/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/loop-new/gauss_sum.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 14:33:24,091 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 14:33:24,095 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 14:33:24,152 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-10-16 14:33:24,194 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 14:33:24,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 14:33:24,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 14:33:24,200 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 14:33:24,201 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 14:33:24,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 14:33:24,206 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 14:33:24,213 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 14:33:24,219 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 14:33:24,220 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 14:33:24,222 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 14:33:24,224 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 14:33:24,234 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-16 14:33:24,245 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 14:33:24,246 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 14:33:24,247 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 14:33:24,248 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-16 14:33:24,294 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 14:33:24,295 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 14:33:24,295 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 14:33:24,295 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 14:33:24,296 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 14:33:24,296 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 14:33:24,297 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 14:33:24,297 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 14:33:24,297 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 14:33:24,298 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 14:33:24,298 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 14:33:24,298 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 14:33:24,298 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 14:33:24,299 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 14:33:24,299 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 14:33:24,299 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 14:33:24,299 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 14:33:24,299 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 14:33:24,300 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 14:33:24,300 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 14:33:24,300 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 14:33:24,300 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 14:33:24,300 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 14:33:24,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 14:33:24,301 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 14:33:24,301 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 14:33:24,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 14:33:24,301 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 14:33:24,302 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 14:33:24,302 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 14:33:24,302 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 14:33:24,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 14:33:24,302 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 14:33:24,303 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 14:33:24,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 14:33:24,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 14:33:24,703 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 14:33:24,704 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 14:33:24,705 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 14:33:24,706 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-new/gauss_sum.i.v+cfa-reducer.c [2022-10-16 14:33:24,790 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40f66d61e/fb783362b7f64b9d851b3b4526a81888/FLAG2f7428507 [2022-10-16 14:33:25,447 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 14:33:25,448 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-new/gauss_sum.i.v+cfa-reducer.c [2022-10-16 14:33:25,456 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40f66d61e/fb783362b7f64b9d851b3b4526a81888/FLAG2f7428507 [2022-10-16 14:33:25,807 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40f66d61e/fb783362b7f64b9d851b3b4526a81888 [2022-10-16 14:33:25,810 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 14:33:25,816 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 14:33:25,818 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 14:33:25,818 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 14:33:25,823 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 14:33:25,824 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:33:25" (1/1) ... [2022-10-16 14:33:25,826 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10612f19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:25, skipping insertion in model container [2022-10-16 14:33:25,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:33:25" (1/1) ... [2022-10-16 14:33:25,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 14:33:25,858 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 14:33:26,069 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-new/gauss_sum.i.v+cfa-reducer.c[1014,1027] [2022-10-16 14:33:26,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 14:33:26,081 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 14:33:26,101 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-new/gauss_sum.i.v+cfa-reducer.c[1014,1027] [2022-10-16 14:33:26,102 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 14:33:26,118 INFO L208 MainTranslator]: Completed translation [2022-10-16 14:33:26,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:26 WrapperNode [2022-10-16 14:33:26,119 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 14:33:26,120 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 14:33:26,120 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 14:33:26,121 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 14:33:26,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:26" (1/1) ... [2022-10-16 14:33:26,138 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:26" (1/1) ... [2022-10-16 14:33:26,160 INFO L138 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 52 [2022-10-16 14:33:26,160 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 14:33:26,161 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 14:33:26,161 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 14:33:26,161 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 14:33:26,172 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:26" (1/1) ... [2022-10-16 14:33:26,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:26" (1/1) ... [2022-10-16 14:33:26,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:26" (1/1) ... [2022-10-16 14:33:26,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:26" (1/1) ... [2022-10-16 14:33:26,177 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:26" (1/1) ... [2022-10-16 14:33:26,179 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:26" (1/1) ... [2022-10-16 14:33:26,180 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:26" (1/1) ... [2022-10-16 14:33:26,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:26" (1/1) ... [2022-10-16 14:33:26,183 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 14:33:26,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 14:33:26,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 14:33:26,184 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 14:33:26,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:26" (1/1) ... [2022-10-16 14:33:26,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 14:33:26,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:33:26,221 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-16 14:33:26,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-16 14:33:26,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 14:33:26,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 14:33:26,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 14:33:26,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 14:33:26,380 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 14:33:26,384 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 14:33:26,547 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 14:33:26,555 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 14:33:26,555 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-16 14:33:26,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:33:26 BoogieIcfgContainer [2022-10-16 14:33:26,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 14:33:26,561 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 14:33:26,561 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 14:33:26,565 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 14:33:26,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:33:25" (1/3) ... [2022-10-16 14:33:26,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48d1cdd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:33:26, skipping insertion in model container [2022-10-16 14:33:26,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:33:26" (2/3) ... [2022-10-16 14:33:26,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48d1cdd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:33:26, skipping insertion in model container [2022-10-16 14:33:26,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:33:26" (3/3) ... [2022-10-16 14:33:26,568 INFO L112 eAbstractionObserver]: Analyzing ICFG gauss_sum.i.v+cfa-reducer.c [2022-10-16 14:33:26,591 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 14:33:26,592 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-10-16 14:33:26,654 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 14:33:26,663 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;@367094c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 14:33:26,663 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-10-16 14:33:26,669 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 28 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:33:26,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-16 14:33:26,676 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:33:26,677 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-16 14:33:26,677 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-16 14:33:26,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:33:26,684 INFO L85 PathProgramCache]: Analyzing trace with hash 889571305, now seen corresponding path program 1 times [2022-10-16 14:33:26,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:33:26,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309296870] [2022-10-16 14:33:26,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:33:26,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:33:26,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:33:27,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:33:27,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:33:27,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309296870] [2022-10-16 14:33:27,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309296870] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:33:27,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:33:27,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 14:33:27,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661163319] [2022-10-16 14:33:27,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:33:27,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 14:33:27,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:33:27,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 14:33:27,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 14:33:27,056 INFO L87 Difference]: Start difference. First operand has 29 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 28 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:33:27,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:33:27,131 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2022-10-16 14:33:27,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 14:33:27,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-16 14:33:27,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:33:27,146 INFO L225 Difference]: With dead ends: 52 [2022-10-16 14:33:27,146 INFO L226 Difference]: Without dead ends: 34 [2022-10-16 14:33:27,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 14:33:27,155 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 14 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:33:27,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 38 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:33:27,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-10-16 14:33:27,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2022-10-16 14:33:27,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:33:27,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2022-10-16 14:33:27,197 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2022-10-16 14:33:27,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:33:27,198 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2022-10-16 14:33:27,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:33:27,199 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2022-10-16 14:33:27,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-16 14:33:27,199 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:33:27,200 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:33:27,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 14:33:27,200 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-16 14:33:27,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:33:27,201 INFO L85 PathProgramCache]: Analyzing trace with hash 179533803, now seen corresponding path program 1 times [2022-10-16 14:33:27,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:33:27,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602677995] [2022-10-16 14:33:27,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:33:27,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:33:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:33:27,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:33:27,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:33:27,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602677995] [2022-10-16 14:33:27,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602677995] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:33:27,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:33:27,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 14:33:27,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218074846] [2022-10-16 14:33:27,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:33:27,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 14:33:27,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:33:27,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 14:33:27,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 14:33:27,281 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:33:27,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:33:27,333 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2022-10-16 14:33:27,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 14:33:27,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-10-16 14:33:27,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:33:27,337 INFO L225 Difference]: With dead ends: 38 [2022-10-16 14:33:27,338 INFO L226 Difference]: Without dead ends: 36 [2022-10-16 14:33:27,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 14:33:27,342 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 9 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:33:27,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 28 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:33:27,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-10-16 14:33:27,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2022-10-16 14:33:27,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 29 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:33:27,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2022-10-16 14:33:27,361 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 8 [2022-10-16 14:33:27,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:33:27,361 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2022-10-16 14:33:27,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:33:27,362 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2022-10-16 14:33:27,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-16 14:33:27,364 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:33:27,365 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:33:27,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 14:33:27,366 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-16 14:33:27,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:33:27,367 INFO L85 PathProgramCache]: Analyzing trace with hash 179841643, now seen corresponding path program 1 times [2022-10-16 14:33:27,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:33:27,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438003349] [2022-10-16 14:33:27,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:33:27,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:33:27,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:33:27,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:33:27,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:33:27,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438003349] [2022-10-16 14:33:27,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438003349] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:33:27,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:33:27,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 14:33:27,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142800494] [2022-10-16 14:33:27,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:33:27,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 14:33:27,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:33:27,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 14:33:27,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 14:33:27,443 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:33:27,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:33:27,505 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2022-10-16 14:33:27,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 14:33:27,506 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-10-16 14:33:27,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:33:27,509 INFO L225 Difference]: With dead ends: 35 [2022-10-16 14:33:27,509 INFO L226 Difference]: Without dead ends: 27 [2022-10-16 14:33:27,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 14:33:27,515 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 23 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:33:27,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 17 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:33:27,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-10-16 14:33:27,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-10-16 14:33:27,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 26 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:33:27,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2022-10-16 14:33:27,527 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 8 [2022-10-16 14:33:27,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:33:27,528 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2022-10-16 14:33:27,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:33:27,530 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2022-10-16 14:33:27,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-16 14:33:27,530 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:33:27,531 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:33:27,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-16 14:33:27,531 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-16 14:33:27,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:33:27,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1257295021, now seen corresponding path program 1 times [2022-10-16 14:33:27,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:33:27,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010234417] [2022-10-16 14:33:27,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:33:27,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:33:27,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:33:27,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:33:27,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:33:27,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010234417] [2022-10-16 14:33:27,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010234417] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:33:27,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835761566] [2022-10-16 14:33:27,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:33:27,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:33:27,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:33:27,675 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:33:27,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-16 14:33:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:33:27,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 14:33:27,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:33:27,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:33:27,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:33:27,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:33:27,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835761566] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:33:27,904 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:33:27,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2022-10-16 14:33:27,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758460853] [2022-10-16 14:33:27,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:33:27,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-16 14:33:27,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:33:27,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-16 14:33:27,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=60, Unknown=0, NotChecked=0, Total=110 [2022-10-16 14:33:27,910 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 11 states, 10 states have (on average 2.7) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:33:28,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:33:28,095 INFO L93 Difference]: Finished difference Result 56 states and 57 transitions. [2022-10-16 14:33:28,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-16 14:33:28,096 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.7) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-10-16 14:33:28,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:33:28,097 INFO L225 Difference]: With dead ends: 56 [2022-10-16 14:33:28,097 INFO L226 Difference]: Without dead ends: 54 [2022-10-16 14:33:28,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=84, Unknown=0, NotChecked=0, Total=156 [2022-10-16 14:33:28,103 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 54 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:33:28,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 39 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:33:28,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-10-16 14:33:28,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 35. [2022-10-16 14:33:28,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 34 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:33:28,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2022-10-16 14:33:28,122 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 11 [2022-10-16 14:33:28,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:33:28,122 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2022-10-16 14:33:28,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.7) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:33:28,123 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2022-10-16 14:33:28,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-16 14:33:28,123 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:33:28,124 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:33:28,157 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-10-16 14:33:28,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:33:28,341 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-16 14:33:28,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:33:28,343 INFO L85 PathProgramCache]: Analyzing trace with hash 321440037, now seen corresponding path program 1 times [2022-10-16 14:33:28,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:33:28,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488230279] [2022-10-16 14:33:28,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:33:28,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:33:28,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:33:28,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:33:28,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:33:28,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488230279] [2022-10-16 14:33:28,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488230279] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:33:28,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238280736] [2022-10-16 14:33:28,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:33:28,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:33:28,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:33:28,489 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:33:28,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-16 14:33:28,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:33:28,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 14:33:28,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:33:28,645 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:33:28,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 14:33:28,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238280736] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:33:28,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 14:33:28,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2022-10-16 14:33:28,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004475021] [2022-10-16 14:33:28,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:33:28,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 14:33:28,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:33:28,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 14:33:28,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-10-16 14:33:28,648 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:33:28,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:33:28,702 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2022-10-16 14:33:28,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 14:33:28,702 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-10-16 14:33:28,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:33:28,703 INFO L225 Difference]: With dead ends: 35 [2022-10-16 14:33:28,704 INFO L226 Difference]: Without dead ends: 32 [2022-10-16 14:33:28,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-10-16 14:33:28,706 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 23 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:33:28,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 14 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:33:28,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-10-16 14:33:28,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-10-16 14:33:28,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 31 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:33:28,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2022-10-16 14:33:28,713 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 12 [2022-10-16 14:33:28,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:33:28,713 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2022-10-16 14:33:28,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:33:28,713 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2022-10-16 14:33:28,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-16 14:33:28,714 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:33:28,714 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:33:28,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-16 14:33:28,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:33:28,929 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-16 14:33:28,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:33:28,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1374706607, now seen corresponding path program 1 times [2022-10-16 14:33:28,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:33:28,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980525359] [2022-10-16 14:33:28,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:33:28,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:33:28,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:33:28,987 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:33:28,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:33:28,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980525359] [2022-10-16 14:33:28,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980525359] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:33:28,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674214254] [2022-10-16 14:33:28,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:33:28,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:33:28,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:33:28,990 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:33:29,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-16 14:33:29,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:33:29,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 14:33:29,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:33:29,067 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:33:29,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:33:29,108 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:33:29,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674214254] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:33:29,109 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:33:29,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-10-16 14:33:29,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125012515] [2022-10-16 14:33:29,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:33:29,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 14:33:29,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:33:29,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 14:33:29,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-10-16 14:33:29,112 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:33:29,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:33:29,168 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2022-10-16 14:33:29,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 14:33:29,168 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-10-16 14:33:29,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:33:29,169 INFO L225 Difference]: With dead ends: 63 [2022-10-16 14:33:29,170 INFO L226 Difference]: Without dead ends: 62 [2022-10-16 14:33:29,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-10-16 14:33:29,171 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 52 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:33:29,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 44 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:33:29,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-10-16 14:33:29,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 39. [2022-10-16 14:33:29,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 38 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:33:29,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2022-10-16 14:33:29,179 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 13 [2022-10-16 14:33:29,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:33:29,180 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2022-10-16 14:33:29,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:33:29,180 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2022-10-16 14:33:29,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-16 14:33:29,181 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:33:29,181 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:33:29,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-16 14:33:29,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:33:29,396 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-16 14:33:29,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:33:29,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1375014447, now seen corresponding path program 1 times [2022-10-16 14:33:29,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:33:29,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281065904] [2022-10-16 14:33:29,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:33:29,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:33:29,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:33:29,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 14:33:29,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:33:29,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281065904] [2022-10-16 14:33:29,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281065904] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:33:29,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:33:29,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 14:33:29,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728687920] [2022-10-16 14:33:29,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:33:29,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 14:33:29,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:33:29,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 14:33:29,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 14:33:29,483 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:33:29,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:33:29,546 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2022-10-16 14:33:29,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 14:33:29,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-10-16 14:33:29,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:33:29,550 INFO L225 Difference]: With dead ends: 39 [2022-10-16 14:33:29,550 INFO L226 Difference]: Without dead ends: 38 [2022-10-16 14:33:29,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 14:33:29,552 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:33:29,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 14 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:33:29,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-10-16 14:33:29,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-10-16 14:33:29,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 37 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:33:29,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2022-10-16 14:33:29,568 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 13 [2022-10-16 14:33:29,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:33:29,569 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2022-10-16 14:33:29,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:33:29,569 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2022-10-16 14:33:29,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-16 14:33:29,572 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:33:29,572 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:33:29,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-16 14:33:29,573 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-16 14:33:29,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:33:29,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1461041551, now seen corresponding path program 1 times [2022-10-16 14:33:29,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:33:29,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693156420] [2022-10-16 14:33:29,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:33:29,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:33:29,600 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 14:33:29,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1265864838] [2022-10-16 14:33:29,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:33:29,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:33:29,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:33:29,605 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:33:29,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-16 14:33:29,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:33:29,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 14:33:29,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:33:29,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 14:33:29,728 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 14:33:29,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:33:29,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693156420] [2022-10-16 14:33:29,729 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 14:33:29,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265864838] [2022-10-16 14:33:29,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265864838] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:33:29,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:33:29,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 14:33:29,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499777990] [2022-10-16 14:33:29,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:33:29,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 14:33:29,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:33:29,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 14:33:29,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 14:33:29,733 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:33:29,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:33:29,744 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2022-10-16 14:33:29,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 14:33:29,745 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-10-16 14:33:29,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:33:29,747 INFO L225 Difference]: With dead ends: 38 [2022-10-16 14:33:29,747 INFO L226 Difference]: Without dead ends: 32 [2022-10-16 14:33:29,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 14:33:29,749 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 17 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:33:29,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 13 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:33:29,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-10-16 14:33:29,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-10-16 14:33:29,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 29 states have (on average 1.206896551724138) internal successors, (35), 31 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:33:29,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2022-10-16 14:33:29,770 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 15 [2022-10-16 14:33:29,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:33:29,770 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2022-10-16 14:33:29,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:33:29,771 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2022-10-16 14:33:29,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-16 14:33:29,773 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:33:29,773 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-10-16 14:33:29,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-16 14:33:29,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:33:29,987 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-16 14:33:29,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:33:29,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1371415465, now seen corresponding path program 1 times [2022-10-16 14:33:29,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:33:29,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733541619] [2022-10-16 14:33:29,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:33:29,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:33:30,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:33:30,103 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:33:30,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:33:30,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733541619] [2022-10-16 14:33:30,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733541619] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:33:30,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714196175] [2022-10-16 14:33:30,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:33:30,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:33:30,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:33:30,106 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:33:30,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-16 14:33:30,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:33:30,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-16 14:33:30,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:33:30,237 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:33:30,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:33:30,296 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:33:30,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714196175] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:33:30,297 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:33:30,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2022-10-16 14:33:30,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508322493] [2022-10-16 14:33:30,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:33:30,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-16 14:33:30,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:33:30,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-16 14:33:30,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=91, Unknown=0, NotChecked=0, Total=156 [2022-10-16 14:33:30,299 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 13 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:33:30,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:33:30,388 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2022-10-16 14:33:30,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 14:33:30,389 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-10-16 14:33:30,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:33:30,389 INFO L225 Difference]: With dead ends: 36 [2022-10-16 14:33:30,390 INFO L226 Difference]: Without dead ends: 33 [2022-10-16 14:33:30,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=121, Unknown=0, NotChecked=0, Total=210 [2022-10-16 14:33:30,391 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 22 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:33:30,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 30 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:33:30,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-10-16 14:33:30,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2022-10-16 14:33:30,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 31 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:33:30,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2022-10-16 14:33:30,396 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 16 [2022-10-16 14:33:30,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:33:30,396 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2022-10-16 14:33:30,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:33:30,397 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2022-10-16 14:33:30,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-10-16 14:33:30,398 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:33:30,398 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2022-10-16 14:33:30,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-16 14:33:30,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:33:30,614 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-16 14:33:30,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:33:30,615 INFO L85 PathProgramCache]: Analyzing trace with hash -808648147, now seen corresponding path program 2 times [2022-10-16 14:33:30,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:33:30,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658698117] [2022-10-16 14:33:30,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:33:30,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:33:30,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:33:30,788 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:33:30,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:33:30,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658698117] [2022-10-16 14:33:30,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658698117] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:33:30,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029852237] [2022-10-16 14:33:30,789 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 14:33:30,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:33:30,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:33:30,795 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:33:30,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-16 14:33:30,842 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 14:33:30,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 14:33:30,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-16 14:33:30,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:33:31,044 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:33:31,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:33:31,203 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:33:31,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029852237] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:33:31,204 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:33:31,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 23 [2022-10-16 14:33:31,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674831061] [2022-10-16 14:33:31,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:33:31,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-10-16 14:33:31,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:33:31,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-10-16 14:33:31,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2022-10-16 14:33:31,207 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 24 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 24 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:33:31,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:33:31,683 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2022-10-16 14:33:31,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-10-16 14:33:31,684 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 24 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-10-16 14:33:31,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:33:31,684 INFO L225 Difference]: With dead ends: 55 [2022-10-16 14:33:31,685 INFO L226 Difference]: Without dead ends: 54 [2022-10-16 14:33:31,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=400, Invalid=932, Unknown=0, NotChecked=0, Total=1332 [2022-10-16 14:33:31,686 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 88 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:33:31,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 28 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:33:31,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-10-16 14:33:31,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 45. [2022-10-16 14:33:31,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 42 states have (on average 1.1904761904761905) internal successors, (50), 44 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:33:31,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2022-10-16 14:33:31,694 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 21 [2022-10-16 14:33:31,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:33:31,694 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2022-10-16 14:33:31,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 24 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:33:31,695 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2022-10-16 14:33:31,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-10-16 14:33:31,695 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:33:31,696 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2022-10-16 14:33:31,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-16 14:33:31,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:33:31,910 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-16 14:33:31,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:33:31,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1045995991, now seen corresponding path program 2 times [2022-10-16 14:33:31,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:33:31,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64737229] [2022-10-16 14:33:31,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:33:31,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:33:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:33:32,077 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:33:32,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:33:32,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64737229] [2022-10-16 14:33:32,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64737229] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:33:32,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670309688] [2022-10-16 14:33:32,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 14:33:32,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:33:32,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:33:32,079 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:33:32,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-16 14:33:32,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 14:33:32,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 14:33:32,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-16 14:33:32,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:33:32,317 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:33:32,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:33:32,485 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:33:32,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670309688] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:33:32,485 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:33:32,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 26 [2022-10-16 14:33:32,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992681059] [2022-10-16 14:33:32,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:33:32,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-10-16 14:33:32,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:33:32,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-10-16 14:33:32,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=521, Unknown=0, NotChecked=0, Total=702 [2022-10-16 14:33:32,488 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand has 27 states, 26 states have (on average 2.769230769230769) internal successors, (72), 27 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:33:32,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:33:32,938 INFO L93 Difference]: Finished difference Result 60 states and 63 transitions. [2022-10-16 14:33:32,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-10-16 14:33:32,939 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.769230769230769) internal successors, (72), 27 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-10-16 14:33:32,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:33:32,940 INFO L225 Difference]: With dead ends: 60 [2022-10-16 14:33:32,940 INFO L226 Difference]: Without dead ends: 55 [2022-10-16 14:33:32,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=514, Invalid=1126, Unknown=0, NotChecked=0, Total=1640 [2022-10-16 14:33:32,942 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 115 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:33:32,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 27 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:33:32,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-10-16 14:33:32,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2022-10-16 14:33:32,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 48 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:33:32,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2022-10-16 14:33:32,949 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 26 [2022-10-16 14:33:32,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:33:32,950 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2022-10-16 14:33:32,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.769230769230769) internal successors, (72), 27 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:33:32,950 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2022-10-16 14:33:32,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-10-16 14:33:32,951 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:33:32,951 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1] [2022-10-16 14:33:32,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-16 14:33:33,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:33:33,166 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-16 14:33:33,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:33:33,167 INFO L85 PathProgramCache]: Analyzing trace with hash -180106005, now seen corresponding path program 2 times [2022-10-16 14:33:33,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:33:33,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032864650] [2022-10-16 14:33:33,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:33:33,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:33:33,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:33:33,214 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-10-16 14:33:33,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:33:33,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032864650] [2022-10-16 14:33:33,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032864650] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:33:33,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96930336] [2022-10-16 14:33:33,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 14:33:33,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:33:33,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:33:33,216 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:33:33,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-16 14:33:33,248 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-16 14:33:33,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 14:33:33,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 14:33:33,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:33:33,278 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-10-16 14:33:33,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:33:33,314 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-10-16 14:33:33,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96930336] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:33:33,315 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:33:33,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-10-16 14:33:33,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165474914] [2022-10-16 14:33:33,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:33:33,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 14:33:33,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:33:33,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 14:33:33,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-16 14:33:33,317 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:33:33,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:33:33,342 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2022-10-16 14:33:33,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 14:33:33,343 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-10-16 14:33:33,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:33:33,344 INFO L225 Difference]: With dead ends: 49 [2022-10-16 14:33:33,344 INFO L226 Difference]: Without dead ends: 48 [2022-10-16 14:33:33,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-10-16 14:33:33,345 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 9 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:33:33,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 10 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:33:33,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-10-16 14:33:33,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2022-10-16 14:33:33,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 47 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:33:33,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2022-10-16 14:33:33,352 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 28 [2022-10-16 14:33:33,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:33:33,353 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2022-10-16 14:33:33,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:33:33,353 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2022-10-16 14:33:33,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-10-16 14:33:33,354 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:33:33,354 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1, 1, 1, 1] [2022-10-16 14:33:33,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-16 14:33:33,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-10-16 14:33:33,568 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-16 14:33:33,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:33:33,569 INFO L85 PathProgramCache]: Analyzing trace with hash 858705197, now seen corresponding path program 3 times [2022-10-16 14:33:33,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:33:33,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859458949] [2022-10-16 14:33:33,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:33:33,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:33:33,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:33:33,953 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:33:33,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:33:33,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859458949] [2022-10-16 14:33:33,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859458949] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:33:33,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322656319] [2022-10-16 14:33:33,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 14:33:33,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:33:33,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:33:33,956 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:33:34,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-16 14:33:34,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-10-16 14:33:34,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 14:33:34,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjunts are in the unsatisfiable core [2022-10-16 14:33:34,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:33:34,572 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:33:34,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:33:35,272 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:33:35,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322656319] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:33:35,273 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:33:35,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 47 [2022-10-16 14:33:35,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435770340] [2022-10-16 14:33:35,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:33:35,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-10-16 14:33:35,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:33:35,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-10-16 14:33:35,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=383, Invalid=1873, Unknown=0, NotChecked=0, Total=2256 [2022-10-16 14:33:35,277 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand has 48 states, 47 states have (on average 2.4893617021276597) internal successors, (117), 48 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:33:39,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:33:39,123 INFO L93 Difference]: Finished difference Result 90 states and 102 transitions. [2022-10-16 14:33:39,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-10-16 14:33:39,124 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.4893617021276597) internal successors, (117), 48 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-10-16 14:33:39,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:33:39,126 INFO L225 Difference]: With dead ends: 90 [2022-10-16 14:33:39,126 INFO L226 Difference]: Without dead ends: 89 [2022-10-16 14:33:39,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2097 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1990, Invalid=5492, Unknown=0, NotChecked=0, Total=7482 [2022-10-16 14:33:39,131 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 388 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 14:33:39,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 31 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-16 14:33:39,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-10-16 14:33:39,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 84. [2022-10-16 14:33:39,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 82 states have (on average 1.1097560975609757) internal successors, (91), 83 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:33:39,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 91 transitions. [2022-10-16 14:33:39,144 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 91 transitions. Word has length 41 [2022-10-16 14:33:39,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:33:39,144 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 91 transitions. [2022-10-16 14:33:39,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.4893617021276597) internal successors, (117), 48 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:33:39,145 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 91 transitions. [2022-10-16 14:33:39,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-10-16 14:33:39,146 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:33:39,146 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2022-10-16 14:33:39,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-16 14:33:39,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-10-16 14:33:39,361 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-16 14:33:39,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:33:39,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1163103447, now seen corresponding path program 3 times [2022-10-16 14:33:39,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:33:39,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952893735] [2022-10-16 14:33:39,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:33:39,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:33:39,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:33:39,750 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:33:39,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:33:39,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952893735] [2022-10-16 14:33:39,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952893735] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:33:39,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005619924] [2022-10-16 14:33:39,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 14:33:39,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:33:39,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:33:39,752 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:33:39,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-16 14:33:39,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-10-16 14:33:39,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 14:33:39,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 19 conjunts are in the unsatisfiable core [2022-10-16 14:33:39,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:33:40,345 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:33:40,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:33:41,147 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:33:41,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005619924] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:33:41,148 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:33:41,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 50 [2022-10-16 14:33:41,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490391307] [2022-10-16 14:33:41,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:33:41,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-10-16 14:33:41,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:33:41,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-10-16 14:33:41,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=2140, Unknown=0, NotChecked=0, Total=2550 [2022-10-16 14:33:41,151 INFO L87 Difference]: Start difference. First operand 84 states and 91 transitions. Second operand has 51 states, 50 states have (on average 2.64) internal successors, (132), 51 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:33:45,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:33:45,880 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2022-10-16 14:33:45,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-10-16 14:33:45,881 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 2.64) internal successors, (132), 51 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-10-16 14:33:45,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:33:45,882 INFO L225 Difference]: With dead ends: 95 [2022-10-16 14:33:45,882 INFO L226 Difference]: Without dead ends: 91 [2022-10-16 14:33:45,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2214 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=2114, Invalid=6258, Unknown=0, NotChecked=0, Total=8372 [2022-10-16 14:33:45,886 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 411 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-16 14:33:45,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 40 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-16 14:33:45,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-10-16 14:33:45,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 88. [2022-10-16 14:33:45,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 86 states have (on average 1.0232558139534884) internal successors, (88), 87 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:33:45,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2022-10-16 14:33:45,899 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 46 [2022-10-16 14:33:45,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:33:45,899 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2022-10-16 14:33:45,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 2.64) internal successors, (132), 51 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:33:45,900 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2022-10-16 14:33:45,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-10-16 14:33:45,902 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:33:45,902 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 15, 1, 1, 1, 1, 1] [2022-10-16 14:33:45,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-16 14:33:46,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-10-16 14:33:46,117 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-16 14:33:46,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:33:46,118 INFO L85 PathProgramCache]: Analyzing trace with hash 389538605, now seen corresponding path program 4 times [2022-10-16 14:33:46,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:33:46,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495224303] [2022-10-16 14:33:46,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:33:46,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:33:46,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:33:47,393 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:33:47,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:33:47,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495224303] [2022-10-16 14:33:47,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495224303] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:33:47,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412651243] [2022-10-16 14:33:47,394 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 14:33:47,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:33:47,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:33:47,397 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:33:47,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-16 14:33:47,454 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 14:33:47,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 14:33:47,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 33 conjunts are in the unsatisfiable core [2022-10-16 14:33:47,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:33:49,776 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:33:49,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:33:52,410 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:33:52,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412651243] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:33:52,411 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:33:52,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 32] total 95 [2022-10-16 14:33:52,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826229140] [2022-10-16 14:33:52,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:33:52,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-10-16 14:33:52,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:33:52,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-10-16 14:33:52,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1639, Invalid=7481, Unknown=0, NotChecked=0, Total=9120 [2022-10-16 14:33:52,417 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand has 96 states, 95 states have (on average 2.4947368421052634) internal successors, (237), 96 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:34:06,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:34:06,207 INFO L93 Difference]: Finished difference Result 195 states and 210 transitions. [2022-10-16 14:34:06,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-10-16 14:34:06,209 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 2.4947368421052634) internal successors, (237), 96 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-10-16 14:34:06,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:34:06,210 INFO L225 Difference]: With dead ends: 195 [2022-10-16 14:34:06,210 INFO L226 Difference]: Without dead ends: 194 [2022-10-16 14:34:06,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5193 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=6577, Invalid=16985, Unknown=0, NotChecked=0, Total=23562 [2022-10-16 14:34:06,218 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 1253 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 658 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1253 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 658 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-16 14:34:06,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1253 Valid, 82 Invalid, 1347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [658 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-10-16 14:34:06,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-10-16 14:34:06,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 164. [2022-10-16 14:34:06,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 162 states have (on average 1.1049382716049383) internal successors, (179), 163 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:34:06,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 179 transitions. [2022-10-16 14:34:06,238 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 179 transitions. Word has length 81 [2022-10-16 14:34:06,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:34:06,239 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 179 transitions. [2022-10-16 14:34:06,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 2.4947368421052634) internal successors, (237), 96 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:34:06,239 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 179 transitions. [2022-10-16 14:34:06,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-10-16 14:34:06,241 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:34:06,241 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1] [2022-10-16 14:34:06,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-16 14:34:06,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-10-16 14:34:06,457 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-16 14:34:06,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:34:06,458 INFO L85 PathProgramCache]: Analyzing trace with hash 2128682281, now seen corresponding path program 4 times [2022-10-16 14:34:06,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:34:06,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431402401] [2022-10-16 14:34:06,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:34:06,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:34:06,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:34:08,073 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:34:08,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:34:08,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431402401] [2022-10-16 14:34:08,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431402401] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:34:08,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801501824] [2022-10-16 14:34:08,074 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 14:34:08,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:34:08,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:34:08,075 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:34:08,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-10-16 14:34:08,132 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 14:34:08,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 14:34:08,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 34 conjunts are in the unsatisfiable core [2022-10-16 14:34:08,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:34:11,270 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:34:11,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:34:15,265 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:34:15,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801501824] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:34:15,265 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:34:15,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33, 33] total 98 [2022-10-16 14:34:15,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880460161] [2022-10-16 14:34:15,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:34:15,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2022-10-16 14:34:15,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:34:15,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2022-10-16 14:34:15,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1744, Invalid=7958, Unknown=0, NotChecked=0, Total=9702 [2022-10-16 14:34:15,271 INFO L87 Difference]: Start difference. First operand 164 states and 179 transitions. Second operand has 99 states, 98 states have (on average 2.5714285714285716) internal successors, (252), 99 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:34:45,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:34:45,222 INFO L93 Difference]: Finished difference Result 188 states and 203 transitions. [2022-10-16 14:34:45,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-10-16 14:34:45,223 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 98 states have (on average 2.5714285714285716) internal successors, (252), 99 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-10-16 14:34:45,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:34:45,224 INFO L225 Difference]: With dead ends: 188 [2022-10-16 14:34:45,224 INFO L226 Difference]: Without dead ends: 171 [2022-10-16 14:34:45,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5656 ImplicationChecksByTransitivity, 36.1s TimeCoverageRelationStatistics Valid=7079, Invalid=18043, Unknown=0, NotChecked=0, Total=25122 [2022-10-16 14:34:45,227 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 1210 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 702 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1210 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 1422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 702 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:34:45,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1210 Valid, 95 Invalid, 1422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [702 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-10-16 14:34:45,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-10-16 14:34:45,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 168. [2022-10-16 14:34:45,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 166 states have (on average 1.0120481927710843) internal successors, (168), 167 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:34:45,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 168 transitions. [2022-10-16 14:34:45,244 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 168 transitions. Word has length 86 [2022-10-16 14:34:45,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:34:45,245 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 168 transitions. [2022-10-16 14:34:45,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 98 states have (on average 2.5714285714285716) internal successors, (252), 99 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:34:45,245 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 168 transitions. [2022-10-16 14:34:45,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-10-16 14:34:45,248 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:34:45,248 INFO L195 NwaCegarLoop]: trace histogram [32, 31, 31, 31, 31, 1, 1, 1, 1, 1] [2022-10-16 14:34:45,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-10-16 14:34:45,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-10-16 14:34:45,462 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-16 14:34:45,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:34:45,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1721757907, now seen corresponding path program 5 times [2022-10-16 14:34:45,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:34:45,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090663274] [2022-10-16 14:34:45,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:34:45,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:34:45,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:34:50,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2387 backedges. 0 proven. 2387 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:34:50,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:34:50,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090663274] [2022-10-16 14:34:50,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090663274] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:34:50,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666379456] [2022-10-16 14:34:50,365 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-16 14:34:50,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:34:50,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:34:50,366 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:34:50,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-10-16 14:34:50,458 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2022-10-16 14:34:50,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 14:34:50,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 65 conjunts are in the unsatisfiable core [2022-10-16 14:34:50,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:35:05,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2387 backedges. 0 proven. 2387 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:35:05,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:35:23,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2387 backedges. 0 proven. 2387 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:35:23,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666379456] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:35:23,160 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:35:23,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 64, 64] total 191 [2022-10-16 14:35:23,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604144679] [2022-10-16 14:35:23,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:35:23,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-10-16 14:35:23,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:35:23,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-10-16 14:35:23,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6095, Invalid=30577, Unknown=0, NotChecked=0, Total=36672 [2022-10-16 14:35:23,168 INFO L87 Difference]: Start difference. First operand 168 states and 168 transitions. Second operand has 192 states, 191 states have (on average 2.4973821989528795) internal successors, (477), 192 states have internal predecessors, (477), 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)