/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-lit/gsv2008.c.i.p+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 14:30:18,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 14:30:18,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 14:30:18,204 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 14:30:18,204 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 14:30:18,208 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 14:30:18,212 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 14:30:18,230 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 14:30:18,232 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 14:30:18,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 14:30:18,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 14:30:18,242 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 14:30:18,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 14:30:18,245 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 14:30:18,247 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 14:30:18,253 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 14:30:18,254 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 14:30:18,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 14:30:18,259 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 14:30:18,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 14:30:18,268 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 14:30:18,269 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 14:30:18,271 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 14:30:18,273 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 14:30:18,282 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-16 14:30:18,282 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-16 14:30:18,282 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-16 14:30:18,283 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-16 14:30:18,284 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-16 14:30:18,287 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-16 14:30:18,287 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 14:30:18,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 14:30:18,290 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 14:30:18,290 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 14:30:18,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 14:30:18,292 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 14:30:18,292 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 14:30:18,293 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 14:30:18,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 14:30:18,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 14:30:18,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 14:30:18,296 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 14:30:18,348 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 14:30:18,348 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 14:30:18,349 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 14:30:18,349 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 14:30:18,350 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 14:30:18,350 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 14:30:18,350 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 14:30:18,351 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 14:30:18,351 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 14:30:18,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 14:30:18,351 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 14:30:18,352 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 14:30:18,352 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 14:30:18,352 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 14:30:18,352 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 14:30:18,352 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 14:30:18,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 14:30:18,353 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 14:30:18,353 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 14:30:18,353 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 14:30:18,353 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 14:30:18,353 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 14:30:18,354 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 14:30:18,354 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 14:30:18,354 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 14:30:18,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 14:30:18,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 14:30:18,355 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 14:30:18,355 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 14:30:18,355 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 14:30:18,355 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 14:30:18,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 14:30:18,356 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 14:30:18,356 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 14:30:18,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 14:30:18,780 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 14:30:18,783 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 14:30:18,785 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 14:30:18,790 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 14:30:18,791 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/gsv2008.c.i.p+cfa-reducer.c [2022-10-16 14:30:18,867 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f04bf3d49/659f238cc8cc4fb481aea949f10bfcd6/FLAG7bed287ba [2022-10-16 14:30:19,433 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 14:30:19,434 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/gsv2008.c.i.p+cfa-reducer.c [2022-10-16 14:30:19,442 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f04bf3d49/659f238cc8cc4fb481aea949f10bfcd6/FLAG7bed287ba [2022-10-16 14:30:19,795 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f04bf3d49/659f238cc8cc4fb481aea949f10bfcd6 [2022-10-16 14:30:19,798 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 14:30:19,804 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 14:30:19,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 14:30:19,806 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 14:30:19,810 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 14:30:19,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:30:19" (1/1) ... [2022-10-16 14:30:19,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47022939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:19, skipping insertion in model container [2022-10-16 14:30:19,812 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:30:19" (1/1) ... [2022-10-16 14:30:19,820 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 14:30:19,836 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 14:30:20,005 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-lit/gsv2008.c.i.p+cfa-reducer.c[989,1002] [2022-10-16 14:30:20,007 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 14:30:20,017 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 14:30:20,035 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-lit/gsv2008.c.i.p+cfa-reducer.c[989,1002] [2022-10-16 14:30:20,036 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 14:30:20,051 INFO L208 MainTranslator]: Completed translation [2022-10-16 14:30:20,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:20 WrapperNode [2022-10-16 14:30:20,051 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 14:30:20,052 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 14:30:20,053 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 14:30:20,053 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 14:30:20,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:20" (1/1) ... [2022-10-16 14:30:20,068 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:20" (1/1) ... [2022-10-16 14:30:20,087 INFO L138 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 45 [2022-10-16 14:30:20,088 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 14:30:20,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 14:30:20,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 14:30:20,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 14:30:20,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:20" (1/1) ... [2022-10-16 