/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_pseudoconstant.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 20:46:30,272 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 20:46:30,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 20:46:30,334 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-10-15 20:46:30,444 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 20:46:30,445 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 20:46:30,446 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 20:46:30,447 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-15 20:46:30,477 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 20:46:30,477 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 20:46:30,478 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 20:46:30,478 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 20:46:30,479 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 20:46:30,479 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 20:46:30,480 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 20:46:30,480 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 20:46:30,481 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 20:46:30,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 20:46:30,481 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 20:46:30,481 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 20:46:30,482 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 20:46:30,482 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 20:46:30,482 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 20:46:30,482 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-15 20:46:30,482 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 20:46:30,483 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-15 20:46:30,483 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-15 20:46:30,483 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 20:46:30,483 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-15 20:46:30,483 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 20:46:30,484 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-15 20:46:30,484 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 20:46:30,484 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 20:46:30,484 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 20:46:30,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 20:46:30,485 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 20:46:30,485 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 20:46:30,485 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-15 20:46:30,485 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 20:46:30,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 20:46:30,486 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-15 20:46:30,486 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 20:46:30,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 20:46:30,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 20:46:30,937 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 20:46:30,938 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 20:46:30,939 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 20:46:30,941 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c [2022-10-15 20:46:31,035 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcd2cc01c/7401cbb0fffa48f5b4fe5eb879de0356/FLAG7798af83b [2022-10-15 20:46:31,842 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 20:46:31,842 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_Householder_pseudoconstant.c [2022-10-15 20:46:31,851 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcd2cc01c/7401cbb0fffa48f5b4fe5eb879de0356/FLAG7798af83b [2022-10-15 20:46:32,224 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcd2cc01c/7401cbb0fffa48f5b4fe5eb879de0356 [2022-10-15 20:46:32,229 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 20:46:32,240 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 20:46:32,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 20:46:32,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 20:46:32,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 20:46:32,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:46:32" (1/1) ... [2022-10-15 20:46:32,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7607327 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:46:32, skipping insertion in model container [2022-10-15 20:46:32,254 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:46:32" (1/1) ... [2022-10-15 20:46:32,265 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 20:46:32,291 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 20:46:32,517 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_pseudoconstant.c[855,868] [2022-10-15 20:46:32,545 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 20:46:32,557 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 20:46:32,576 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_pseudoconstant.c[855,868] [2022-10-15 20:46:32,586 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 20:46:32,606 INFO L208 MainTranslator]: Completed translation [2022-10-15 20:46:32,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:46:32 WrapperNode [2022-10-15 20:46:32,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 20:46:32,610 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 20:46:32,611 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 20:46:32,611 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 20:46:32,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:46:32" (1/1) ... [2022-10-15 20:46:32,637 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:46:32" (1/1) ... [2022-10-15 20:46:32,667 INFO L138 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 75 [2022-10-15 20:46:32,667 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 20:46:32,668 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 20:46:32,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 20:46:32,669 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 20:46:32,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:46:32" (1/1) ... [2022-10-15 20:46:32,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:46:32" (1/1) ... [2022-10-15 20:46:32,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:46:32" (1/1) ... [2022-10-15 20:46:32,686 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:46:32" (1/1) ... [2022-10-15 20:46:32,692 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:46:32" (1/1) ... [2022-10-15 20:46:32,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:46:32" (1/1) ... [2022-10-15 20:46:32,699 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:46:32" (1/1) ... [2022-10-15 20:46:32,700 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:46:32" (1/1) ... [2022-10-15 20:46:32,703 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 20:46:32,705 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 20:46:32,705 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 20:46:32,705 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 20:46:32,706 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:46:32" (1/1) ... [2022-10-15 20:46:32,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 20:46:32,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:46:32,758 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-15 20:46:32,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-15 20:46:32,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 20:46:32,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 20:46:32,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 20:46:32,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 20:46:32,967 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 20:46:32,971 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 20:46:33,241 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 20:46:33,254 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 20:46:33,255 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-15 20:46:33,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:46:33 BoogieIcfgContainer [2022-10-15 20:46:33,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 20:46:33,274 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 20:46:33,275 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 20:46:33,280 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 20:46:33,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:46:32" (1/3) ... [2022-10-15 20:46:33,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@379ec24f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:46:33, skipping insertion in model container [2022-10-15 20:46:33,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:46:32" (2/3) ... [2022-10-15 20:46:33,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@379ec24f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:46:33, skipping insertion in model container [2022-10-15 20:46:33,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:46:33" (3/3) ... [2022-10-15 20:46:33,286 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_pseudoconstant.c [2022-10-15 20:46:33,317 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 20:46:33,317 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-15 20:46:33,424 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 20:46:33,455 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;@324680f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 20:46:33,492 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-10-15 20:46:33,500 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:46:33,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-15 20:46:33,509 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:46:33,511 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:46:33,512 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-15 20:46:33,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:46:33,522 INFO L85 PathProgramCache]: Analyzing trace with hash -332259152, now seen corresponding path program 1 times [2022-10-15 20:46:33,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:46:33,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500525040] [2022-10-15 20:46:33,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:46:33,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:46:33,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:46:33,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:46:33,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:46:33,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500525040] [2022-10-15 20:46:33,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500525040] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 20:46:33,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 20:46:33,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 20:46:33,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579300072] [2022-10-15 20:46:33,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 20:46:33,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-15 20:46:33,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:46:33,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-15 20:46:33,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-15 20:46:33,939 INFO L87 Difference]: Start difference. First operand has 22 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 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 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:46:33,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:46:33,965 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2022-10-15 20:46:33,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-15 20:46:33,969 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-10-15 20:46:33,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:46:33,984 INFO L225 Difference]: With dead ends: 42 [2022-10-15 20:46:33,985 INFO L226 Difference]: Without dead ends: 17 [2022-10-15 20:46:33,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-15 20:46:33,999 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 20:46:34,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 20:46:34,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-10-15 20:46:34,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-10-15 20:46:34,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:46:34,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-10-15 20:46:34,055 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 9 [2022-10-15 20:46:34,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:46:34,055 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-10-15 20:46:34,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:46:34,057 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-10-15 20:46:34,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-15 20:46:34,058 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:46:34,058 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:46:34,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 20:46:34,059 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-15 20:46:34,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:46:34,061 INFO L85 PathProgramCache]: Analyzing trace with hash -275000850, now seen corresponding path program 1 times [2022-10-15 20:46:34,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:46:34,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58725203] [2022-10-15 20:46:34,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:46:34,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:46:34,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:46:34,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:46:34,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:46:34,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58725203] [2022-10-15 20:46:34,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58725203] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 20:46:34,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 20:46:34,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 20:46:34,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438023761] [2022-10-15 20:46:34,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 20:46:34,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 20:46:34,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:46:34,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 20:46:34,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 20:46:34,265 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:46:34,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:46:34,334 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2022-10-15 20:46:34,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 20:46:34,336 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-10-15 20:46:34,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:46:34,338 INFO L225 Difference]: With dead ends: 30 [2022-10-15 20:46:34,341 INFO L226 Difference]: Without dead ends: 28 [2022-10-15 20:46:34,342 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 [2022-10-15 20:46:34,347 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 11 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 49 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 [2022-10-15 20:46:34,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 49 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 20:46:34,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-10-15 20:46:34,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 20. [2022-10-15 20:46:34,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:46:34,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-10-15 20:46:34,364 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 9 [2022-10-15 20:46:34,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:46:34,365 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-10-15 20:46:34,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:46:34,366 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-10-15 20:46:34,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-15 20:46:34,368 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:46:34,368 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:46:34,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 20:46:34,369 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-15 20:46:34,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:46:34,381 INFO L85 PathProgramCache]: Analyzing trace with hash -2047622473, now seen corresponding path program 1 times [2022-10-15 20:46:34,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:46:34,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418038928] [2022-10-15 20:46:34,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:46:34,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:46:34,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:46:34,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:46:34,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:46:34,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418038928] [2022-10-15 20:46:34,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418038928] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 20:46:34,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296652797] [2022-10-15 20:46:34,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:46:34,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:46:34,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:46:34,590 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 20:46:34,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-15 20:46:34,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:46:34,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-15 20:46:34,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 20:46:34,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:46:34,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 20:46:34,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:46:34,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296652797] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 20:46:34,831 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 20:46:34,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-10-15 20:46:34,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242910933] [2022-10-15 20:46:34,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 20:46:34,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-15 20:46:34,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:46:34,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-15 20:46:34,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-10-15 20:46:34,834 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 12 states, 11 states have (on average 2.0) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:46:35,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:46:35,091 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2022-10-15 20:46:35,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-15 20:46:35,092 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-10-15 20:46:35,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:46:35,099 INFO L225 Difference]: With dead ends: 65 [2022-10-15 20:46:35,099 INFO L226 Difference]: Without dead ends: 64 [2022-10-15 20:46:35,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2022-10-15 20:46:35,104 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 49 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 20:46:35,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 145 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 20:46:35,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-10-15 20:46:35,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 28. [2022-10-15 20:46:35,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 27 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:46:35,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2022-10-15 20:46:35,127 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 12 [2022-10-15 20:46:35,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:46:35,128 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2022-10-15 20:46:35,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:46:35,129 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2022-10-15 20:46:35,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-15 20:46:35,130 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:46:35,131 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:46:35,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-15 20:46:35,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:46:35,345 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-15 20:46:35,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:46:35,347 INFO L85 PathProgramCache]: Analyzing trace with hash 948212844, now seen corresponding path program 1 times [2022-10-15 20:46:35,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:46:35,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357192234] [2022-10-15 20:46:35,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:46:35,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:46:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:46:35,610 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:46:35,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:46:35,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357192234] [2022-10-15 20:46:35,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357192234] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 20:46:35,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375052446] [2022-10-15 20:46:35,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:46:35,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:46:35,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:46:35,614 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 20:46:35,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-15 20:46:35,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:46:35,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 20:46:35,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 20:46:35,720 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:46:35,720 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 20:46:35,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375052446] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 20:46:35,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 20:46:35,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-10-15 20:46:35,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790932101] [2022-10-15 20:46:35,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 20:46:35,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 20:46:35,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:46:35,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 20:46:35,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-15 20:46:35,724 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:46:35,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:46:35,754 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2022-10-15 20:46:35,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 20:46:35,755 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-10-15 20:46:35,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:46:35,756 INFO L225 Difference]: With dead ends: 31 [2022-10-15 20:46:35,756 INFO L226 Difference]: Without dead ends: 30 [2022-10-15 20:46:35,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-15 20:46:35,759 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 20:46:35,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 38 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 20:46:35,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-10-15 20:46:35,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2022-10-15 20:46:35,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 26 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:46:35,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2022-10-15 20:46:35,768 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 13 [2022-10-15 20:46:35,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:46:35,768 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2022-10-15 20:46:35,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:46:35,769 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2022-10-15 20:46:35,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-10-15 20:46:35,770 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:46:35,770 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:46:35,802 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-10-15 20:46:35,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-10-15 20:46:35,985 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-15 20:46:35,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:46:35,989 INFO L85 PathProgramCache]: Analyzing trace with hash 106530990, now seen corresponding path program 2 times [2022-10-15 20:46:35,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:46:35,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392671883] [2022-10-15 20:46:35,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:46:35,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:46:36,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:46:36,311 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:46:36,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:46:36,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392671883] [2022-10-15 20:46:36,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392671883] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 20:46:36,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658422372] [2022-10-15 20:46:36,313 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 20:46:36,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:46:36,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:46:36,315 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 20:46:36,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-15 20:46:36,403 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 20:46:36,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 20:46:36,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-15 20:46:36,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 20:46:36,485 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:46:36,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 20:46:36,687 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:46:36,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658422372] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 20:46:36,688 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 20:46:36,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-10-15 20:46:36,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773843802] [2022-10-15 20:46:36,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 20:46:36,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-10-15 20:46:36,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:46:36,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-10-15 20:46:36,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2022-10-15 20:46:36,692 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 24 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 24 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:46:36,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:46:36,994 INFO L93 Difference]: Finished difference Result 127 states and 144 transitions. [2022-10-15 20:46:36,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-10-15 20:46:36,995 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 24 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-10-15 20:46:36,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:46:36,998 INFO L225 Difference]: With dead ends: 127 [2022-10-15 20:46:36,998 INFO L226 Difference]: Without dead ends: 126 [2022-10-15 20:46:37,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=332, Invalid=790, Unknown=0, NotChecked=0, Total=1122 [2022-10-15 20:46:37,001 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 200 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 20:46:37,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 185 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 20:46:37,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-10-15 20:46:37,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 45. [2022-10-15 20:46:37,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 44 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:46:37,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2022-10-15 20:46:37,020 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 21 [2022-10-15 20:46:37,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:46:37,021 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2022-10-15 20:46:37,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 24 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:46:37,022 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2022-10-15 20:46:37,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-10-15 20:46:37,024 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:46:37,024 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:46:37,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-15 20:46:37,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:46:37,239 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-15 20:46:37,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:46:37,240 INFO L85 PathProgramCache]: Analyzing trace with hash -62890290, now seen corresponding path program 3 times [2022-10-15 20:46:37,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:46:37,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145390183] [2022-10-15 20:46:37,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:46:37,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:46:37,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:46:38,043 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:46:38,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:46:38,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145390183] [2022-10-15 20:46:38,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145390183] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 20:46:38,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826342043] [2022-10-15 20:46:38,045 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 20:46:38,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:46:38,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:46:38,056 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 20:46:38,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-15 20:46:38,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-10-15 20:46:38,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 20:46:38,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 23 conjunts are in the unsatisfiable core [2022-10-15 20:46:38,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 20:46:38,318 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:46:38,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 20:46:38,987 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:46:38,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826342043] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 20:46:38,988 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 20:46:38,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2022-10-15 20:46:38,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737035514] [2022-10-15 20:46:38,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 20:46:38,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-10-15 20:46:38,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:46:38,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-10-15 20:46:38,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2022-10-15 20:46:38,993 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. Second operand has 48 states, 47 states have (on average 1.6170212765957446) internal successors, (76), 48 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:46:39,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:46:39,749 INFO L93 Difference]: Finished difference Result 259 states and 294 transitions. [2022-10-15 20:46:39,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-10-15 20:46:39,753 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.6170212765957446) internal successors, (76), 48 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-10-15 20:46:39,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:46:39,764 INFO L225 Difference]: With dead ends: 259 [2022-10-15 20:46:39,764 INFO L226 Difference]: Without dead ends: 258 [2022-10-15 20:46:39,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1048 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1382, Invalid=3448, Unknown=0, NotChecked=0, Total=4830 [2022-10-15 20:46:39,772 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 492 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 20:46:39,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 310 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 20:46:39,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-10-15 20:46:39,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 81. [2022-10-15 20:46:39,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.3125) internal successors, (105), 80 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:46:39,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 105 transitions. [2022-10-15 20:46:39,800 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 105 transitions. Word has length 39 [2022-10-15 20:46:39,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:46:39,800 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 105 transitions. [2022-10-15 20:46:39,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.6170212765957446) internal successors, (76), 48 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:46:39,801 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 105 transitions. [2022-10-15 20:46:39,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-10-15 20:46:39,804 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:46:39,804 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:46:39,840 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-10-15 20:46:40,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:46:40,019 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-15 20:46:40,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:46:40,020 INFO L85 PathProgramCache]: Analyzing trace with hash -497536242, now seen corresponding path program 4 times [2022-10-15 20:46:40,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:46:40,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685346718] [2022-10-15 20:46:40,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:46:40,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:46:40,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:46:42,112 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:46:42,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:46:42,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685346718] [2022-10-15 20:46:42,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685346718] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 20:46:42,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453656209] [2022-10-15 20:46:42,113 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-15 20:46:42,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:46:42,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:46:42,118 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 20:46:42,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-15 20:46:42,252 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-15 20:46:42,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 20:46:42,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 47 conjunts are in the unsatisfiable core [2022-10-15 20:46:42,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 20:46:42,496 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:46:42,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 20:46:44,654 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:46:44,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453656209] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 20:46:44,654 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 20:46:44,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 95 [2022-10-15 20:46:44,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321660109] [2022-10-15 20:46:44,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 20:46:44,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-10-15 20:46:44,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:46:44,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-10-15 20:46:44,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2351, Invalid=6769, Unknown=0, NotChecked=0, Total=9120 [2022-10-15 20:46:44,676 INFO L87 Difference]: Start difference. First operand 81 states and 105 transitions. Second operand has 96 states, 95 states have (on average 1.5578947368421052) internal successors, (148), 96 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:46:47,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:46:47,095 INFO L93 Difference]: Finished difference Result 523 states and 594 transitions. [2022-10-15 20:46:47,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-10-15 20:46:47,096 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 1.5578947368421052) internal successors, (148), 96 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-10-15 20:46:47,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:46:47,105 INFO L225 Difference]: With dead ends: 523 [2022-10-15 20:46:47,105 INFO L226 Difference]: Without dead ends: 522 [2022-10-15 20:46:47,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4408 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=5642, Invalid=14380, Unknown=0, NotChecked=0, Total=20022 [2022-10-15 20:46:47,115 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 1376 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1376 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-15 20:46:47,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1376 Valid, 480 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-15 20:46:47,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2022-10-15 20:46:47,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 153. [2022-10-15 20:46:47,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.3223684210526316) internal successors, (201), 152 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:46:47,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 201 transitions. [2022-10-15 20:46:47,181 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 201 transitions. Word has length 75 [2022-10-15 20:46:47,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:46:47,182 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 201 transitions. [2022-10-15 20:46:47,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 1.5578947368421052) internal successors, (148), 96 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:46:47,186 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 201 transitions. [2022-10-15 20:46:47,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-10-15 20:46:47,191 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:46:47,192 INFO L195 NwaCegarLoop]: trace histogram [47, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:46:47,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-15 20:46:47,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:46:47,398 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-15 20:46:47,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:46:47,400 INFO L85 PathProgramCache]: Analyzing trace with hash -211256434, now seen corresponding path program 5 times [2022-10-15 20:46:47,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:46:47,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621193416] [2022-10-15 20:46:47,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:46:47,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:46:47,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:46:54,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3197 backedges. 0 proven. 3197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:46:54,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:46:54,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621193416] [2022-10-15 20:46:54,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621193416] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 20:46:54,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180514277] [2022-10-15 20:46:54,087 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-15 20:46:54,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:46:54,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:46:54,088 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 20:46:54,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-15 20:46:54,428 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2022-10-15 20:46:54,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 20:46:54,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 95 conjunts are in the unsatisfiable core [2022-10-15 20:46:54,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 20:46:54,817 INFO L134 CoverageAnalysis]: Checked inductivity of 3197 backedges. 0 proven. 3197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:46:54,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 20:47:03,513 INFO L134 CoverageAnalysis]: Checked inductivity of 3197 backedges. 0 proven. 3197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:47:03,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180514277] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 20:47:03,513 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 20:47:03,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 191 [2022-10-15 20:47:03,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449235976] [2022-10-15 20:47:03,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 20:47:03,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-10-15 20:47:03,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:47:03,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-10-15 20:47:03,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9311, Invalid=27361, Unknown=0, NotChecked=0, Total=36672 [2022-10-15 20:47:03,529 INFO L87 Difference]: Start difference. First operand 153 states and 201 transitions. Second operand has 192 states, 191 states have (on average 1.5287958115183247) internal successors, (292), 192 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:47:14,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:47:14,355 INFO L93 Difference]: Finished difference Result 1051 states and 1194 transitions. [2022-10-15 20:47:14,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2022-10-15 20:47:14,356 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 1.5287958115183247) internal successors, (292), 192 states have internal predecessors, (292), 0 states have call successors, (0), 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 147 [2022-10-15 20:47:14,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:47:14,364 INFO L225 Difference]: With dead ends: 1051 [2022-10-15 20:47:14,364 INFO L226 Difference]: Without dead ends: 1050 [2022-10-15 20:47:14,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18040 ImplicationChecksByTransitivity, 17.3s TimeCoverageRelationStatistics Valid=22802, Invalid=58708, Unknown=0, NotChecked=0, Total=81510 [2022-10-15 20:47:14,379 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 3511 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3511 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-15 20:47:14,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3511 Valid, 932 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-15 20:47:14,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2022-10-15 20:47:14,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 297. [2022-10-15 20:47:14,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 1.3277027027027026) internal successors, (393), 296 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:47:14,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 393 transitions. [2022-10-15 20:47:14,431 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 393 transitions. Word has length 147 [2022-10-15 20:47:14,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:47:14,433 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 393 transitions. [2022-10-15 20:47:14,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 1.5287958115183247) internal successors, (292), 192 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:47:14,434 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 393 transitions. [2022-10-15 20:47:14,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-10-15 20:47:14,452 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:47:14,452 INFO L195 NwaCegarLoop]: trace histogram [95, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:47:14,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-15 20:47:14,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:47:14,667 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-15 20:47:14,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:47:14,667 INFO L85 PathProgramCache]: Analyzing trace with hash 46894222, now seen corresponding path program 6 times [2022-10-15 20:47:14,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:47:14,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268011494] [2022-10-15 20:47:14,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:47:14,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:47:14,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat