/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/float-benchs/sqrt_Householder_constant.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 11:55:14,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 11:55:14,253 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 11:55:14,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-10-16 11:55:14,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 11:55:14,353 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 11:55:14,354 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 11:55:14,355 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-16 11:55:14,386 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 11:55:14,386 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 11:55:14,387 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 11:55:14,387 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 11:55:14,388 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 11:55:14,388 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 11:55:14,389 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 11:55:14,389 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 11:55:14,389 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 11:55:14,389 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 11:55:14,390 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 11:55:14,390 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 11:55:14,390 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 11:55:14,390 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 11:55:14,394 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 11:55:14,394 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 11:55:14,394 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 11:55:14,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 11:55:14,395 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 11:55:14,395 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 11:55:14,395 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 11:55:14,395 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 11:55:14,395 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 11:55:14,396 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 11:55:14,396 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 11:55:14,396 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 11:55:14,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 11:55:14,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 11:55:14,397 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 11:55:14,397 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 11:55:14,397 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 11:55:14,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 11:55:14,398 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 11:55:14,398 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 11:55:14,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 11:55:14,813 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 11:55:14,817 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 11:55:14,819 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 11:55:14,820 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 11:55:14,822 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c [2022-10-16 11:55:14,905 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c5fd40c2/3c8b15c09e0a4feaae2bb153d61b4413/FLAGbdf8e988e [2022-10-16 11:55:15,486 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 11:55:15,487 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c [2022-10-16 11:55:15,502 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c5fd40c2/3c8b15c09e0a4feaae2bb153d61b4413/FLAGbdf8e988e [2022-10-16 11:55:15,849 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c5fd40c2/3c8b15c09e0a4feaae2bb153d61b4413 [2022-10-16 11:55:15,854 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 11:55:15,861 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 11:55:15,865 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 11:55:15,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 11:55:15,870 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 11:55:15,871 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:55:15" (1/1) ... [2022-10-16 11:55:15,873 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ba20e77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:55:15, skipping insertion in model container [2022-10-16 11:55:15,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:55:15" (1/1) ... [2022-10-16 11:55:15,883 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 11:55:15,906 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 11:55:16,150 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/float-benchs/sqrt_Householder_constant.c[831,844] [2022-10-16 11:55:16,189 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 11:55:16,200 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 11:55:16,216 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/float-benchs/sqrt_Householder_constant.c[831,844] [2022-10-16 11:55:16,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 11:55:16,265 INFO L208 MainTranslator]: Completed translation [2022-10-16 11:55:16,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:55:16 WrapperNode [2022-10-16 11:55:16,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 11:55:16,267 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 11:55:16,267 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 11:55:16,268 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 11:55:16,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:55:16" (1/1) ... [2022-10-16 11:55:16,286 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:55:16" (1/1) ... [2022-10-16 11:55:16,308 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 67 [2022-10-16 11:55:16,308 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 11:55:16,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 11:55:16,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 11:55:16,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 11:55:16,320 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:55:16" (1/1) ... [2022-10-16 11:55:16,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:55:16" (1/1) ... [2022-10-16 11:55:16,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:55:16" (1/1) ... [2022-10-16 11:55:16,322 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:55:16" (1/1) ... [2022-10-16 11:55:16,327 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:55:16" (1/1) ... [2022-10-16 11:55:16,332 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:55:16" (1/1) ... [2022-10-16 11:55:16,333 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:55:16" (1/1) ... [2022-10-16 11:55:16,334 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:55:16" (1/1) ... [2022-10-16 11:55:16,336 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 11:55:16,337 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 11:55:16,337 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 11:55:16,338 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 11:55:16,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:55:16" (1/1) ... [2022-10-16 11:55:16,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 11:55:16,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:55:16,374 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-16 11:55:16,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-16 11:55:16,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 11:55:16,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 11:55:16,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 11:55:16,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 11:55:16,505 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 11:55:16,506 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 11:55:16,755 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 11:55:16,773 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 11:55:16,774 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-16 11:55:16,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:55:16 BoogieIcfgContainer [2022-10-16 