14:30:20,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:20" (1/1) ... [2022-10-16 14:30:20,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:20" (1/1) ... [2022-10-16 14:30:20,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:20" (1/1) ... [2022-10-16 14:30:20,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:20" (1/1) ... [2022-10-16 14:30:20,105 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:20" (1/1) ... [2022-10-16 14:30:20,106 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:20" (1/1) ... [2022-10-16 14:30:20,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:20" (1/1) ... [2022-10-16 14:30:20,108 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 14:30:20,109 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 14:30:20,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 14:30:20,110 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 14:30:20,110 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:20" (1/1) ... [2022-10-16 14:30:20,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 14:30:20,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:30:20,145 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 14:30:20,150 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 14:30:20,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 14:30:20,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 14:30:20,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 14:30:20,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 14:30:20,295 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 14:30:20,298 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 14:30:20,532 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 14:30:20,541 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 14:30:20,541 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-16 14:30:20,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:30:20 BoogieIcfgContainer [2022-10-16 14:30:20,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 14:30:20,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 14:30:20,548 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 14:30:20,552 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 14:30:20,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:30:19" (1/3) ... [2022-10-16 14:30:20,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dea7ade and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:30:20, skipping insertion in model container [2022-10-16 14:30:20,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:20" (2/3) ... [2022-10-16 14:30:20,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dea7ade and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:30:20, skipping insertion in model container [2022-10-16 14:30:20,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:30:20" (3/3) ... [2022-10-16 14:30:20,557 INFO L112 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.p+cfa-reducer.c [2022-10-16 14:30:20,580 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 14:30:20,580 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-10-16 14:30:20,674 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 14:30:20,687 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;@749a07e7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 14:30:20,687 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-10-16 14:30:20,693 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:30:20,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-16 14:30:20,721 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:30:20,722 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-16 14:30:20,723 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-10-16 14:30:20,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:30:20,731 INFO L85 PathProgramCache]: Analyzing trace with hash 889571305, now seen corresponding path program 1 times [2022-10-16 14:30:20,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:30:20,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155035482] [2022-10-16 14:30:20,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:30:20,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:30:20,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:30:21,001 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 14:30:21,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:30:21,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155035482] [2022-10-16 14:30:21,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155035482] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:30:21,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:30:21,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 14:30:21,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349739013] [2022-10-16 14:30:21,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:30:21,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 14:30:21,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:30:21,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 14:30:21,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 14:30:21,051 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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 14:30:21,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:30:21,111 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2022-10-16 14:30:21,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 14:30:21,114 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 14:30:21,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:30:21,125 INFO L225 Difference]: With dead ends: 28 [2022-10-16 14:30:21,125 INFO L226 Difference]: Without dead ends: 16 [2022-10-16 14:30:21,129 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 14:30:21,134 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:30:21,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 14 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:30:21,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-10-16 14:30:21,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2022-10-16 14:30:21,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 14 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 14:30:21,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-10-16 14:30:21,181 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 6 [2022-10-16 14:30:21,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:30:21,182 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-10-16 14:30:21,182 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 14:30:21,182 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-10-16 14:30:21,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-16 14:30:21,183 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:30:21,183 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:30:21,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 14:30:21,184 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-10-16 14:30:21,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:30:21,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1806906729, now seen corresponding path program 1 times [2022-10-16 14:30:21,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:30:21,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864895832] [2022-10-16 14:30:21,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:30:21,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:30:21,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:30:21,266 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 14:30:21,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:30:21,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864895832] [2022-10-16 14:30:21,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864895832] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:30:21,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:30:21,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 14:30:21,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388980541] [2022-10-16 14:30:21,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:30:21,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 14:30:21,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:30:21,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 14:30:21,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 14:30:21,277 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:30:21,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:30:21,355 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2022-10-16 14:30:21,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 14:30:21,358 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-10-16 14:30:21,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:30:21,359 INFO L225 Difference]: With dead ends: 17 [2022-10-16 14:30:21,359 INFO L226 Difference]: Without dead ends: 16 [2022-10-16 14:30:21,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 14:30:21,362 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 4 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:30:21,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 15 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:30:21,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-10-16 14:30:21,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-10-16 14:30:21,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 15 states have internal predecessors, (16), 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 14:30:21,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2022-10-16 14:30:21,373 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2022-10-16 14:30:21,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:30:21,373 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2022-10-16 14:30:21,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:30:21,374 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-10-16 14:30:21,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-16 14:30:21,374 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:30:21,374 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:30:21,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 14:30:21,375 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-10-16 14:30:21,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:30:21,376 INFO L85 PathProgramCache]: Analyzing trace with hash 179533803, now seen corresponding path program 1 times [2022-10-16 14:30:21,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:30:21,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038999848] [2022-10-16 14:30:21,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:30:21,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:30:21,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:30:21,426 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 14:30:21,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:30:21,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038999848] [2022-10-16 14:30:21,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038999848] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:30:21,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:30:21,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 14:30:21,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122696363] [2022-10-16 14:30:21,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:30:21,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 14:30:21,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:30:21,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 14:30:21,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 14:30:21,430 INFO L87 Difference]: Start difference. First operand 16 states and 16 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 14:30:21,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:30:21,455 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-10-16 14:30:21,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 14:30:21,456 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 14:30:21,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:30:21,457 INFO L225 Difference]: With dead ends: 19 [2022-10-16 14:30:21,457 INFO L226 Difference]: Without dead ends: 18 [2022-10-16 14:30:21,458 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 14:30:21,460 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 2 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:30:21,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 10 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:30:21,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-10-16 14:30:21,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2022-10-16 14:30:21,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 16 states have internal predecessors, (17), 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 14:30:21,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2022-10-16 14:30:21,466 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 8 [2022-10-16 14:30:21,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:30:21,467 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2022-10-16 14:30:21,467 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 14:30:21,467 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2022-10-16 14:30:21,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-16 14:30:21,468 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:30:21,468 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:30:21,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-16 14:30:21,469 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-10-16 14:30:21,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:30:21,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1270580651, now seen corresponding path program 1 times [2022-10-16 14:30:21,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:30:21,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801740849] [2022-10-16 14:30:21,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:30:21,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:30:21,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:30:21,589 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 14:30:21,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:30:21,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801740849] [2022-10-16 14:30:21,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801740849] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:30:21,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:30:21,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 14:30:21,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820909387] [2022-10-16 14:30:21,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:30:21,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 14:30:21,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:30:21,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 14:30:21,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 14:30:21,596 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:30:21,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:30:21,632 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2022-10-16 14:30:21,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 14:30:21,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-10-16 14:30:21,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:30:21,634 INFO L225 Difference]: With dead ends: 17 [2022-10-16 14:30:21,634 INFO L226 Difference]: Without dead ends: 16 [2022-10-16 14:30:21,635 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 14:30:21,637 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 3 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:30:21,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 4 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:30:21,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-10-16 14:30:21,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-10-16 14:30:21,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 15 states have internal predecessors, (16), 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 14:30:21,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2022-10-16 14:30:21,652 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 9 [2022-10-16 14:30:21,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:30:21,652 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2022-10-16 14:30:21,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:30:21,655 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-10-16 14:30:21,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-16 14:30:21,655 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:30:21,655 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:30:21,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-16 14:30:21,657 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-10-16 14:30:21,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:30:21,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1257295021, now seen corresponding path program 1 times [2022-10-16 14:30:21,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:30:21,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016185753] [2022-10-16 14:30:21,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:30:21,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:30:21,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:30:21,791 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 14:30:21,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:30:21,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016185753] [2022-10-16 14:30:21,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016185753] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:30:21,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042713897] [2022-10-16 14:30:21,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:30:21,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:30:21,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:30:21,795 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 14:30:21,816 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 14:30:21,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:30:21,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 14:30:21,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:30:22,029 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 14:30:22,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:30:22,115 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 14:30:22,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042713897] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:30:22,116 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:30:22,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2022-10-16 14:30:22,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909592354] [2022-10-16 14:30:22,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:30:22,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-16 14:30:22,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:30:22,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-16 14:30:22,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-10-16 14:30:22,119 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 14 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 14:30:22,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:30:22,359 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2022-10-16 14:30:22,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-16 14:30:22,360 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 14 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) Word has length 11 [2022-10-16 14:30:22,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:30:22,361 INFO L225 Difference]: With dead ends: 34 [2022-10-16 14:30:22,361 INFO L226 Difference]: Without dead ends: 32 [2022-10-16 14:30:22,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=154, Invalid=398, Unknown=0, NotChecked=0, Total=552 [2022-10-16 14:30:22,364 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 37 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:30:22,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 10 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:30:22,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-10-16 14:30:22,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2022-10-16 14:30:22,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 26 states have (on average 1.2307692307692308) 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 14:30:22,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2022-10-16 14:30:22,384 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 11 [2022-10-16 14:30:22,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:30:22,384 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2022-10-16 14:30:22,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 14 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 14:30:22,388 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2022-10-16 14:30:22,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-16 14:30:22,388 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:30:22,389 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:30:22,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-16 14:30:22,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:30:22,590 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-10-16 14:30:22,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:30:22,592 INFO L85 PathProgramCache]: Analyzing trace with hash 321440037, now seen corresponding path program 1 times [2022-10-16 14:30:22,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:30:22,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483650756] [2022-10-16 14:30:22,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:30:22,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:30:22,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:30:22,673 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 14:30:22,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:30:22,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483650756] [2022-10-16 14:30:22,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483650756] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:30:22,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260144878] [2022-10-16 14:30:22,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:30:22,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:30:22,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:30:22,678 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 14:30:22,700 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 14:30:22,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:30:22,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 14:30:22,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:30:22,822 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 14:30:22,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:30:22,880 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 14:30:22,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260144878] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:30:22,881 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:30:22,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2022-10-16 14:30:22,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409882862] [2022-10-16 14:30:22,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:30:22,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-16 14:30:22,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:30:22,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-16 14:30:22,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-10-16 14:30:22,884 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 13 states, 12 states have (on average 2.75) internal successors, (33), 13 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 14:30:23,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:30:23,018 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2022-10-16 14:30:23,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-16 14:30:23,019 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.75) internal successors, (33), 13 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) Word has length 12 [2022-10-16 14:30:23,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:30:23,021 INFO L225 Difference]: With dead ends: 32 [2022-10-16 14:30:23,021 INFO L226 Difference]: Without dead ends: 31 [2022-10-16 14:30:23,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2022-10-16 14:30:23,027 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 25 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:30:23,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 12 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:30:23,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-10-16 14:30:23,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2022-10-16 14:30:23,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 27 states have (on average 1.1481481481481481) 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 14:30:23,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2022-10-16 14:30:23,045 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 12 [2022-10-16 14:30:23,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:30:23,046 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2022-10-16 14:30:23,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.75) internal successors, (33), 13 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 14:30:23,046 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2022-10-16 14:30:23,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-16 14:30:23,050 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:30:23,050 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2022-10-16 14:30:23,084 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 14:30:23,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-10-16 14:30:23,264 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-10-16 14:30:23,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:30:23,265 INFO L85 PathProgramCache]: Analyzing trace with hash -625003925, now seen corresponding path program 1 times [2022-10-16 14:30:23,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:30:23,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427305478] [2022-10-16 14:30:23,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:30:23,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:30:23,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:30:23,384 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:30:23,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:30:23,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427305478] [2022-10-16 14:30:23,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427305478] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:30:23,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213203265] [2022-10-16 14:30:23,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:30:23,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:30:23,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:30:23,395 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 14:30:23,401 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 14:30:23,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:30:23,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 14:30:23,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:30:23,486 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:30:23,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:30:23,540 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:30:23,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213203265] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:30:23,540 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:30:23,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 13 [2022-10-16 14:30:23,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496324360] [2022-10-16 14:30:23,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:30:23,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-16 14:30:23,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:30:23,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-16 14:30:23,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-10-16 14:30:23,543 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 14 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 14:30:23,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:30:23,785 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2022-10-16 14:30:23,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-16 14:30:23,785 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 14 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) Word has length 18 [2022-10-16 14:30:23,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:30:23,787 INFO L225 Difference]: With dead ends: 67 [2022-10-16 14:30:23,787 INFO L226 Difference]: Without dead ends: 66 [2022-10-16 14:30:23,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2022-10-16 14:30:23,788 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 46 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:30:23,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 17 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:30:23,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-10-16 14:30:23,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 56. [2022-10-16 14:30:23,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 53 states have (on average 1.2452830188679245) internal successors, (66), 55 states have internal predecessors, (66), 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 14:30:23,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2022-10-16 14:30:23,798 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 18 [2022-10-16 14:30:23,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:30:23,798 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2022-10-16 14:30:23,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 14 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 14:30:23,799 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2022-10-16 14:30:23,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-10-16 14:30:23,800 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:30:23,800 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2022-10-16 14:30:23,837 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 14:30:24,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:30:24,015 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-10-16 14:30:24,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:30:24,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1045996311, now seen corresponding path program 2 times [2022-10-16 14:30:24,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:30:24,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114047397] [2022-10-16 14:30:24,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:30:24,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:30:24,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:30:24,198 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:30:24,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:30:24,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114047397] [2022-10-16 14:30:24,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114047397] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:30:24,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586316806] [2022-10-16 14:30:24,199 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 14:30:24,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:30:24,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:30:24,200 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 14:30:24,205 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 14:30:24,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 14:30:24,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 14:30:24,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-16 14:30:24,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:30:24,529 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:30:24,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:30:24,826 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:30:24,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586316806] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:30:24,827 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:30:24,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2022-10-16 14:30:24,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917496037] [2022-10-16 14:30:24,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:30:24,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-10-16 14:30:24,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:30:24,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-10-16 14:30:24,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=803, Unknown=0, NotChecked=0, Total=992 [2022-10-16 14:30:24,830 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand has 32 states, 31 states have (on average 2.4516129032258065) internal successors, (76), 32 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:30:26,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:30:26,037 INFO L93 Difference]: Finished difference Result 79 states and 86 transitions. [2022-10-16 14:30:26,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-10-16 14:30:26,037 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.4516129032258065) internal successors, (76), 32 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-10-16 14:30:26,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:30:26,038 INFO L225 Difference]: With dead ends: 79 [2022-10-16 14:30:26,039 INFO L226 Difference]: Without dead ends: 78 [2022-10-16 14:30:26,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1031 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1099, Invalid=3323, Unknown=0, NotChecked=0, Total=4422 [2022-10-16 14:30:26,042 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 199 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 14:30:26,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 19 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 14:30:26,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-10-16 14:30:26,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 69. [2022-10-16 14:30:26,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 66 states have (on average 1.1818181818181819) internal successors, (78), 68 states have internal predecessors, (78), 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 14:30:26,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2022-10-16 14:30:26,053 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 26 [2022-10-16 14:30:26,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:30:26,053 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2022-10-16 14:30:26,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.4516129032258065) internal successors, (76), 32 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:30:26,054 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2022-10-16 14:30:26,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-10-16 14:30:26,055 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:30:26,055 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1] [2022-10-16 14:30:26,095 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 14:30:26,268 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 14:30:26,268 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-10-16 14:30:26,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:30:26,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1933852777, now seen corresponding path program 2 times [2022-10-16 14:30:26,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:30:26,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648215239] [2022-10-16 14:30:26,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:30:26,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:30:26,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:30:26,429 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:30:26,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:30:26,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648215239] [2022-10-16 14:30:26,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648215239] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:30:26,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050070262] [2022-10-16 14:30:26,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 14:30:26,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:30:26,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:30:26,431 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 14:30:26,451 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 14:30:26,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 14:30:26,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 14:30:26,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-16 14:30:26,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:30:26,774 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:30:26,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:30:26,978 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:30:26,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050070262] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:30:26,979 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:30:26,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2022-10-16 14:30:26,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083693152] [2022-10-16 14:30:26,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:30:26,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-10-16 14:30:26,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:30:26,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-10-16 14:30:26,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=709, Unknown=0, NotChecked=0, Total=930 [2022-10-16 14:30:26,982 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand has 31 states, 30 states have (on average 2.6) internal successors, (78), 31 states have internal predecessors, (78), 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 14:30:27,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:30:27,415 INFO L93 Difference]: Finished difference Result 70 states and 78 transitions. [2022-10-16 14:30:27,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-16 14:30:27,415 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.6) internal successors, (78), 31 states have internal predecessors, (78), 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 27 [2022-10-16 14:30:27,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:30:27,416 INFO L225 Difference]: With dead ends: 70 [2022-10-16 14:30:27,417 INFO L226 Difference]: Without dead ends: 69 [2022-10-16 14:30:27,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=439, Invalid=1201, Unknown=0, NotChecked=0, Total=1640 [2022-10-16 14:30:27,419 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 134 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 14:30:27,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 18 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 14:30:27,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-10-16 14:30:27,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-10-16 14:30:27,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 68 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 14:30:27,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2022-10-16 14:30:27,430 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 27 [2022-10-16 14:30:27,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:30:27,431 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2022-10-16 14:30:27,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.6) internal successors, (78), 31 states have internal predecessors, (78), 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 14:30:27,431 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2022-10-16 14:30:27,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-10-16 14:30:27,432 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:30:27,433 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 1, 1, 1, 1, 1] [2022-10-16 14:30:27,475 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 14:30:27,645 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 14:30:27,646 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-10-16 14:30:27,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:30:27,647 INFO L85 PathProgramCache]: Analyzing trace with hash -849972817, now seen corresponding path program 2 times [2022-10-16 14:30:27,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:30:27,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625230039] [2022-10-16 14:30:27,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:30:27,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:30:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:30:28,159 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:30:28,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:30:28,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625230039] [2022-10-16 14:30:28,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625230039] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:30:28,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835935485] [2022-10-16 14:30:28,160 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 14:30:28,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:30:28,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:30:28,162 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 14:30:28,185 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 14:30:28,217 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 14:30:28,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 14:30:28,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-16 14:30:28,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:30:28,478 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:30:28,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:30:28,873 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:30:28,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835935485] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:30:28,874 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:30:28,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 11, 11] total 41 [2022-10-16 14:30:28,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220168848] [2022-10-16 14:30:28,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:30:28,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-10-16 14:30:28,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:30:28,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-10-16 14:30:28,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=1422, Unknown=0, NotChecked=0, Total=1722 [2022-10-16 14:30:28,878 INFO L87 Difference]: Start difference. First operand 69 states and 72 transitions. Second operand has 42 states, 41 states have (on average 3.7804878048780486) internal successors, (155), 42 states have internal predecessors, (155), 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 14:30:30,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:30:30,705 INFO L93 Difference]: Finished difference Result 200 states and 220 transitions. [2022-10-16 14:30:30,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-10-16 14:30:30,706 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 3.7804878048780486) internal successors, (155), 42 states have internal predecessors, (155), 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 53 [2022-10-16 14:30:30,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:30:30,708 INFO L225 Difference]: With dead ends: 200 [2022-10-16 14:30:30,708 INFO L226 Difference]: Without dead ends: 199 [2022-10-16 14:30:30,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1323 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1506, Invalid=6150, Unknown=0, NotChecked=0, Total=7656 [2022-10-16 14:30:30,713 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 188 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-16 14:30:30,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 44 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-16 14:30:30,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-10-16 14:30:30,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 161. [2022-10-16 14:30:30,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 158 states have (on average 1.259493670886076) internal successors, (199), 160 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:30:30,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 199 transitions. [2022-10-16 14:30:30,734 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 199 transitions. Word has length 53 [2022-10-16 14:30:30,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:30:30,734 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 199 transitions. [2022-10-16 14:30:30,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 3.7804878048780486) internal successors, (155), 42 states have internal predecessors, (155), 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 14:30:30,735 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 199 transitions. [2022-10-16 14:30:30,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-10-16 14:30:30,736 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:30:30,736 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 1, 1, 1, 1, 1] [2022-10-16 14:30:30,780 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 14:30:30,951 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 14:30:30,951 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-10-16 14:30:30,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:30:30,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1953579241, now seen corresponding path program 3 times [2022-10-16 14:30:30,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:30:30,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786457078] [2022-10-16 14:30:30,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:30:30,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:30:30,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:30:31,510 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:30:31,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:30:31,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786457078] [2022-10-16 14:30:31,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786457078] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:30:31,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363787714] [2022-10-16 14:30:31,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 14:30:31,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:30:31,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:30:31,512 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 14:30:31,513 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 14:30:31,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-10-16 14:30:31,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 14:30:31,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 23 conjunts are in the unsatisfiable core [2022-10-16 14:30:31,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:30:32,413 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:30:32,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:30:33,253 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:30:33,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363787714] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:30:33,253 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:30:33,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 66 [2022-10-16 14:30:33,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672914276] [2022-10-16 14:30:33,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:30:33,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-10-16 14:30:33,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:30:33,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-10-16 14:30:33,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=887, Invalid=3535, Unknown=0, NotChecked=0, Total=4422 [2022-10-16 14:30:33,258 INFO L87 Difference]: Start difference. First operand 161 states and 199 transitions. Second operand has 67 states, 66 states have (on average 2.5454545454545454) internal successors, (168), 67 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 14:30:36,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:30:36,160 INFO L93 Difference]: Finished difference Result 171 states and 199 transitions. [2022-10-16 14:30:36,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-10-16 14:30:36,161 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 2.5454545454545454) internal successors, (168), 67 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) Word has length 57 [2022-10-16 14:30:36,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:30:36,166 INFO L225 Difference]: With dead ends: 171 [2022-10-16 14:30:36,166 INFO L226 Difference]: Without dead ends: 170 [2022-10-16 14:30:36,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3438 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2692, Invalid=8020, Unknown=0, NotChecked=0, Total=10712 [2022-10-16 14:30:36,174 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 605 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 1751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 1350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-16 14:30:36,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [605 Valid, 27 Invalid, 1751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 1350 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-10-16 14:30:36,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-10-16 14:30:36,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 161. [2022-10-16 14:30:36,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 158 states have (on average 1.1835443037974684) internal successors, (187), 160 states have internal predecessors, (187), 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 14:30:36,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 187 transitions. [2022-10-16 14:30:36,214 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 187 transitions. Word has length 57 [2022-10-16 14:30:36,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:30:36,215 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 187 transitions. [2022-10-16 14:30:36,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 66 states have (on average 2.5454545454545454) internal successors, (168), 67 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 14:30:36,215 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 187 transitions. [2022-10-16 14:30:36,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-10-16 14:30:36,216 