/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/loop-new/gauss_sum.i.p+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 21:42:55,588 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 21:42:55,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 21:42:55,626 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-10-15 21:42:55,724 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 21:42:55,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 21:42:55,726 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 21:42:55,727 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 [2022-10-15 21:42:55,788 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 21:42:55,788 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 21:42:55,789 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 21:42:55,789 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 21:42:55,790 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 21:42:55,791 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 21:42:55,793 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 21:42:55,794 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 21:42:55,794 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 21:42:55,795 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 21:42:55,796 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 21:42:55,796 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 21:42:55,796 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 21:42:55,796 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 21:42:55,797 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 21:42:55,797 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-15 21:42:55,797 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 21:42:55,797 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-15 21:42:55,797 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-15 21:42:55,798 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 21:42:55,798 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-15 21:42:55,798 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 21:42:55,798 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-15 21:42:55,799 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 21:42:55,799 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 21:42:55,799 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 21:42:55,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 21:42:55,799 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 21:42:55,800 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 21:42:55,800 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-15 21:42:55,800 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 21:42:55,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 21:42:55,801 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-15 21:42:55,801 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 21:42:56,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 21:42:56,316 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 21:42:56,319 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 21:42:56,320 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 21:42:56,321 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 21:42:56,323 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-new/gauss_sum.i.p+cfa-reducer.c [2022-10-15 21:42:56,394 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a86fb23c/efb0be52888c4101b5d0c248fa322507/FLAGc4fc75879 [2022-10-15 21:42:56,993 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 21:42:56,994 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-new/gauss_sum.i.p+cfa-reducer.c [2022-10-15 21:42:57,002 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a86fb23c/efb0be52888c4101b5d0c248fa322507/FLAGc4fc75879 [2022-10-15 21:42:57,029 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a86fb23c/efb0be52888c4101b5d0c248fa322507 [2022-10-15 21:42:57,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 21:42:57,040 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 21:42:57,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 21:42:57,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 21:42:57,048 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 21:42:57,049 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 09:42:57" (1/1) ... [2022-10-15 21:42:57,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c978ee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:42:57, skipping insertion in model container [2022-10-15 21:42:57,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 09:42:57" (1/1) ... [2022-10-15 21:42:57,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 21:42:57,082 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 21:42:57,281 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-new/gauss_sum.i.p+cfa-reducer.c[1014,1027] [2022-10-15 21:42:57,283 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 21:42:57,295 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 21:42:57,316 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-new/gauss_sum.i.p+cfa-reducer.c[1014,1027] [2022-10-15 21:42:57,317 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 21:42:57,335 INFO L208 MainTranslator]: Completed translation [2022-10-15 21:42:57,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:42:57 WrapperNode [2022-10-15 21:42:57,336 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 21:42:57,337 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 21:42:57,338 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 21:42:57,338 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 21:42:57,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:42:57" (1/1) ... [2022-10-15 21:42:57,356 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:42:57" (1/1) ... [2022-10-15 21:42:57,378 INFO L138 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 52 [2022-10-15 21:42:57,379 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 21:42:57,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 21:42:57,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 21:42:57,380 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 21:42:57,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:42:57" (1/1) ... [2022-10-15 21:42:57,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:42:57" (1/1) ... [2022-10-15 21:42:57,395 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:42:57" (1/1) ... [2022-10-15 21:42:57,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:42:57" (1/1) ... [2022-10-15 21:42:57,399 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:42:57" (1/1) ... [2022-10-15 21:42:57,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:42:57" (1/1) ... [2022-10-15 21:42:57,402 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:42:57" (1/1) ... [2022-10-15 21:42:57,403 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:42:57" (1/1) ... [2022-10-15 21:42:57,405 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 21:42:57,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 21:42:57,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 21:42:57,406 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 21:42:57,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:42:57" (1/1) ... [2022-10-15 21:42:57,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 21:42:57,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:42:57,448 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) [2022-10-15 21:42:57,469 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 [2022-10-15 21:42:57,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 21:42:57,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 21:42:57,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 21:42:57,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 21:42:57,581 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 21:42:57,584 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 21:42:57,868 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 21:42:57,881 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 21:42:57,885 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-15 21:42:57,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 09:42:57 BoogieIcfgContainer [2022-10-15 21:42:57,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 21:42:57,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 21:42:57,900 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 21:42:57,907 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 21:42:57,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 09:42:57" (1/3) ... [2022-10-15 21:42:57,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3706e7b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 09:42:57, skipping insertion in model container [2022-10-15 21:42:57,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:42:57" (2/3) ... [2022-10-15 21:42:57,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3706e7b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 09:42:57, skipping insertion in model container [2022-10-15 21:42:57,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 09:42:57" (3/3) ... [2022-10-15 21:42:57,914 INFO L112 eAbstractionObserver]: Analyzing ICFG gauss_sum.i.p+cfa-reducer.c [2022-10-15 21:42:57,959 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 21:42:57,960 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-10-15 21:42:58,025 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 21:42:58,035 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;@35f35080, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 21:42:58,036 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-10-15 21:42:58,041 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 28 states have internal predecessors, (32), 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) [2022-10-15 21:42:58,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-15 21:42:58,048 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:42:58,049 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-15 21:42:58,050 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:42:58,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:42:58,057 INFO L85 PathProgramCache]: Analyzing trace with hash 889571305, now seen corresponding path program 1 times [2022-10-15 21:42:58,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:42:58,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823886694] [2022-10-15 21:42:58,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:42:58,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:42:58,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:42:58,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:42:58,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:42:58,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823886694] [2022-10-15 21:42:58,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823886694] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:42:58,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:42:58,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 21:42:58,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867959946] [2022-10-15 21:42:58,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:42:58,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 21:42:58,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:42:58,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 21:42:58,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 21:42:58,414 INFO L87 Difference]: Start difference. First operand has 29 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 28 states have internal predecessors, (32), 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 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-10-15 21:42:58,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:42:58,484 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2022-10-15 21:42:58,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 21:42:58,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-10-15 21:42:58,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:42:58,496 INFO L225 Difference]: With dead ends: 52 [2022-10-15 21:42:58,497 INFO L226 Difference]: Without dead ends: 34 [2022-10-15 21:42:58,500 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 [2022-10-15 21:42:58,505 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 14 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 21:42:58,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 38 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 21:42:58,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-10-15 21:42:58,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2022-10-15 21:42:58,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 27 states have internal predecessors, (29), 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) [2022-10-15 21:42:58,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2022-10-15 21:42:58,545 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2022-10-15 21:42:58,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:42:58,546 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2022-10-15 21:42:58,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-10-15 21:42:58,546 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2022-10-15 21:42:58,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-15 21:42:58,547 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:42:58,547 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:42:58,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 21:42:58,548 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:42:58,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:42:58,549 INFO L85 PathProgramCache]: Analyzing trace with hash 179533803, now seen corresponding path program 1 times [2022-10-15 21:42:58,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:42:58,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286417992] [2022-10-15 21:42:58,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:42:58,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:42:58,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:42:58,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:42:58,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:42:58,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286417992] [2022-10-15 21:42:58,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286417992] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:42:58,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:42:58,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 21:42:58,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804810131] [2022-10-15 21:42:58,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:42:58,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 21:42:58,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:42:58,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 21:42:58,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 21:42:58,620 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2022-10-15 21:42:58,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:42:58,671 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2022-10-15 21:42:58,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 21:42:58,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 [2022-10-15 21:42:58,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:42:58,675 INFO L225 Difference]: With dead ends: 38 [2022-10-15 21:42:58,678 INFO L226 Difference]: Without dead ends: 36 [2022-10-15 21:42:58,678 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 [2022-10-15 21:42:58,681 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 9 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 21:42:58,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 28 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 21:42:58,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-10-15 21:42:58,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2022-10-15 21:42:58,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 29 states have internal predecessors, (31), 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) [2022-10-15 21:42:58,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2022-10-15 21:42:58,695 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 8 [2022-10-15 21:42:58,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:42:58,697 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2022-10-15 21:42:58,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2022-10-15 21:42:58,697 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2022-10-15 21:42:58,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-15 21:42:58,699 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:42:58,699 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:42:58,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 21:42:58,700 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:42:58,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:42:58,702 INFO L85 PathProgramCache]: Analyzing trace with hash 179841643, now seen corresponding path program 1 times [2022-10-15 21:42:58,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:42:58,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93125005] [2022-10-15 21:42:58,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:42:58,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:42:58,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:42:58,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:42:58,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:42:58,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93125005] [2022-10-15 21:42:58,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93125005] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:42:58,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:42:58,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 21:42:58,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583129633] [2022-10-15 21:42:58,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:42:58,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:42:58,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:42:58,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:42:58,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:42:58,830 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2022-10-15 21:42:58,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:42:58,874 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2022-10-15 21:42:58,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 21:42:58,875 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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 [2022-10-15 21:42:58,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:42:58,876 INFO L225 Difference]: With dead ends: 35 [2022-10-15 21:42:58,876 INFO L226 Difference]: Without dead ends: 27 [2022-10-15 21:42:58,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:42:58,878 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 23 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 21:42:58,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 17 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 21:42:58,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-10-15 21:42:58,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-10-15 21:42:58,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 26 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) [2022-10-15 21:42:58,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2022-10-15 21:42:58,885 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 8 [2022-10-15 21:42:58,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:42:58,886 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2022-10-15 21:42:58,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2022-10-15 21:42:58,886 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2022-10-15 21:42:58,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-15 21:42:58,887 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:42:58,887 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:42:58,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 21:42:58,888 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:42:58,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:42:58,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1257295021, now seen corresponding path program 1 times [2022-10-15 21:42:58,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:42:58,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120449281] [2022-10-15 21:42:58,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:42:58,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:42:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:42:59,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:42:59,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:42:59,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120449281] [2022-10-15 21:42:59,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120449281] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:42:59,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763161622] [2022-10-15 21:42:59,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:42:59,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:42:59,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:42:59,084 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) [2022-10-15 21:42:59,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-15 21:42:59,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:42:59,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-15 21:42:59,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:42:59,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:42:59,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:42:59,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:42:59,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763161622] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:42:59,338 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:42:59,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2022-10-15 21:42:59,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511288587] [2022-10-15 21:42:59,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:42:59,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-15 21:42:59,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:42:59,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-15 21:42:59,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=60, Unknown=0, NotChecked=0, Total=110 [2022-10-15 21:42:59,344 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 11 states, 10 states have (on average 2.7) internal successors, (27), 11 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) [2022-10-15 21:42:59,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:42:59,556 INFO L93 Difference]: Finished difference Result 56 states and 57 transitions. [2022-10-15 21:42:59,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-15 21:42:59,557 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.7) internal successors, (27), 11 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) Word has length 11 [2022-10-15 21:42:59,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:42:59,561 INFO L225 Difference]: With dead ends: 56 [2022-10-15 21:42:59,562 INFO L226 Difference]: Without dead ends: 54 [2022-10-15 21:42:59,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=84, Unknown=0, NotChecked=0, Total=156 [2022-10-15 21:42:59,572 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 54 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 21:42:59,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 39 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 21:42:59,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-10-15 21:42:59,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 35. [2022-10-15 21:42:59,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 34 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:42:59,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2022-10-15 21:42:59,589 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 11 [2022-10-15 21:42:59,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:42:59,589 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2022-10-15 21:42:59,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.7) internal successors, (27), 11 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) [2022-10-15 21:42:59,590 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2022-10-15 21:42:59,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-15 21:42:59,590 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:42:59,591 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:42:59,618 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-10-15 21:42:59,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:42:59,798 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:42:59,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:42:59,800 INFO L85 PathProgramCache]: Analyzing trace with hash 321440037, now seen corresponding path program 1 times [2022-10-15 21:42:59,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:42:59,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862575477] [2022-10-15 21:42:59,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:42:59,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:42:59,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:42:59,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:42:59,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:42:59,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862575477] [2022-10-15 21:42:59,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862575477] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:42:59,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082904826] [2022-10-15 21:42:59,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:42:59,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:42:59,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:42:59,894 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) [2022-10-15 21:42:59,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-15 21:42:59,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:42:59,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-15 21:42:59,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:43:00,016 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:43:00,016 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 21:43:00,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082904826] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:43:00,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 21:43:00,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2022-10-15 21:43:00,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258679769] [2022-10-15 21:43:00,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:43:00,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:43:00,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:43:00,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:43:00,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-10-15 21:43:00,020 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 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) [2022-10-15 21:43:00,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:43:00,069 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2022-10-15 21:43:00,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 21:43:00,070 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-10-15 21:43:00,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:43:00,071 INFO L225 Difference]: With dead ends: 35 [2022-10-15 21:43:00,071 INFO L226 Difference]: Without dead ends: 32 [2022-10-15 21:43:00,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-10-15 21:43:00,073 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 23 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 21:43:00,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 14 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 21:43:00,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-10-15 21:43:00,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-10-15 21:43:00,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 31 states have internal predecessors, (35), 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) [2022-10-15 21:43:00,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2022-10-15 21:43:00,080 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 12 [2022-10-15 21:43:00,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:43:00,081 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2022-10-15 21:43:00,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 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) [2022-10-15 21:43:00,081 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2022-10-15 21:43:00,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-15 21:43:00,082 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:43:00,082 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:43:00,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-15 21:43:00,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:43:00,297 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:43:00,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:43:00,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1374706607, now seen corresponding path program 1 times [2022-10-15 21:43:00,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:43:00,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435695771] [2022-10-15 21:43:00,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:43:00,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:43:00,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:43:00,364 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:43:00,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:43:00,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435695771] [2022-10-15 21:43:00,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435695771] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:43:00,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242841693] [2022-10-15 21:43:00,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:43:00,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:43:00,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:43:00,366 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) [2022-10-15 21:43:00,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-15 21:43:00,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:43:00,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-15 21:43:00,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:43:00,439 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:43:00,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:43:00,465 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:43:00,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242841693] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:43:00,466 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:43:00,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-10-15 21:43:00,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959359892] [2022-10-15 21:43:00,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:43:00,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-15 21:43:00,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:43:00,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-15 21:43:00,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-10-15 21:43:00,468 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 7 states have internal predecessors, (29), 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) [2022-10-15 21:43:00,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:43:00,512 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2022-10-15 21:43:00,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 21:43:00,513 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 7 states have internal predecessors, (29), 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 [2022-10-15 21:43:00,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:43:00,514 INFO L225 Difference]: With dead ends: 63 [2022-10-15 21:43:00,514 INFO L226 Difference]: Without dead ends: 62 [2022-10-15 21:43:00,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-10-15 21:43:00,515 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 52 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 21:43:00,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 44 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 21:43:00,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-10-15 21:43:00,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 39. [2022-10-15 21:43:00,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 38 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:43:00,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2022-10-15 21:43:00,523 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 13 [2022-10-15 21:43:00,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:43:00,523 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2022-10-15 21:43:00,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 7 states have internal predecessors, (29), 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) [2022-10-15 21:43:00,524 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2022-10-15 21:43:00,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-15 21:43:00,525 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:43:00,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:43:00,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-15 21:43:00,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:43:00,740 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:43:00,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:43:00,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1375014447, now seen corresponding path program 1 times [2022-10-15 21:43:00,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:43:00,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877725673] [2022-10-15 21:43:00,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:43:00,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:43:00,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:43:00,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 21:43:00,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:43:00,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877725673] [2022-10-15 21:43:00,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877725673] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:43:00,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:43:00,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 21:43:00,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710655154] [2022-10-15 21:43:00,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:43:00,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 21:43:00,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:43:00,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 21:43:00,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 21:43:00,787 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 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) [2022-10-15 21:43:00,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:43:00,838 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2022-10-15 21:43:00,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 21:43:00,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 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) Word has length 13 [2022-10-15 21:43:00,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:43:00,840 INFO L225 Difference]: With dead ends: 39 [2022-10-15 21:43:00,841 INFO L226 Difference]: Without dead ends: 38 [2022-10-15 21:43:00,841 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 [2022-10-15 21:43:00,842 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 21:43:00,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 14 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 21:43:00,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-10-15 21:43:00,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-10-15 21:43:00,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 37 states have internal predecessors, (42), 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) [2022-10-15 21:43:00,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2022-10-15 21:43:00,849 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 13 [2022-10-15 21:43:00,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:43:00,849 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2022-10-15 21:43:00,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 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) [2022-10-15 21:43:00,851 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2022-10-15 21:43:00,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-15 21:43:00,852 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:43:00,852 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:43:00,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-15 21:43:00,853 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:43:00,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:43:00,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1461041551, now seen corresponding path program 1 times [2022-10-15 21:43:00,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:43:00,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653782491] [2022-10-15 21:43:00,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:43:00,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:43:00,875 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-15 21:43:00,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2072871474] [2022-10-15 21:43:00,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:43:00,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:43:00,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:43:00,880 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) [2022-10-15 21:43:00,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-15 21:43:00,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:43:00,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-15 21:43:00,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:43:00,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 21:43:00,971 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 21:43:00,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:43:00,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653782491] [2022-10-15 21:43:00,971 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-15 21:43:00,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072871474] [2022-10-15 21:43:00,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072871474] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:43:00,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:43:00,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 21:43:00,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968452480] [2022-10-15 21:43:00,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:43:00,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:43:00,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:43:00,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:43:00,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:43:00,974 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 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) [2022-10-15 21:43:00,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:43:00,985 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2022-10-15 21:43:00,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 21:43:00,985 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 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) Word has length 15 [2022-10-15 21:43:00,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:43:00,988 INFO L225 Difference]: With dead ends: 38 [2022-10-15 21:43:00,988 INFO L226 Difference]: Without dead ends: 32 [2022-10-15 21:43:00,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:43:00,990 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 17 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 21:43:00,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 13 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 21:43:00,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-10-15 21:43:01,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-10-15 21:43:01,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 29 states have (on average 1.206896551724138) internal successors, (35), 31 states have internal predecessors, (35), 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) [2022-10-15 21:43:01,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2022-10-15 21:43:01,008 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 15 [2022-10-15 21:43:01,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:43:01,008 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2022-10-15 21:43:01,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 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) [2022-10-15 21:43:01,010 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2022-10-15 21:43:01,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-15 21:43:01,011 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:43:01,011 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-10-15 21:43:01,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-15 21:43:01,225 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 [2022-10-15 21:43:01,226 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:43:01,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:43:01,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1371415465, now seen corresponding path program 1 times [2022-10-15 21:43:01,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:43:01,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597371977] [2022-10-15 21:43:01,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:43:01,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:43:01,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:43:01,312 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:43:01,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:43:01,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597371977] [2022-10-15 21:43:01,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597371977] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:43:01,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092947328] [2022-10-15 21:43:01,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:43:01,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:43:01,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:43:01,314 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) [2022-10-15 21:43:01,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-15 21:43:01,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:43:01,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-15 21:43:01,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:43:01,432 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:43:01,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:43:01,506 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:43:01,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092947328] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:43:01,507 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:43:01,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2022-10-15 21:43:01,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573514504] [2022-10-15 21:43:01,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:43:01,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-15 21:43:01,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:43:01,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-15 21:43:01,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=91, Unknown=0, NotChecked=0, Total=156 [2022-10-15 21:43:01,510 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 13 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:43:01,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:43:01,623 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2022-10-15 21:43:01,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 21:43:01,624 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-10-15 21:43:01,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:43:01,625 INFO L225 Difference]: With dead ends: 36 [2022-10-15 21:43:01,625 INFO L226 Difference]: Without dead ends: 33 [2022-10-15 21:43:01,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=121, Unknown=0, NotChecked=0, Total=210 [2022-10-15 21:43:01,626 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 22 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 21:43:01,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 30 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 21:43:01,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-10-15 21:43:01,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2022-10-15 21:43:01,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 31 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:43:01,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2022-10-15 21:43:01,631 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 16 [2022-10-15 21:43:01,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:43:01,632 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2022-10-15 21:43:01,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:43:01,632 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2022-10-15 21:43:01,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-10-15 21:43:01,633 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:43:01,633 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2022-10-15 21:43:01,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-15 21:43:01,846 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 [2022-10-15 21:43:01,847 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:43:01,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:43:01,848 INFO L85 PathProgramCache]: Analyzing trace with hash -808648147, now seen corresponding path program 2 times [2022-10-15 21:43:01,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:43:01,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618412100] [2022-10-15 21:43:01,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:43:01,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:43:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:43:02,010 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:43:02,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:43:02,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618412100] [2022-10-15 21:43:02,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618412100] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:43:02,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372996023] [2022-10-15 21:43:02,011 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 21:43:02,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:43:02,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:43:02,019 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) [2022-10-15 21:43:02,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-15 21:43:02,079 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 21:43:02,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 21:43:02,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-15 21:43:02,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:43:02,297 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:43:02,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:43:02,470 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:43:02,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372996023] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:43:02,471 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:43:02,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 23 [2022-10-15 21:43:02,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716020100] [2022-10-15 21:43:02,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:43:02,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-10-15 21:43:02,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:43:02,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-10-15 21:43:02,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2022-10-15 21:43:02,476 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 24 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 24 states have internal predecessors, (57), 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) [2022-10-15 21:43:02,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:43:02,990 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2022-10-15 21:43:02,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-10-15 21:43:02,991 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 24 states have internal predecessors, (57), 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 21 [2022-10-15 21:43:02,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:43:02,991 INFO L225 Difference]: With dead ends: 55 [2022-10-15 21:43:02,991 INFO L226 Difference]: Without dead ends: 54 [2022-10-15 