11:55:16,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 11:55:16,783 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 11:55:16,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 11:55:16,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 11:55:16,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:55:15" (1/3) ... [2022-10-16 11:55:16,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fb818b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:55:16, skipping insertion in model container [2022-10-16 11:55:16,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:55:16" (2/3) ... [2022-10-16 11:55:16,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fb818b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:55:16, skipping insertion in model container [2022-10-16 11:55:16,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:55:16" (3/3) ... [2022-10-16 11:55:16,794 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_constant.c [2022-10-16 11:55:16,818 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 11:55:16,818 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-16 11:55:16,888 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 11:55:16,911 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;@2a0acdf4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 11:55:16,911 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-10-16 11:55:16,922 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 19 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:55:16,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-16 11:55:16,930 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:55:16,931 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:55:16,932 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-16 11:55:16,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:55:16,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1809708300, now seen corresponding path program 1 times [2022-10-16 11:55:16,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:55:16,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111442304] [2022-10-16 11:55:16,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:55:16,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:55:17,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:55:17,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:55:17,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:55:17,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111442304] [2022-10-16 11:55:17,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111442304] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:55:17,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:55:17,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:55:17,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983561170] [2022-10-16 11:55:17,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:55:17,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:55:17,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:55:17,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:55:17,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:55:17,307 INFO L87 Difference]: Start difference. First operand has 20 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 19 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:55:17,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:55:17,365 INFO L93 Difference]: Finished difference Result 52 states and 68 transitions. [2022-10-16 11:55:17,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:55:17,367 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-10-16 11:55:17,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:55:17,377 INFO L225 Difference]: With dead ends: 52 [2022-10-16 11:55:17,377 INFO L226 Difference]: Without dead ends: 24 [2022-10-16 11:55:17,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 11:55:17,385 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 14 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:55:17,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 62 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:55:17,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-10-16 11:55:17,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 18. [2022-10-16 11:55:17,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 16 states have (on average 1.3125) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:55:17,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2022-10-16 11:55:17,419 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 7 [2022-10-16 11:55:17,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:55:17,420 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2022-10-16 11:55:17,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:55:17,420 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2022-10-16 11:55:17,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-16 11:55:17,421 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:55:17,421 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:55:17,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 11:55:17,422 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-16 11:55:17,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:55:17,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1704441934, now seen corresponding path program 1 times [2022-10-16 11:55:17,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:55:17,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912044770] [2022-10-16 11:55:17,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:55:17,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:55:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:55:17,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:55:17,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:55:17,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912044770] [2022-10-16 11:55:17,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912044770] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:55:17,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198060644] [2022-10-16 11:55:17,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:55:17,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:55:17,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:55:17,591 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:55:17,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-16 11:55:17,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:55:17,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 11:55:17,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:55:17,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:55:17,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:55:17,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:55:17,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198060644] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:55:17,775 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:55:17,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-10-16 11:55:17,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653895165] [2022-10-16 11:55:17,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:55:17,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-16 11:55:17,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:55:17,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-16 11:55:17,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-10-16 11:55:17,780 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:55:17,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:55:17,910 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2022-10-16 11:55:17,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-16 11:55:17,911 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-10-16 11:55:17,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:55:17,914 INFO L225 Difference]: With dead ends: 55 [2022-10-16 11:55:17,914 INFO L226 Difference]: Without dead ends: 54 [2022-10-16 11:55:17,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2022-10-16 11:55:17,917 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 57 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:55:17,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 