/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/array-memsafety/array02-alloca-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 11:06:57,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 11:06:57,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 11:06:57,874 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-10-16 11:06:57,885 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 11:06:57,886 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 11:06:57,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 11:06:57,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 11:06:57,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 11:06:57,891 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 11:06:57,892 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 11:06:57,895 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 11:06:57,896 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 11:06:57,897 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 11:06:57,899 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 11:06:57,900 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 11:06:57,904 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-16 11:06:57,912 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 11:06:57,913 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 11:06:57,914 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 11:06:57,917 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 11:06:57,944 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 11:06:57,944 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 11:06:57,944 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 11:06:57,945 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 11:06:57,946 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 11:06:57,946 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 11:06:57,947 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 11:06:57,951 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 11:06:57,951 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 11:06:57,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 11:06:57,951 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 11:06:57,952 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 11:06:57,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 11:06:57,952 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 11:06:57,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 11:06:57,952 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 11:06:57,955 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 11:06:57,955 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 11:06:57,955 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 11:06:57,955 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 11:06:57,955 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 11:06:57,955 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 11:06:57,956 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 11:06:57,956 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 11:06:57,956 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 11:06:57,956 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 11:06:57,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 11:06:57,956 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 11:06:57,957 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 11:06:57,957 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 11:06:57,957 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 11:06:57,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 11:06:57,957 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 11:06:57,957 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 11:06:58,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 11:06:58,356 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 11:06:58,359 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 11:06:58,361 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 11:06:58,361 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 11:06:58,363 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/array02-alloca-2.i [2022-10-16 11:06:58,436 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99835fb5d/f7ce6ee791f24e438835370961be9677/FLAG63d659ba8 [2022-10-16 11:06:59,152 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 11:06:59,153 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/array02-alloca-2.i [2022-10-16 11:06:59,174 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99835fb5d/f7ce6ee791f24e438835370961be9677/FLAG63d659ba8 [2022-10-16 11:06:59,457 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99835fb5d/f7ce6ee791f24e438835370961be9677 [2022-10-16 11:06:59,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 11:06:59,467 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 11:06:59,470 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 11:06:59,471 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 11:06:59,475 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 11:06:59,476 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:06:59" (1/1) ... [2022-10-16 11:06:59,477 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31d526f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:06:59, skipping insertion in model container [2022-10-16 11:06:59,477 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:06:59" (1/1) ... [2022-10-16 11:06:59,485 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 11:06:59,521 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 11:06:59,935 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 11:06:59,943 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 11:07:00,003 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 11:07:00,043 INFO L208 MainTranslator]: Completed translation [2022-10-16 11:07:00,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:07:00 WrapperNode [2022-10-16 11:07:00,046 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 11:07:00,047 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 11:07:00,048 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 11:07:00,048 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 11:07:00,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:07:00" (1/1) ... [2022-10-16 11:07:00,089 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:07:00" (1/1) ... [2022-10-16 11:07:00,132 INFO L138 Inliner]: procedures = 116, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 81 [2022-10-16 11:07:00,132 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 11:07:00,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 11:07:00,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 11:07:00,134 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 11:07:00,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:07:00" (1/1) ... [2022-10-16 11:07:00,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:07:00" (1/1) ... [2022-10-16 11:07:00,163 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:07:00" (1/1) ... [2022-10-16 11:07:00,164 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:07:00" (1/1) ... [2022-10-16 11:07:00,177 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:07:00" (1/1) ... [2022-10-16 11:07:00,188 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:07:00" (1/1) ... [2022-10-16 11:07:00,190 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:07:00" (1/1) ... [2022-10-16 11:07:00,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:07:00" (1/1) ... [2022-10-16 11:07:00,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 11:07:00,203 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 11:07:00,203 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 11:07:00,203 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 11:07:00,204 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:07:00" (1/1) ... [2022-10-16 11:07:00,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 11:07:00,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:07:00,247 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 11:07:00,272 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 11:07:00,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 11:07:00,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 11:07:00,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 11:07:00,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 11:07:00,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 11:07:00,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 11:07:00,537 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 11:07:00,539 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 11:07:00,762 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 11:07:00,770 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 11:07:00,770 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-10-16 11:07:00,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:07:00 BoogieIcfgContainer [2022-10-16 11:07:00,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 11:07:00,775 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 11:07:00,775 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 11:07:00,779 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 11:07:00,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:06:59" (1/3) ... [2022-10-16 11:07:00,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66bfedc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:07:00, skipping insertion in model container [2022-10-16 11:07:00,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:07:00" (2/3) ... [2022-10-16 11:07:00,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66bfedc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:07:00, skipping insertion in model container [2022-10-16 11:07:00,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:07:00" (3/3) ... [2022-10-16 11:07:00,782 INFO L112 eAbstractionObserver]: Analyzing ICFG array02-alloca-2.i [2022-10-16 11:07:00,808 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 11:07:00,808 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-10-16 11:07:00,887 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 11:07:00,901 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;@2cf13628, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 11:07:00,901 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-10-16 11:07:00,909 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 28 states have (on average 1.75) internal successors, (49), 40 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:07:00,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-16 11:07:00,917 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:00,917 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:00,918 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:07:00,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:00,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1804971307, now seen corresponding path program 1 times [2022-10-16 11:07:00,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:00,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940908669] [2022-10-16 11:07:00,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:00,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:01,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:01,269 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 11:07:01,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:01,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940908669] [2022-10-16 11:07:01,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940908669] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:07:01,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:07:01,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:07:01,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894275957] [2022-10-16 11:07:01,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:07:01,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:07:01,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:01,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:07:01,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:07:01,311 INFO L87 Difference]: Start difference. First operand has 41 states, 28 states have (on average 1.75) internal successors, (49), 40 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 11:07:01,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:01,384 INFO L93 Difference]: Finished difference Result 109 states and 129 transitions. [2022-10-16 11:07:01,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:07:01,388 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-10-16 11:07:01,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:01,399 INFO L225 Difference]: With dead ends: 109 [2022-10-16 11:07:01,400 INFO L226 Difference]: Without dead ends: 68 [2022-10-16 11:07:01,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 11:07:01,412 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 37 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:01,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 116 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:07:01,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-10-16 11:07:01,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 41. [2022-10-16 11:07:01,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 40 states have internal predecessors, (46), 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 11:07:01,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2022-10-16 11:07:01,453 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 7 [2022-10-16 11:07:01,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:01,453 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2022-10-16 11:07:01,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 11:07:01,454 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2022-10-16 11:07:01,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-16 11:07:01,455 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:01,455 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:01,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 11:07:01,456 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:07:01,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:01,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1139722471, now seen corresponding path program 1 times [2022-10-16 11:07:01,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:01,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141030199] [2022-10-16 11:07:01,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:01,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:01,549 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 11:07:01,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:01,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141030199] [2022-10-16 11:07:01,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141030199] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:07:01,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:07:01,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 11:07:01,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004155208] [2022-10-16 11:07:01,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:07:01,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:07:01,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:01,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:07:01,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:07:01,557 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 11:07:01,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:01,587 INFO L93 Difference]: Finished difference Result 68 states and 75 transitions. [2022-10-16 11:07:01,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:07:01,588 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-10-16 11:07:01,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:01,589 INFO L225 Difference]: With dead ends: 68 [2022-10-16 11:07:01,589 INFO L226 Difference]: Without dead ends: 41 [2022-10-16 11:07:01,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:07:01,592 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 44 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:01,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 68 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:07:01,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-10-16 11:07:01,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-10-16 11:07:01,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 29 states have (on average 1.5517241379310345) internal successors, (45), 40 states have internal predecessors, (45), 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 11:07:01,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2022-10-16 11:07:01,601 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 10 [2022-10-16 11:07:01,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:01,601 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2022-10-16 11:07:01,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 11:07:01,602 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2022-10-16 11:07:01,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-16 11:07:01,602 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:01,603 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:01,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 11:07:01,603 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:07:01,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:01,604 INFO L85 PathProgramCache]: Analyzing trace with hash 560852455, now seen corresponding path program 1 times [2022-10-16 11:07:01,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:01,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576637376] [2022-10-16 11:07:01,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:01,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:01,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:01,795 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:01,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:01,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576637376] [2022-10-16 11:07:01,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576637376] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:07:01,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916539755] [2022-10-16 11:07:01,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:01,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:01,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:07:01,800 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 11:07:01,825 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 11:07:01,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:01,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 11:07:01,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:07:01,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:01,993 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:07:01,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916539755] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:07:01,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:07:01,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2022-10-16 11:07:01,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592842831] [2022-10-16 11:07:01,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:07:01,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 11:07:01,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:01,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 11:07:01,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-10-16 11:07:01,997 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:07:02,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:02,058 INFO L93 Difference]: Finished difference Result 107 states and 117 transitions. [2022-10-16 11:07:02,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 11:07:02,059 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-10-16 11:07:02,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:02,064 INFO L225 Difference]: With dead ends: 107 [2022-10-16 11:07:02,064 INFO L226 Difference]: Without dead ends: 74 [2022-10-16 11:07:02,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-10-16 11:07:02,069 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 64 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:02,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 128 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:07:02,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-10-16 11:07:02,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 47. [2022-10-16 11:07:02,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 35 states have (on average 1.457142857142857) internal successors, (51), 46 states have internal predecessors, (51), 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 11:07:02,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2022-10-16 11:07:02,089 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 11 [2022-10-16 11:07:02,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:02,092 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2022-10-16 11:07:02,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:07:02,093 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2022-10-16 11:07:02,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-16 11:07:02,093 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:02,094 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:02,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-10-16 11:07:02,294 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 11:07:02,296 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:07:02,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:02,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1240910825, now seen corresponding path program 1 times [2022-10-16 11:07:02,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:02,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423937536] [2022-10-16 11:07:02,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:02,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:02,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:02,530 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:02,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:02,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423937536] [2022-10-16 11:07:02,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423937536] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:07:02,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921965944] [2022-10-16 11:07:02,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:02,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:02,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:07:02,533 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 11:07:02,559 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 11:07:02,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:02,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 11:07:02,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:07:02,636 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:02,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:07:02,690 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:02,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921965944] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:07:02,691 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:07:02,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-10-16 11:07:02,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61205966] [2022-10-16 11:07:02,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:07:02,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-16 11:07:02,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:02,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-16 11:07:02,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-10-16 11:07:02,694 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 12 states have internal predecessors, (24), 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 11:07:02,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:02,861 INFO L93 Difference]: Finished difference Result 144 states and 159 transitions. [2022-10-16 11:07:02,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-16 11:07:02,862 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-10-16 11:07:02,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:02,863 INFO L225 Difference]: With dead ends: 144 [2022-10-16 11:07:02,864 INFO L226 Difference]: Without dead ends: 143 [2022-10-16 11:07:02,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2022-10-16 11:07:02,869 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 142 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:02,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 259 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:07:02,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-10-16 11:07:02,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 58. [2022-10-16 11:07:02,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 46 states have (on average 1.4565217391304348) internal successors, (67), 57 states have internal predecessors, (67), 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 11:07:02,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2022-10-16 11:07:02,882 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 11 [2022-10-16 11:07:02,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:02,882 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2022-10-16 11:07:02,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 12 states have internal predecessors, (24), 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 11:07:02,883 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2022-10-16 11:07:02,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-16 11:07:02,884 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:02,884 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:02,921 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 11:07:03,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-10-16 11:07:03,099 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:07:03,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:03,102 INFO L85 PathProgramCache]: Analyzing trace with hash -186470036, now seen corresponding path program 1 times [2022-10-16 11:07:03,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:03,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636615214] [2022-10-16 11:07:03,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:03,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:03,252 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 11:07:03,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:03,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636615214] [2022-10-16 11:07:03,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636615214] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:07:03,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155872643] [2022-10-16 11:07:03,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:03,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:03,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:07:03,263 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 11:07:03,285 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 11:07:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:03,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 11:07:03,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:07:03,395 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:03,395 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:07:03,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155872643] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:07:03,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:07:03,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-10-16 11:07:03,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631147657] [2022-10-16 11:07:03,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:07:03,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 11:07:03,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:03,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 11:07:03,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-16 11:07:03,399 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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 11:07:03,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:03,445 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2022-10-16 11:07:03,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 11:07:03,445 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-10-16 11:07:03,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:03,453 INFO L225 Difference]: With dead ends: 58 [2022-10-16 11:07:03,453 INFO L226 Difference]: Without dead ends: 57 [2022-10-16 11:07:03,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-10-16 11:07:03,460 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 36 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:03,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 106 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:07:03,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-10-16 11:07:03,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-10-16 11:07:03,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 46 states have (on average 1.391304347826087) internal successors, (64), 56 states have internal predecessors, (64), 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 11:07:03,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2022-10-16 11:07:03,484 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 12 [2022-10-16 11:07:03,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:03,484 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2022-10-16 11:07:03,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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 11:07:03,485 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2022-10-16 11:07:03,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-16 11:07:03,487 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:03,487 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:03,514 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 11:07:03,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:03,703 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:07:03,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:03,704 INFO L85 PathProgramCache]: Analyzing trace with hash 883322077, now seen corresponding path program 1 times [2022-10-16 11:07:03,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:03,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539386146] [2022-10-16 11:07:03,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:03,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:03,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:03,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:07:03,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:03,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539386146] [2022-10-16 11:07:03,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539386146] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:07:03,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:07:03,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:07:03,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928242908] [2022-10-16 11:07:03,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:07:03,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:07:03,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:03,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:07:03,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:07:03,779 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 11:07:03,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:03,803 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2022-10-16 11:07:03,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:07:03,804 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-10-16 11:07:03,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:03,805 INFO L225 Difference]: With dead ends: 57 [2022-10-16 11:07:03,805 INFO L226 Difference]: Without dead ends: 56 [2022-10-16 11:07:03,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 11:07:03,807 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 2 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:03,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 92 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:07:03,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-10-16 11:07:03,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-10-16 11:07:03,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 46 states have (on average 1.3695652173913044) internal successors, (63), 55 states have internal predecessors, (63), 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 11:07:03,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2022-10-16 11:07:03,816 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 14 [2022-10-16 11:07:03,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:03,816 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2022-10-16 11:07:03,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 11:07:03,816 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2022-10-16 11:07:03,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-16 11:07:03,817 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:03,817 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:03,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-16 11:07:03,818 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:07:03,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:03,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1613180690, now seen corresponding path program 1 times [2022-10-16 11:07:03,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:03,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883984194] [2022-10-16 11:07:03,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:03,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:03,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:04,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:04,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:04,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883984194] [2022-10-16 11:07:04,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883984194] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:07:04,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887145211] [2022-10-16 11:07:04,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:04,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:04,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:07:04,217 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 11:07:04,228 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 11:07:04,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:04,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2022-10-16 11:07:04,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:07:04,326 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-16 11:07:04,387 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-10-16 11:07:04,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:04,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:07:04,490 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-10-16 11:07:04,496 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2022-10-16 11:07:04,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:04,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887145211] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:07:04,512 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:07:04,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 13 [2022-10-16 11:07:04,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709200141] [2022-10-16 11:07:04,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:07:04,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-16 11:07:04,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:04,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-16 11:07:04,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-10-16 11:07:04,514 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:07:04,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:04,761 INFO L93 Difference]: Finished difference Result 96 states and 108 transitions. [2022-10-16 11:07:04,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-16 11:07:04,761 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-10-16 11:07:04,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:04,762 INFO L225 Difference]: With dead ends: 96 [2022-10-16 11:07:04,763 INFO L226 Difference]: Without dead ends: 95 [2022-10-16 11:07:04,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2022-10-16 11:07:04,764 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 145 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:04,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 193 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:07:04,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-10-16 11:07:04,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 61. [2022-10-16 11:07:04,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 51 states have (on average 1.3529411764705883) internal successors, (69), 60 states have internal predecessors, (69), 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 11:07:04,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 69 transitions. [2022-10-16 11:07:04,775 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 69 transitions. Word has length 15 [2022-10-16 11:07:04,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:04,775 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 69 transitions. [2022-10-16 11:07:04,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:07:04,776 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 69 transitions. [2022-10-16 11:07:04,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-16 11:07:04,776 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:04,777 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:04,813 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 11:07:04,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:04,991 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:07:04,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:04,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1531052658, now seen corresponding path program 1 times [2022-10-16 11:07:04,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:04,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692060914] [2022-10-16 11:07:04,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:04,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:05,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:05,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:05,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:05,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692060914] [2022-10-16 11:07:05,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692060914] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:07:05,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728488239] [2022-10-16 11:07:05,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:05,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:05,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:07:05,335 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 11:07:05,358 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 11:07:05,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:05,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-10-16 11:07:05,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:07:05,415 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-16 11:07:05,475 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-16 11:07:05,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:05,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:07:05,548 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-10-16 11:07:05,552 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2022-10-16 11:07:05,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:05,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728488239] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:07:05,564 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:07:05,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 14 [2022-10-16 11:07:05,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967151811] [2022-10-16 11:07:05,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:07:05,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-16 11:07:05,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:05,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-16 11:07:05,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-10-16 11:07:05,566 INFO L87 Difference]: Start difference. First operand 61 states and 69 transitions. Second operand has 15 states, 14 states have (on average 2.857142857142857) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:07:05,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:05,888 INFO L93 Difference]: Finished difference Result 121 states and 137 transitions. [2022-10-16 11:07:05,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-10-16 11:07:05,889 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.857142857142857) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-10-16 11:07:05,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:05,890 INFO L225 Difference]: With dead ends: 121 [2022-10-16 11:07:05,890 INFO L226 Difference]: Without dead ends: 120 [2022-10-16 11:07:05,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=461, Unknown=0, NotChecked=0, Total=600 [2022-10-16 11:07:05,892 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 144 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:05,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 237 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:07:05,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-10-16 11:07:05,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 66. [2022-10-16 11:07:05,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 56 states have (on average 1.3571428571428572) internal successors, (76), 65 states have internal predecessors, (76), 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 11:07:05,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 76 transitions. [2022-10-16 11:07:05,904 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 76 transitions. Word has length 16 [2022-10-16 11:07:05,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:05,904 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 76 transitions. [2022-10-16 11:07:05,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.857142857142857) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:07:05,905 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 76 transitions. [2022-10-16 11:07:05,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-16 11:07:05,906 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:05,906 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:05,942 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 11:07:06,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:06,120 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:07:06,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:06,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1531006081, now seen corresponding path program 1 times [2022-10-16 11:07:06,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:06,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940996893] [2022-10-16 11:07:06,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:06,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:06,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:06,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:07:06,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:06,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940996893] [2022-10-16 11:07:06,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940996893] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:07:06,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:07:06,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:07:06,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72775430] [2022-10-16 11:07:06,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:07:06,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:07:06,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:06,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:07:06,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:07:06,181 INFO L87 Difference]: Start difference. First operand 66 states and 76 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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 11:07:06,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:06,208 INFO L93 Difference]: Finished difference Result 96 states and 109 transitions. [2022-10-16 11:07:06,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:07:06,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-10-16 11:07:06,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:06,209 INFO L225 Difference]: With dead ends: 96 [2022-10-16 11:07:06,209 INFO L226 Difference]: Without dead ends: 94 [2022-10-16 11:07:06,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 11:07:06,212 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 21 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:06,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 107 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:07:06,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-10-16 11:07:06,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 87. [2022-10-16 11:07:06,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 77 states have (on average 1.3896103896103895) internal successors, (107), 86 states have internal predecessors, (107), 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 11:07:06,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 107 transitions. [2022-10-16 11:07:06,238 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 107 transitions. Word has length 16 [2022-10-16 11:07:06,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:06,238 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 107 transitions. [2022-10-16 11:07:06,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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 11:07:06,238 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 107 transitions. [2022-10-16 11:07:06,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-10-16 11:07:06,240 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:06,241 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:06,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-16 11:07:06,241 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:07:06,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:06,242 INFO L85 PathProgramCache]: Analyzing trace with hash -217992043, now seen corresponding path program 1 times [2022-10-16 11:07:06,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:06,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542886511] [2022-10-16 11:07:06,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:06,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:06,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:06,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:07:06,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:06,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542886511] [2022-10-16 11:07:06,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542886511] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:07:06,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:07:06,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 11:07:06,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503039825] [2022-10-16 11:07:06,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:07:06,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 11:07:06,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:06,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 11:07:06,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-16 11:07:06,321 INFO L87 Difference]: Start difference. First operand 87 states and 107 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:07:06,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:06,369 INFO L93 Difference]: Finished difference Result 101 states and 125 transitions. [2022-10-16 11:07:06,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 11:07:06,369 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-10-16 11:07:06,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:06,370 INFO L225 Difference]: With dead ends: 101 [2022-10-16 11:07:06,370 INFO L226 Difference]: Without dead ends: 100 [2022-10-16 11:07:06,371 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 11:07:06,372 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 9 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:06,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 111 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:07:06,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-10-16 11:07:06,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 92. [2022-10-16 11:07:06,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 82 states have (on average 1.3780487804878048) internal successors, (113), 91 states have internal predecessors, (113), 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 11:07:06,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 113 transitions. [2022-10-16 11:07:06,386 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 113 transitions. Word has length 17 [2022-10-16 11:07:06,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:06,386 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 113 transitions. [2022-10-16 11:07:06,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:07:06,387 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 113 transitions. [2022-10-16 11:07:06,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-10-16 11:07:06,388 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:06,388 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:06,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-16 11:07:06,388 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:07:06,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:06,389 INFO L85 PathProgramCache]: Analyzing trace with hash -217993645, now seen corresponding path program 1 times [2022-10-16 11:07:06,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:06,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867331674] [2022-10-16 11:07:06,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:06,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:06,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:06,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:07:06,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:06,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867331674] [2022-10-16 11:07:06,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867331674] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:07:06,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:07:06,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:07:06,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162935596] [2022-10-16 11:07:06,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:07:06,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:07:06,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:06,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:07:06,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:07:06,430 INFO L87 Difference]: Start difference. First operand 92 states and 113 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:07:06,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:06,479 INFO L93 Difference]: Finished difference Result 131 states and 161 transitions. [2022-10-16 11:07:06,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:07:06,479 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-10-16 11:07:06,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:06,480 INFO L225 Difference]: With dead ends: 131 [2022-10-16 11:07:06,480 INFO L226 Difference]: Without dead ends: 129 [2022-10-16 11:07:06,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 11:07:06,482 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 19 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:06,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 84 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:07:06,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-10-16 11:07:06,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 123. [2022-10-16 11:07:06,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 113 states have (on average 1.3893805309734513) internal successors, (157), 122 states have internal predecessors, (157), 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 11:07:06,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 157 transitions. [2022-10-16 11:07:06,499 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 157 transitions. Word has length 17 [2022-10-16 11:07:06,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:06,500 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 157 transitions. [2022-10-16 11:07:06,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:07:06,500 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 157 transitions. [2022-10-16 11:07:06,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-16 11:07:06,501 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:06,501 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:06,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-16 11:07:06,501 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:07:06,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:06,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1832181360, now seen corresponding path program 1 times [2022-10-16 11:07:06,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:06,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860916073] [2022-10-16 11:07:06,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:06,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:06,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:07:06,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:06,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860916073] [2022-10-16 11:07:06,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860916073] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:07:06,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:07:06,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:07:06,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689619451] [2022-10-16 11:07:06,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:07:06,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:07:06,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:06,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:07:06,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:07:06,547 INFO L87 Difference]: Start difference. First operand 123 states and 157 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:07:06,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:06,581 INFO L93 Difference]: Finished difference Result 177 states and 226 transitions. [2022-10-16 11:07:06,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:07:06,581 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-10-16 11:07:06,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:06,583 INFO L225 Difference]: With dead ends: 177 [2022-10-16 11:07:06,583 INFO L226 Difference]: Without dead ends: 175 [2022-10-16 11:07:06,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 11:07:06,584 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 18 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:06,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 105 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:07:06,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-10-16 11:07:06,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 169. [2022-10-16 11:07:06,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 159 states have (on average 1.371069182389937) internal successors, (218), 168 states have internal predecessors, (218), 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 11:07:06,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 218 transitions. [2022-10-16 11:07:06,607 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 218 transitions. Word has length 18 [2022-10-16 11:07:06,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:06,607 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 218 transitions. [2022-10-16 11:07:06,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:07:06,607 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 218 transitions. [2022-10-16 11:07:06,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-16 11:07:06,608 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:06,608 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:06,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-10-16 11:07:06,609 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:07:06,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:06,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1770196453, now seen corresponding path program 1 times [2022-10-16 11:07:06,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:06,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759244185] [2022-10-16 11:07:06,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:06,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:06,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:06,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:07:06,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:06,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759244185] [2022-10-16 11:07:06,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759244185] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:07:06,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:07:06,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-16 11:07:06,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121087611] [2022-10-16 11:07:06,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:07:06,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 11:07:06,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:06,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 11:07:06,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-10-16 11:07:06,759 INFO L87 Difference]: Start difference. First operand 169 states and 218 transitions. Second operand has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 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 11:07:06,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:06,869 INFO L93 Difference]: Finished difference Result 197 states and 252 transitions. [2022-10-16 11:07:06,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 11:07:06,870 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-10-16 11:07:06,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:06,871 INFO L225 Difference]: With dead ends: 197 [2022-10-16 11:07:06,871 INFO L226 Difference]: Without dead ends: 196 [2022-10-16 11:07:06,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-16 11:07:06,872 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 19 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:06,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 209 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:07:06,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-10-16 11:07:06,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 175. [2022-10-16 11:07:06,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 165 states have (on average 1.3636363636363635) internal successors, (225), 174 states have internal predecessors, (225), 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 11:07:06,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 225 transitions. [2022-10-16 11:07:06,896 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 225 transitions. Word has length 22 [2022-10-16 11:07:06,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:06,897 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 225 transitions. [2022-10-16 11:07:06,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 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 11:07:06,897 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 225 transitions. [2022-10-16 11:07:06,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-16 11:07:06,898 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:06,898 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:06,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-10-16 11:07:06,898 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:07:06,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:06,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1770243030, now seen corresponding path program 1 times [2022-10-16 11:07:06,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:06,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741297704] [2022-10-16 11:07:06,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:06,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:06,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:06,979 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:07:06,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:06,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741297704] [2022-10-16 11:07:06,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741297704] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:07:06,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403158965] [2022-10-16 11:07:06,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:06,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:06,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:07:06,982 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 11:07:07,004 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 11:07:07,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:07,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 11:07:07,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:07:07,076 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:07:07,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:07:07,116 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:07:07,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403158965] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:07:07,116 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:07:07,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-10-16 11:07:07,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860603334] [2022-10-16 11:07:07,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:07:07,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-16 11:07:07,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:07,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-16 11:07:07,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-10-16 11:07:07,118 INFO L87 Difference]: Start difference. First operand 175 states and 225 transitions. Second operand has 12 states, 11 states have (on average 3.909090909090909) internal successors, (43), 12 states have internal predecessors, (43), 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 11:07:07,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:07,255 INFO L93 Difference]: Finished difference Result 429 states and 543 transitions. [2022-10-16 11:07:07,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-16 11:07:07,256 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.909090909090909) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-10-16 11:07:07,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:07,258 INFO L225 Difference]: With dead ends: 429 [2022-10-16 11:07:07,259 INFO L226 Difference]: Without dead ends: 428 [2022-10-16 11:07:07,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2022-10-16 11:07:07,260 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 152 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:07,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 280 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:07:07,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-10-16 11:07:07,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 394. [2022-10-16 11:07:07,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 384 states have (on average 1.375) internal successors, (528), 393 states have internal predecessors, (528), 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 11:07:07,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 528 transitions. [2022-10-16 11:07:07,313 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 528 transitions. Word has length 22 [2022-10-16 11:07:07,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:07,313 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 528 transitions. [2022-10-16 11:07:07,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.909090909090909) internal successors, (43), 12 states have internal predecessors, (43), 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 11:07:07,313 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 528 transitions. [2022-10-16 11:07:07,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-16 11:07:07,314 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:07,314 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:07,351 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 11:07:07,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:07,529 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:07:07,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:07,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1276802718, now seen corresponding path program 1 times [2022-10-16 11:07:07,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:07,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969939396] [2022-10-16 11:07:07,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:07,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:07,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:07,582 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-16 11:07:07,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:07,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969939396] [2022-10-16 11:07:07,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969939396] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:07:07,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:07:07,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:07:07,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425784578] [2022-10-16 11:07:07,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:07:07,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:07:07,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:07,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:07:07,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:07:07,585 INFO L87 Difference]: Start difference. First operand 394 states and 528 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:07:07,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:07,650 INFO L93 Difference]: Finished difference Result 394 states and 528 transitions. [2022-10-16 11:07:07,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:07:07,651 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-10-16 11:07:07,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:07,653 INFO L225 Difference]: With dead ends: 394 [2022-10-16 11:07:07,653 INFO L226 Difference]: Without dead ends: 393 [2022-10-16 11:07:07,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 11:07:07,654 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 1 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:07,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 89 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:07:07,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-10-16 11:07:07,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 376. [2022-10-16 11:07:07,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 367 states have (on average 1.3542234332425067) internal successors, (497), 375 states have internal predecessors, (497), 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 11:07:07,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 497 transitions. [2022-10-16 11:07:07,741 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 497 transitions. Word has length 23 [2022-10-16 11:07:07,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:07,741 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 497 transitions. [2022-10-16 11:07:07,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:07:07,741 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 497 transitions. [2022-10-16 11:07:07,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-16 11:07:07,742 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:07,742 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:07,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-10-16 11:07:07,743 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:07:07,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:07,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1380662764, now seen corresponding path program 1 times [2022-10-16 11:07:07,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:07,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348763938] [2022-10-16 11:07:07,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:07,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:07,822 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:07:07,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:07,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348763938] [2022-10-16 11:07:07,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348763938] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:07:07,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479078197] [2022-10-16 11:07:07,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:07,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:07,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:07:07,825 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 11:07:07,843 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 11:07:07,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:07,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-16 11:07:07,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:07:07,966 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:07:07,966 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:07:07,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479078197] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:07:07,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:07:07,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2022-10-16 11:07:07,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66183843] [2022-10-16 11:07:07,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:07:07,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 11:07:07,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:07,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 11:07:07,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-10-16 11:07:07,969 INFO L87 Difference]: Start difference. First operand 376 states and 497 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:07:08,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:08,102 INFO L93 Difference]: Finished difference Result 736 states and 969 transitions. [2022-10-16 11:07:08,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 11:07:08,102 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-10-16 11:07:08,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:08,105 INFO L225 Difference]: With dead ends: 736 [2022-10-16 11:07:08,105 INFO L226 Difference]: Without dead ends: 471 [2022-10-16 11:07:08,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-10-16 11:07:08,107 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 38 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:08,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 126 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:07:08,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2022-10-16 11:07:08,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 419. [2022-10-16 11:07:08,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 410 states have (on average 1.3439024390243903) internal successors, (551), 418 states have internal predecessors, (551), 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 11:07:08,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 551 transitions. [2022-10-16 11:07:08,167 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 551 transitions. Word has length 23 [2022-10-16 11:07:08,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:08,167 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 551 transitions. [2022-10-16 11:07:08,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:07:08,167 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 551 transitions. [2022-10-16 11:07:08,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-16 11:07:08,168 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:08,168 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:08,215 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 11:07:08,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:08,373 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:07:08,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:08,374 INFO L85 PathProgramCache]: Analyzing trace with hash -957040835, now seen corresponding path program 1 times [2022-10-16 11:07:08,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:08,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748240723] [2022-10-16 11:07:08,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:08,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:08,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:08,450 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:07:08,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:08,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748240723] [2022-10-16 11:07:08,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748240723] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:07:08,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29770924] [2022-10-16 11:07:08,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:08,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:08,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:07:08,453 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 11:07:08,475 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 11:07:08,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:08,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 11:07:08,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:07:08,543 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:07:08,543 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:07:08,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29770924] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:07:08,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:07:08,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-10-16 11:07:08,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895485377] [2022-10-16 11:07:08,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:07:08,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:07:08,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:08,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:07:08,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-16 11:07:08,547 INFO L87 Difference]: Start difference. First operand 419 states and 551 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:07:08,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:08,613 INFO L93 Difference]: Finished difference Result 419 states and 551 transitions. [2022-10-16 11:07:08,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:07:08,614 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-10-16 11:07:08,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:08,616 INFO L225 Difference]: With dead ends: 419 [2022-10-16 11:07:08,617 INFO L226 Difference]: Without dead ends: 418 [2022-10-16 11:07:08,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-16 11:07:08,619 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 22 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:08,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 76 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:07:08,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-10-16 11:07:08,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2022-10-16 11:07:08,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 410 states have (on average 1.3146341463414635) internal successors, (539), 417 states have internal predecessors, (539), 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 11:07:08,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 539 transitions. [2022-10-16 11:07:08,705 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 539 transitions. Word has length 23 [2022-10-16 11:07:08,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:08,707 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 539 transitions. [2022-10-16 11:07:08,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:07:08,707 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 539 transitions. [2022-10-16 11:07:08,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-16 11:07:08,708 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:08,708 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1] [2022-10-16 11:07:08,748 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 11:07:08,921 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,SelfDestructingSolverStorable16 [2022-10-16 11:07:08,921 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:07:08,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:08,922 INFO L85 PathProgramCache]: Analyzing trace with hash -868473059, now seen corresponding path program 2 times [2022-10-16 11:07:08,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:08,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343891850] [2022-10-16 11:07:08,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:08,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:09,051 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:09,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:09,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343891850] [2022-10-16 11:07:09,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343891850] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:07:09,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080815334] [2022-10-16 11:07:09,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 11:07:09,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:09,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:07:09,058 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 11:07:09,075 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 11:07:09,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-16 11:07:09,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:07:09,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 11:07:09,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:07:09,169 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-16 11:07:09,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:07:09,215 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-16 11:07:09,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080815334] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:07:09,215 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:07:09,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 14 [2022-10-16 11:07:09,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161611276] [2022-10-16 11:07:09,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:07:09,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-16 11:07:09,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:09,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-16 11:07:09,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-10-16 11:07:09,217 INFO L87 Difference]: Start difference. First operand 418 states and 539 transitions. Second operand has 15 states, 14 states have (on average 2.357142857142857) internal successors, (33), 15 states have internal predecessors, (33), 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 11:07:09,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:09,645 INFO L93 Difference]: Finished difference Result 2149 states and 2813 transitions. [2022-10-16 11:07:09,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-16 11:07:09,646 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.357142857142857) internal successors, (33), 15 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-10-16 11:07:09,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:09,657 INFO L225 Difference]: With dead ends: 2149 [2022-10-16 11:07:09,657 INFO L226 Difference]: Without dead ends: 2148 [2022-10-16 11:07:09,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=207, Invalid=495, Unknown=0, NotChecked=0, Total=702 [2022-10-16 11:07:09,659 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 373 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:09,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 260 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:07:09,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2148 states. [2022-10-16 11:07:09,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2148 to 403. [2022-10-16 11:07:09,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 396 states have (on average 1.3156565656565657) internal successors, (521), 402 states have internal predecessors, (521), 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 11:07:09,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 521 transitions. [2022-10-16 11:07:09,740 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 521 transitions. Word has length 23 [2022-10-16 11:07:09,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:09,740 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 521 transitions. [2022-10-16 11:07:09,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.357142857142857) internal successors, (33), 15 states have internal predecessors, (33), 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 11:07:09,741 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 521 transitions. [2022-10-16 11:07:09,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-16 11:07:09,741 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:09,741 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:09,778 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 11:07:09,956 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,SelfDestructingSolverStorable17 [2022-10-16 11:07:09,956 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:07:09,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:09,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1803364590, now seen corresponding path program 1 times [2022-10-16 11:07:09,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:09,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489766795] [2022-10-16 11:07:09,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:09,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:09,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:10,074 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:10,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:10,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489766795] [2022-10-16 11:07:10,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489766795] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:07:10,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996570996] [2022-10-16 11:07:10,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:10,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:10,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:07:10,079 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 11:07:10,088 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 11:07:10,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:10,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-16 11:07:10,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:07:10,219 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:10,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:07:10,298 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:10,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996570996] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:07:10,299 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:07:10,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2022-10-16 11:07:10,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902568553] [2022-10-16 11:07:10,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:07:10,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-16 11:07:10,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:10,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-16 11:07:10,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-10-16 11:07:10,304 INFO L87 Difference]: Start difference. First operand 403 states and 521 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 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 11:07:10,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:10,543 INFO L93 Difference]: Finished difference Result 768 states and 992 transitions. [2022-10-16 11:07:10,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-16 11:07:10,543 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-10-16 11:07:10,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:10,547 INFO L225 Difference]: With dead ends: 768 [2022-10-16 11:07:10,547 INFO L226 Difference]: Without dead ends: 504 [2022-10-16 11:07:10,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 34 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2022-10-16 11:07:10,551 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 80 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:10,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 227 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:07:10,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2022-10-16 11:07:10,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 407. [2022-10-16 11:07:10,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 400 states have (on average 1.315) internal successors, (526), 406 states have internal predecessors, (526), 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 11:07:10,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 526 transitions. [2022-10-16 11:07:10,625 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 526 transitions. Word has length 23 [2022-10-16 11:07:10,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:10,625 INFO L495 AbstractCegarLoop]: Abstraction has 407 states and 526 transitions. [2022-10-16 11:07:10,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 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 11:07:10,625 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 526 transitions. [2022-10-16 11:07:10,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-10-16 11:07:10,626 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:10,626 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:10,663 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-10-16 11:07:10,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:10,842 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:07:10,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:10,842 INFO L85 PathProgramCache]: Analyzing trace with hash 926178695, now seen corresponding path program 1 times [2022-10-16 11:07:10,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:10,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936500535] [2022-10-16 11:07:10,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:10,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:10,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:10,902 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:07:10,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:10,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936500535] [2022-10-16 11:07:10,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936500535] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:07:10,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797173922] [2022-10-16 11:07:10,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:10,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:10,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:07:10,905 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 11:07:10,917 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 11:07:10,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:10,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 11:07:10,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:07:10,994 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:07:10,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:07:11,031 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:07:11,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797173922] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:07:11,032 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:07:11,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-10-16 11:07:11,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460291189] [2022-10-16 11:07:11,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:07:11,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-16 11:07:11,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:11,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-16 11:07:11,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-10-16 11:07:11,034 INFO L87 Difference]: Start difference. First operand 407 states and 526 transitions. Second operand has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:07:11,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:11,213 INFO L93 Difference]: Finished difference Result 914 states and 1210 transitions. [2022-10-16 11:07:11,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-16 11:07:11,214 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-10-16 11:07:11,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:11,218 INFO L225 Difference]: With dead ends: 914 [2022-10-16 11:07:11,218 INFO L226 Difference]: Without dead ends: 913 [2022-10-16 11:07:11,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2022-10-16 11:07:11,220 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 174 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:11,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 184 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:07:11,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2022-10-16 11:07:11,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 879. [2022-10-16 11:07:11,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 872 states have (on average 1.3245412844036697) internal successors, (1155), 878 states have internal predecessors, (1155), 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 11:07:11,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1155 transitions. [2022-10-16 11:07:11,375 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1155 transitions. Word has length 24 [2022-10-16 11:07:11,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:11,376 INFO L495 AbstractCegarLoop]: Abstraction has 879 states and 1155 transitions. [2022-10-16 11:07:11,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:07:11,376 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1155 transitions. [2022-10-16 11:07:11,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-10-16 11:07:11,377 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:11,377 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:11,412 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 11:07:11,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:11,590 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:07:11,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:11,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1353231424, now seen corresponding path program 1 times [2022-10-16 11:07:11,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:11,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011715660] [2022-10-16 11:07:11,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:11,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:11,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:11,664 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:07:11,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:11,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011715660] [2022-10-16 11:07:11,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011715660] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:07:11,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284347710] [2022-10-16 11:07:11,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:11,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:11,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:07:11,666 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 11:07:11,674 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 11:07:11,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:11,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 11:07:11,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:07:11,757 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:07:11,757 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:07:11,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284347710] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:07:11,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:07:11,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-10-16 11:07:11,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454499327] [2022-10-16 11:07:11,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:07:11,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 11:07:11,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:11,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 11:07:11,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-16 11:07:11,760 INFO L87 Difference]: Start difference. First operand 879 states and 1155 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:07:11,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:11,896 INFO L93 Difference]: Finished difference Result 884 states and 1155 transitions. [2022-10-16 11:07:11,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 11:07:11,897 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-10-16 11:07:11,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:11,901 INFO L225 Difference]: With dead ends: 884 [2022-10-16 11:07:11,901 INFO L226 Difference]: Without dead ends: 883 [2022-10-16 11:07:11,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-10-16 11:07:11,902 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 39 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:11,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 131 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:07:11,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2022-10-16 11:07:12,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 878. [2022-10-16 11:07:12,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 872 states have (on average 1.286697247706422) internal successors, (1122), 877 states have internal predecessors, (1122), 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 11:07:12,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1122 transitions. [2022-10-16 11:07:12,014 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1122 transitions. Word has length 25 [2022-10-16 11:07:12,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:12,014 INFO L495 AbstractCegarLoop]: Abstraction has 878 states and 1122 transitions. [2022-10-16 11:07:12,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:07:12,015 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1122 transitions. [2022-10-16 11:07:12,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-10-16 11:07:12,015 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:12,015 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:12,049 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 11:07:12,230 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,SelfDestructingSolverStorable20 [2022-10-16 11:07:12,231 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:07:12,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:12,232 INFO L85 PathProgramCache]: Analyzing trace with hash 348332202, now seen corresponding path program 2 times [2022-10-16 11:07:12,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:12,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361913935] [2022-10-16 11:07:12,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:12,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:12,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:12,623 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:12,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:12,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361913935] [2022-10-16 11:07:12,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361913935] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:07:12,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032477909] [2022-10-16 11:07:12,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 11:07:12,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:12,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:07:12,625 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 11:07:12,643 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 11:07:12,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 11:07:12,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:07:12,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 27 conjunts are in the unsatisfiable core [2022-10-16 11:07:12,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:07:12,732 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-10-16 11:07:12,857 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-10-16 11:07:12,860 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:12,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:07:12,993 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-10-16 11:07:12,996 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2022-10-16 11:07:13,014 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:13,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032477909] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:07:13,014 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:07:13,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 23 [2022-10-16 11:07:13,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149539228] [2022-10-16 11:07:13,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:07:13,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-10-16 11:07:13,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:13,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-10-16 11:07:13,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2022-10-16 11:07:13,016 INFO L87 Difference]: Start difference. First operand 878 states and 1122 transitions. Second operand has 24 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 24 states have internal predecessors, (68), 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 11:07:13,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:13,952 INFO L93 Difference]: Finished difference Result 1535 states and 2019 transitions. [2022-10-16 11:07:13,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-16 11:07:13,953 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 24 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-10-16 11:07:13,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:13,960 INFO L225 Difference]: With dead ends: 1535 [2022-10-16 11:07:13,960 INFO L226 Difference]: Without dead ends: 1534 [2022-10-16 11:07:13,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=237, Invalid=1323, Unknown=0, NotChecked=0, Total=1560 [2022-10-16 11:07:13,962 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 244 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:13,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 558 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-16 11:07:13,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1534 states. [2022-10-16 11:07:14,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1534 to 963. [2022-10-16 11:07:14,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 957 states have (on average 1.2873563218390804) internal successors, (1232), 962 states have internal predecessors, (1232), 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 11:07:14,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1232 transitions. [2022-10-16 11:07:14,107 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1232 transitions. Word has length 27 [2022-10-16 11:07:14,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:14,108 INFO L495 AbstractCegarLoop]: Abstraction has 963 states and 1232 transitions. [2022-10-16 11:07:14,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 24 states have internal predecessors, (68), 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 11:07:14,108 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1232 transitions. [2022-10-16 11:07:14,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-10-16 11:07:14,109 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:14,109 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:14,138 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 11:07:14,322 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,SelfDestructingSolverStorable21 [2022-10-16 11:07:14,323 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:07:14,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:14,324 INFO L85 PathProgramCache]: Analyzing trace with hash -2086650122, now seen corresponding path program 1 times [2022-10-16 11:07:14,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:14,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248970871] [2022-10-16 11:07:14,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:14,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:14,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:14,692 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:14,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:14,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248970871] [2022-10-16 11:07:14,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248970871] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:07:14,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594852743] [2022-10-16 11:07:14,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:14,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:14,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:07:14,695 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:07:14,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-10-16 11:07:14,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:14,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 27 conjunts are in the unsatisfiable core [2022-10-16 11:07:14,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:07:14,796 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-10-16 11:07:14,912 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-10-16 11:07:14,914 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:14,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:07:15,040 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-10-16 11:07:15,044 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-10-16 11:07:15,062 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:15,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594852743] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:07:15,062 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:07:15,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 23 [2022-10-16 11:07:15,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60788907] [2022-10-16 11:07:15,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:07:15,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-10-16 11:07:15,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:15,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-10-16 11:07:15,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2022-10-16 11:07:15,065 INFO L87 Difference]: Start difference. First operand 963 states and 1232 transitions. Second operand has 24 states, 23 states have (on average 3.130434782608696) internal successors, (72), 24 states have internal predecessors, (72), 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 11:07:16,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:16,034 INFO L93 Difference]: Finished difference Result 1819 states and 2424 transitions. [2022-10-16 11:07:16,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-10-16 11:07:16,035 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.130434782608696) internal successors, (72), 24 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-10-16 11:07:16,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:16,044 INFO L225 Difference]: With dead ends: 1819 [2022-10-16 11:07:16,044 INFO L226 Difference]: Without dead ends: 1818 [2022-10-16 11:07:16,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=241, Invalid=1399, Unknown=0, NotChecked=0, Total=1640 [2022-10-16 11:07:16,046 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 210 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:16,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 530 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 11:07:16,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2022-10-16 11:07:16,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 926. [2022-10-16 11:07:16,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 920 states have (on average 1.2782608695652173) internal successors, (1176), 925 states have internal predecessors, (1176), 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 11:07:16,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1176 transitions. [2022-10-16 11:07:16,179 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1176 transitions. Word has length 28 [2022-10-16 11:07:16,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:16,179 INFO L495 AbstractCegarLoop]: Abstraction has 926 states and 1176 transitions. [2022-10-16 11:07:16,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.130434782608696) internal successors, (72), 24 states have internal predecessors, (72), 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 11:07:16,180 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1176 transitions. [2022-10-16 11:07:16,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-10-16 11:07:16,181 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:16,181 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:16,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-10-16 11:07:16,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:16,395 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:07:16,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:16,396 INFO L85 PathProgramCache]: Analyzing trace with hash -261645845, now seen corresponding path program 1 times [2022-10-16 11:07:16,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:16,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303984758] [2022-10-16 11:07:16,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:16,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:16,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:16,461 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-16 11:07:16,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:16,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303984758] [2022-10-16 11:07:16,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303984758] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:07:16,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399963955] [2022-10-16 11:07:16,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:16,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:16,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:07:16,463 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:07:16,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-10-16 11:07:16,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:16,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 11:07:16,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:07:16,554 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-16 11:07:16,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:07:16,589 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-16 11:07:16,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399963955] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:07:16,590 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:07:16,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-10-16 11:07:16,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291344117] [2022-10-16 11:07:16,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:07:16,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-16 11:07:16,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:16,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-16 11:07:16,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-10-16 11:07:16,592 INFO L87 Difference]: Start difference. First operand 926 states and 1176 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 12 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:07:17,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:17,038 INFO L93 Difference]: Finished difference Result 2368 states and 3114 transitions. [2022-10-16 11:07:17,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-16 11:07:17,038 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 12 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-10-16 11:07:17,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:17,049 INFO L225 Difference]: With dead ends: 2368 [2022-10-16 11:07:17,049 INFO L226 Difference]: Without dead ends: 2367 [2022-10-16 11:07:17,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2022-10-16 11:07:17,051 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 83 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:17,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 195 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:07:17,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2367 states. [2022-10-16 11:07:17,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2367 to 2327. [2022-10-16 11:07:17,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2327 states, 2321 states have (on average 1.2878069797501077) internal successors, (2989), 2326 states have internal predecessors, (2989), 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 11:07:17,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2327 states to 2327 states and 2989 transitions. [2022-10-16 11:07:17,458 INFO L78 Accepts]: Start accepts. Automaton has 2327 states and 2989 transitions. Word has length 29 [2022-10-16 11:07:17,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:17,459 INFO L495 AbstractCegarLoop]: Abstraction has 2327 states and 2989 transitions. [2022-10-16 11:07:17,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 12 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:07:17,459 INFO L276 IsEmpty]: Start isEmpty. Operand 2327 states and 2989 transitions. [2022-10-16 11:07:17,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-10-16 11:07:17,460 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:17,460 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:17,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-10-16 11:07:17,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:17,674 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:07:17,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:17,675 INFO L85 PathProgramCache]: Analyzing trace with hash 478913508, now seen corresponding path program 1 times [2022-10-16 11:07:17,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:17,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627709165] [2022-10-16 11:07:17,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:17,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:17,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:17,734 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-16 11:07:17,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:17,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627709165] [2022-10-16 11:07:17,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627709165] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:07:17,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768592853] [2022-10-16 11:07:17,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:17,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:17,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:07:17,737 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:07:17,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-10-16 11:07:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:17,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 11:07:17,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:07:17,846 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-16 11:07:17,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:07:17,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768592853] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:07:17,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:07:17,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-10-16 11:07:17,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149068159] [2022-10-16 11:07:17,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:07:17,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 11:07:17,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:17,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 11:07:17,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-16 11:07:17,848 INFO L87 Difference]: Start difference. First operand 2327 states and 2989 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:07:18,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:18,222 INFO L93 Difference]: Finished difference Result 2329 states and 2989 transitions. [2022-10-16 11:07:18,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 11:07:18,223 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-10-16 11:07:18,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:18,233 INFO L225 Difference]: With dead ends: 2329 [2022-10-16 11:07:18,233 INFO L226 Difference]: Without dead ends: 2328 [2022-10-16 11:07:18,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-10-16 11:07:18,235 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 33 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:18,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 95 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:07:18,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2328 states. [2022-10-16 11:07:18,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2328 to 2326. [2022-10-16 11:07:18,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2326 states, 2321 states have (on average 1.2554933218440327) internal successors, (2914), 2325 states have internal predecessors, (2914), 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 11:07:18,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2326 states to 2326 states and 2914 transitions. [2022-10-16 11:07:18,588 INFO L78 Accepts]: Start accepts. Automaton has 2326 states and 2914 transitions. Word has length 30 [2022-10-16 11:07:18,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:18,588 INFO L495 AbstractCegarLoop]: Abstraction has 2326 states and 2914 transitions. [2022-10-16 11:07:18,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:07:18,589 INFO L276 IsEmpty]: Start isEmpty. Operand 2326 states and 2914 transitions. [2022-10-16 11:07:18,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-10-16 11:07:18,590 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:18,590 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:18,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-10-16 11:07:18,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-10-16 11:07:18,803 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:07:18,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:18,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1324869756, now seen corresponding path program 3 times [2022-10-16 11:07:18,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:18,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971016337] [2022-10-16 11:07:18,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:18,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:18,976 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:18,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:18,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971016337] [2022-10-16 11:07:18,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971016337] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:07:18,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610949426] [2022-10-16 11:07:18,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 11:07:18,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:18,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:07:18,979 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:07:18,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-10-16 11:07:19,034 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-10-16 11:07:19,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:07:19,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 14 conjunts are in the unsatisfiable core [2022-10-16 11:07:19,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:07:19,198 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:19,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:07:19,334 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:19,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610949426] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:07:19,334 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:07:19,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 22 [2022-10-16 11:07:19,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920199891] [2022-10-16 11:07:19,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:07:19,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-10-16 11:07:19,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:19,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-10-16 11:07:19,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2022-10-16 11:07:19,338 INFO L87 Difference]: Start difference. First operand 2326 states and 2914 transitions. Second operand has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 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 11:07:19,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:19,965 INFO L93 Difference]: Finished difference Result 4586 states and 5747 transitions. [2022-10-16 11:07:19,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-10-16 11:07:19,966 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-10-16 11:07:19,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:19,984 INFO L225 Difference]: With dead ends: 4586 [2022-10-16 11:07:19,984 INFO L226 Difference]: Without dead ends: 2905 [2022-10-16 11:07:19,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 52 SyntacticMatches, 9 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=186, Invalid=936, Unknown=0, NotChecked=0, Total=1122 [2022-10-16 11:07:19,988 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 225 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:19,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 337 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 11:07:19,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2905 states. [2022-10-16 11:07:20,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2905 to 2721. [2022-10-16 11:07:20,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2721 states, 2716 states have (on average 1.2407952871870398) internal successors, (3370), 2720 states have internal predecessors, (3370), 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 11:07:20,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2721 states to 2721 states and 3370 transitions. [2022-10-16 11:07:20,475 INFO L78 Accepts]: Start accepts. Automaton has 2721 states and 3370 transitions. Word has length 35 [2022-10-16 11:07:20,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:20,475 INFO L495 AbstractCegarLoop]: Abstraction has 2721 states and 3370 transitions. [2022-10-16 11:07:20,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 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 11:07:20,476 INFO L276 IsEmpty]: Start isEmpty. Operand 2721 states and 3370 transitions. [2022-10-16 11:07:20,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-10-16 11:07:20,477 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:20,477 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:20,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-10-16 11:07:20,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-10-16 11:07:20,691 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:07:20,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:20,693 INFO L85 PathProgramCache]: Analyzing trace with hash 776754496, now seen corresponding path program 4 times [2022-10-16 11:07:20,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:20,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318168673] [2022-10-16 11:07:20,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:20,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:20,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:21,367 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:21,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:21,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318168673] [2022-10-16 11:07:21,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318168673] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:07:21,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294104019] [2022-10-16 11:07:21,368 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 11:07:21,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:21,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:07:21,369 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:07:21,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-10-16 11:07:21,445 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 11:07:21,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:07:21,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 31 conjunts are in the unsatisfiable core [2022-10-16 11:07:21,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:07:21,550 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-10-16 11:07:22,251 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-10-16 11:07:22,252 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2022-10-16 11:07:22,260 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 10 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:22,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:07:23,109 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2022-10-16 11:07:23,115 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 28 [2022-10-16 11:07:23,218 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:23,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294104019] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:07:23,219 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:07:23,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 41 [2022-10-16 11:07:23,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121363581] [2022-10-16 11:07:23,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:07:23,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-10-16 11:07:23,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:23,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-10-16 11:07:23,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1574, Unknown=0, NotChecked=0, Total=1722 [2022-10-16 11:07:23,222 INFO L87 Difference]: Start difference. First operand 2721 states and 3370 transitions. Second operand has 42 states, 41 states have (on average 2.4390243902439024) internal successors, (100), 42 states have internal predecessors, (100), 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 11:07:24,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:24,767 INFO L93 Difference]: Finished difference Result 3398 states and 4152 transitions. [2022-10-16 11:07:24,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-10-16 11:07:24,768 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.4390243902439024) internal successors, (100), 42 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-10-16 11:07:24,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:24,782 INFO L225 Difference]: With dead ends: 3398 [2022-10-16 11:07:24,782 INFO L226 Difference]: Without dead ends: 3397 [2022-10-16 11:07:24,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 48 SyntacticMatches, 5 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 739 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=338, Invalid=3444, Unknown=0, NotChecked=0, Total=3782 [2022-10-16 11:07:24,786 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 63 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 408 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:24,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 676 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 266 Invalid, 0 Unknown, 408 Unchecked, 0.1s Time] [2022-10-16 11:07:24,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3397 states. [2022-10-16 11:07:25,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3397 to 2771. [2022-10-16 11:07:25,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2771 states, 2766 states have (on average 1.2407809110629067) internal successors, (3432), 2770 states have internal predecessors, (3432), 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 11:07:25,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2771 states to 2771 states and 3432 transitions. [2022-10-16 11:07:25,173 INFO L78 Accepts]: Start accepts. Automaton has 2771 states and 3432 transitions. Word has length 39 [2022-10-16 11:07:25,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:25,173 INFO L495 AbstractCegarLoop]: Abstraction has 2771 states and 3432 transitions. [2022-10-16 11:07:25,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.4390243902439024) internal successors, (100), 42 states have internal predecessors, (100), 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 11:07:25,174 INFO L276 IsEmpty]: Start isEmpty. Operand 2771 states and 3432 transitions. [2022-10-16 11:07:25,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-10-16 11:07:25,175 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:25,175 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:25,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-10-16 11:07:25,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-10-16 11:07:25,389 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:07:25,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:25,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1321761445, now seen corresponding path program 2 times [2022-10-16 11:07:25,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:25,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424416138] [2022-10-16 11:07:25,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:25,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:25,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:25,545 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:07:25,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:25,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424416138] [2022-10-16 11:07:25,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424416138] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:07:25,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008795493] [2022-10-16 11:07:25,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 11:07:25,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:25,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:07:25,548 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:07:25,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-10-16 11:07:25,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 11:07:25,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:07:25,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-16 11:07:25,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:07:25,690 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:07:25,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:07:25,837 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:07:25,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008795493] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:07:25,838 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:07:25,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-10-16 11:07:25,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767585881] [2022-10-16 11:07:25,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:07:25,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-10-16 11:07:25,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:25,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-10-16 11:07:25,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2022-10-16 11:07:25,840 INFO L87 Difference]: Start difference. First operand 2771 states and 3432 transitions. Second operand has 24 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 24 states have internal predecessors, (79), 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 11:07:27,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:27,032 INFO L93 Difference]: Finished difference Result 6435 states and 7995 transitions. [2022-10-16 11:07:27,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-10-16 11:07:27,032 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 24 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2022-10-16 11:07:27,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:27,055 INFO L225 Difference]: With dead ends: 6435 [2022-10-16 11:07:27,055 INFO L226 Difference]: Without dead ends: 6434 [2022-10-16 11:07:27,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=332, Invalid=790, Unknown=0, NotChecked=0, Total=1122 [2022-10-16 11:07:27,058 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 306 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:27,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 412 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:07:27,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6434 states. [2022-10-16 11:07:27,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6434 to 6077. [2022-10-16 11:07:27,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6077 states, 6072 states have (on average 1.2361660079051384) internal successors, (7506), 6076 states have internal predecessors, (7506), 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 11:07:27,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6077 states to 6077 states and 7506 transitions. [2022-10-16 11:07:27,901 INFO L78 Accepts]: Start accepts. Automaton has 6077 states and 7506 transitions. Word has length 40 [2022-10-16 11:07:27,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:27,901 INFO L495 AbstractCegarLoop]: Abstraction has 6077 states and 7506 transitions. [2022-10-16 11:07:27,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 24 states have internal predecessors, (79), 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 11:07:27,901 INFO L276 IsEmpty]: Start isEmpty. Operand 6077 states and 7506 transitions. [2022-10-16 11:07:27,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-10-16 11:07:27,902 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:27,902 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:27,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-10-16 11:07:28,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:28,118 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:07:28,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:28,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1690460896, now seen corresponding path program 2 times [2022-10-16 11:07:28,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:28,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373717766] [2022-10-16 11:07:28,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:28,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:28,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:28,684 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:28,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:28,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373717766] [2022-10-16 11:07:28,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373717766] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:07:28,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079733614] [2022-10-16 11:07:28,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 11:07:28,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:28,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:07:28,688 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:07:28,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-10-16 11:07:28,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 11:07:28,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:07:28,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 39 conjunts are in the unsatisfiable core [2022-10-16 11:07:28,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:07:28,813 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-10-16 11:07:29,028 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-16 11:07:29,030 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:29,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:07:29,230 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-10-16 11:07:29,233 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-10-16 11:07:29,346 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:29,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079733614] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:07:29,347 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:07:29,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 30 [2022-10-16 11:07:29,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436817598] [2022-10-16 11:07:29,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:07:29,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-10-16 11:07:29,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:29,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-10-16 11:07:29,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=847, Unknown=0, NotChecked=0, Total=930 [2022-10-16 11:07:29,349 INFO L87 Difference]: Start difference. First operand 6077 states and 7506 transitions. Second operand has 31 states, 30 states have (on average 3.1) internal successors, (93), 31 states have internal predecessors, (93), 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 11:07:32,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:32,129 INFO L93 Difference]: Finished difference Result 9601 states and 11874 transitions. [2022-10-16 11:07:32,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-10-16 11:07:32,130 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 3.1) internal successors, (93), 31 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2022-10-16 11:07:32,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:32,150 INFO L225 Difference]: With dead ends: 9601 [2022-10-16 11:07:32,151 INFO L226 Difference]: Without dead ends: 9600 [2022-10-16 11:07:32,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=337, Invalid=2969, Unknown=0, NotChecked=0, Total=3306 [2022-10-16 11:07:32,156 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 375 mSDsluCounter, 1105 mSDsCounter, 0 mSdLazyCounter, 1391 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 1183 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:32,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 1183 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1391 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-10-16 11:07:32,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9600 states. [2022-10-16 11:07:32,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9600 to 5915. [2022-10-16 11:07:32,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5915 states, 5910 states have (on average 1.22419627749577) internal successors, (7235), 5914 states have internal predecessors, (7235), 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 11:07:32,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5915 states to 5915 states and 7235 transitions. [2022-10-16 11:07:32,883 INFO L78 Accepts]: Start accepts. Automaton has 5915 states and 7235 transitions. Word has length 40 [2022-10-16 11:07:32,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:32,883 INFO L495 AbstractCegarLoop]: Abstraction has 5915 states and 7235 transitions. [2022-10-16 11:07:32,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 3.1) internal successors, (93), 31 states have internal predecessors, (93), 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 11:07:32,883 INFO L276 IsEmpty]: Start isEmpty. Operand 5915 states and 7235 transitions. [2022-10-16 11:07:32,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-10-16 11:07:32,885 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:32,885 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:32,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-10-16 11:07:33,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-10-16 11:07:33,101 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:07:33,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:33,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1486031692, now seen corresponding path program 2 times [2022-10-16 11:07:33,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:33,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397105352] [2022-10-16 11:07:33,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:33,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:33,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:33,295 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:07:33,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:33,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397105352] [2022-10-16 11:07:33,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397105352] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:07:33,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501326273] [2022-10-16 11:07:33,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 11:07:33,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:33,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:07:33,298 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:07:33,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-10-16 11:07:33,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 11:07:33,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:07:33,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-16 11:07:33,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:07:33,433 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:07:33,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:07:33,575 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:07:33,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501326273] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:07:33,576 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:07:33,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-10-16 11:07:33,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898924660] [2022-10-16 11:07:33,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:07:33,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-10-16 11:07:33,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:07:33,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-10-16 11:07:33,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2022-10-16 11:07:33,578 INFO L87 Difference]: Start difference. First operand 5915 states and 7235 transitions. Second operand has 24 states, 23 states have (on average 3.6956521739130435) internal successors, (85), 24 states have internal predecessors, (85), 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 11:07:35,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:07:35,126 INFO L93 Difference]: Finished difference Result 12953 states and 16098 transitions. [2022-10-16 11:07:35,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-10-16 11:07:35,128 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.6956521739130435) internal successors, (85), 24 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-10-16 11:07:35,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:07:35,156 INFO L225 Difference]: With dead ends: 12953 [2022-10-16 11:07:35,157 INFO L226 Difference]: Without dead ends: 12952 [2022-10-16 11:07:35,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=332, Invalid=790, Unknown=0, NotChecked=0, Total=1122 [2022-10-16 11:07:35,162 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 399 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:07:35,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 292 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:07:35,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12952 states. [2022-10-16 11:07:36,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12952 to 12845. [2022-10-16 11:07:36,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12845 states, 12840 states have (on average 1.2172118380062305) internal successors, (15629), 12844 states have internal predecessors, (15629), 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 11:07:36,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12845 states to 12845 states and 15629 transitions. [2022-10-16 11:07:36,626 INFO L78 Accepts]: Start accepts. Automaton has 12845 states and 15629 transitions. Word has length 42 [2022-10-16 11:07:36,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:07:36,627 INFO L495 AbstractCegarLoop]: Abstraction has 12845 states and 15629 transitions. [2022-10-16 11:07:36,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.6956521739130435) internal successors, (85), 24 states have internal predecessors, (85), 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 11:07:36,627 INFO L276 IsEmpty]: Start isEmpty. Operand 12845 states and 15629 transitions. [2022-10-16 11:07:36,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-10-16 11:07:36,628 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:07:36,628 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:07:36,663 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-10-16 11:07:36,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:36,843 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:07:36,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:07:36,844 INFO L85 PathProgramCache]: Analyzing trace with hash -813476612, now seen corresponding path program 5 times [2022-10-16 11:07:36,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:07:36,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136730432] [2022-10-16 11:07:36,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:07:36,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:07:36,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:07:37,512 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:37,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:07:37,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136730432] [2022-10-16 11:07:37,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136730432] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:07:37,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589267270] [2022-10-16 11:07:37,513 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-16 11:07:37,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:07:37,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:07:37,517 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:07:37,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-10-16 11:07:37,586 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-10-16 11:07:37,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:07:37,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 39 conjunts are in the unsatisfiable core [2022-10-16 11:07:37,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:07:37,700 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-10-16 11:07:37,859 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-10-16 11:07:37,860 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-10-16 11:07:38,135 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-10-16 11:07:38,141 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:07:38,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:08:06,058 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2022-10-16 11:08:06,062 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 62 [2022-10-16 11:08:06,118 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:08:06,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589267270] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:08:06,119 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:08:06,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 41 [2022-10-16 11:08:06,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305010954] [2022-10-16 11:08:06,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:08:06,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-10-16 11:08:06,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:08:06,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-10-16 11:08:06,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1562, Unknown=25, NotChecked=0, Total=1722 [2022-10-16 11:08:06,122 INFO L87 Difference]: Start difference. First operand 12845 states and 15629 transitions. Second operand has 42 states, 41 states have (on average 2.731707317073171) internal successors, (112), 42 states have internal predecessors, (112), 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 11:08:10,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:08:10,607 INFO L93 Difference]: Finished difference Result 15596 states and 18841 transitions. [2022-10-16 11:08:10,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-10-16 11:08:10,608 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.731707317073171) internal successors, (112), 42 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-10-16 11:08:10,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:08:10,640 INFO L225 Difference]: With dead ends: 15596 [2022-10-16 11:08:10,640 INFO L226 Difference]: Without dead ends: 15595 [2022-10-16 11:08:10,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 816 ImplicationChecksByTransitivity, 29.7s TimeCoverageRelationStatistics Valid=538, Invalid=4407, Unknown=25, NotChecked=0, Total=4970 [2022-10-16 11:08:10,648 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 603 mSDsluCounter, 1579 mSDsCounter, 0 mSdLazyCounter, 2072 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 2360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 174 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:08:10,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [603 Valid, 1663 Invalid, 2360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2072 Invalid, 0 Unknown, 174 Unchecked, 1.1s Time] [2022-10-16 11:08:10,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15595 states. [2022-10-16 11:08:12,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15595 to 12403. [2022-10-16 11:08:12,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12403 states, 12398 states have (on average 1.2063236005807387) internal successors, (14956), 12402 states have internal predecessors, (14956), 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 11:08:12,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12403 states to 12403 states and 14956 transitions. [2022-10-16 11:08:12,242 INFO L78 Accepts]: Start accepts. Automaton has 12403 states and 14956 transitions. Word has length 43 [2022-10-16 11:08:12,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:08:12,242 INFO L495 AbstractCegarLoop]: Abstraction has 12403 states and 14956 transitions. [2022-10-16 11:08:12,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.731707317073171) internal successors, (112), 42 states have internal predecessors, (112), 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 11:08:12,242 INFO L276 IsEmpty]: Start isEmpty. Operand 12403 states and 14956 transitions. [2022-10-16 11:08:12,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-10-16 11:08:12,245 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:08:12,245 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:08:12,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-10-16 11:08:12,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:08:12,459 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:08:12,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:08:12,460 INFO L85 PathProgramCache]: Analyzing trace with hash 244561798, now seen corresponding path program 3 times [2022-10-16 11:08:12,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:08:12,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987171597] [2022-10-16 11:08:12,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:08:12,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:08:12,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:08:12,719 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 22 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:08:12,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:08:12,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987171597] [2022-10-16 11:08:12,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987171597] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:08:12,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279272983] [2022-10-16 11:08:12,720 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 11:08:12,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:08:12,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:08:12,722 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:08:12,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-10-16 11:08:12,812 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-10-16 11:08:12,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:08:12,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 18 conjunts are in the unsatisfiable core [2022-10-16 11:08:12,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:08:13,035 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 39 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:08:13,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:08:13,221 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 39 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:08:13,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279272983] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:08:13,222 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:08:13,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 28 [2022-10-16 11:08:13,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474289481] [2022-10-16 11:08:13,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:08:13,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-10-16 11:08:13,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:08:13,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-10-16 11:08:13,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2022-10-16 11:08:13,224 INFO L87 Difference]: Start difference. First operand 12403 states and 14956 transitions. Second operand has 28 states, 28 states have (on average 3.142857142857143) internal successors, (88), 28 states have internal predecessors, (88), 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 11:08:15,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:08:15,729 INFO L93 Difference]: Finished difference Result 22790 states and 27591 transitions. [2022-10-16 11:08:15,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-10-16 11:08:15,729 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.142857142857143) internal successors, (88), 28 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-10-16 11:08:15,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:08:15,761 INFO L225 Difference]: With dead ends: 22790 [2022-10-16 11:08:15,761 INFO L226 Difference]: Without dead ends: 17115 [2022-10-16 11:08:15,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 72 SyntacticMatches, 13 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=324, Invalid=1838, Unknown=0, NotChecked=0, Total=2162 [2022-10-16 11:08:15,777 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 403 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 11:08:15,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 527 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 11:08:15,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17115 states. [2022-10-16 11:08:17,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17115 to 14274. [2022-10-16 11:08:17,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14274 states, 14269 states have (on average 1.1970004905739715) internal successors, (17080), 14273 states have internal predecessors, (17080), 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 11:08:17,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14274 states to 14274 states and 17080 transitions. [2022-10-16 11:08:17,730 INFO L78 Accepts]: Start accepts. Automaton has 14274 states and 17080 transitions. Word has length 48 [2022-10-16 11:08:17,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:08:17,731 INFO L495 AbstractCegarLoop]: Abstraction has 14274 states and 17080 transitions. [2022-10-16 11:08:17,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.142857142857143) internal successors, (88), 28 states have internal predecessors, (88), 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 11:08:17,731 INFO L276 IsEmpty]: Start isEmpty. Operand 14274 states and 17080 transitions. [2022-10-16 11:08:17,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-10-16 11:08:17,734 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:08:17,734 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:08:17,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-10-16 11:08:17,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:08:17,949 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:08:17,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:08:17,950 INFO L85 PathProgramCache]: Analyzing trace with hash 272619990, now seen corresponding path program 6 times [2022-10-16 11:08:17,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:08:17,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186282354] [2022-10-16 11:08:17,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:08:17,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:08:17,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:08:18,670 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:08:18,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:08:18,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186282354] [2022-10-16 11:08:18,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186282354] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:08:18,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877796539] [2022-10-16 11:08:18,671 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-10-16 11:08:18,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:08:18,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:08:18,673 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:08:18,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-10-16 11:08:18,750 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-10-16 11:08:18,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:08:18,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 43 conjunts are in the unsatisfiable core [2022-10-16 11:08:18,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:08:18,930 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-10-16 11:08:19,292 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-10-16 11:08:19,296 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:08:19,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:08:19,699 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-10-16 11:08:19,701 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2022-10-16 11:08:19,746 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:08:19,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877796539] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:08:19,746 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:08:19,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 43 [2022-10-16 11:08:19,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057111564] [2022-10-16 11:08:19,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:08:19,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-10-16 11:08:19,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:08:19,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-10-16 11:08:19,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1772, Unknown=0, NotChecked=0, Total=1892 [2022-10-16 11:08:19,749 INFO L87 Difference]: Start difference. First operand 14274 states and 17080 transitions. Second operand has 44 states, 43 states have (on average 3.0697674418604652) internal successors, (132), 44 states have internal predecessors, (132), 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 11:08:26,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:08:26,159 INFO L93 Difference]: Finished difference Result 21883 states and 25992 transitions. [2022-10-16 11:08:26,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-10-16 11:08:26,160 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 3.0697674418604652) internal successors, (132), 44 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-10-16 11:08:26,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:08:26,190 INFO L225 Difference]: With dead ends: 21883 [2022-10-16 11:08:26,190 INFO L226 Difference]: Without dead ends: 21882 [2022-10-16 11:08:26,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 995 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=507, Invalid=5813, Unknown=0, NotChecked=0, Total=6320 [2022-10-16 11:08:26,198 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 588 mSDsluCounter, 2463 mSDsCounter, 0 mSdLazyCounter, 3323 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 2586 SdHoareTripleChecker+Invalid, 3420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 3323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-10-16 11:08:26,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [588 Valid, 2586 Invalid, 3420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 3323 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-10-16 11:08:26,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21882 states. [2022-10-16 11:08:28,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21882 to 14054. [2022-10-16 11:08:28,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14054 states, 14049 states have (on average 1.191472702683465) internal successors, (16739), 14053 states have internal predecessors, (16739), 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 11:08:28,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14054 states to 14054 states and 16739 transitions. [2022-10-16 11:08:28,409 INFO L78 Accepts]: Start accepts. Automaton has 14054 states and 16739 transitions. Word has length 51 [2022-10-16 11:08:28,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:08:28,410 INFO L495 AbstractCegarLoop]: Abstraction has 14054 states and 16739 transitions. [2022-10-16 11:08:28,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 3.0697674418604652) internal successors, (132), 44 states have internal predecessors, (132), 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 11:08:28,410 INFO L276 IsEmpty]: Start isEmpty. Operand 14054 states and 16739 transitions. [2022-10-16 11:08:28,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-10-16 11:08:28,413 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:08:28,413 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:08:28,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-10-16 11:08:28,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:08:28,629 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:08:28,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:08:28,630 INFO L85 PathProgramCache]: Analyzing trace with hash -138761398, now seen corresponding path program 4 times [2022-10-16 11:08:28,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:08:28,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249257756] [2022-10-16 11:08:28,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:08:28,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:08:28,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:08:29,364 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:08:29,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:08:29,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249257756] [2022-10-16 11:08:29,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249257756] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:08:29,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408540288] [2022-10-16 11:08:29,365 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 11:08:29,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:08:29,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:08:29,366 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:08:29,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-10-16 11:08:29,442 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 11:08:29,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:08:29,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 43 conjunts are in the unsatisfiable core [2022-10-16 11:08:29,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:08:29,597 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-10-16 11:08:29,958 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-10-16 11:08:29,963 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:08:29,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:08:30,343 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-10-16 11:08:30,346 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-10-16 11:08:30,382 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:08:30,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408540288] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:08:30,382 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:08:30,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 43 [2022-10-16 11:08:30,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816865221] [2022-10-16 11:08:30,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:08:30,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-10-16 11:08:30,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:08:30,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-10-16 11:08:30,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1772, Unknown=0, NotChecked=0, Total=1892 [2022-10-16 11:08:30,385 INFO L87 Difference]: Start difference. First operand 14054 states and 16739 transitions. Second operand has 44 states, 43 states have (on average 3.1627906976744184) internal successors, (136), 44 states have internal predecessors, (136), 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 11:08:36,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:08:36,480 INFO L93 Difference]: Finished difference Result 23394 states and 27859 transitions. [2022-10-16 11:08:36,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-10-16 11:08:36,481 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 3.1627906976744184) internal successors, (136), 44 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-10-16 11:08:36,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:08:36,510 INFO L225 Difference]: With dead ends: 23394 [2022-10-16 11:08:36,510 INFO L226 Difference]: Without dead ends: 23393 [2022-10-16 11:08:36,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1045 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=507, Invalid=5973, Unknown=0, NotChecked=0, Total=6480 [2022-10-16 11:08:36,519 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 513 mSDsluCounter, 2005 mSDsCounter, 0 mSdLazyCounter, 2579 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 2116 SdHoareTripleChecker+Invalid, 2654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 2579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-10-16 11:08:36,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 2116 Invalid, 2654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 2579 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-10-16 11:08:36,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23393 states. [2022-10-16 11:08:38,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23393 to 13474. [2022-10-16 11:08:38,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13474 states, 13469 states have (on average 1.1736580295493355) internal successors, (15808), 13473 states have internal predecessors, (15808), 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 11:08:38,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13474 states to 13474 states and 15808 transitions. [2022-10-16 11:08:38,617 INFO L78 Accepts]: Start accepts. Automaton has 13474 states and 15808 transitions. Word has length 52 [2022-10-16 11:08:38,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:08:38,617 INFO L495 AbstractCegarLoop]: Abstraction has 13474 states and 15808 transitions. [2022-10-16 11:08:38,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 3.1627906976744184) internal successors, (136), 44 states have internal predecessors, (136), 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 11:08:38,618 INFO L276 IsEmpty]: Start isEmpty. Operand 13474 states and 15808 transitions. [2022-10-16 11:08:38,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-10-16 11:08:38,622 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:08:38,622 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:08:38,653 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-10-16 11:08:38,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-10-16 11:08:38,837 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:08:38,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:08:38,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1618928816, now seen corresponding path program 7 times [2022-10-16 11:08:38,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:08:38,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299725676] [2022-10-16 11:08:38,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:08:38,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:08:38,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:08:39,180 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 35 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:08:39,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:08:39,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299725676] [2022-10-16 11:08:39,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299725676] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:08:39,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443821170] [2022-10-16 11:08:39,181 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-10-16 11:08:39,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:08:39,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:08:39,183 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:08:39,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-10-16 11:08:39,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:08:39,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 22 conjunts are in the unsatisfiable core [2022-10-16 11:08:39,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:08:39,569 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 60 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:08:39,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:08:39,823 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 60 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:08:39,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443821170] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:08:39,823 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:08:39,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 34 [2022-10-16 11:08:39,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590068404] [2022-10-16 11:08:39,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:08:39,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-10-16 11:08:39,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:08:39,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-10-16 11:08:39,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=971, Unknown=0, NotChecked=0, Total=1122 [2022-10-16 11:08:39,826 INFO L87 Difference]: Start difference. First operand 13474 states and 15808 transitions. Second operand has 34 states, 34 states have (on average 3.1470588235294117) internal successors, (107), 34 states have internal predecessors, (107), 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 11:08:43,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:08:43,825 INFO L93 Difference]: Finished difference Result 25404 states and 29797 transitions. [2022-10-16 11:08:43,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-10-16 11:08:43,826 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.1470588235294117) internal successors, (107), 34 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-10-16 11:08:43,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:08:43,848 INFO L225 Difference]: With dead ends: 25404 [2022-10-16 11:08:43,848 INFO L226 Difference]: Without dead ends: 22201 [2022-10-16 11:08:43,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 88 SyntacticMatches, 17 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1289 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=528, Invalid=3254, Unknown=0, NotChecked=0, Total=3782 [2022-10-16 11:08:43,858 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 761 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 11:08:43,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 674 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 11:08:43,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22201 states. [2022-10-16 11:08:46,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22201 to 15393. [2022-10-16 11:08:46,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15393 states, 15388 states have (on average 1.1692227709903822) internal successors, (17992), 15392 states have internal predecessors, (17992), 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 11:08:46,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15393 states to 15393 states and 17992 transitions. [2022-10-16 11:08:46,227 INFO L78 Accepts]: Start accepts. Automaton has 15393 states and 17992 transitions. Word has length 59 [2022-10-16 11:08:46,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:08:46,227 INFO L495 AbstractCegarLoop]: Abstraction has 15393 states and 17992 transitions. [2022-10-16 11:08:46,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.1470588235294117) internal successors, (107), 34 states have internal predecessors, (107), 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 11:08:46,227 INFO L276 IsEmpty]: Start isEmpty. Operand 15393 states and 17992 transitions. [2022-10-16 11:08:46,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-10-16 11:08:46,232 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:08:46,232 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:08:46,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-10-16 11:08:46,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-10-16 11:08:46,448 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:08:46,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:08:46,448 INFO L85 PathProgramCache]: Analyzing trace with hash -409686420, now seen corresponding path program 8 times [2022-10-16 11:08:46,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:08:46,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057608193] [2022-10-16 11:08:46,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:08:46,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:08:46,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:08:47,384 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:08:47,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:08:47,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057608193] [2022-10-16 11:08:47,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057608193] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:08:47,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949472089] [2022-10-16 11:08:47,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 11:08:47,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:08:47,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:08:47,389 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:08:47,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-10-16 11:08:47,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 11:08:47,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:08:47,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 51 conjunts are in the unsatisfiable core [2022-10-16 11:08:47,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:08:47,717 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-10-16 11:08:48,255 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-10-16 11:08:48,262 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:08:48,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:08:48,882 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-10-16 11:08:48,885 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2022-10-16 11:08:48,936 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:08:48,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949472089] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:08:48,936 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:08:48,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21, 21] total 53 [2022-10-16 11:08:48,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716671358] [2022-10-16 11:08:48,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:08:48,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-10-16 11:08:48,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:08:48,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-10-16 11:08:48,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=2716, Unknown=0, NotChecked=0, Total=2862 [2022-10-16 11:08:48,940 INFO L87 Difference]: Start difference. First operand 15393 states and 17992 transitions. Second operand has 54 states, 53 states have (on average 3.0943396226415096) internal successors, (164), 54 states have internal predecessors, (164), 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 11:09:00,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:09:00,516 INFO L93 Difference]: Finished difference Result 34004 states and 40099 transitions. [2022-10-16 11:09:00,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-10-16 11:09:00,516 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 3.0943396226415096) internal successors, (164), 54 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-10-16 11:09:00,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:09:00,550 INFO L225 Difference]: With dead ends: 34004 [2022-10-16 11:09:00,550 INFO L226 Difference]: Without dead ends: 34003 [2022-10-16 11:09:00,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1552 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=642, Invalid=9258, Unknown=0, NotChecked=0, Total=9900 [2022-10-16 11:09:00,559 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 577 mSDsluCounter, 4522 mSDsCounter, 0 mSdLazyCounter, 6267 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 4680 SdHoareTripleChecker+Invalid, 6362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 6267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-10-16 11:09:00,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 4680 Invalid, 6362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 6267 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-10-16 11:09:00,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34003 states. [2022-10-16 11:09:03,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34003 to 15899. [2022-10-16 11:09:03,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15899 states, 15894 states have (on average 1.17144834528753) internal successors, (18619), 15898 states have internal predecessors, (18619), 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 11:09:03,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15899 states to 15899 states and 18619 transitions. [2022-10-16 11:09:03,288 INFO L78 Accepts]: Start accepts. Automaton has 15899 states and 18619 transitions. Word has length 63 [2022-10-16 11:09:03,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:09:03,289 INFO L495 AbstractCegarLoop]: Abstraction has 15899 states and 18619 transitions. [2022-10-16 11:09:03,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 3.0943396226415096) internal successors, (164), 54 states have internal predecessors, (164), 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 11:09:03,289 INFO L276 IsEmpty]: Start isEmpty. Operand 15899 states and 18619 transitions. [2022-10-16 11:09:03,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-10-16 11:09:03,294 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:09:03,294 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:09:03,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-10-16 11:09:03,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-10-16 11:09:03,510 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:09:03,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:09:03,511 INFO L85 PathProgramCache]: Analyzing trace with hash 184576372, now seen corresponding path program 5 times [2022-10-16 11:09:03,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:09:03,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544437722] [2022-10-16 11:09:03,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:09:03,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:09:03,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:09:04,394 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:09:04,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:09:04,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544437722] [2022-10-16 11:09:04,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544437722] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:09:04,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941366982] [2022-10-16 11:09:04,395 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-16 11:09:04,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:09:04,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:09:04,397 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:09:04,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-10-16 11:09:04,483 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-10-16 11:09:04,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:09:04,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 51 conjunts are in the unsatisfiable core [2022-10-16 11:09:04,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:09:04,743 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-10-16 11:09:05,269 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-10-16 11:09:05,272 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:09:05,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:09:05,875 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-10-16 11:09:05,878 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-10-16 11:09:05,926 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:09:05,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941366982] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:09:05,927 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:09:05,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21, 21] total 53 [2022-10-16 11:09:05,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973083644] [2022-10-16 11:09:05,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:09:05,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-10-16 11:09:05,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:09:05,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-10-16 11:09:05,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=2716, Unknown=0, NotChecked=0, Total=2862 [2022-10-16 11:09:05,929 INFO L87 Difference]: Start difference. First operand 15899 states and 18619 transitions. Second operand has 54 states, 53 states have (on average 3.169811320754717) internal successors, (168), 54 states have internal predecessors, (168), 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 11:09:16,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:09:16,043 INFO L93 Difference]: Finished difference Result 31400 states and 37040 transitions. [2022-10-16 11:09:16,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-10-16 11:09:16,043 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 3.169811320754717) internal successors, (168), 54 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-10-16 11:09:16,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:09:16,076 INFO L225 Difference]: With dead ends: 31400 [2022-10-16 11:09:16,076 INFO L226 Difference]: Without dead ends: 31399 [2022-10-16 11:09:16,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1616 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=640, Invalid=9460, Unknown=0, NotChecked=0, Total=10100 [2022-10-16 11:09:16,084 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 525 mSDsluCounter, 3824 mSDsCounter, 0 mSdLazyCounter, 4769 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 3967 SdHoareTripleChecker+Invalid, 4849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 4769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-10-16 11:09:16,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 3967 Invalid, 4849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 4769 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-10-16 11:09:16,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31399 states. [2022-10-16 11:09:18,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31399 to 15682. [2022-10-16 11:09:18,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15682 states, 15677 states have (on average 1.166868661095873) internal successors, (18293), 15681 states have internal predecessors, (18293), 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 11:09:18,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15682 states to 15682 states and 18293 transitions. [2022-10-16 11:09:18,769 INFO L78 Accepts]: Start accepts. Automaton has 15682 states and 18293 transitions. Word has length 64 [2022-10-16 11:09:18,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:09:18,769 INFO L495 AbstractCegarLoop]: Abstraction has 15682 states and 18293 transitions. [2022-10-16 11:09:18,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 3.169811320754717) internal successors, (168), 54 states have internal predecessors, (168), 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 11:09:18,770 INFO L276 IsEmpty]: Start isEmpty. Operand 15682 states and 18293 transitions. [2022-10-16 11:09:18,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-10-16 11:09:18,775 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:09:18,776 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:09:18,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-10-16 11:09:18,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:09:18,990 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:09:18,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:09:18,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1426898733, now seen corresponding path program 2 times [2022-10-16 11:09:18,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:09:18,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176217855] [2022-10-16 11:09:18,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:09:18,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:09:19,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:09:19,133 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-10-16 11:09:19,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:09:19,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176217855] [2022-10-16 11:09:19,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176217855] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:09:19,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585422662] [2022-10-16 11:09:19,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 11:09:19,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:09:19,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:09:19,136 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:09:19,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-10-16 11:09:19,203 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-16 11:09:19,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:09:19,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-16 11:09:19,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:09:19,306 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-10-16 11:09:19,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:09:19,402 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-10-16 11:09:19,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585422662] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:09:19,402 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:09:19,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 15 [2022-10-16 11:09:19,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734062710] [2022-10-16 11:09:19,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:09:19,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-16 11:09:19,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:09:19,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-16 11:09:19,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-10-16 11:09:19,405 INFO L87 Difference]: Start difference. First operand 15682 states and 18293 transitions. Second operand has 16 states, 15 states have (on average 4.866666666666666) internal successors, (73), 16 states have internal predecessors, (73), 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 11:09:23,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:09:23,668 INFO L93 Difference]: Finished difference Result 23694 states and 27499 transitions. [2022-10-16 11:09:23,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-16 11:09:23,670 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.866666666666666) internal successors, (73), 16 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-10-16 11:09:23,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:09:23,693 INFO L225 Difference]: With dead ends: 23694 [2022-10-16 11:09:23,693 INFO L226 Difference]: Without dead ends: 23693 [2022-10-16 11:09:23,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 122 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=237, Invalid=575, Unknown=0, NotChecked=0, Total=812 [2022-10-16 11:09:23,698 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 359 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:09:23,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 106 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:09:23,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23693 states. [2022-10-16 11:09:26,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23693 to 15681. [2022-10-16 11:09:26,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15681 states, 15677 states have (on average 1.159150347643044) internal successors, (18172), 15680 states have internal predecessors, (18172), 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 11:09:26,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15681 states to 15681 states and 18172 transitions. [2022-10-16 11:09:26,261 INFO L78 Accepts]: Start accepts. Automaton has 15681 states and 18172 transitions. Word has length 65 [2022-10-16 11:09:26,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:09:26,262 INFO L495 AbstractCegarLoop]: Abstraction has 15681 states and 18172 transitions. [2022-10-16 11:09:26,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.866666666666666) internal successors, (73), 16 states have internal predecessors, (73), 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 11:09:26,262 INFO L276 IsEmpty]: Start isEmpty. Operand 15681 states and 18172 transitions. [2022-10-16 11:09:26,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-10-16 11:09:26,267 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:09:26,267 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:09:26,289 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-10-16 11:09:26,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-10-16 11:09:26,468 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:09:26,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:09:26,469 INFO L85 PathProgramCache]: Analyzing trace with hash 802734918, now seen corresponding path program 9 times [2022-10-16 11:09:26,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:09:26,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767882522] [2022-10-16 11:09:26,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:09:26,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:09:26,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:09:26,894 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 62 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:09:26,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:09:26,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767882522] [2022-10-16 11:09:26,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767882522] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:09:26,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402432975] [2022-10-16 11:09:26,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 11:09:26,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:09:26,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:09:26,898 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:09:26,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-10-16 11:09:27,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-10-16 11:09:27,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:09:27,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 26 conjunts are in the unsatisfiable core [2022-10-16 11:09:27,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:09:27,459 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 95 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:09:27,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:09:27,806 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 95 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:09:27,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402432975] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:09:27,807 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:09:27,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 40 [2022-10-16 11:09:27,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460267641] [2022-10-16 11:09:27,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:09:27,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-10-16 11:09:27,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:09:27,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-10-16 11:09:27,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=1357, Unknown=0, NotChecked=0, Total=1560 [2022-10-16 11:09:27,809 INFO L87 Difference]: Start difference. First operand 15681 states and 18172 transitions. Second operand has 40 states, 40 states have (on average 3.175) internal successors, (127), 40 states have internal predecessors, (127), 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 11:09:34,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:09:34,244 INFO L93 Difference]: Finished difference Result 33493 states and 38718 transitions. [2022-10-16 11:09:34,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-10-16 11:09:34,244 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.175) internal successors, (127), 40 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-10-16 11:09:34,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:09:34,274 INFO L225 Difference]: With dead ends: 33493 [2022-10-16 11:09:34,275 INFO L226 Difference]: Without dead ends: 30291 [2022-10-16 11:09:34,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 106 SyntacticMatches, 21 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2187 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=818, Invalid=5344, Unknown=0, NotChecked=0, Total=6162 [2022-10-16 11:09:34,284 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 863 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 11:09:34,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 856 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 842 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-16 11:09:34,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30291 states. [2022-10-16 11:09:37,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30291 to 17600. [2022-10-16 11:09:37,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17600 states, 17596 states have (on average 1.1568538304160036) internal successors, (20356), 17599 states have internal predecessors, (20356), 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 11:09:37,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17600 states to 17600 states and 20356 transitions. [2022-10-16 11:09:37,695 INFO L78 Accepts]: Start accepts. Automaton has 17600 states and 20356 transitions. Word has length 71 [2022-10-16 11:09:37,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:09:37,696 INFO L495 AbstractCegarLoop]: Abstraction has 17600 states and 20356 transitions. [2022-10-16 11:09:37,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.175) internal successors, (127), 40 states have internal predecessors, (127), 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 11:09:37,696 INFO L276 IsEmpty]: Start isEmpty. Operand 17600 states and 20356 transitions. [2022-10-16 11:09:37,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-10-16 11:09:37,702 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:09:37,702 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:09:37,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-10-16 11:09:37,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-10-16 11:09:37,903 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:09:37,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:09:37,904 INFO L85 PathProgramCache]: Analyzing trace with hash -943598846, now seen corresponding path program 10 times [2022-10-16 11:09:37,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:09:37,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357325732] [2022-10-16 11:09:37,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:09:37,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:09:37,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:09:39,137 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:09:39,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:09:39,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357325732] [2022-10-16 11:09:39,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357325732] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:09:39,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486411472] [2022-10-16 11:09:39,138 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 11:09:39,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:09:39,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:09:39,140 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:09:39,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-10-16 11:09:39,226 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 11:09:39,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:09:39,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 59 conjunts are in the unsatisfiable core [2022-10-16 11:09:39,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:09:39,599 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-10-16 11:09:40,359 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-10-16 11:09:40,362 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:09:40,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:09:41,217 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-10-16 11:09:41,219 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2022-10-16 11:09:41,281 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:09:41,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486411472] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:09:41,282 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:09:41,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25, 25] total 63 [2022-10-16 11:09:41,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606540387] [2022-10-16 11:09:41,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:09:41,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-10-16 11:09:41,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:09:41,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-10-16 11:09:41,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=3860, Unknown=0, NotChecked=0, Total=4032 [2022-10-16 11:09:41,284 INFO L87 Difference]: Start difference. First operand 17600 states and 20356 transitions. Second operand has 64 states, 63 states have (on average 3.111111111111111) internal successors, (196), 64 states have internal predecessors, (196), 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 11:10:00,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:10:00,909 INFO L93 Difference]: Finished difference Result 49315 states and 57411 transitions. [2022-10-16 11:10:00,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-10-16 11:10:00,909 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 3.111111111111111) internal successors, (196), 64 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-10-16 11:10:00,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:10:00,963 INFO L225 Difference]: With dead ends: 49315 [2022-10-16 11:10:00,963 INFO L226 Difference]: Without dead ends: 49314 [2022-10-16 11:10:00,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2233 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=777, Invalid=13503, Unknown=0, NotChecked=0, Total=14280 [2022-10-16 11:10:00,973 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 713 mSDsluCounter, 7003 mSDsCounter, 0 mSdLazyCounter, 9787 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 7196 SdHoareTripleChecker+Invalid, 9902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 9787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:10:00,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 7196 Invalid, 9902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 9787 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-10-16 11:10:01,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49314 states. [2022-10-16 11:10:05,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49314 to 19731. [2022-10-16 11:10:05,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19731 states, 19727 states have (on average 1.1588178638414357) internal successors, (22860), 19730 states have internal predecessors, (22860), 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 11:10:05,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19731 states to 19731 states and 22860 transitions. [2022-10-16 11:10:05,212 INFO L78 Accepts]: Start accepts. Automaton has 19731 states and 22860 transitions. Word has length 75 [2022-10-16 11:10:05,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:10:05,213 INFO L495 AbstractCegarLoop]: Abstraction has 19731 states and 22860 transitions. [2022-10-16 11:10:05,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 3.111111111111111) internal successors, (196), 64 states have internal predecessors, (196), 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 11:10:05,213 INFO L276 IsEmpty]: Start isEmpty. Operand 19731 states and 22860 transitions. [2022-10-16 11:10:05,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-10-16 11:10:05,218 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:10:05,218 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:10:05,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-10-16 11:10:05,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-10-16 11:10:05,419 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:10:05,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:10:05,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1178202789, now seen corresponding path program 3 times [2022-10-16 11:10:05,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:10:05,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949803184] [2022-10-16 11:10:05,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:10:05,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:10:05,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:10:05,867 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:10:05,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:10:05,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949803184] [2022-10-16 11:10:05,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949803184] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:10:05,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254656282] [2022-10-16 11:10:05,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 11:10:05,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:10:05,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:10:05,871 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:10:05,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-10-16 11:10:06,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-10-16 11:10:06,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:10:06,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 23 conjunts are in the unsatisfiable core [2022-10-16 11:10:06,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:10:06,178 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:10:06,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:10:06,683 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:10:06,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254656282] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:10:06,684 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:10:06,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2022-10-16 11:10:06,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145470011] [2022-10-16 11:10:06,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:10:06,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-10-16 11:10:06,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:10:06,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-10-16 11:10:06,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2022-10-16 11:10:06,687 INFO L87 Difference]: Start difference. First operand 19731 states and 22860 transitions. Second operand has 48 states, 47 states have (on average 3.2127659574468086) internal successors, (151), 48 states have internal predecessors, (151), 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 11:10:16,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:10:16,511 INFO L93 Difference]: Finished difference Result 42869 states and 50477 transitions. [2022-10-16 11:10:16,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-10-16 11:10:16,512 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 3.2127659574468086) internal successors, (151), 48 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-10-16 11:10:16,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:10:16,548 INFO L225 Difference]: With dead ends: 42869 [2022-10-16 11:10:16,549 INFO L226 Difference]: Without dead ends: 42868 [2022-10-16 11:10:16,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1048 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1382, Invalid=3448, Unknown=0, NotChecked=0, Total=4830 [2022-10-16 11:10:16,555 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 1085 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:10:16,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1085 Valid, 611 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:10:16,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42868 states. [2022-10-16 11:10:24,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42868 to 41271. [2022-10-16 11:10:24,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41271 states, 41267 states have (on average 1.1561780599510505) internal successors, (47712), 41270 states have internal predecessors, (47712), 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 11:10:24,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41271 states to 41271 states and 47712 transitions. [2022-10-16 11:10:24,675 INFO L78 Accepts]: Start accepts. Automaton has 41271 states and 47712 transitions. Word has length 76 [2022-10-16 11:10:24,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:10:24,675 INFO L495 AbstractCegarLoop]: Abstraction has 41271 states and 47712 transitions. [2022-10-16 11:10:24,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 3.2127659574468086) internal successors, (151), 48 states have internal predecessors, (151), 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 11:10:24,675 INFO L276 IsEmpty]: Start isEmpty. Operand 41271 states and 47712 transitions. [2022-10-16 11:10:24,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-10-16 11:10:24,683 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:10:24,683 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:10:24,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-10-16 11:10:24,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:10:24,890 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:10:24,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:10:24,891 INFO L85 PathProgramCache]: Analyzing trace with hash 813160350, now seen corresponding path program 6 times [2022-10-16 11:10:24,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:10:24,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133705932] [2022-10-16 11:10:24,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:10:24,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:10:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:10:26,062 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:10:26,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:10:26,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133705932] [2022-10-16 11:10:26,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133705932] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:10:26,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297858934] [2022-10-16 11:10:26,063 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-10-16 11:10:26,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:10:26,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:10:26,065 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:10:26,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-10-16 11:10:26,241 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-10-16 11:10:26,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:10:26,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 43 conjunts are in the unsatisfiable core [2022-10-16 11:10:26,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:10:26,601 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-10-16 11:10:28,146 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-10-16 11:10:28,146 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-10-16 11:10:28,150 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 85 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:10:28,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:10:30,002 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-10-16 11:10:30,005 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 24 [2022-10-16 11:10:30,366 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 80 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:10:30,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297858934] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:10:30,367 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:10:30,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 29, 29] total 71 [2022-10-16 11:10:30,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477384948] [2022-10-16 11:10:30,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:10:30,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-10-16 11:10:30,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:10:30,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-10-16 11:10:30,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=340, Invalid=4772, Unknown=0, NotChecked=0, Total=5112 [2022-10-16 11:10:30,370 INFO L87 Difference]: Start difference. First operand 41271 states and 47712 transitions. Second operand has 72 states, 71 states have (on average 2.816901408450704) internal successors, (200), 72 states have internal predecessors, (200), 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 11:10:42,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:10:42,713 INFO L93 Difference]: Finished difference Result 54290 states and 62591 transitions. [2022-10-16 11:10:42,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-10-16 11:10:42,713 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 2.816901408450704) internal successors, (200), 72 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-10-16 11:10:42,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:10:42,763 INFO L225 Difference]: With dead ends: 54290 [2022-10-16 11:10:42,763 INFO L226 Difference]: Without dead ends: 54289 [2022-10-16 11:10:42,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 103 SyntacticMatches, 11 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2148 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=735, Invalid=10395, Unknown=0, NotChecked=0, Total=11130 [2022-10-16 11:10:42,771 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 64 mSDsluCounter, 1328 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 1367 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 344 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 11:10:42,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 1367 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 614 Invalid, 0 Unknown, 344 Unchecked, 0.3s Time] [2022-10-16 11:10:42,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54289 states. [2022-10-16 11:10:50,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54289 to 41328. [2022-10-16 11:10:50,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41328 states, 41324 states have (on average 1.1563014229019457) internal successors, (47783), 41327 states have internal predecessors, (47783), 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 11:10:50,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41328 states to 41328 states and 47783 transitions. [2022-10-16 11:10:50,731 INFO L78 Accepts]: Start accepts. Automaton has 41328 states and 47783 transitions. Word has length 76 [2022-10-16 11:10:50,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:10:50,731 INFO L495 AbstractCegarLoop]: Abstraction has 41328 states and 47783 transitions. [2022-10-16 11:10:50,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 2.816901408450704) internal successors, (200), 72 states have internal predecessors, (200), 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 11:10:50,731 INFO L276 IsEmpty]: Start isEmpty. Operand 41328 states and 47783 transitions. [2022-10-16 11:10:50,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-10-16 11:10:50,738 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:10:50,738 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:10:50,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-10-16 11:10:50,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-10-16 11:10:50,950 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-10-16 11:10:50,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:10:50,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1527750934, now seen corresponding path program 3 times [2022-10-16 11:10:50,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:10:50,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576761057] [2022-10-16 11:10:50,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:10:50,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:10:50,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:10:51,341 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:10:51,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:10:51,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576761057] [2022-10-16 11:10:51,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576761057] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:10:51,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004502497] [2022-10-16 11:10:51,342 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 11:10:51,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:10:51,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:10:51,344 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:10:51,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-10-16 11:10:51,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-10-16 11:10:51,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:10:51,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 23 conjunts are in the unsatisfiable core [2022-10-16 11:10:51,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:10:51,637 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:10:51,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:10:52,167 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:10:52,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004502497] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:10:52,168 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:10:52,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2022-10-16 11:10:52,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154719159] [2022-10-16 11:10:52,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:10:52,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-10-16 11:10:52,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:10:52,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-10-16 11:10:52,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2022-10-16 11:10:52,170 INFO L87 Difference]: Start difference. First operand 41328 states and 47783 transitions. Second operand has 48 states, 47 states have (on average 3.3404255319148937) internal successors, (157), 48 states have internal predecessors, (157), 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)