/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/cstrncpy_unsafe.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 11:08:29,654 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 11:08:29,657 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 11:08:29,700 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-10-16 11:08:29,717 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 11:08:29,719 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 11:08:29,720 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 11:08:29,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 11:08:29,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 11:08:29,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 11:08:29,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 11:08:29,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 11:08:29,732 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 11:08:29,736 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 11:08:29,760 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 11:08:29,761 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 11:08:29,766 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-16 11:08:29,779 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 11:08:29,780 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 11:08:29,781 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 11:08:29,782 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 11:08:29,839 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 11:08:29,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 11:08:29,840 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 11:08:29,840 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 11:08:29,842 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 11:08:29,843 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 11:08:29,846 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 11:08:29,846 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 11:08:29,846 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 11:08:29,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 11:08:29,848 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 11:08:29,848 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 11:08:29,848 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 11:08:29,848 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 11:08:29,848 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 11:08:29,849 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 11:08:29,849 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 11:08:29,849 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 11:08:29,849 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 11:08:29,849 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 11:08:29,849 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 11:08:29,850 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 11:08:29,850 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 11:08:29,850 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 11:08:29,850 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 11:08:29,851 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 11:08:29,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 11:08:29,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 11:08:29,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 11:08:29,851 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 11:08:29,852 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 11:08:29,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 11:08:29,852 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 11:08:29,853 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 11:08:30,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 11:08:30,315 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 11:08:30,318 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 11:08:30,319 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 11:08:30,320 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 11:08:30,322 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c [2022-10-16 11:08:30,394 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdad219b2/eb1fcaecaa684da2beeccffa95f3ab1e/FLAG9636fe13d [2022-10-16 11:08:31,056 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 11:08:31,057 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c [2022-10-16 11:08:31,065 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdad219b2/eb1fcaecaa684da2beeccffa95f3ab1e/FLAG9636fe13d [2022-10-16 11:08:31,424 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdad219b2/eb1fcaecaa684da2beeccffa95f3ab1e [2022-10-16 11:08:31,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 11:08:31,434 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 11:08:31,436 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 11:08:31,436 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 11:08:31,440 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 11:08:31,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:08:31" (1/1) ... [2022-10-16 11:08:31,442 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79350946 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:08:31, skipping insertion in model container [2022-10-16 11:08:31,442 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:08:31" (1/1) ... [2022-10-16 11:08:31,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 11:08:31,464 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 11:08:31,627 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 11:08:31,640 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 11:08:31,660 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 11:08:31,677 INFO L208 MainTranslator]: Completed translation [2022-10-16 11:08:31,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:08:31 WrapperNode [2022-10-16 11:08:31,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 11:08:31,684 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 11:08:31,688 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 11:08:31,689 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 11:08:31,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:08:31" (1/1) ... [2022-10-16 11:08:31,708 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:08:31" (1/1) ... [2022-10-16 11:08:31,745 INFO L138 Inliner]: procedures = 8, calls = 6, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 62 [2022-10-16 11:08:31,745 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 11:08:31,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 11:08:31,747 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 11:08:31,747 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 11:08:31,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:08:31" (1/1) ... [2022-10-16 11:08:31,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:08:31" (1/1) ... [2022-10-16 11:08:31,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:08:31" (1/1) ... [2022-10-16 11:08:31,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:08:31" (1/1) ... [2022-10-16 11:08:31,784 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:08:31" (1/1) ... [2022-10-16 11:08:31,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:08:31" (1/1) ... [2022-10-16 11:08:31,794 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:08:31" (1/1) ... [2022-10-16 11:08:31,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:08:31" (1/1) ... [2022-10-16 11:08:31,810 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 11:08:31,811 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 11:08:31,811 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 11:08:31,811 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 11:08:31,812 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:08:31" (1/1) ... [2022-10-16 11:08:31,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 11:08:31,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:08:31,867 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 11:08:31,891 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 11:08:31,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 11:08:31,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 11:08:31,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 11:08:31,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 11:08:32,075 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 11:08:32,078 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 11:08:32,339 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 11:08:32,347 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 11:08:32,348 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-16 11:08:32,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:08:32 BoogieIcfgContainer [2022-10-16 11:08:32,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 11:08:32,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 11:08:32,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 11:08:32,358 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 11:08:32,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:08:31" (1/3) ... [2022-10-16 11:08:32,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca7d1db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:08:32, skipping insertion in model container [2022-10-16 11:08:32,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:08:31" (2/3) ... [2022-10-16 11:08:32,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca7d1db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:08:32, skipping insertion in model container [2022-10-16 11:08:32,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:08:32" (3/3) ... [2022-10-16 11:08:32,362 INFO L112 eAbstractionObserver]: Analyzing ICFG cstrncpy_unsafe.c [2022-10-16 11:08:32,389 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 11:08:32,389 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-10-16 11:08:32,487 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 11:08:32,520 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;@395384b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 11:08:32,521 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-10-16 11:08:32,539 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 18 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 11:08:32,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-16 11:08:32,549 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:08:32,551 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-16 11:08:32,552 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-10-16 11:08:32,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:08:32,561 INFO L85 PathProgramCache]: Analyzing trace with hash 925796, now seen corresponding path program 1 times [2022-10-16 11:08:32,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:08:32,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931280025] [2022-10-16 11:08:32,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:08:32,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:08:32,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:08:32,987 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 11:08:32,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:08:32,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931280025] [2022-10-16 11:08:32,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931280025] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:08:32,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:08:32,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:08:32,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918719096] [2022-10-16 11:08:32,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:08:32,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:08:32,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:08:33,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:08:33,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:08:33,034 INFO L87 Difference]: Start difference. First operand has 19 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 18 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) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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 11:08:33,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:08:33,084 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2022-10-16 11:08:33,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:08:33,094 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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 4 [2022-10-16 11:08:33,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:08:33,107 INFO L225 Difference]: With dead ends: 24 [2022-10-16 11:08:33,107 INFO L226 Difference]: Without dead ends: 13 [2022-10-16 11:08:33,111 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 11:08:33,116 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 19 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:08:33,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 28 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:08:33,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-10-16 11:08:33,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-10-16 11:08:33,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 10 states have (on average 1.4) internal successors, (14), 12 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 11:08:33,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2022-10-16 11:08:33,156 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 4 [2022-10-16 11:08:33,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:08:33,156 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2022-10-16 11:08:33,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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 11:08:33,157 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2022-10-16 11:08:33,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-16 11:08:33,157 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:08:33,158 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-16 11:08:33,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 11:08:33,159 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-10-16 11:08:33,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:08:33,159 INFO L85 PathProgramCache]: Analyzing trace with hash 28699721, now seen corresponding path program 1 times [2022-10-16 11:08:33,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:08:33,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797424414] [2022-10-16 11:08:33,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:08:33,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:08:33,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:08:33,215 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 11:08:33,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:08:33,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797424414] [2022-10-16 11:08:33,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797424414] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:08:33,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:08:33,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 11:08:33,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414651728] [2022-10-16 11:08:33,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:08:33,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 11:08:33,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:08:33,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 11:08:33,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 11:08:33,222 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 11:08:33,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:08:33,244 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2022-10-16 11:08:33,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 11:08:33,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2022-10-16 11:08:33,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:08:33,248 INFO L225 Difference]: With dead ends: 13 [2022-10-16 11:08:33,248 INFO L226 Difference]: Without dead ends: 12 [2022-10-16 11:08:33,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 11:08:33,252 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:08:33,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:08:33,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-10-16 11:08:33,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-10-16 11:08:33,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 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 11:08:33,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2022-10-16 11:08:33,262 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 5 [2022-10-16 11:08:33,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:08:33,263 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2022-10-16 11:08:33,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 11:08:33,263 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2022-10-16 11:08:33,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-16 11:08:33,265 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:08:33,265 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:08:33,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 11:08:33,266 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-10-16 11:08:33,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:08:33,272 INFO L85 PathProgramCache]: Analyzing trace with hash 294944233, now seen corresponding path program 1 times [2022-10-16 11:08:33,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:08:33,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820437253] [2022-10-16 11:08:33,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:08:33,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:08:33,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:08:33,526 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 11:08:33,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:08:33,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820437253] [2022-10-16 11:08:33,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820437253] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:08:33,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:08:33,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-16 11:08:33,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284581950] [2022-10-16 11:08:33,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:08:33,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 11:08:33,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:08:33,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 11:08:33,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-16 11:08:33,531 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 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 11:08:33,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:08:33,615 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2022-10-16 11:08:33,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 11:08:33,615 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 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 8 [2022-10-16 11:08:33,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:08:33,616 INFO L225 Difference]: With dead ends: 15 [2022-10-16 11:08:33,616 INFO L226 Difference]: Without dead ends: 14 [2022-10-16 11:08:33,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-10-16 11:08:33,619 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 19 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:08:33,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 10 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:08:33,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-10-16 11:08:33,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 11. [2022-10-16 11:08:33,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 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 11:08:33,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2022-10-16 11:08:33,634 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2022-10-16 11:08:33,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:08:33,635 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2022-10-16 11:08:33,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 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 11:08:33,635 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2022-10-16 11:08:33,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-16 11:08:33,636 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:08:33,636 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:08:33,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-16 11:08:33,637 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-10-16 11:08:33,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:08:33,637 INFO L85 PathProgramCache]: Analyzing trace with hash 553336688, now seen corresponding path program 1 times [2022-10-16 11:08:33,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:08:33,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103122587] [2022-10-16 11:08:33,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:08:33,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:08:33,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:08:33,747 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 11:08:33,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:08:33,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103122587] [2022-10-16 11:08:33,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103122587] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:08:33,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:08:33,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-16 11:08:33,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151003239] [2022-10-16 11:08:33,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:08:33,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 11:08:33,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:08:33,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 11:08:33,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-16 11:08:33,750 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:08:33,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:08:33,833 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2022-10-16 11:08:33,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 11:08:33,833 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-10-16 11:08:33,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:08:33,834 INFO L225 Difference]: With dead ends: 17 [2022-10-16 11:08:33,834 INFO L226 Difference]: Without dead ends: 16 [2022-10-16 11:08:33,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-10-16 11:08:33,839 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 12 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:08:33,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 17 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:08:33,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-10-16 11:08:33,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2022-10-16 11:08:33,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 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 11:08:33,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-10-16 11:08:33,855 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2022-10-16 11:08:33,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:08:33,856 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-10-16 11:08:33,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:08:33,856 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-10-16 11:08:33,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-16 11:08:33,858 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:08:33,858 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:08:33,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-16 11:08:33,859 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-10-16 11:08:33,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:08:33,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1450507191, now seen corresponding path program 1 times [2022-10-16 11:08:33,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:08:33,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216142101] [2022-10-16 11:08:33,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:08:33,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:08:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:08:34,094 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 11:08:34,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:08:34,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216142101] [2022-10-16 11:08:34,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216142101] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:08:34,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503056380] [2022-10-16 11:08:34,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:08:34,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:08:34,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:08:34,104 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 11:08:34,107 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 11:08:34,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:08:34,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-16 11:08:34,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:08:34,313 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 11:08:34,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:08:34,416 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 11:08:34,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503056380] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:08:34,417 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:08:34,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-10-16 11:08:34,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839550722] [2022-10-16 11:08:34,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:08:34,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-16 11:08:34,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:08:34,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-16 11:08:34,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-10-16 11:08:34,421 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 14 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 11:08:34,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:08:34,681 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2022-10-16 11:08:34,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-16 11:08:34,681 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 14 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 13 [2022-10-16 11:08:34,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:08:34,683 INFO L225 Difference]: With dead ends: 28 [2022-10-16 11:08:34,683 INFO L226 Difference]: Without dead ends: 27 [2022-10-16 11:08:34,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=189, Invalid=513, Unknown=0, NotChecked=0, Total=702 [2022-10-16 11:08:34,686 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 27 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:08:34,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 28 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:08:34,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-10-16 11:08:34,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2022-10-16 11:08:34,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 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 11:08:34,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2022-10-16 11:08:34,695 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 13 [2022-10-16 11:08:34,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:08:34,696 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2022-10-16 11:08:34,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 14 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 11:08:34,697 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2022-10-16 11:08:34,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-10-16 11:08:34,699 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:08:34,699 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:08:34,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-16 11:08:34,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:08:34,917 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-10-16 11:08:34,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:08:34,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1832048596, now seen corresponding path program 2 times [2022-10-16 11:08:34,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:08:34,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122968072] [2022-10-16 11:08:34,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:08:34,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:08:35,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:08:35,341 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 11:08:35,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:08:35,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122968072] [2022-10-16 11:08:35,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122968072] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:08:35,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679825229] [2022-10-16 11:08:35,343 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 11:08:35,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:08:35,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:08:35,345 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 11:08:35,358 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 11:08:35,427 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 11:08:35,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:08:35,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 14 conjunts are in the unsatisfiable core [2022-10-16 11:08:35,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:08:35,549 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 11:08:35,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:08:35,791 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 11:08:35,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679825229] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:08:35,792 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:08:35,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-10-16 11:08:35,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123714323] [2022-10-16 11:08:35,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:08:35,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-10-16 11:08:35,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:08:35,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-10-16 11:08:35,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2022-10-16 11:08:35,795 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 26 states, 25 states have (on average 1.92) internal successors, (48), 26 states have internal predecessors, (48), 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 11:08:36,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:08:36,497 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2022-10-16 11:08:36,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-10-16 11:08:36,498 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.92) internal successors, (48), 26 states have internal predecessors, (48), 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 11:08:36,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:08:36,500 INFO L225 Difference]: With dead ends: 52 [2022-10-16 11:08:36,500 INFO L226 Difference]: Without dead ends: 51 [2022-10-16 11:08:36,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 732 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=867, Invalid=2325, Unknown=0, NotChecked=0, Total=3192 [2022-10-16 11:08:36,504 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 75 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:08:36,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 28 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:08:36,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-10-16 11:08:36,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2022-10-16 11:08:36,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.0408163265306123) internal successors, (51), 49 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 11:08:36,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2022-10-16 11:08:36,520 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 25 [2022-10-16 11:08:36,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:08:36,520 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2022-10-16 11:08:36,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.92) internal successors, (48), 26 states have internal predecessors, (48), 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 11:08:36,521 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2022-10-16 11:08:36,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-10-16 11:08:36,523 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:08:36,523 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:08:36,573 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 11:08:36,737 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,SelfDestructingSolverStorable5 [2022-10-16 11:08:36,738 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-10-16 11:08:36,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:08:36,740 INFO L85 PathProgramCache]: Analyzing trace with hash 36918634, now seen corresponding path program 3 times [2022-10-16 11:08:36,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:08:36,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127290295] [2022-10-16 11:08:36,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:08:36,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:08:36,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:08:37,551 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:08:37,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:08:37,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127290295] [2022-10-16 11:08:37,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127290295] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:08:37,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979704840] [2022-10-16 11:08:37,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 11:08:37,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:08:37,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:08:37,554 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 11:08:37,579 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 11:08:37,740 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-10-16 11:08:37,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:08:37,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 26 conjunts are in the unsatisfiable core [2022-10-16 11:08:37,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:08:37,870 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:08:37,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:08:38,523 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:08:38,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979704840] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:08:38,523 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:08:38,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2022-10-16 11:08:38,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114745127] [2022-10-16 11:08:38,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:08:38,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-10-16 11:08:38,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:08:38,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-10-16 11:08:38,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=1889, Unknown=0, NotChecked=0, Total=2450 [2022-10-16 11:08:38,528 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand has 50 states, 49 states have (on average 1.9591836734693877) internal successors, (96), 50 states have internal predecessors, (96), 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 11:08:40,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:08:40,675 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2022-10-16 11:08:40,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-10-16 11:08:40,676 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 1.9591836734693877) internal successors, (96), 50 states have internal predecessors, (96), 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 49 [2022-10-16 11:08:40,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:08:40,678 INFO L225 Difference]: With dead ends: 100 [2022-10-16 11:08:40,678 INFO L226 Difference]: Without dead ends: 99 [2022-10-16 11:08:40,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3561 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=3735, Invalid=9837, Unknown=0, NotChecked=0, Total=13572 [2022-10-16 11:08:40,687 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 262 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 11:08:40,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 30 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 11:08:40,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-10-16 11:08:40,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2022-10-16 11:08:40,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.0206185567010309) internal successors, (99), 97 states have internal predecessors, (99), 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 11:08:40,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 99 transitions. [2022-10-16 11:08:40,707 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 99 transitions. Word has length 49 [2022-10-16 11:08:40,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:08:40,708 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 99 transitions. [2022-10-16 11:08:40,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 1.9591836734693877) internal successors, (96), 50 states have internal predecessors, (96), 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 11:08:40,709 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 99 transitions. [2022-10-16 11:08:40,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-10-16 11:08:40,713 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:08:40,713 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:08:40,760 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 11:08:40,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:08:40,928 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-10-16 11:08:40,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:08:40,930 INFO L85 PathProgramCache]: Analyzing trace with hash 552381078, now seen corresponding path program 4 times [2022-10-16 11:08:40,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:08:40,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211141144] [2022-10-16 11:08:40,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:08:40,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:08:41,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:08:43,350 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:08:43,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:08:43,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211141144] [2022-10-16 11:08:43,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211141144] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:08:43,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643715863] [2022-10-16 11:08:43,352 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 11:08:43,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:08:43,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:08:43,356 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 11:08:43,374 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 11:08:44,150 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 11:08:44,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:08:44,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 50 conjunts are in the unsatisfiable core [2022-10-16 11:08:44,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:08:44,344 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:08:44,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:08:46,523 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:08:46,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643715863] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:08:46,524 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:08:46,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2022-10-16 11:08:46,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796153007] [2022-10-16 11:08:46,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:08:46,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-10-16 11:08:46,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:08:46,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-10-16 11:08:46,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2265, Invalid=7241, Unknown=0, NotChecked=0, Total=9506 [2022-10-16 11:08:46,533 INFO L87 Difference]: Start difference. First operand 98 states and 99 transitions. Second operand has 98 states, 97 states have (on average 1.9793814432989691) internal successors, (192), 98 states have internal predecessors, (192), 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 11:08:54,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:08:54,602 INFO L93 Difference]: Finished difference Result 196 states and 220 transitions. [2022-10-16 11:08:54,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2022-10-16 11:08:54,603 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 97 states have (on average 1.9793814432989691) internal successors, (192), 98 states have internal predecessors, (192), 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 97 [2022-10-16 11:08:54,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:08:54,606 INFO L225 Difference]: With dead ends: 196 [2022-10-16 11:08:54,606 INFO L226 Difference]: Without dead ends: 195 [2022-10-16 11:08:54,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15591 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=15519, Invalid=40413, Unknown=0, NotChecked=0, Total=55932 [2022-10-16 11:08:54,622 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 495 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-16 11:08:54,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 39 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-16 11:08:54,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-10-16 11:08:54,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 194. [2022-10-16 11:08:54,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 1.0103626943005182) internal successors, (195), 193 states have internal predecessors, (195), 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 11:08:54,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 195 transitions. [2022-10-16 11:08:54,653 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 195 transitions. Word has length 97 [2022-10-16 11:08:54,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:08:54,654 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 195 transitions. [2022-10-16 11:08:54,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 97 states have (on average 1.9793814432989691) internal successors, (192), 98 states have internal predecessors, (192), 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 11:08:54,654 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 195 transitions. [2022-10-16 11:08:54,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-10-16 11:08:54,658 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:08:54,658 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:08:54,699 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 11:08:54,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:08:54,872 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-10-16 11:08:54,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:08:54,873 INFO L85 PathProgramCache]: Analyzing trace with hash -538395410, now seen corresponding path program 5 times [2022-10-16 11:08:54,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:08:54,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258686809] [2022-10-16 11:08:54,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:08:54,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:08:55,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:09:02,004 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:09:02,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:09:02,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258686809] [2022-10-16 11:09:02,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258686809] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:09:02,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10238908] [2022-10-16 11:09:02,006 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-16 11:09:02,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:09:02,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:09:02,007 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 11:09:02,008 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 11:09:46,236 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2022-10-16 11:09:46,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:09:46,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 98 conjunts are in the unsatisfiable core [2022-10-16 11:09:46,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:09:46,620 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:09:46,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:09:55,488 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:09:55,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10238908] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:09:55,489 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:09:55,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 193 [2022-10-16 11:09:55,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946844800] [2022-10-16 11:09:55,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:09:55,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 194 states [2022-10-16 11:09:55,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:09:55,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2022-10-16 11:09:55,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9129, Invalid=28313, Unknown=0, NotChecked=0, Total=37442 [2022-10-16 11:09:55,498 INFO L87 Difference]: Start difference. First operand 194 states and 195 transitions. Second operand has 194 states, 193 states have (on average 1.9896373056994818) internal successors, (384), 194 states have internal predecessors, (384), 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 11:10:27,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:10:27,171 INFO L93 Difference]: Finished difference Result 388 states and 436 transitions. [2022-10-16 11:10:27,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 286 states. [2022-10-16 11:10:27,172 INFO L78 Accepts]: Start accepts. Automaton has has 194 states, 193 states have (on average 1.9896373056994818) internal successors, (384), 194 states have internal predecessors, (384), 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 193 [2022-10-16 11:10:27,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:10:27,175 INFO L225 Difference]: With dead ends: 388 [2022-10-16 11:10:27,175 INFO L226 Difference]: Without dead ends: 387 [2022-10-16 11:10:27,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 764 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 475 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65139 ImplicationChecksByTransitivity, 41.0s TimeCoverageRelationStatistics Valid=63279, Invalid=163773, Unknown=0, NotChecked=0, Total=227052 [2022-10-16 11:10:27,193 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 1084 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 883 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 1612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 883 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-10-16 11:10:27,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1084 Valid, 55 Invalid, 1612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [883 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-10-16 11:10:27,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2022-10-16 11:10:27,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 386. [2022-10-16 11:10:27,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 1.0051948051948052) internal successors, (387), 385 states have internal predecessors, (387), 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 11:10:27,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 387 transitions. [2022-10-16 11:10:27,230 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 387 transitions. Word has length 193 [2022-10-16 11:10:27,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:10:27,230 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 387 transitions. [2022-10-16 11:10:27,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 194 states, 193 states have (on average 1.9896373056994818) internal successors, (384), 194 states have internal predecessors, (384), 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 11:10:27,231 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 387 transitions. [2022-10-16 11:10:27,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2022-10-16 11:10:27,238 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:10:27,238 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 94, 94, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:10:27,277 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 11:10:27,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:10:27,440 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-10-16 11:10:27,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:10:27,441 INFO L85 PathProgramCache]: Analyzing trace with hash -918126178, now seen corresponding path program 6 times [2022-10-16 11:10:27,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:10:27,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200790773] [2022-10-16 11:10:27,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:10:27,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:10:27,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:10:51,760 INFO L134 CoverageAnalysis]: Checked inductivity of 17766 backedges. 0 proven. 17766 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:10:51,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:10:51,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200790773] [2022-10-16 11:10:51,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200790773] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:10:51,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939038488] [2022-10-16 11:10:51,761 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-10-16 11:10:51,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:10:51,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:10:51,767 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 11:10:51,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process