21:43:02,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=400, Invalid=932, Unknown=0, NotChecked=0, Total=1332 [2022-10-15 21:43:02,993 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 88 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 21:43:02,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 28 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 21:43:02,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-10-15 21:43:03,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 45. [2022-10-15 21:43:03,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 42 states have (on average 1.1904761904761905) internal successors, (50), 44 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:43:03,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2022-10-15 21:43:03,001 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 21 [2022-10-15 21:43:03,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:43:03,002 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2022-10-15 21:43:03,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 24 states have internal predecessors, (57), 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) [2022-10-15 21:43:03,002 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2022-10-15 21:43:03,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-10-15 21:43:03,005 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:43:03,005 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2022-10-15 21:43:03,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-15 21:43:03,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:43:03,220 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:43:03,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:43:03,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1045995991, now seen corresponding path program 2 times [2022-10-15 21:43:03,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:43:03,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492305860] [2022-10-15 21:43:03,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:43:03,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:43:03,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:43:03,394 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:43:03,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:43:03,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492305860] [2022-10-15 21:43:03,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492305860] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:43:03,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945358453] [2022-10-15 21:43:03,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 21:43:03,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:43:03,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:43:03,396 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:43:03,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-15 21:43:03,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 21:43:03,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 21:43:03,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-15 21:43:03,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:43:03,637 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:43:03,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:43:03,794 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:43:03,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945358453] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:43:03,795 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:43:03,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 26 [2022-10-15 21:43:03,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148525387] [2022-10-15 21:43:03,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:43:03,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-10-15 21:43:03,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:43:03,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-10-15 21:43:03,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=521, Unknown=0, NotChecked=0, Total=702 [2022-10-15 21:43:03,797 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand has 27 states, 26 states have (on average 2.769230769230769) internal successors, (72), 27 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:43:04,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:43:04,236 INFO L93 Difference]: Finished difference Result 60 states and 63 transitions. [2022-10-15 21:43:04,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-10-15 21:43:04,237 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.769230769230769) internal successors, (72), 27 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-10-15 21:43:04,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:43:04,238 INFO L225 Difference]: With dead ends: 60 [2022-10-15 21:43:04,238 INFO L226 Difference]: Without dead ends: 55 [2022-10-15 21:43:04,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=514, Invalid=1126, Unknown=0, NotChecked=0, Total=1640 [2022-10-15 21:43:04,240 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 115 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 21:43:04,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 27 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 21:43:04,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-10-15 21:43:04,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2022-10-15 21:43:04,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 48 states have internal predecessors, (52), 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) [2022-10-15 21:43:04,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2022-10-15 21:43:04,248 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 26 [2022-10-15 21:43:04,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:43:04,248 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2022-10-15 21:43:04,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.769230769230769) internal successors, (72), 27 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:43:04,249 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2022-10-15 21:43:04,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-10-15 21:43:04,250 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:43:04,250 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1] [2022-10-15 21:43:04,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-15 21:43:04,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:43:04,464 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:43:04,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:43:04,465 INFO L85 PathProgramCache]: Analyzing trace with hash -180106005, now seen corresponding path program 2 times [2022-10-15 21:43:04,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:43:04,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917544843] [2022-10-15 21:43:04,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:43:04,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:43:04,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:43:04,523 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-10-15 21:43:04,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:43:04,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917544843] [2022-10-15 21:43:04,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917544843] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:43:04,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727871587] [2022-10-15 21:43:04,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 21:43:04,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:43:04,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:43:04,526 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:43:04,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-15 21:43:04,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-15 21:43:04,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 21:43:04,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-15 21:43:04,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:43:04,595 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-10-15 21:43:04,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:43:04,636 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-10-15 21:43:04,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727871587] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:43:04,637 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:43:04,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-10-15 21:43:04,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833224367] [2022-10-15 21:43:04,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:43:04,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 21:43:04,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:43:04,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 21:43:04,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-15 21:43:04,639 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:43:04,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:43:04,663 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2022-10-15 21:43:04,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 21:43:04,664 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-10-15 21:43:04,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:43:04,665 INFO L225 Difference]: With dead ends: 49 [2022-10-15 21:43:04,665 INFO L226 Difference]: Without dead ends: 48 [2022-10-15 21:43:04,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-10-15 21:43:04,666 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 9 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 21:43:04,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 10 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 21:43:04,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-10-15 21:43:04,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2022-10-15 21:43:04,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 47 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) [2022-10-15 21:43:04,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2022-10-15 21:43:04,673 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 28 [2022-10-15 21:43:04,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:43:04,674 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2022-10-15 21:43:04,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:43:04,674 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2022-10-15 21:43:04,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-10-15 21:43:04,675 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:43:04,675 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1, 1, 1, 1] [2022-10-15 21:43:04,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-15 21:43:04,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-10-15 21:43:04,891 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:43:04,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:43:04,892 INFO L85 PathProgramCache]: Analyzing trace with hash 858705197, now seen corresponding path program 3 times [2022-10-15 21:43:04,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:43:04,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791672832] [2022-10-15 21:43:04,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:43:04,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:43:04,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:43:05,343 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:43:05,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:43:05,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791672832] [2022-10-15 21:43:05,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791672832] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:43:05,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618167674] [2022-10-15 21:43:05,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 21:43:05,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:43:05,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:43:05,351 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:43:05,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-15 21:43:05,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-10-15 21:43:05,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 21:43:05,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjunts are in the unsatisfiable core [2022-10-15 21:43:05,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:43:05,900 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:43:05,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:43:06,606 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:43:06,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618167674] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:43:06,607 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:43:06,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 47 [2022-10-15 21:43:06,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654287536] [2022-10-15 21:43:06,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:43:06,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-10-15 21:43:06,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:43:06,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-10-15 21:43:06,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=383, Invalid=1873, Unknown=0, NotChecked=0, Total=2256 [2022-10-15 21:43:06,610 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand has 48 states, 47 states have (on average 2.4893617021276597) internal successors, (117), 48 states have internal predecessors, (117), 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) [2022-10-15 21:43:10,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:43:10,611 INFO L93 Difference]: Finished difference Result 90 states and 102 transitions. [2022-10-15 21:43:10,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-10-15 21:43:10,612 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.4893617021276597) internal successors, (117), 48 states have internal predecessors, (117), 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 41 [2022-10-15 21:43:10,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:43:10,614 INFO L225 Difference]: With dead ends: 90 [2022-10-15 21:43:10,614 INFO L226 Difference]: Without dead ends: 89 [2022-10-15 21:43:10,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2097 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1990, Invalid=5492, Unknown=0, NotChecked=0, Total=7482 [2022-10-15 21:43:10,619 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 388 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-15 21:43:10,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 31 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-15 21:43:10,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-10-15 21:43:10,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 84. [2022-10-15 21:43:10,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 82 states have (on average 1.1097560975609757) internal successors, (91), 83 states have internal predecessors, (91), 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) [2022-10-15 21:43:10,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 91 transitions. [2022-10-15 21:43:10,633 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 91 transitions. Word has length 41 [2022-10-15 21:43:10,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:43:10,634 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 91 transitions. [2022-10-15 21:43:10,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.4893617021276597) internal successors, (117), 48 states have internal predecessors, (117), 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) [2022-10-15 21:43:10,634 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 91 transitions. [2022-10-15 21:43:10,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-10-15 21:43:10,635 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:43:10,635 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2022-10-15 21:43:10,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-15 21:43:10,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-10-15 21:43:10,850 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:43:10,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:43:10,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1163103447, now seen corresponding path program 3 times [2022-10-15 21:43:10,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:43:10,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912917049] [2022-10-15 21:43:10,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:43:10,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:43:10,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:43:11,231 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:43:11,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:43:11,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912917049] [2022-10-15 21:43:11,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912917049] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:43:11,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507540285] [2022-10-15 21:43:11,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 21:43:11,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:43:11,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:43:11,233 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:43:11,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-15 21:43:11,278 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-10-15 21:43:11,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 21:43:11,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 19 conjunts are in the unsatisfiable core [2022-10-15 21:43:11,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:43:11,844 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:43:11,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:43:12,681 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:43:12,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507540285] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:43:12,682 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:43:12,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 50 [2022-10-15 21:43:12,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457436463] [2022-10-15 21:43:12,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:43:12,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-10-15 21:43:12,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:43:12,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-10-15 21:43:12,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=2140, Unknown=0, NotChecked=0, Total=2550 [2022-10-15 21:43:12,686 INFO L87 Difference]: Start difference. First operand 84 states and 91 transitions. Second operand has 51 states, 50 states have (on average 2.64) internal successors, (132), 51 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:43:17,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:43:17,471 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2022-10-15 21:43:17,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-10-15 21:43:17,472 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 2.64) internal successors, (132), 51 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-10-15 21:43:17,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:43:17,473 INFO L225 Difference]: With dead ends: 95 [2022-10-15 21:43:17,474 INFO L226 Difference]: Without dead ends: 91 [2022-10-15 21:43:17,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2214 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=2114, Invalid=6258, Unknown=0, NotChecked=0, Total=8372 [2022-10-15 21:43:17,479 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 411 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-15 21:43:17,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 40 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-15 21:43:17,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-10-15 21:43:17,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 88. [2022-10-15 21:43:17,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 86 states have (on average 1.0232558139534884) internal successors, (88), 87 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:43:17,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2022-10-15 21:43:17,491 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 46 [2022-10-15 21:43:17,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:43:17,492 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2022-10-15 21:43:17,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 2.64) internal successors, (132), 51 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:43:17,492 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2022-10-15 21:43:17,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-10-15 21:43:17,494 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:43:17,495 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 15, 1, 1, 1, 1, 1] [2022-10-15 21:43:17,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-15 21:43:17,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-10-15 21:43:17,709 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:43:17,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:43:17,710 INFO L85 PathProgramCache]: Analyzing trace with hash 389538605, now seen corresponding path program 4 times [2022-10-15 21:43:17,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:43:17,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337699323] [2022-10-15 21:43:17,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:43:17,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:43:17,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:43:18,925 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:43:18,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:43:18,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337699323] [2022-10-15 21:43:18,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337699323] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:43:18,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471834200] [2022-10-15 21:43:18,926 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-15 21:43:18,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:43:18,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:43:18,928 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:43:18,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-15 21:43:18,983 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-15 21:43:18,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 21:43:18,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 33 conjunts are in the unsatisfiable core [2022-10-15 21:43:18,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:43:21,475 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:43:21,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:43:24,133 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:43:24,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471834200] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:43:24,133 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:43:24,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 32] total 95 [2022-10-15 21:43:24,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23829436] [2022-10-15 21:43:24,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:43:24,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-10-15 21:43:24,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:43:24,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-10-15 21:43:24,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1639, Invalid=7481, Unknown=0, NotChecked=0, Total=9120 [2022-10-15 21:43:24,139 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand has 96 states, 95 states have (on average 2.4947368421052634) internal successors, (237), 96 states have internal predecessors, (237), 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) [2022-10-15 21:43:39,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:43:39,368 INFO L93 Difference]: Finished difference Result 195 states and 210 transitions. [2022-10-15 21:43:39,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-10-15 21:43:39,370 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 2.4947368421052634) internal successors, (237), 96 states have internal predecessors, (237), 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 81 [2022-10-15 21:43:39,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:43:39,371 INFO L225 Difference]: With dead ends: 195 [2022-10-15 21:43:39,371 INFO L226 Difference]: Without dead ends: 194 [2022-10-15 21:43:39,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5193 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=6577, Invalid=16985, Unknown=0, NotChecked=0, Total=23562 [2022-10-15 21:43:39,379 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 1253 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 658 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1253 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 658 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-15 21:43:39,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1253 Valid, 82 Invalid, 1347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [658 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-10-15 21:43:39,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-10-15 21:43:39,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 164. [2022-10-15 21:43:39,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 162 states have (on average 1.1049382716049383) internal successors, (179), 163 states have internal predecessors, (179), 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) [2022-10-15 21:43:39,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 179 transitions. [2022-10-15 21:43:39,404 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 179 transitions. Word has length 81 [2022-10-15 21:43:39,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:43:39,405 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 179 transitions. [2022-10-15 21:43:39,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 2.4947368421052634) internal successors, (237), 96 states have internal predecessors, (237), 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) [2022-10-15 21:43:39,406 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 179 transitions. [2022-10-15 21:43:39,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-10-15 21:43:39,412 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:43:39,412 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1] [2022-10-15 21:43:39,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-15 21:43:39,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-10-15 21:43:39,627 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:43:39,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:43:39,628 INFO L85 PathProgramCache]: Analyzing trace with hash 2128682281, now seen corresponding path program 4 times [2022-10-15 21:43:39,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:43:39,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835820750] [2022-10-15 21:43:39,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:43:39,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:43:39,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:43:41,121 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:43:41,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:43:41,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835820750] [2022-10-15 21:43:41,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835820750] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:43:41,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5519341] [2022-10-15 21:43:41,122 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-15 21:43:41,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:43:41,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:43:41,124 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:43:41,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-10-15 21:43:41,173 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-15 21:43:41,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 21:43:41,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 34 conjunts are in the unsatisfiable core [2022-10-15 21:43:41,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:43:44,633 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:43:44,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:43:48,924 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:43:48,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5519341] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:43:48,925 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:43:48,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33, 33] total 98 [2022-10-15 21:43:48,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735039552] [2022-10-15 21:43:48,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:43:48,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2022-10-15 21:43:48,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:43:48,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2022-10-15 21:43:48,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1744, Invalid=7958, Unknown=0, NotChecked=0, Total=9702 [2022-10-15 21:43:48,929 INFO L87 Difference]: Start difference. First operand 164 states and 179 transitions. Second operand has 99 states, 98 states have (on average 2.5714285714285716) internal successors, (252), 99 states have internal predecessors, (252), 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)