87 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:55:17,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-10-16 11:55:17,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 26. [2022-10-16 11:55:17,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 25 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:55:17,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2022-10-16 11:55:17,926 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 10 [2022-10-16 11:55:17,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:55:17,927 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions. [2022-10-16 11:55:17,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:55:17,927 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions. [2022-10-16 11:55:17,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-16 11:55:17,928 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:55:17,928 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:55:17,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-16 11:55:18,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:55:18,145 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-16 11:55:18,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:55:18,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1298092342, now seen corresponding path program 1 times [2022-10-16 11:55:18,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:55:18,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735166100] [2022-10-16 11:55:18,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:55:18,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:55:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:55:18,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:55:18,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:55:18,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735166100] [2022-10-16 11:55:18,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735166100] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:55:18,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951872320] [2022-10-16 11:55:18,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:55:18,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:55:18,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:55:18,291 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:55:18,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-16 11:55:18,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:55:18,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 11:55:18,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:55:18,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:55:18,378 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:55:18,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951872320] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:55:18,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:55:18,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-10-16 11:55:18,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437895365] [2022-10-16 11:55:18,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:55:18,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 11:55:18,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:55:18,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 11:55:18,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-16 11:55:18,382 INFO L87 Difference]: Start difference. First operand 26 states and 34 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:55:18,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:55:18,424 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2022-10-16 11:55:18,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 11:55:18,424 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-10-16 11:55:18,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:55:18,425 INFO L225 Difference]: With dead ends: 33 [2022-10-16 11:55:18,426 INFO L226 Difference]: Without dead ends: 32 [2022-10-16 11:55:18,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-10-16 11:55:18,428 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 19 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:55:18,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 64 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:55:18,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-10-16 11:55:18,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 25. [2022-10-16 11:55:18,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 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) [2022-10-16 11:55:18,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2022-10-16 11:55:18,436 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 11 [2022-10-16 11:55:18,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:55:18,436 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2022-10-16 11:55:18,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:55:18,437 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2022-10-16 11:55:18,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-10-16 11:55:18,438 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:55:18,438 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2022-10-16 11:55:18,473 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-10-16 11:55:18,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-10-16 11:55:18,652 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-16 11:55:18,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:55:18,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1290751604, now seen corresponding path program 2 times [2022-10-16 11:55:18,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:55:18,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531139293] [2022-10-16 11:55:18,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:55:18,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:55:18,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:55:18,953 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:55:18,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:55:18,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531139293] [2022-10-16 11:55:18,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531139293] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:55:18,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221269466] [2022-10-16 11:55:18,957 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 11:55:18,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:55:18,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:55:18,964 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:55:18,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-16 11:55:19,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 11:55:19,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:55:19,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-16 11:55:19,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:55:19,174 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:55:19,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:55:19,339 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:55:19,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221269466] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:55:19,340 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:55:19,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-10-16 11:55:19,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84601767] [2022-10-16 11:55:19,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:55:19,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-10-16 11:55:19,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:55:19,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-10-16 11:55:19,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2022-10-16 11:55:19,344 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 24 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) [2022-10-16 11:55:19,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:55:19,559 INFO L93 Difference]: Finished difference Result 105 states and 122 transitions. [2022-10-16 11:55:19,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-10-16 11:55:19,559 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 24 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 19 [2022-10-16 11:55:19,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:55:19,561 INFO L225 Difference]: With dead ends: 105 [2022-10-16 11:55:19,561 INFO L226 Difference]: Without dead ends: 104 [2022-10-16 11:55:19,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=332, Invalid=790, Unknown=0, NotChecked=0, Total=1122 [2022-10-16 11:55:19,564 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 175 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:55:19,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 128 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:55:19,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-10-16 11:55:19,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 43. [2022-10-16 11:55:19,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.3095238095238095) internal successors, (55), 42 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:55:19,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2022-10-16 11:55:19,576 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 55 transitions. Word has length 19 [2022-10-16 11:55:19,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:55:19,576 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 55 transitions. [2022-10-16 11:55:19,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 24 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) [2022-10-16 11:55:19,577 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 55 transitions. [2022-10-16 11:55:19,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-10-16 11:55:19,578 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:55:19,578 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1] [2022-10-16 11:55:19,616 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-10-16 11:55:19,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:55:19,793 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-16 11:55:19,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:55:19,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1093674060, now seen corresponding path program 3 times [2022-10-16 11:55:19,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:55:19,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225104793] [2022-10-16 11:55:19,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:55:19,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:55:19,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:55:20,432 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:55:20,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:55:20,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225104793] [2022-10-16 11:55:20,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225104793] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:55:20,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684815328] [2022-10-16 11:55:20,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 11:55:20,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:55:20,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:55:20,436 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:55:20,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-16 11:55:20,515 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-10-16 11:55:20,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:55:20,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 23 conjunts are in the unsatisfiable core [2022-10-16 11:55:20,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:55:20,641 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:55:20,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:55:21,193 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:55:21,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684815328] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:55:21,193 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:55:21,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2022-10-16 11:55:21,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891728348] [2022-10-16 11:55:21,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:55:21,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-10-16 11:55:21,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:55:21,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-10-16 11:55:21,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2022-10-16 11:55:21,197 INFO L87 Difference]: Start difference. First operand 43 states and 55 transitions. Second operand has 48 states, 47 states have (on average 1.574468085106383) internal successors, (74), 48 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:55:21,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:55:21,802 INFO L93 Difference]: Finished difference Result 213 states and 248 transitions. [2022-10-16 11:55:21,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-10-16 11:55:21,803 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.574468085106383) internal successors, (74), 48 states have internal predecessors, (74), 0 states have call successors, (0), 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 37 [2022-10-16 11:55:21,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:55:21,805 INFO L225 Difference]: With dead ends: 213 [2022-10-16 11:55:21,805 INFO L226 Difference]: Without dead ends: 212 [2022-10-16 11:55:21,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1048 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1382, Invalid=3448, Unknown=0, NotChecked=0, Total=4830 [2022-10-16 11:55:21,809 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 553 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:55:21,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 190 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:55:21,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-10-16 11:55:21,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 79. [2022-10-16 11:55:21,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.3205128205128205) internal successors, (103), 78 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:55:21,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 103 transitions. [2022-10-16 11:55:21,824 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 103 transitions. Word has length 37 [2022-10-16 11:55:21,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:55:21,825 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 103 transitions. [2022-10-16 11:55:21,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.574468085106383) internal successors, (74), 48 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:55:21,826 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 103 transitions. [2022-10-16 11:55:21,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-10-16 11:55:21,828 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:55:21,828 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 1, 1, 1, 1, 1, 1] [2022-10-16 11:55:21,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-16 11:55:22,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:55:22,042 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-16 11:55:22,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:55:22,043 INFO L85 PathProgramCache]: Analyzing trace with hash -376604212, now seen corresponding path program 4 times [2022-10-16 11:55:22,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:55:22,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110940327] [2022-10-16 11:55:22,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:55:22,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:55:22,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:55:23,641 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:55:23,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:55:23,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110940327] [2022-10-16 11:55:23,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110940327] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:55:23,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724461674] [2022-10-16 11:55:23,643 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 11:55:23,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:55:23,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:55:23,644 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:55:23,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-16 11:55:23,771 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 11:55:23,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:55:23,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 47 conjunts are in the unsatisfiable core [2022-10-16 11:55:23,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:55:23,968 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:55:23,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:55:25,981 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:55:25,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724461674] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:55:25,982 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:55:25,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 95 [2022-10-16 11:55:25,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012433170] [2022-10-16 11:55:25,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:55:25,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-10-16 11:55:25,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:55:25,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-10-16 11:55:25,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2351, Invalid=6769, Unknown=0, NotChecked=0, Total=9120 [2022-10-16 11:55:25,990 INFO L87 Difference]: Start difference. First operand 79 states and 103 transitions. Second operand has 96 states, 95 states have (on average 1.5368421052631578) internal successors, (146), 96 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:55:28,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:55:28,041 INFO L93 Difference]: Finished difference Result 429 states and 500 transitions. [2022-10-16 11:55:28,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-10-16 11:55:28,042 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 1.5368421052631578) internal successors, (146), 96 states have internal predecessors, (146), 0 states have call successors, (0), 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 73 [2022-10-16 11:55:28,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:55:28,048 INFO L225 Difference]: With dead ends: 429 [2022-10-16 11:55:28,048 INFO L226 Difference]: Without dead ends: 428 [2022-10-16 11:55:28,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4408 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=5642, Invalid=14380, Unknown=0, NotChecked=0, Total=20022 [2022-10-16 11:55:28,061 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 1413 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 11:55:28,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1413 Valid, 350 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 11:55:28,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-10-16 11:55:28,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 151. [2022-10-16 11:55:28,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.3266666666666667) internal successors, (199), 150 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:55:28,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 199 transitions. [2022-10-16 11:55:28,119 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 199 transitions. Word has length 73 [2022-10-16 11:55:28,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:55:28,123 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 199 transitions. [2022-10-16 11:55:28,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 1.5368421052631578) internal successors, (146), 96 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:55:28,123 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 199 transitions. [2022-10-16 11:55:28,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-10-16 11:55:28,131 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:55:28,131 INFO L195 NwaCegarLoop]: trace histogram [47, 46, 46, 1, 1, 1, 1, 1, 1] [2022-10-16 11:55:28,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-16 11:55:28,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:55:28,332 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-16 11:55:28,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:55:28,333 INFO L85 PathProgramCache]: Analyzing trace with hash 26338508, now seen corresponding path program 5 times [2022-10-16 11:55:28,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:55:28,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76372534] [2022-10-16 11:55:28,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:55:28,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:55:28,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:55:34,062 INFO L134 CoverageAnalysis]: Checked inductivity of 3197 backedges. 0 proven. 3197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:55:34,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:55:34,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76372534] [2022-10-16 11:55:34,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76372534] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:55:34,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913207513] [2022-10-16 11:55:34,063 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-16 11:55:34,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:55:34,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:55:34,071 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:55:34,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-16 11:55:34,369 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2022-10-16 11:55:34,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:55:34,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 95 conjunts are in the unsatisfiable core [2022-10-16 11:55:34,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:55:34,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3197 backedges. 0 proven. 3197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:55:34,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:55:43,036 INFO L134 CoverageAnalysis]: Checked inductivity of 3197 backedges. 0 proven. 3197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:55:43,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913207513] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:55:43,037 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:55:43,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 191 [2022-10-16 11:55:43,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111585073] [2022-10-16 11:55:43,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:55:43,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-10-16 11:55:43,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:55:43,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-10-16 11:55:43,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9311, Invalid=27361, Unknown=0, NotChecked=0, Total=36672 [2022-10-16 11:55:43,055 INFO L87 Difference]: Start difference. First operand 151 states and 199 transitions. Second operand has 192 states, 191 states have (on average 1.5183246073298429) internal successors, (290), 192 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:55:53,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:55:53,066 INFO L93 Difference]: Finished difference Result 861 states and 1004 transitions. [2022-10-16 11:55:53,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2022-10-16 11:55:53,067 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 1.5183246073298429) internal successors, (290), 192 states have internal predecessors, (290), 0 states have call successors, (0), 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 145 [2022-10-16 11:55:53,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:55:53,076 INFO L225 Difference]: With dead ends: 861 [2022-10-16 11:55:53,077 INFO L226 Difference]: Without dead ends: 860 [2022-10-16 11:55:53,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18040 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=22802, Invalid=58708, Unknown=0, NotChecked=0, Total=81510 [2022-10-16 11:55:53,092 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 3006 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3006 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 11:55:53,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3006 Valid, 693 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-16 11:55:53,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2022-10-16 11:55:53,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 295. [2022-10-16 11:55:53,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 294 states have (on average 1.3299319727891157) internal successors, (391), 294 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:55:53,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 391 transitions. [2022-10-16 11:55:53,121 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 391 transitions. Word has length 145 [2022-10-16 11:55:53,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:55:53,122 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 391 transitions. [2022-10-16 11:55:53,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 1.5183246073298429) internal successors, (290), 192 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:55:53,123 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 391 transitions. [2022-10-16 11:55:53,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2022-10-16 11:55:53,127 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:55:53,127 INFO L195 NwaCegarLoop]: trace histogram [95, 94, 94, 1, 1, 1, 1, 1, 1] [2022-10-16 11:55:53,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-16 11:55:53,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:55:53,344 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-16 11:55:53,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:55:53,345 INFO L85 PathProgramCache]: Analyzing trace with hash 759282380, now seen corresponding path program 6 times [2022-10-16 11:55:53,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:55:53,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986332988] [2022-10-16 11:55:53,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:55:53,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:55:53,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:56:14,540 INFO L134 CoverageAnalysis]: Checked inductivity of 13301 backedges. 0 proven. 13301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:56:14,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:56:14,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986332988] [2022-10-16 11:56:14,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986332988] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:56:14,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722503264] [2022-10-16 11:56:14,542 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-10-16 11:56:14,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:56:14,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:56:14,548 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:56:14,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-16 11:56:15,224 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2022-10-16 11:56:15,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:56:15,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 1085 conjuncts, 191 conjunts are in the unsatisfiable core [2022-10-16 11:56:15,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:56:15,821 INFO L134 CoverageAnalysis]: Checked inductivity of 13301 backedges. 0 proven. 13301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:56:15,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:56:48,606 INFO L134 CoverageAnalysis]: Checked inductivity of 13301 backedges. 0 proven. 13301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:56:48,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722503264] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:56:48,607 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:56:48,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 383 [2022-10-16 11:56:48,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410029855] [2022-10-16 11:56:48,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:56:48,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2022-10-16 11:56:48,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:56:48,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2022-10-16 11:56:48,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37055, Invalid=110017, Unknown=0, NotChecked=0, Total=147072 [2022-10-16 11:56:48,635 INFO L87 Difference]: Start difference. First operand 295 states and 391 transitions. Second operand has 384 states, 383 states have (on average 1.5091383812010444) internal successors, (578), 384 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:57:57,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:57:57,372 INFO L93 Difference]: Finished difference Result 1725 states and 2012 transitions. [2022-10-16 11:57:57,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 383 states. [2022-10-16 11:57:57,374 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 1.5091383812010444) internal successors, (578), 384 states have internal predecessors, (578), 0 states have call successors, (0), 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 289 [2022-10-16 11:57:57,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:57:57,383 INFO L225 Difference]: With dead ends: 1725 [2022-10-16 11:57:57,384 INFO L226 Difference]: Without dead ends: 1724 [2022-10-16 11:57:57,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 957 GetRequests, 385 SyntacticMatches, 0 SemanticMatches, 572 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72952 ImplicationChecksByTransitivity, 67.8s TimeCoverageRelationStatistics Valid=91682, Invalid=237220, Unknown=0, NotChecked=0, Total=328902 [2022-10-16 11:57:57,408 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 9390 mSDsluCounter, 1206 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9390 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-10-16 11:57:57,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9390 Valid, 1220 Invalid, 1081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-10-16 11:57:57,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1724 states. [2022-10-16 11:57:57,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1724 to 583. [2022-10-16 11:57:57,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 582 states have (on average 1.331615120274914) internal successors, (775), 582 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:57:57,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 775 transitions. [2022-10-16 11:57:57,474 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 775 transitions. Word has length 289 [2022-10-16 11:57:57,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:57:57,475 INFO L495 AbstractCegarLoop]: Abstraction has 583 states and 775 transitions. [2022-10-16 11:57:57,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 1.5091383812010444) internal successors, (578), 384 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 11:57:57,477 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 775 transitions. [2022-10-16 11:57:57,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2022-10-16 11:57:57,491 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:57:57,491 INFO L195 NwaCegarLoop]: trace histogram [191, 190, 190, 1, 1, 1, 1, 1, 1] [2022-10-16 11:57:57,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-16 11:57:57,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:57:57,707 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-16 11:57:57,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:57:57,708 INFO L85 PathProgramCache]: Analyzing trace with hash -415406388, now seen corresponding path program 7 times [2022-10-16 11:57:57,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:57:57,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032412329] [2022-10-16 11:57:57,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:57:57,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:57:58,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat