/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_Newton_pseudoconstant.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 20:46:30,373 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 20:46:30,376 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 20:46:30,414 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-10-15 20:46:30,531 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 20:46:30,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 20:46:30,534 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 20:46:30,535 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 20:46:30,593 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 20:46:30,593 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 20:46:30,594 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 20:46:30,595 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 20:46:30,596 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 20:46:30,596 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 20:46:30,599 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 20:46:30,600 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 20:46:30,600 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 20:46:30,600 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 20:46:30,602 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 20:46:30,602 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 20:46:30,602 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 20:46:30,603 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 20:46:30,603 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 20:46:30,603 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-15 20:46:30,603 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 20:46:30,604 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-15 20:46:30,604 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-15 20:46:30,604 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 20:46:30,604 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-15 20:46:30,605 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 20:46:30,605 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-15 20:46:30,605 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 20:46:30,606 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 20:46:30,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 20:46:30,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 20:46:30,607 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 20:46:30,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 20:46:30,607 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-15 20:46:30,607 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 20:46:30,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 20:46:30,608 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-15 20:46:30,609 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 20:46:31,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 20:46:31,094 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 20:46:31,097 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 20:46:31,099 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 20:46:31,099 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 20:46:31,101 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c [2022-10-15 20:46:31,196 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6a6a77e9/ec89f6d701a249038adb2c53f7639fd7/FLAGd62e698b6 [2022-10-15 20:46:31,827 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 20:46:31,828 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c [2022-10-15 20:46:31,836 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6a6a77e9/ec89f6d701a249038adb2c53f7639fd7/FLAGd62e698b6 [2022-10-15 20:46:32,232 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6a6a77e9/ec89f6d701a249038adb2c53f7639fd7 [2022-10-15 20:46:32,236 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 20:46:32,244 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 20:46:32,248 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 20:46:32,249 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 20:46:32,256 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 20:46:32,258 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:46:32" (1/1) ... [2022-10-15 20:46:32,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35e0bb5b 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 20:46:32,260 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:46:32" (1/1) ... [2022-10-15 20:46:32,272 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 20:46:32,295 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 20:46:32,562 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_Newton_pseudoconstant.c[557,570] [2022-10-15 20:46:32,612 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 20:46:32,627 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 20:46:32,647 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_Newton_pseudoconstant.c[557,570] [2022-10-15 20:46:32,674 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 20:46:32,694 INFO L208 MainTranslator]: Completed translation [2022-10-15 20:46:32,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:46:32 WrapperNode [2022-10-15 20:46:32,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 20:46:32,696 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 20:46:32,696 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 20:46:32,696 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 20:46:32,707 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 20:46:32,719 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 20:46:32,757 INFO L138 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 75 [2022-10-15 20:46:32,758 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 20:46:32,759 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 20:46:32,759 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 20:46:32,760 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 20:46:32,772 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 20:46:32,773 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 20:46:32,775 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 20:46:32,775 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 20:46:32,781 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 20:46:32,787 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 20:46:32,788 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 20:46:32,790 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 20:46:32,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 20:46:32,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 20:46:32,794 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 20:46:32,794 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 20:46:32,795 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 20:46:32,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 20:46:32,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:46:32,841 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 20:46:32,863 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 20:46:32,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 20:46:32,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 20:46:32,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 20:46:32,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 20:46:33,028 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 20:46:33,031 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 20:46:33,325 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 20:46:33,333 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 20:46:33,334 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-15 20:46:33,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:46:33 BoogieIcfgContainer [2022-10-15 20:46:33,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 20:46:33,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 20:46:33,357 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 20:46:33,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 20:46:33,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:46:32" (1/3) ... [2022-10-15 20:46:33,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b354c6d 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 20:46:33,395 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 20:46:33,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b354c6d 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 20:46:33,402 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 20:46:33,407 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt_Newton_pseudoconstant.c [2022-10-15 20:46:33,495 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 20:46:33,496 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-15 20:46:33,630 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 20:46:33,644 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;@3d7984eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 20:46:33,645 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-10-15 20:46:33,652 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 20:46:33,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-15 20:46:33,663 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:46:33,664 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:46:33,665 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-15 20:46:33,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:46:33,673 INFO L85 PathProgramCache]: Analyzing trace with hash -332259152, now seen corresponding path program 1 times [2022-10-15 20:46:33,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:46:33,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068521251] [2022-10-15 20:46:33,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:46:33,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:46:33,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:46:33,921 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 20:46:33,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:46:33,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068521251] [2022-10-15 20:46:33,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068521251] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 20:46:33,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 20:46:33,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 20:46:33,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649963667] [2022-10-15 20:46:33,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 20:46:33,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-15 20:46:33,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:46:33,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-15 20:46:33,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-15 20:46:33,988 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 20:46:34,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:46:34,012 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2022-10-15 20:46:34,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-15 20:46:34,015 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 20:46:34,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:46:34,026 INFO L225 Difference]: With dead ends: 42 [2022-10-15 20:46:34,027 INFO L226 Difference]: Without dead ends: 17 [2022-10-15 20:46:34,033 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 20:46:34,039 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 20:46:34,042 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 20:46:34,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-10-15 20:46:34,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-10-15 20:46:34,086 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 20:46:34,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-10-15 20:46:34,089 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 9 [2022-10-15 20:46:34,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:46:34,090 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-10-15 20:46:34,091 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 20:46:34,092 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-10-15 20:46:34,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-15 20:46:34,092 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:46:34,093 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:46:34,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 20:46:34,094 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-15 20:46:34,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:46:34,098 INFO L85 PathProgramCache]: Analyzing trace with hash -275000850, now seen corresponding path program 1 times [2022-10-15 20:46:34,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:46:34,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657736636] [2022-10-15 20:46:34,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:46:34,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:46:34,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:46:34,267 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 20:46:34,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:46:34,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657736636] [2022-10-15 20:46:34,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657736636] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 20:46:34,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 20:46:34,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 20:46:34,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126564985] [2022-10-15 20:46:34,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 20:46:34,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 20:46:34,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:46:34,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 20:46:34,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 20:46:34,273 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 20:46:34,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:46:34,324 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2022-10-15 20:46:34,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 20:46:34,325 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 20:46:34,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:46:34,326 INFO L225 Difference]: With dead ends: 30 [2022-10-15 20:46:34,326 INFO L226 Difference]: Without dead ends: 28 [2022-10-15 20:46:34,327 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 20:46:34,329 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 20:46:34,330 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 20:46:34,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-10-15 20:46:34,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 20. [2022-10-15 20:46:34,339 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 20:46:34,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-10-15 20:46:34,343 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 9 [2022-10-15 20:46:34,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:46:34,344 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-10-15 20:46:34,344 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 20:46:34,344 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-10-15 20:46:34,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-15 20:46:34,346 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:46:34,346 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:46:34,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 20:46:34,347 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-15 20:46:34,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:46:34,348 INFO L85 PathProgramCache]: Analyzing trace with hash -2047622473, now seen corresponding path program 1 times [2022-10-15 20:46:34,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:46:34,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144012376] [2022-10-15 20:46:34,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:46:34,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:46:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:46:34,560 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 20:46:34,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:46:34,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144012376] [2022-10-15 20:46:34,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144012376] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 20:46:34,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700118395] [2022-10-15 20:46:34,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:46:34,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:46:34,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:46:34,564 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 20:46:34,567 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 20:46:34,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:46:34,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-15 20:46:34,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 20:46:34,799 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 20:46:34,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 20:46:34,891 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 20:46:34,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700118395] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 20:46:34,892 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 20:46:34,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-10-15 20:46:34,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807109132] [2022-10-15 20:46:34,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 20:46:34,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-15 20:46:34,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:46:34,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-15 20:46:34,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-10-15 20:46:34,903 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 20:46:35,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:46:35,068 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2022-10-15 20:46:35,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-15 20:46:35,069 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 20:46:35,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:46:35,072 INFO L225 Difference]: With dead ends: 65 [2022-10-15 20:46:35,073 INFO L226 Difference]: Without dead ends: 64 [2022-10-15 20:46:35,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2022-10-15 20:46:35,076 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 20:46:35,077 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 20:46:35,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-10-15 20:46:35,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 28. [2022-10-15 20:46:35,085 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 20:46:35,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2022-10-15 20:46:35,087 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 12 [2022-10-15 20:46:35,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:46:35,087 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2022-10-15 20:46:35,088 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 20:46:35,088 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2022-10-15 20:46:35,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-15 20:46:35,089 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:46:35,089 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:46:35,123 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-10-15 20:46:35,303 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 20:46:35,304 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-15 20:46:35,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:46:35,306 INFO L85 PathProgramCache]: Analyzing trace with hash 948212844, now seen corresponding path program 1 times [2022-10-15 20:46:35,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:46:35,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661496783] [2022-10-15 20:46:35,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:46:35,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:46:35,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:46:35,425 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 20:46:35,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:46:35,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661496783] [2022-10-15 20:46:35,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661496783] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 20:46:35,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281366546] [2022-10-15 20:46:35,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:46:35,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:46:35,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:46:35,428 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 20:46:35,440 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 20:46:35,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:46:35,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 20:46:35,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 20:46:35,528 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 20:46:35,528 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 20:46:35,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281366546] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 20:46:35,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 20:46:35,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-10-15 20:46:35,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312768373] [2022-10-15 20:46:35,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 20:46:35,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 20:46:35,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:46:35,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 20:46:35,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-15 20:46:35,532 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 20:46:35,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:46:35,561 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2022-10-15 20:46:35,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 20:46:35,562 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 20:46:35,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:46:35,563 INFO L225 Difference]: With dead ends: 31 [2022-10-15 20:46:35,563 INFO L226 Difference]: Without dead ends: 30 [2022-10-15 20:46:35,564 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 20:46:35,565 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 20:46:35,566 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 20:46:35,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-10-15 20:46:35,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2022-10-15 20:46:35,572 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 20:46:35,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2022-10-15 20:46:35,573 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 13 [2022-10-15 20:46:35,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:46:35,574 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2022-10-15 20:46:35,574 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 20:46:35,575 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2022-10-15 20:46:35,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-10-15 20:46:35,575 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:46:35,576 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:46:35,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-15 20:46:35,791 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 20:46:35,792 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-15 20:46:35,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:46:35,793 INFO L85 PathProgramCache]: Analyzing trace with hash 106530990, now seen corresponding path program 2 times [2022-10-15 20:46:35,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:46:35,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142186228] [2022-10-15 20:46:35,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:46:35,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:46:35,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:46:36,132 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 20:46:36,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:46:36,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142186228] [2022-10-15 20:46:36,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142186228] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 20:46:36,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997245674] [2022-10-15 20:46:36,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 20:46:36,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:46:36,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:46:36,137 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 20:46:36,163 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 20:46:36,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 20:46:36,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 20:46:36,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-15 20:46:36,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 20:46:36,342 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 20:46:36,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 20:46:36,531 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 20:46:36,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997245674] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 20:46:36,532 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 20:46:36,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-10-15 20:46:36,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082896061] [2022-10-15 20:46:36,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 20:46:36,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-10-15 20:46:36,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:46:36,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-10-15 20:46:36,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2022-10-15 20:46:36,536 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 20:46:36,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:46:36,815 INFO L93 Difference]: Finished difference Result 127 states and 144 transitions. [2022-10-15 20:46:36,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-10-15 20:46:36,816 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 20:46:36,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:46:36,824 INFO L225 Difference]: With dead ends: 127 [2022-10-15 20:46:36,824 INFO L226 Difference]: Without dead ends: 126 [2022-10-15 20:46:36,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=332, Invalid=790, Unknown=0, NotChecked=0, Total=1122 [2022-10-15 20:46:36,832 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 20:46:36,833 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 20:46:36,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-10-15 20:46:36,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 45. [2022-10-15 20:46:36,859 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 20:46:36,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2022-10-15 20:46:36,860 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 21 [2022-10-15 20:46:36,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:46:36,861 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2022-10-15 20:46:36,861 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 20:46:36,861 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2022-10-15 20:46:36,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-10-15 20:46:36,863 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:46:36,863 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:46:36,905 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 20:46:37,076 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 20:46:37,078 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-15 20:46:37,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:46:37,079 INFO L85 PathProgramCache]: Analyzing trace with hash -62890290, now seen corresponding path program 3 times [2022-10-15 20:46:37,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:46:37,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899946706] [2022-10-15 20:46:37,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:46:37,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:46:37,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:46:37,678 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 20:46:37,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:46:37,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899946706] [2022-10-15 20:46:37,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899946706] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 20:46:37,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993690575] [2022-10-15 20:46:37,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 20:46:37,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:46:37,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:46:37,681 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 20:46:37,699 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 20:46:37,790 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-10-15 20:46:37,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 20:46:37,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 23 conjunts are in the unsatisfiable core [2022-10-15 20:46:37,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 20:46:37,940 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 20:46:37,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 20:46:38,548 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 20:46:38,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993690575] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 20:46:38,549 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 20:46:38,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2022-10-15 20:46:38,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100188954] [2022-10-15 20:46:38,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 20:46:38,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-10-15 20:46:38,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:46:38,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-10-15 20:46:38,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2022-10-15 20:46:38,554 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 20:46:39,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:46:39,233 INFO L93 Difference]: Finished difference Result 259 states and 294 transitions. [2022-10-15 20:46:39,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-10-15 20:46:39,242 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 20:46:39,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:46:39,244 INFO L225 Difference]: With dead ends: 259 [2022-10-15 20:46:39,244 INFO L226 Difference]: Without dead ends: 258 [2022-10-15 20:46:39,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1048 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1382, Invalid=3448, Unknown=0, NotChecked=0, Total=4830 [2022-10-15 20:46:39,251 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 20:46:39,252 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 20:46:39,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-10-15 20:46:39,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 81. [2022-10-15 20:46:39,270 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 20:46:39,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 105 transitions. [2022-10-15 20:46:39,272 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 105 transitions. Word has length 39 [2022-10-15 20:46:39,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:46:39,272 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 105 transitions. [2022-10-15 20:46:39,273 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 20:46:39,273 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 105 transitions. [2022-10-15 20:46:39,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-10-15 20:46:39,276 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:46:39,276 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:46:39,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-15 20:46:39,489 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 20:46:39,490 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-15 20:46:39,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:46:39,491 INFO L85 PathProgramCache]: Analyzing trace with hash -497536242, now seen corresponding path program 4 times [2022-10-15 20:46:39,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:46:39,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104766379] [2022-10-15 20:46:39,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:46:39,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:46:39,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:46:41,481 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 20:46:41,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:46:41,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104766379] [2022-10-15 20:46:41,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104766379] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 20:46:41,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438625207] [2022-10-15 20:46:41,482 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-15 20:46:41,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:46:41,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:46:41,484 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 20:46:41,496 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 20:46:41,617 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-15 20:46:41,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 20:46:41,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 47 conjunts are in the unsatisfiable core [2022-10-15 20:46:41,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 20:46:41,821 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 20:46:41,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 20:46:44,030 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 20:46:44,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438625207] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 20:46:44,031 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 20:46:44,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 95 [2022-10-15 20:46:44,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925457480] [2022-10-15 20:46:44,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 20:46:44,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-10-15 20:46:44,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:46:44,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-10-15 20:46:44,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2351, Invalid=6769, Unknown=0, NotChecked=0, Total=9120 [2022-10-15 20:46:44,041 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 20:46:46,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:46:46,398 INFO L93 Difference]: Finished difference Result 523 states and 594 transitions. [2022-10-15 20:46:46,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-10-15 20:46:46,399 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 20:46:46,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:46:46,407 INFO L225 Difference]: With dead ends: 523 [2022-10-15 20:46:46,407 INFO L226 Difference]: Without dead ends: 522 [2022-10-15 20:46:46,418 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 20:46:46,420 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 20:46:46,421 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 20:46:46,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2022-10-15 20:46:46,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 153. [2022-10-15 20:46:46,468 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 20:46:46,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 201 transitions. [2022-10-15 20:46:46,475 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 201 transitions. Word has length 75 [2022-10-15 20:46:46,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:46:46,476 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 201 transitions. [2022-10-15 20:46:46,476 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 20:46:46,477 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 201 transitions. [2022-10-15 20:46:46,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-10-15 20:46:46,486 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:46:46,486 INFO L195 NwaCegarLoop]: trace histogram [47, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:46:46,532 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 20:46:46,705 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 20:46:46,706 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-15 20:46:46,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:46:46,707 INFO L85 PathProgramCache]: Analyzing trace with hash -211256434, now seen corresponding path program 5 times [2022-10-15 20:46:46,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:46:46,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945513832] [2022-10-15 20:46:46,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:46:46,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:46:46,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:46:53,085 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 20:46:53,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:46:53,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945513832] [2022-10-15 20:46:53,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945513832] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 20:46:53,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615915601] [2022-10-15 20:46:53,086 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-15 20:46:53,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:46:53,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:46:53,087 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 20:46:53,091 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 20:46:53,360 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2022-10-15 20:46:53,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 20:46:53,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 95 conjunts are in the unsatisfiable core [2022-10-15 20:46:53,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 20:46:53,673 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 20:46:53,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 20:47:01,724 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 20:47:01,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615915601] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 20:47:01,725 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 20:47:01,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 191 [2022-10-15 20:47:01,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729970696] [2022-10-15 20:47:01,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 20:47:01,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-10-15 20:47:01,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:47:01,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-10-15 20:47:01,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9311, Invalid=27361, Unknown=0, NotChecked=0, Total=36672 [2022-10-15 20:47:01,741 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 20:47:12,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:47:12,717 INFO L93 Difference]: Finished difference Result 1051 states and 1194 transitions. [2022-10-15 20:47:12,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2022-10-15 20:47:12,718 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 20:47:12,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:47:12,724 INFO L225 Difference]: With dead ends: 1051 [2022-10-15 20:47:12,725 INFO L226 Difference]: Without dead ends: 1050 [2022-10-15 20:47:12,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18040 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=22802, Invalid=58708, Unknown=0, NotChecked=0, Total=81510 [2022-10-15 20:47:12,736 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 3511 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2022-10-15 20:47:12,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3511 Valid, 932 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-15 20:47:12,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2022-10-15 20:47:12,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 297. [2022-10-15 20:47:12,777 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 20:47:12,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 393 transitions. [2022-10-15 20:47:12,779 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 393 transitions. Word has length 147 [2022-10-15 20:47:12,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:47:12,785 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 393 transitions. [2022-10-15 20:47:12,786 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 20:47:12,786 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 393 transitions. [2022-10-15 20:47:12,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-10-15 20:47:12,790 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:47:12,791 INFO L195 NwaCegarLoop]: trace histogram [95, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:47:12,837 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 20:47:13,006 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 20:47:13,007 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-15 20:47:13,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:47:13,009 INFO L85 PathProgramCache]: Analyzing trace with hash 46894222, now seen corresponding path program 6 times [2022-10-15 20:47:13,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:47:13,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462798036] [2022-10-15 20:47:13,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:47:13,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:47:13,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat