803984] [2022-10-16 17:47:57,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:47:57,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:47:57,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:47:57,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:47:57,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:47:57,367 INFO L87 Difference]: Start difference. First operand has 23 states, 15 states have (on average 1.4) internal successors, (21), 19 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:47:57,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:47:57,496 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2022-10-16 17:47:57,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:47:57,499 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-16 17:47:57,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:47:57,508 INFO L225 Difference]: With dead ends: 26 [2022-10-16 17:47:57,508 INFO L226 Difference]: Without dead ends: 16 [2022-10-16 17:47:57,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-16 17:47:57,517 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 27 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:47:57,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 36 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:47:57,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-10-16 17:47:57,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-10-16 17:47:57,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.4) internal successors, (14), 13 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 17:47:57,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-10-16 17:47:57,570 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 6 [2022-10-16 17:47:57,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:47:57,570 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-10-16 17:47:57,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:47:57,571 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-10-16 17:47:57,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-16 17:47:57,572 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:47:57,572 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:47:57,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 17:47:57,572 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-16 17:47:57,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:47:57,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1829163585, now seen corresponding path program 1 times [2022-10-16 17:47:57,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:47:57,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57890683] [2022-10-16 17:47:57,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:47:57,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:47:57,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:57,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:47:57,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:47:57,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57890683] [2022-10-16 17:47:57,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57890683] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:47:57,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:47:57,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 17:47:57,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856748247] [2022-10-16 17:47:57,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:47:57,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 17:47:57,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:47:57,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 17:47:57,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-16 17:47:57,664 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:47:57,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:47:57,747 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2022-10-16 17:47:57,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 17:47:57,748 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-10-16 17:47:57,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:47:57,749 INFO L225 Difference]: With dead ends: 31 [2022-10-16 17:47:57,749 INFO L226 Difference]: Without dead ends: 26 [2022-10-16 17:47:57,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-16 17:47:57,752 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 17 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:47:57,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 50 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:47:57,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-10-16 17:47:57,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2022-10-16 17:47:57,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 17:47:57,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-10-16 17:47:57,762 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 7 [2022-10-16 17:47:57,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:47:57,763 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-10-16 17:47:57,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:47:57,763 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-10-16 17:47:57,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-16 17:47:57,768 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:47:57,769 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-10-16 17:47:57,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 17:47:57,769 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-16 17:47:57,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:47:57,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1830524380, now seen corresponding path program 1 times [2022-10-16 17:47:57,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:47:57,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959747874] [2022-10-16 17:47:57,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:47:57,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:47:57,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:57,934 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:47:57,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:47:57,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959747874] [2022-10-16 17:47:57,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959747874] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:47:57,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501897452] [2022-10-16 17:47:57,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:47:57,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:47:57,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:47:57,938 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) [2022-10-16 17:47:57,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-16 17:47:58,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:58,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-16 17:47:58,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:47:58,100 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:47:58,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:47:58,199 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:47:58,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501897452] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:47:58,200 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:47:58,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-10-16 17:47:58,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379453073] [2022-10-16 17:47:58,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:47:58,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-16 17:47:58,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:47:58,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-16 17:47:58,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-10-16 17:47:58,210 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 12 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:47:58,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:47:58,411 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions. [2022-10-16 17:47:58,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-16 17:47:58,412 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-10-16 17:47:58,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:47:58,415 INFO L225 Difference]: With dead ends: 74 [2022-10-16 17:47:58,416 INFO L226 Difference]: Without dead ends: 66 [2022-10-16 17:47:58,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2022-10-16 17:47:58,419 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 110 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:47:58,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 89 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:47:58,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-10-16 17:47:58,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2022-10-16 17:47:58,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 41 states have (on average 1.3170731707317074) internal successors, (54), 43 states have internal predecessors, (54), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-16 17:47:58,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2022-10-16 17:47:58,437 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 12 [2022-10-16 17:47:58,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:47:58,437 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2022-10-16 17:47:58,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:47:58,438 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2022-10-16 17:47:58,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-10-16 17:47:58,439 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:47:58,439 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:47:58,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-16 17:47:58,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:47:58,653 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-16 17:47:58,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:47:58,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1359868900, now seen corresponding path program 1 times [2022-10-16 17:47:58,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:47:58,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510336824] [2022-10-16 17:47:58,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:47:58,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:47:58,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:58,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-16 17:47:58,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:58,777 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-16 17:47:58,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:47:58,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510336824] [2022-10-16 17:47:58,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510336824] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:47:58,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:47:58,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 17:47:58,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117068402] [2022-10-16 17:47:58,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:47:58,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 17:47:58,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:47:58,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 17:47:58,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 17:47:58,781 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 17:47:58,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:47:58,803 INFO L93 Difference]: Finished difference Result 74 states and 92 transitions. [2022-10-16 17:47:58,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 17:47:58,804 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-10-16 17:47:58,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:47:58,807 INFO L225 Difference]: With dead ends: 74 [2022-10-16 17:47:58,807 INFO L226 Difference]: Without dead ends: 72 [2022-10-16 17:47:58,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 17:47:58,810 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 1 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:47:58,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 38 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:47:58,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-10-16 17:47:58,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2022-10-16 17:47:58,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 56 states have (on average 1.2321428571428572) internal successors, (69), 57 states have internal predecessors, (69), 6 states have call successors, (6), 5 states have call predecessors, (6), 7 states have return successors, (9), 9 states have call predecessors, (9), 5 states have call successors, (9) [2022-10-16 17:47:58,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 84 transitions. [2022-10-16 17:47:58,829 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 84 transitions. Word has length 19 [2022-10-16 17:47:58,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:47:58,830 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 84 transitions. [2022-10-16 17:47:58,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 17:47:58,830 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 84 transitions. [2022-10-16 17:47:58,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-10-16 17:47:58,831 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:47:58,832 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:47:58,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-16 17:47:58,832 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-16 17:47:58,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:47:58,833 INFO L85 PathProgramCache]: Analyzing trace with hash -2128706883, now seen corresponding path program 1 times [2022-10-16 17:47:58,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:47:58,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966332945] [2022-10-16 17:47:58,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:47:58,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:47:58,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:58,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 17:47:58,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:59,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:47:59,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:59,114 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 17:47:59,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:47:59,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966332945] [2022-10-16 17:47:59,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966332945] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:47:59,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327852747] [2022-10-16 17:47:59,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:47:59,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:47:59,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:47:59,131 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) [2022-10-16 17:47:59,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-16 17:47:59,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:47:59,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-16 17:47:59,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:47:59,340 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-16 17:47:59,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:47:59,635 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 17:47:59,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327852747] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:47:59,635 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:47:59,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 18 [2022-10-16 17:47:59,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325110813] [2022-10-16 17:47:59,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:47:59,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-16 17:47:59,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:47:59,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-16 17:47:59,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2022-10-16 17:47:59,639 INFO L87 Difference]: Start difference. First operand 72 states and 84 transitions. Second operand has 18 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 7 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2022-10-16 17:47:59,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:47:59,877 INFO L93 Difference]: Finished difference Result 101 states and 117 transitions. [2022-10-16 17:47:59,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-16 17:47:59,877 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 7 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 24 [2022-10-16 17:47:59,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:47:59,879 INFO L225 Difference]: With dead ends: 101 [2022-10-16 17:47:59,879 INFO L226 Difference]: Without dead ends: 79 [2022-10-16 17:47:59,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=145, Invalid=557, Unknown=0, NotChecked=0, Total=702 [2022-10-16 17:47:59,882 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 109 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:47:59,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 91 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:47:59,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-10-16 17:47:59,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 72. [2022-10-16 17:47:59,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 56 states have (on average 1.1964285714285714) internal successors, (67), 56 states have internal predecessors, (67), 6 states have call successors, (6), 5 states have call predecessors, (6), 7 states have return successors, (10), 10 states have call predecessors, (10), 5 states have call successors, (10) [2022-10-16 17:47:59,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 83 transitions. [2022-10-16 17:47:59,896 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 83 transitions. Word has length 24 [2022-10-16 17:47:59,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:47:59,897 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 83 transitions. [2022-10-16 17:47:59,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 7 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2022-10-16 17:47:59,898 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 83 transitions. [2022-10-16 17:47:59,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-10-16 17:47:59,899 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:47:59,899 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1] [2022-10-16 17:47:59,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-16 17:48:00,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:48:00,115 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-16 17:48:00,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:48:00,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1294342655, now seen corresponding path program 2 times [2022-10-16 17:48:00,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:48:00,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060638818] [2022-10-16 17:48:00,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:48:00,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:48:00,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:00,303 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:48:00,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:48:00,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060638818] [2022-10-16 17:48:00,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060638818] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:48:00,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793342994] [2022-10-16 17:48:00,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:48:00,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:48:00,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:48:00,306 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) [2022-10-16 17:48:00,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-16 17:48:00,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:48:00,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:48:00,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-16 17:48:00,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:48:00,412 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:48:00,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:48:00,597 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:48:00,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793342994] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:48:00,597 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:48:00,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2022-10-16 17:48:00,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411683252] [2022-10-16 17:48:00,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:48:00,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-10-16 17:48:00,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:48:00,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-10-16 17:48:00,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2022-10-16 17:48:00,600 INFO L87 Difference]: Start difference. First operand 72 states and 83 transitions. Second operand has 24 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 14 states have internal predecessors, (43), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:48:00,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:48:00,994 INFO L93 Difference]: Finished difference Result 220 states and 236 transitions. [2022-10-16 17:48:00,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-10-16 17:48:00,995 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 14 states have internal predecessors, (43), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-10-16 17:48:00,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:48:00,997 INFO L225 Difference]: With dead ends: 220 [2022-10-16 17:48:00,997 INFO L226 Difference]: Without dead ends: 197 [2022-10-16 17:48:00,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=389, Invalid=1017, Unknown=0, NotChecked=0, Total=1406 [2022-10-16 17:48:01,000 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 304 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 17:48:01,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 202 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 17:48:01,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-10-16 17:48:01,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 177. [2022-10-16 17:48:01,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 139 states have (on average 1.2014388489208634) internal successors, (167), 139 states have internal predecessors, (167), 12 states have call successors, (12), 11 states have call predecessors, (12), 23 states have return successors, (26), 26 states have call predecessors, (26), 11 states have call successors, (26) [2022-10-16 17:48:01,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 205 transitions. [2022-10-16 17:48:01,032 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 205 transitions. Word has length 27 [2022-10-16 17:48:01,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:48:01,033 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 205 transitions. [2022-10-16 17:48:01,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 14 states have internal predecessors, (43), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:48:01,033 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 205 transitions. [2022-10-16 17:48:01,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-10-16 17:48:01,034 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:48:01,035 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-10-16 17:48:01,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-16 17:48:01,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:48:01,251 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-16 17:48:01,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:48:01,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1697859681, now seen corresponding path program 1 times [2022-10-16 17:48:01,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:48:01,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117608768] [2022-10-16 17:48:01,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:48:01,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:48:01,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:01,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-16 17:48:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:01,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:48:01,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:01,314 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-10-16 17:48:01,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:48:01,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117608768] [2022-10-16 17:48:01,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117608768] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:48:01,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:48:01,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 17:48:01,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339599847] [2022-10-16 17:48:01,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:48:01,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 17:48:01,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:48:01,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 17:48:01,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:48:01,317 INFO L87 Difference]: Start difference. First operand 177 states and 205 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 17:48:01,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:48:01,328 INFO L93 Difference]: Finished difference Result 177 states and 205 transitions. [2022-10-16 17:48:01,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 17:48:01,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2022-10-16 17:48:01,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:48:01,331 INFO L225 Difference]: With dead ends: 177 [2022-10-16 17:48:01,331 INFO L226 Difference]: Without dead ends: 175 [2022-10-16 17:48:01,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:48:01,333 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 1 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:48:01,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 25 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:48:01,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-10-16 17:48:01,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2022-10-16 17:48:01,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 138 states have (on average 1.1231884057971016) internal successors, (155), 137 states have internal predecessors, (155), 12 states have call successors, (12), 11 states have call predecessors, (12), 23 states have return successors, (26), 26 states have call predecessors, (26), 11 states have call successors, (26) [2022-10-16 17:48:01,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 193 transitions. [2022-10-16 17:48:01,352 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 193 transitions. Word has length 40 [2022-10-16 17:48:01,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:48:01,352 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 193 transitions. [2022-10-16 17:48:01,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 17:48:01,353 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 193 transitions. [2022-10-16 17:48:01,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-10-16 17:48:01,354 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:48:01,355 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2022-10-16 17:48:01,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-16 17:48:01,355 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-16 17:48:01,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:48:01,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1883083449, now seen corresponding path program 2 times [2022-10-16 17:48:01,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:48:01,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31383448] [2022-10-16 17:48:01,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:48:01,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:48:01,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:01,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 17:48:01,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:01,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:48:01,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:01,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:48:01,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:01,706 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 4 proven. 62 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 17:48:01,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:48:01,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31383448] [2022-10-16 17:48:01,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31383448] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:48:01,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485032824] [2022-10-16 17:48:01,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:48:01,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:48:01,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:48:01,711 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:48:01,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-16 17:48:01,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:48:01,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:48:01,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 14 conjunts are in the unsatisfiable core [2022-10-16 17:48:01,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:48:01,895 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 4 proven. 60 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-16 17:48:01,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:48:02,309 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 4 proven. 66 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-16 17:48:02,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485032824] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:48:02,309 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:48:02,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 15] total 26 [2022-10-16 17:48:02,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463679078] [2022-10-16 17:48:02,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:48:02,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-10-16 17:48:02,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:48:02,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-10-16 17:48:02,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=525, Unknown=0, NotChecked=0, Total=650 [2022-10-16 17:48:02,312 INFO L87 Difference]: Start difference. First operand 175 states and 193 transitions. Second operand has 26 states, 24 states have (on average 2.5) internal successors, (60), 20 states have internal predecessors, (60), 12 states have call successors, (12), 7 states have call predecessors, (12), 4 states have return successors, (8), 3 states have call predecessors, (8), 6 states have call successors, (8) [2022-10-16 17:48:02,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:48:02,553 INFO L93 Difference]: Finished difference Result 224 states and 241 transitions. [2022-10-16 17:48:02,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-10-16 17:48:02,554 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.5) internal successors, (60), 20 states have internal predecessors, (60), 12 states have call successors, (12), 7 states have call predecessors, (12), 4 states have return successors, (8), 3 states have call predecessors, (8), 6 states have call successors, (8) Word has length 44 [2022-10-16 17:48:02,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:48:02,556 INFO L225 Difference]: With dead ends: 224 [2022-10-16 17:48:02,556 INFO L226 Difference]: Without dead ends: 157 [2022-10-16 17:48:02,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 77 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=278, Invalid=982, Unknown=0, NotChecked=0, Total=1260 [2022-10-16 17:48:02,559 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 179 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:48:02,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 315 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:48:02,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-10-16 17:48:02,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 139. [2022-10-16 17:48:02,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 110 states have (on average 1.1181818181818182) internal successors, (123), 109 states have internal predecessors, (123), 12 states have call successors, (12), 11 states have call predecessors, (12), 15 states have return successors, (18), 18 states have call predecessors, (18), 11 states have call successors, (18) [2022-10-16 17:48:02,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 153 transitions. [2022-10-16 17:48:02,576 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 153 transitions. Word has length 44 [2022-10-16 17:48:02,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:48:02,577 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 153 transitions. [2022-10-16 17:48:02,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 2.5) internal successors, (60), 20 states have internal predecessors, (60), 12 states have call successors, (12), 7 states have call predecessors, (12), 4 states have return successors, (8), 3 states have call predecessors, (8), 6 states have call successors, (8) [2022-10-16 17:48:02,577 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 153 transitions. [2022-10-16 17:48:02,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-10-16 17:48:02,579 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:48:02,579 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1, 1, 1] [2022-10-16 17:48:02,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-16 17:48:02,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:48:02,794 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-16 17:48:02,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:48:02,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1160556449, now seen corresponding path program 3 times [2022-10-16 17:48:02,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:48:02,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631470711] [2022-10-16 17:48:02,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:48:02,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:48:02,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:03,283 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:48:03,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:48:03,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631470711] [2022-10-16 17:48:03,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631470711] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:48:03,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518337437] [2022-10-16 17:48:03,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 17:48:03,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:48:03,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:48:03,285 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:48:03,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-16 17:48:03,332 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-10-16 17:48:03,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:48:03,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 24 conjunts are in the unsatisfiable core [2022-10-16 17:48:03,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:48:03,451 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:48:03,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:48:04,045 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:48:04,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518337437] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:48:04,046 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:48:04,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2022-10-16 17:48:04,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882467439] [2022-10-16 17:48:04,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:48:04,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-10-16 17:48:04,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:48:04,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-10-16 17:48:04,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=556, Invalid=1700, Unknown=0, NotChecked=0, Total=2256 [2022-10-16 17:48:04,056 INFO L87 Difference]: Start difference. First operand 139 states and 153 transitions. Second operand has 48 states, 45 states have (on average 2.022222222222222) internal successors, (91), 26 states have internal predecessors, (91), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:48:05,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:48:05,164 INFO L93 Difference]: Finished difference Result 431 states and 464 transitions. [2022-10-16 17:48:05,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-10-16 17:48:05,165 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 45 states have (on average 2.022222222222222) internal successors, (91), 26 states have internal predecessors, (91), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-10-16 17:48:05,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:48:05,173 INFO L225 Difference]: With dead ends: 431 [2022-10-16 17:48:05,173 INFO L226 Difference]: Without dead ends: 371 [2022-10-16 17:48:05,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1269 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1742, Invalid=4578, Unknown=0, NotChecked=0, Total=6320 [2022-10-16 17:48:05,179 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 718 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 17:48:05,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 535 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-16 17:48:05,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2022-10-16 17:48:05,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 349. [2022-10-16 17:48:05,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 276 states have (on average 1.1268115942028984) internal successors, (311), 275 states have internal predecessors, (311), 24 states have call successors, (24), 23 states have call predecessors, (24), 47 states have return successors, (50), 50 states have call predecessors, (50), 23 states have call successors, (50) [2022-10-16 17:48:05,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 385 transitions. [2022-10-16 17:48:05,207 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 385 transitions. Word has length 57 [2022-10-16 17:48:05,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:48:05,207 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 385 transitions. [2022-10-16 17:48:05,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 45 states have (on average 2.022222222222222) internal successors, (91), 26 states have internal predecessors, (91), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:48:05,208 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 385 transitions. [2022-10-16 17:48:05,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-10-16 17:48:05,210 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:48:05,211 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2022-10-16 17:48:05,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-16 17:48:05,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:48:05,425 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-16 17:48:05,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:48:05,426 INFO L85 PathProgramCache]: Analyzing trace with hash 292034471, now seen corresponding path program 3 times [2022-10-16 17:48:05,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:48:05,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451553327] [2022-10-16 17:48:05,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:48:05,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:48:05,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:05,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-10-16 17:48:05,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:05,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:48:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:05,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:48:05,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:05,932 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 4 proven. 299 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 17:48:05,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:48:05,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451553327] [2022-10-16 17:48:05,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451553327] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:48:05,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805182054] [2022-10-16 17:48:05,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 17:48:05,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:48:05,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:48:05,937 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:48:05,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-16 17:48:05,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-10-16 17:48:05,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:48:05,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-16 17:48:06,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:48:06,123 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2022-10-16 17:48:06,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:48:06,396 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2022-10-16 17:48:06,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805182054] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:48:06,397 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:48:06,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 7, 7] total 38 [2022-10-16 17:48:06,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541332121] [2022-10-16 17:48:06,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:48:06,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-10-16 17:48:06,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:48:06,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-10-16 17:48:06,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1226, Unknown=0, NotChecked=0, Total=1406 [2022-10-16 17:48:06,400 INFO L87 Difference]: Start difference. First operand 349 states and 385 transitions. Second operand has 38 states, 37 states have (on average 2.27027027027027) internal successors, (84), 29 states have internal predecessors, (84), 12 states have call successors, (13), 10 states have call predecessors, (13), 9 states have return successors, (9), 9 states have call predecessors, (9), 3 states have call successors, (9) [2022-10-16 17:48:07,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:48:07,560 INFO L93 Difference]: Finished difference Result 702 states and 802 transitions. [2022-10-16 17:48:07,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-10-16 17:48:07,560 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.27027027027027) internal successors, (84), 29 states have internal predecessors, (84), 12 states have call successors, (13), 10 states have call predecessors, (13), 9 states have return successors, (9), 9 states have call predecessors, (9), 3 states have call successors, (9) Word has length 74 [2022-10-16 17:48:07,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:48:07,564 INFO L225 Difference]: With dead ends: 702 [2022-10-16 17:48:07,565 INFO L226 Difference]: Without dead ends: 647 [2022-10-16 17:48:07,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1173 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=742, Invalid=4660, Unknown=0, NotChecked=0, Total=5402 [2022-10-16 17:48:07,569 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 295 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 17:48:07,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 366 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-16 17:48:07,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2022-10-16 17:48:07,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 638. [2022-10-16 17:48:07,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 509 states have (on average 1.0667976424361494) internal successors, (543), 504 states have internal predecessors, (543), 24 states have call successors, (24), 23 states have call predecessors, (24), 103 states have return successors, (110), 110 states have call predecessors, (110), 23 states have call successors, (110) [2022-10-16 17:48:07,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 677 transitions. [2022-10-16 17:48:07,603 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 677 transitions. Word has length 74 [2022-10-16 17:48:07,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:48:07,603 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 677 transitions. [2022-10-16 17:48:07,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.27027027027027) internal successors, (84), 29 states have internal predecessors, (84), 12 states have call successors, (13), 10 states have call predecessors, (13), 9 states have return successors, (9), 9 states have call predecessors, (9), 3 states have call successors, (9) [2022-10-16 17:48:07,604 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 677 transitions. [2022-10-16 17:48:07,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-10-16 17:48:07,608 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:48:07,608 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1] [2022-10-16 17:48:07,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-16 17:48:07,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:48:07,823 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-16 17:48:07,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:48:07,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1383014436, now seen corresponding path program 4 times [2022-10-16 17:48:07,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:48:07,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343791911] [2022-10-16 17:48:07,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:48:07,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:48:07,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:08,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-16 17:48:08,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:08,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:48:08,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:08,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:48:08,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:08,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:48:08,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:08,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:48:08,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:08,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:48:08,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:08,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:48:08,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:08,616 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 12 proven. 360 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-10-16 17:48:08,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:48:08,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343791911] [2022-10-16 17:48:08,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343791911] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:48:08,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608810737] [2022-10-16 17:48:08,617 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 17:48:08,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:48:08,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:48:08,618 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:48:08,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-16 17:48:08,689 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 17:48:08,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:48:08,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 28 conjunts are in the unsatisfiable core [2022-10-16 17:48:08,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:48:08,864 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 12 proven. 354 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-10-16 17:48:08,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:48:10,821 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 12 proven. 420 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-16 17:48:10,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608810737] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:48:10,822 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:48:10,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 29] total 46 [2022-10-16 17:48:10,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997090922] [2022-10-16 17:48:10,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:48:10,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-10-16 17:48:10,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:48:10,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-10-16 17:48:10,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=393, Invalid=1677, Unknown=0, NotChecked=0, Total=2070 [2022-10-16 17:48:10,828 INFO L87 Difference]: Start difference. First operand 638 states and 677 transitions. Second operand has 46 states, 44 states have (on average 2.6363636363636362) internal successors, (116), 34 states have internal predecessors, (116), 22 states have call successors, (22), 13 states have call predecessors, (22), 8 states have return successors, (20), 7 states have call predecessors, (20), 10 states have call successors, (20) [2022-10-16 17:48:11,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:48:11,379 INFO L93 Difference]: Finished difference Result 741 states and 779 transitions. [2022-10-16 17:48:11,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-10-16 17:48:11,382 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 44 states have (on average 2.6363636363636362) internal successors, (116), 34 states have internal predecessors, (116), 22 states have call successors, (22), 13 states have call predecessors, (22), 8 states have return successors, (20), 7 states have call predecessors, (20), 10 states have call successors, (20) Word has length 99 [2022-10-16 17:48:11,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:48:11,390 INFO L225 Difference]: With dead ends: 741 [2022-10-16 17:48:11,390 INFO L226 Difference]: Without dead ends: 477 [2022-10-16 17:48:11,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 181 SyntacticMatches, 7 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1240 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=919, Invalid=3371, Unknown=0, NotChecked=0, Total=4290 [2022-10-16 17:48:11,405 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 355 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 17:48:11,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 737 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 17:48:11,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-10-16 17:48:11,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 435. [2022-10-16 17:48:11,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 348 states have (on average 1.0775862068965518) internal successors, (375), 343 states have internal predecessors, (375), 24 states have call successors, (24), 23 states have call predecessors, (24), 61 states have return successors, (68), 68 states have call predecessors, (68), 23 states have call successors, (68) [2022-10-16 17:48:11,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 467 transitions. [2022-10-16 17:48:11,440 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 467 transitions. Word has length 99 [2022-10-16 17:48:11,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:48:11,441 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 467 transitions. [2022-10-16 17:48:11,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 44 states have (on average 2.6363636363636362) internal successors, (116), 34 states have internal predecessors, (116), 22 states have call successors, (22), 13 states have call predecessors, (22), 8 states have return successors, (20), 7 states have call predecessors, (20), 10 states have call successors, (20) [2022-10-16 17:48:11,442 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 467 transitions. [2022-10-16 17:48:11,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-10-16 17:48:11,449 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:48:11,449 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1, 1, 1] [2022-10-16 17:48:11,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-16 17:48:11,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:48:11,663 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-16 17:48:11,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:48:11,664 INFO L85 PathProgramCache]: Analyzing trace with hash 848460513, now seen corresponding path program 4 times [2022-10-16 17:48:11,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:48:11,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684364511] [2022-10-16 17:48:11,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:48:11,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:48:11,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:13,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:48:13,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:48:13,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684364511] [2022-10-16 17:48:13,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684364511] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:48:13,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382705294] [2022-10-16 17:48:13,066 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 17:48:13,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:48:13,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:48:13,068 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:48:13,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-16 17:48:13,147 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 17:48:13,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:48:13,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 48 conjunts are in the unsatisfiable core [2022-10-16 17:48:13,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:48:13,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:48:13,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:48:15,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:48:15,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382705294] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:48:15,381 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:48:15,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2022-10-16 17:48:15,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374364312] [2022-10-16 17:48:15,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:48:15,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-10-16 17:48:15,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:48:15,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-10-16 17:48:15,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2260, Invalid=6860, Unknown=0, NotChecked=0, Total=9120 [2022-10-16 17:48:15,388 INFO L87 Difference]: Start difference. First operand 435 states and 467 transitions. Second operand has 96 states, 93 states have (on average 2.010752688172043) internal successors, (187), 50 states have internal predecessors, (187), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:48:19,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:48:19,205 INFO L93 Difference]: Finished difference Result 1499 states and 1570 transitions. [2022-10-16 17:48:19,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-10-16 17:48:19,206 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 93 states have (on average 2.010752688172043) internal successors, (187), 50 states have internal predecessors, (187), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2022-10-16 17:48:19,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:48:19,224 INFO L225 Difference]: With dead ends: 1499 [2022-10-16 17:48:19,224 INFO L226 Difference]: Without dead ends: 1301 [2022-10-16 17:48:19,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5823 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=7364, Invalid=19368, Unknown=0, NotChecked=0, Total=26732 [2022-10-16 17:48:19,234 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 2390 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 662 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2392 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 1568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 662 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-10-16 17:48:19,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2392 Valid, 1083 Invalid, 1568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [662 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-10-16 17:48:19,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1301 states. [2022-10-16 17:48:19,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1301 to 1255. [2022-10-16 17:48:19,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1255 states, 1000 states have (on average 1.071) internal successors, (1071), 995 states have internal predecessors, (1071), 48 states have call successors, (48), 47 states have call predecessors, (48), 205 states have return successors, (212), 212 states have call predecessors, (212), 47 states have call successors, (212) [2022-10-16 17:48:19,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1331 transitions. [2022-10-16 17:48:19,288 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1331 transitions. Word has length 117 [2022-10-16 17:48:19,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:48:19,288 INFO L495 AbstractCegarLoop]: Abstraction has 1255 states and 1331 transitions. [2022-10-16 17:48:19,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 93 states have (on average 2.010752688172043) internal successors, (187), 50 states have internal predecessors, (187), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:48:19,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1331 transitions. [2022-10-16 17:48:19,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-10-16 17:48:19,292 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:48:19,292 INFO L195 NwaCegarLoop]: trace histogram [24, 23, 23, 23, 23, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1] [2022-10-16 17:48:19,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-16 17:48:19,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-10-16 17:48:19,507 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-16 17:48:19,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:48:19,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1010666535, now seen corresponding path program 5 times [2022-10-16 17:48:19,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:48:19,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332946833] [2022-10-16 17:48:19,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:48:19,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:48:19,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:20,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-10-16 17:48:20,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:20,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:48:20,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:20,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:48:20,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:20,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:48:20,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:20,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:48:20,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:20,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:48:20,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:21,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:48:21,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:21,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 12 proven. 1317 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-10-16 17:48:21,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:48:21,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332946833] [2022-10-16 17:48:21,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332946833] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:48:21,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979525253] [2022-10-16 17:48:21,058 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-16 17:48:21,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:48:21,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:48:21,060 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:48:21,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-16 17:48:21,174 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2022-10-16 17:48:21,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:48:21,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 50 conjunts are in the unsatisfiable core [2022-10-16 17:48:21,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:48:21,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 12 proven. 1311 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-10-16 17:48:21,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:48:23,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 12 proven. 1377 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-16 17:48:23,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979525253] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:48:23,937 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:48:23,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 45, 51] total 58 [2022-10-16 17:48:23,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977460012] [2022-10-16 17:48:23,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:48:23,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-10-16 17:48:23,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:48:23,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-10-16 17:48:23,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=633, Invalid=2673, Unknown=0, NotChecked=0, Total=3306 [2022-10-16 17:48:23,941 INFO L87 Difference]: Start difference. First operand 1255 states and 1331 transitions. Second operand has 58 states, 56 states have (on average 2.5) internal successors, (140), 40 states have internal predecessors, (140), 28 states have call successors, (29), 19 states have call predecessors, (29), 8 states have return successors, (20), 7 states have call predecessors, (20), 10 states have call successors, (20) [2022-10-16 17:48:24,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:48:24,856 INFO L93 Difference]: Finished difference Result 1448 states and 1523 transitions. [2022-10-16 17:48:24,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-10-16 17:48:24,858 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 56 states have (on average 2.5) internal successors, (140), 40 states have internal predecessors, (140), 28 states have call successors, (29), 19 states have call predecessors, (29), 8 states have return successors, (20), 7 states have call predecessors, (20), 10 states have call successors, (20) Word has length 154 [2022-10-16 17:48:24,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:48:24,868 INFO L225 Difference]: With dead ends: 1448 [2022-10-16 17:48:24,868 INFO L226 Difference]: Without dead ends: 1299 [2022-10-16 17:48:24,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 269 SyntacticMatches, 39 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2769 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1504, Invalid=5468, Unknown=0, NotChecked=0, Total=6972 [2022-10-16 17:48:24,872 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 476 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 17:48:24,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 1018 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 17:48:24,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1299 states. [2022-10-16 17:48:24,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1299 to 1197. [2022-10-16 17:48:24,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 954 states have (on average 1.0723270440251573) internal successors, (1023), 949 states have internal predecessors, (1023), 48 states have call successors, (48), 47 states have call predecessors, (48), 193 states have return successors, (200), 200 states have call predecessors, (200), 47 states have call successors, (200) [2022-10-16 17:48:24,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1271 transitions. [2022-10-16 17:48:24,939 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1271 transitions. Word has length 154 [2022-10-16 17:48:24,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:48:24,940 INFO L495 AbstractCegarLoop]: Abstraction has 1197 states and 1271 transitions. [2022-10-16 17:48:24,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 56 states have (on average 2.5) internal successors, (140), 40 states have internal predecessors, (140), 28 states have call successors, (29), 19 states have call predecessors, (29), 8 states have return successors, (20), 7 states have call predecessors, (20), 10 states have call successors, (20) [2022-10-16 17:48:24,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1271 transitions. [2022-10-16 17:48:24,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-10-16 17:48:24,945 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:48:24,945 INFO L195 NwaCegarLoop]: trace histogram [26, 25, 25, 25, 25, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1] [2022-10-16 17:48:24,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-16 17:48:25,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-10-16 17:48:25,160 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-16 17:48:25,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:48:25,161 INFO L85 PathProgramCache]: Analyzing trace with hash -28407225, now seen corresponding path program 6 times [2022-10-16 17:48:25,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:48:25,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466556778] [2022-10-16 17:48:25,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:48:25,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:48:25,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:25,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-10-16 17:48:25,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:25,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:48:25,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:25,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:48:25,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:25,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:48:25,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:25,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:48:25,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:25,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:48:25,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:25,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:48:25,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:25,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1649 backedges. 25 proven. 99 refuted. 0 times theorem prover too weak. 1525 trivial. 0 not checked. [2022-10-16 17:48:25,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:48:25,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466556778] [2022-10-16 17:48:25,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466556778] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:48:25,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464357470] [2022-10-16 17:48:25,756 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-10-16 17:48:25,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:48:25,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:48:25,761 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:48:25,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-16 17:48:25,861 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2022-10-16 17:48:25,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:48:25,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 15 conjunts are in the unsatisfiable core [2022-10-16 17:48:25,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:48:25,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1649 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1550 trivial. 0 not checked. [2022-10-16 17:48:25,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:48:27,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1649 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 1550 trivial. 0 not checked. [2022-10-16 17:48:27,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464357470] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:48:27,056 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:48:27,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 32 [2022-10-16 17:48:27,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30892819] [2022-10-16 17:48:27,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:48:27,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-10-16 17:48:27,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:48:27,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-10-16 17:48:27,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=783, Unknown=0, NotChecked=0, Total=1056 [2022-10-16 17:48:27,059 INFO L87 Difference]: Start difference. First operand 1197 states and 1271 transitions. Second operand has 33 states, 32 states have (on average 2.125) internal successors, (68), 33 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) [2022-10-16 17:48:27,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:48:27,429 INFO L93 Difference]: Finished difference Result 2474 states and 2815 transitions. [2022-10-16 17:48:27,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-10-16 17:48:27,430 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.125) internal successors, (68), 33 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) Word has length 164 [2022-10-16 17:48:27,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:48:27,442 INFO L225 Difference]: With dead ends: 2474 [2022-10-16 17:48:27,443 INFO L226 Difference]: Without dead ends: 2473 [2022-10-16 17:48:27,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1365 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=751, Invalid=2909, Unknown=0, NotChecked=0, Total=3660 [2022-10-16 17:48:27,446 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 72 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:48:27,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 53 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:48:27,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2473 states. [2022-10-16 17:48:27,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2473 to 2473. [2022-10-16 17:48:27,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2473 states, 1978 states have (on average 1.0348837209302326) internal successors, (2047), 1965 states have internal predecessors, (2047), 48 states have call successors, (48), 47 states have call predecessors, (48), 445 states have return successors, (460), 460 states have call predecessors, (460), 47 states have call successors, (460) [2022-10-16 17:48:27,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2473 states to 2473 states and 2555 transitions. [2022-10-16 17:48:27,541 INFO L78 Accepts]: Start accepts. Automaton has 2473 states and 2555 transitions. Word has length 164 [2022-10-16 17:48:27,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:48:27,542 INFO L495 AbstractCegarLoop]: Abstraction has 2473 states and 2555 transitions. [2022-10-16 17:48:27,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.125) internal successors, (68), 33 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) [2022-10-16 17:48:27,542 INFO L276 IsEmpty]: Start isEmpty. Operand 2473 states and 2555 transitions. [2022-10-16 17:48:27,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-10-16 17:48:27,548 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:48:27,549 INFO L195 NwaCegarLoop]: trace histogram [26, 25, 25, 25, 25, 15, 15, 15, 14, 14, 1, 1, 1, 1, 1] [2022-10-16 17:48:27,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-16 17:48:27,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-10-16 17:48:27,763 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-16 17:48:27,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:48:27,763 INFO L85 PathProgramCache]: Analyzing trace with hash 688421319, now seen corresponding path program 7 times [2022-10-16 17:48:27,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:48:27,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865463996] [2022-10-16 17:48:27,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:48:27,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:48:27,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:28,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-10-16 17:48:28,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:28,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:48:28,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:28,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:48:28,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:28,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:48:28,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:29,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:48:29,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:29,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:48:29,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:29,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:48:29,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:29,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:48:29,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:29,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:48:29,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:29,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:48:29,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:29,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:48:29,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:29,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:48:29,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:29,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:48:29,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:29,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:48:29,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:30,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:48:30,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:30,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2061 backedges. 25 proven. 511 refuted. 0 times theorem prover too weak. 1525 trivial. 0 not checked. [2022-10-16 17:48:30,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:48:30,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865463996] [2022-10-16 17:48:30,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865463996] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:48:30,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208095160] [2022-10-16 17:48:30,060 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-10-16 17:48:30,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:48:30,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:48:30,061 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:48:30,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-16 17:48:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:30,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 31 conjunts are in the unsatisfiable core [2022-10-16 17:48:30,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:48:30,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2061 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 1550 trivial. 0 not checked. [2022-10-16 17:48:30,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:48:41,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2061 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 1550 trivial. 0 not checked. [2022-10-16 17:48:41,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208095160] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:48:41,720 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:48:41,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31, 31] total 64 [2022-10-16 17:48:41,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125461030] [2022-10-16 17:48:41,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:48:41,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-10-16 17:48:41,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:48:41,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-10-16 17:48:41,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1057, Invalid=3103, Unknown=0, NotChecked=0, Total=4160 [2022-10-16 17:48:41,723 INFO L87 Difference]: Start difference. First operand 2473 states and 2555 transitions. Second operand has 65 states, 64 states have (on average 2.0625) internal successors, (132), 65 states have internal predecessors, (132), 1 states have call successors, (2), 1 states have call predecessors, (2), 31 states have return successors, (31), 31 states have call predecessors, (31), 1 states have call successors, (31) [2022-10-16 17:48:42,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:48:42,695 INFO L93 Difference]: Finished difference Result 5911 states and 6699 transitions. [2022-10-16 17:48:42,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-10-16 17:48:42,695 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 64 states have (on average 2.0625) internal successors, (132), 65 states have internal predecessors, (132), 1 states have call successors, (2), 1 states have call predecessors, (2), 31 states have return successors, (31), 31 states have call predecessors, (31), 1 states have call successors, (31) Word has length 204 [2022-10-16 17:48:42,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:48:42,719 INFO L225 Difference]: With dead ends: 5911 [2022-10-16 17:48:42,719 INFO L226 Difference]: Without dead ends: 5091 [2022-10-16 17:48:42,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6405 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3039, Invalid=12461, Unknown=0, NotChecked=0, Total=15500 [2022-10-16 17:48:42,728 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 144 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 17:48:42,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 65 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 17:48:42,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5091 states. [2022-10-16 17:48:42,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5091 to 5091. [2022-10-16 17:48:42,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5091 states, 4080 states have (on average 1.0154411764705882) internal successors, (4143), 4051 states have internal predecessors, (4143), 48 states have call successors, (48), 47 states have call predecessors, (48), 961 states have return successors, (992), 992 states have call predecessors, (992), 47 states have call successors, (992) [2022-10-16 17:48:42,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5091 states to 5091 states and 5183 transitions. [2022-10-16 17:48:42,928 INFO L78 Accepts]: Start accepts. Automaton has 5091 states and 5183 transitions. Word has length 204 [2022-10-16 17:48:42,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:48:42,930 INFO L495 AbstractCegarLoop]: Abstraction has 5091 states and 5183 transitions. [2022-10-16 17:48:42,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 64 states have (on average 2.0625) internal successors, (132), 65 states have internal predecessors, (132), 1 states have call successors, (2), 1 states have call predecessors, (2), 31 states have return successors, (31), 31 states have call predecessors, (31), 1 states have call successors, (31) [2022-10-16 17:48:42,931 INFO L276 IsEmpty]: Start isEmpty. Operand 5091 states and 5183 transitions. [2022-10-16 17:48:42,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-10-16 17:48:42,938 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:48:42,939 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 46, 46, 1, 1, 1, 1] [2022-10-16 17:48:42,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-16 17:48:43,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-10-16 17:48:43,153 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-16 17:48:43,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:48:43,156 INFO L85 PathProgramCache]: Analyzing trace with hash -357109407, now seen corresponding path program 5 times [2022-10-16 17:48:43,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:48:43,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668593950] [2022-10-16 17:48:43,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:48:43,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:48:43,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:48:48,428 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:48:48,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:48:48,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668593950] [2022-10-16 17:48:48,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668593950] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:48:48,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358368927] [2022-10-16 17:48:48,429 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-16 17:48:48,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:48:48,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:48:48,430 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:48:48,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-10-16 17:48:48,798 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2022-10-16 17:48:48,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:48:48,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 96 conjunts are in the unsatisfiable core [2022-10-16 17:48:48,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:48:49,137 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:48:49,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:48:57,822 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 17:48:57,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358368927] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:48:57,823 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:48:57,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2022-10-16 17:48:57,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117998180] [2022-10-16 17:48:57,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:48:57,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-10-16 17:48:57,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:48:57,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-10-16 17:48:57,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9124, Invalid=27548, Unknown=0, NotChecked=0, Total=36672 [2022-10-16 17:48:57,833 INFO L87 Difference]: Start difference. First operand 5091 states and 5183 transitions. Second operand has 192 states, 189 states have (on average 2.005291005291005) internal successors, (379), 98 states have internal predecessors, (379), 94 states have call successors, (94), 94 states have call predecessors, (94), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:48:59,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:48:59,788 INFO L93 Difference]: Finished difference Result 5116 states and 5183 transitions. [2022-10-16 17:48:59,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-10-16 17:48:59,789 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 189 states have (on average 2.005291005291005) internal successors, (379), 98 states have internal predecessors, (379), 94 states have call successors, (94), 94 states have call predecessors, (94), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 237 [2022-10-16 17:48:59,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:48:59,812 INFO L225 Difference]: With dead ends: 5116 [2022-10-16 17:48:59,812 INFO L226 Difference]: Without dead ends: 5115 [2022-10-16 17:48:59,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11393 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=13906, Invalid=33836, Unknown=0, NotChecked=0, Total=47742 [2022-10-16 17:48:59,820 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 1064 mSDsluCounter, 978 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1064 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 17:48:59,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1064 Valid, 1085 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-16 17:48:59,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5115 states. [2022-10-16 17:48:59,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5115 to 5090. [2022-10-16 17:48:59,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5090 states, 4080 states have (on average 1.0151960784313725) internal successors, (4142), 4050 states have internal predecessors, (4142), 48 states have call successors, (48), 47 states have call predecessors, (48), 961 states have return successors, (992), 992 states have call predecessors, (992), 47 states have call successors, (992) [2022-10-16 17:48:59,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5090 states to 5090 states and 5182 transitions. [2022-10-16 17:48:59,971 INFO L78 Accepts]: Start accepts. Automaton has 5090 states and 5182 transitions. Word has length 237 [2022-10-16 17:48:59,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:48:59,972 INFO L495 AbstractCegarLoop]: Abstraction has 5090 states and 5182 transitions. [2022-10-16 17:48:59,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 189 states have (on average 2.005291005291005) internal successors, (379), 98 states have internal predecessors, (379), 94 states have call successors, (94), 94 states have call predecessors, (94), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:48:59,973 INFO L276 IsEmpty]: Start isEmpty. Operand 5090 states and 5182 transitions. [2022-10-16 17:48:59,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2022-10-16 17:48:59,986 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:48:59,986 INFO L195 NwaCegarLoop]: trace histogram [32, 31, 31, 31, 31, 31, 31, 31, 30, 30, 1, 1, 1, 1, 1] [2022-10-16 17:49:00,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-10-16 17:49:00,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-10-16 17:49:00,201 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-16 17:49:00,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:49:00,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1504068391, now seen corresponding path program 8 times [2022-10-16 17:49:00,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:49:00,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916569158] [2022-10-16 17:49:00,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:49:00,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:49:00,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:01,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 17:49:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:02,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:49:02,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:03,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:49:03,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:04,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:49:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:04,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:49:05,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:05,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:49:05,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:06,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:49:06,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:06,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:49:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:07,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:49:07,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:08,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:49:08,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:08,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:49:08,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:08,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:49:08,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:09,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:49:09,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:09,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:49:09,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:10,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:49:10,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:10,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:49:10,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:10,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:49:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:10,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:49:10,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:11,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:49:11,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:11,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:49:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:11,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:49:11,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:11,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:49:11,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:11,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:49:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:12,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:49:12,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:12,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:49:12,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:12,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:49:12,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:12,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:49:12,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:12,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:49:12,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:12,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:49:12,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:12,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:49:12,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:12,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 17:49:12,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:49:12,849 INFO L134 CoverageAnalysis]: Checked inductivity of 4682 backedges. 31 proven. 2295 refuted. 0 times theorem prover too weak. 2356 trivial. 0 not checked. [2022-10-16 17:49:12,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:49:12,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916569158] [2022-10-16 17:49:12,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916569158] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 17:49:12,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313459152] [2022-10-16 17:49:12,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 17:49:12,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 17:49:12,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:49:12,851 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 17:49:12,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-10-16 17:49:13,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 17:49:13,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 17:49:13,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 592 conjuncts, 66 conjunts are in the unsatisfiable core [2022-10-16 17:49:13,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 17:49:15,015 INFO L134 CoverageAnalysis]: Checked inductivity of 4682 backedges. 2295 proven. 152 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2022-10-16 17:49:15,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 17:51:25,747 INFO L134 CoverageAnalysis]: Checked inductivity of 4682 backedges. 2295 proven. 1922 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-10-16 17:51:25,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313459152] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 17:51:25,748 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 17:51:25,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 37, 67] total 134 [2022-10-16 17:51:25,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038885673] [2022-10-16 17:51:25,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 17:51:25,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2022-10-16 17:51:25,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:51:25,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2022-10-16 17:51:25,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2231, Invalid=15591, Unknown=0, NotChecked=0, Total=17822 [2022-10-16 17:51:25,753 INFO L87 Difference]: Start difference. First operand 5090 states and 5182 transitions. Second operand has 134 states, 132 states have (on average 2.962121212121212) internal successors, (391), 132 states have internal predecessors, (391), 36 states have call successors, (37), 3 states have call predecessors, (37), 62 states have return successors, (93), 62 states have call predecessors, (93), 34 states have call successors, (93) [2022-10-16 17:51:27,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:51:27,618 INFO L93 Difference]: Finished difference Result 5090 states and 5182 transitions. [2022-10-16 17:51:27,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-10-16 17:51:27,619 INFO L78 Accepts]: Start accepts. Automaton has has 134 states, 132 states have (on average 2.962121212121212) internal successors, (391), 132 states have internal predecessors, (391), 36 states have call successors, (37), 3 states have call predecessors, (37), 62 states have return successors, (93), 62 states have call predecessors, (93), 34 states have call successors, (93) Word has length 314 [2022-10-16 17:51:27,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:51:27,620 INFO L225 Difference]: With dead ends: 5090 [2022-10-16 17:51:27,620 INFO L226 Difference]: Without dead ends: 0 [2022-10-16 17:51:27,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 803 GetRequests, 588 SyntacticMatches, 31 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14178 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=5967, Invalid=28443, Unknown=0, NotChecked=0, Total=34410 [2022-10-16 17:51:27,634 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 1699 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 1543 mSolverCounterSat, 1104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1699 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 2647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1104 IncrementalHoareTripleChecker+Valid, 1543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-16 17:51:27,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1699 Valid, 407 Invalid, 2647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1104 Valid, 1543 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-10-16 17:51:27,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-10-16 17:51:27,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-10-16 17:51:27,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-10-16 17:51:27,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-10-16 17:51:27,635 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 314 [2022-10-16 17:51:27,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:51:27,636 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-10-16 17:51:27,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 132 states have (on average 2.962121212121212) internal successors, (391), 132 states have internal predecessors, (391), 36 states have call successors, (37), 3 states have call predecessors, (37), 62 states have return successors, (93), 62 states have call predecessors, (93), 34 states have call successors, (93) [2022-10-16 17:51:27,636 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-10-16 17:51:27,637 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-10-16 17:51:27,640 INFO L805 garLoopResultBuilder]: Registering result SAFE for location idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-10-16 17:51:27,641 INFO L805 garLoopResultBuilder]: Registering result SAFE for location idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-10-16 17:51:27,641 INFO L805 garLoopResultBuilder]: Registering result SAFE for location idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2022-10-16 17:51:27,641 INFO L805 garLoopResultBuilder]: Registering result SAFE for location idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2022-10-16 17:51:27,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-10-16 17:51:27,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-10-16 17:51:27,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-10-16 17:51:28,387 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-10-16 17:51:28,388 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-10-16 17:51:28,388 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-10-16 17:51:28,388 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-10-16 17:51:28,388 INFO L899 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2022-10-16 17:51:28,388 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 16) no Hoare annotation was computed. [2022-10-16 17:51:28,388 INFO L895 garLoopResultBuilder]: At program point L13(line 13) the Hoare annotation is: (and (<= 25 |ULTIMATE.start_main_~input~0#1|) (<= |ULTIMATE.start_main_~input~0#1| 25)) [2022-10-16 17:51:28,388 INFO L899 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2022-10-16 17:51:28,389 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 17) no Hoare annotation was computed. [2022-10-16 17:51:28,389 INFO L899 garLoopResultBuilder]: For program point idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 8) no Hoare annotation was computed. [2022-10-16 17:51:28,389 INFO L899 garLoopResultBuilder]: For program point idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 8) no Hoare annotation was computed. [2022-10-16 17:51:28,389 INFO L899 garLoopResultBuilder]: For program point idFINAL(lines 6 9) no Hoare annotation was computed. [2022-10-16 17:51:28,389 INFO L899 garLoopResultBuilder]: For program point idEXIT(lines 6 9) no Hoare annotation was computed. [2022-10-16 17:51:28,389 INFO L902 garLoopResultBuilder]: At program point idENTRY(lines 6 9) the Hoare annotation is: true [2022-10-16 17:51:28,389 INFO L899 garLoopResultBuilder]: For program point idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 8) no Hoare annotation was computed. [2022-10-16 17:51:28,389 INFO L899 garLoopResultBuilder]: For program point idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 8) no Hoare annotation was computed. [2022-10-16 17:51:28,389 INFO L899 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2022-10-16 17:51:28,389 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2022-10-16 17:51:28,390 INFO L899 garLoopResultBuilder]: For program point L8-1(line 8) no Hoare annotation was computed. [2022-10-16 17:51:28,390 INFO L895 garLoopResultBuilder]: At program point L8-2(line 8) the Hoare annotation is: (or (and (= |id_#in~x| id_~x) (<= 1 id_~x)) (not (<= |id_#in~x| 25)) (not (<= 0 |id_#in~x|))) [2022-10-16 17:51:28,390 INFO L899 garLoopResultBuilder]: For program point L8-3(line 8) no Hoare annotation was computed. [2022-10-16 17:51:28,390 INFO L899 garLoopResultBuilder]: For program point L8-4(line 8) no Hoare annotation was computed. [2022-10-16 17:51:28,390 INFO L899 garLoopResultBuilder]: For program point L8-5(line 8) no Hoare annotation was computed. [2022-10-16 17:51:28,393 INFO L444 BasicCegarLoop]: Path program histogram: [8, 5, 1, 1, 1, 1] [2022-10-16 17:51:28,396 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-16 17:51:28,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 05:51:28 BoogieIcfgContainer [2022-10-16 17:51:28,399 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-16 17:51:28,400 INFO L158 Benchmark]: Toolchain (without parser) took 212471.04ms. Allocated memory was 166.7MB in the beginning and 958.4MB in the end (delta: 791.7MB). Free memory was 141.3MB in the beginning and 762.8MB in the end (delta: -621.5MB). Peak memory consumption was 170.8MB. Max. memory is 8.0GB. [2022-10-16 17:51:28,400 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 166.7MB. Free memory was 137.7MB in the beginning and 137.7MB in the end (delta: 72.3kB). There was no memory consumed. Max. memory is 8.0GB. [2022-10-16 17:51:28,401 INFO L158 Benchmark]: CACSL2BoogieTranslator took 245.12ms. Allocated memory is still 166.7MB. Free memory was 141.1MB in the beginning and 131.9MB in the end (delta: 9.2MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-10-16 17:51:28,401 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.28ms. Allocated memory is still 166.7MB. Free memory was 131.7MB in the beginning and 130.4MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-10-16 17:51:28,401 INFO L158 Benchmark]: Boogie Preprocessor took 33.07ms. Allocated memory is still 166.7MB. Free memory was 130.4MB in the beginning and 129.5MB in the end (delta: 911.9kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-10-16 17:51:28,402 INFO L158 Benchmark]: RCFGBuilder took 487.17ms. Allocated memory is still 166.7MB. Free memory was 129.5MB in the beginning and 120.1MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-10-16 17:51:28,402 INFO L158 Benchmark]: TraceAbstraction took 211644.15ms. Allocated memory was 166.7MB in the beginning and 958.4MB in the end (delta: 791.7MB). Free memory was 119.5MB in the beginning and 762.8MB in the end (delta: -643.3MB). Peak memory consumption was 148.8MB. Max. memory is 8.0GB. [2022-10-16 17:51:28,404 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 166.7MB. Free memory was 137.7MB in the beginning and 137.7MB in the end (delta: 72.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 245.12ms. Allocated memory is still 166.7MB. Free memory was 141.1MB in the beginning and 131.9MB in the end (delta: 9.2MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 41.28ms. Allocated memory is still 166.7MB. Free memory was 131.7MB in the beginning and 130.4MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.07ms. Allocated memory is still 166.7MB. Free memory was 130.4MB in the beginning and 129.5MB in the end (delta: 911.9kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 487.17ms. Allocated memory is still 166.7MB. Free memory was 129.5MB in the beginning and 120.1MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 211644.15ms. Allocated memory was 166.7MB in the beginning and 958.4MB in the end (delta: 791.7MB). Free memory was 119.5MB in the beginning and 762.8MB in the end (delta: -643.3MB). Peak memory consumption was 148.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 8]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 8]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 8]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 8]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 211.5s, OverallIterations: 17, TraceHistogramMax: 47, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.1s, AutomataDifference: 14.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8046 SdHoareTripleChecker+Valid, 4.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7961 mSDsluCounter, 6195 SdHoareTripleChecker+Invalid, 3.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5529 mSDsCounter, 2881 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5796 IncrementalHoareTripleChecker+Invalid, 8677 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2881 mSolverCounterUnsat, 666 mSDtfsCounter, 5796 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3999 GetRequests, 2755 SyntacticMatches, 82 SemanticMatches, 1162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46257 ImplicationChecksByTransitivity, 31.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5091occurred in iteration=15, InterpolantAutomatonStates: 612, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 17 MinimizatonAttempts, 305 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 97 PreInvPairs, 97 NumberOfFragments, 24 HoareAnnotationTreeSize, 97 FomulaSimplifications, 886 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 2444 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 190.5s InterpolantComputationTime, 3126 NumberOfCodeBlocks, 3016 NumberOfCodeBlocksAsserted, 128 NumberOfCheckSat, 4610 ConstructedInterpolants, 0 QuantifiedInterpolants, 13341 SizeOfPredicates, 166 NumberOfNonLiveVariables, 2882 ConjunctsInSsa, 405 ConjunctsInUnsatCore, 43 InterpolantComputations, 4 PerfectInterpolantSequences, 20153/52778 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-10-16 17:51:28,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...