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:30:36,216 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 1, 1, 1, 1, 1] [2022-10-16 14:30:36,244 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 14:30:36,430 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 14:30:36,431 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-10-16 14:30:36,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:30:36,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1957361943, now seen corresponding path program 3 times [2022-10-16 14:30:36,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:30:36,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633955821] [2022-10-16 14:30:36,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:30:36,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:30:36,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:30:37,220 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:30:37,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:30:37,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633955821] [2022-10-16 14:30:37,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633955821] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:30:37,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079360502] [2022-10-16 14:30:37,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 14:30:37,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:30:37,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:30:37,222 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 14:30:37,232 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 14:30:37,266 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-10-16 14:30:37,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 14:30:37,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 14:30:37,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:30:37,348 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2022-10-16 14:30:37,348 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 14:30:37,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079360502] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:30:37,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 14:30:37,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [27] total 30 [2022-10-16 14:30:37,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564286566] [2022-10-16 14:30:37,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:30:37,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 14:30:37,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:30:37,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 14:30:37,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=857, Unknown=0, NotChecked=0, Total=930 [2022-10-16 14:30:37,351 INFO L87 Difference]: Start difference. First operand 161 states and 187 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 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 14:30:37,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:30:37,395 INFO L93 Difference]: Finished difference Result 161 states and 187 transitions. [2022-10-16 14:30:37,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 14:30:37,396 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 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 66 [2022-10-16 14:30:37,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:30:37,398 INFO L225 Difference]: With dead ends: 161 [2022-10-16 14:30:37,398 INFO L226 Difference]: Without dead ends: 160 [2022-10-16 14:30:37,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=914, Unknown=0, NotChecked=0, Total=992 [2022-10-16 14:30:37,400 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 12 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:30:37,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 5 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:30:37,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-10-16 14:30:37,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2022-10-16 14:30:37,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 158 states have (on average 1.0632911392405062) internal successors, (168), 159 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 14:30:37,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 168 transitions. [2022-10-16 14:30:37,420 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 168 transitions. Word has length 66 [2022-10-16 14:30:37,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:30:37,421 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 168 transitions. [2022-10-16 14:30:37,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 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 14:30:37,422 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 168 transitions. [2022-10-16 14:30:37,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-10-16 14:30:37,431 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:30:37,431 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 1, 1, 1, 1, 1] [2022-10-16 14:30:37,468 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 14:30:37,645 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 14:30:37,646 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-10-16 14:30:37,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:30:37,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1337958889, now seen corresponding path program 4 times [2022-10-16 14:30:37,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:30:37,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869270744] [2022-10-16 14:30:37,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:30:37,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:30:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:30:39,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:30:39,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:30:39,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869270744] [2022-10-16 14:30:39,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869270744] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:30:39,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64330990] [2022-10-16 14:30:39,508 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 14:30:39,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:30:39,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:30:39,511 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 14:30:39,515 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 14:30:39,594 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 14:30:39,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 14:30:39,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 47 conjunts are in the unsatisfiable core [2022-10-16 14:30:39,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:30:42,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:30:42,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:30:46,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:30:46,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64330990] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:30:46,075 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:30:46,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 138 [2022-10-16 14:30:46,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612533110] [2022-10-16 14:30:46,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:30:46,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 139 states [2022-10-16 14:30:46,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:30:46,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2022-10-16 14:30:46,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3515, Invalid=15667, Unknown=0, NotChecked=0, Total=19182 [2022-10-16 14:30:46,084 INFO L87 Difference]: Start difference. First operand 160 states and 168 transitions. Second operand has 139 states, 138 states have (on average 2.5217391304347827) internal successors, (348), 139 states have internal predecessors, (348), 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 14:30:58,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:30:58,810 INFO L93 Difference]: Finished difference Result 241 states and 278 transitions. [2022-10-16 14:30:58,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-10-16 14:30:58,811 INFO L78 Accepts]: Start accepts. Automaton has has 139 states, 138 states have (on average 2.5217391304347827) internal successors, (348), 139 states have internal predecessors, (348), 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 117 [2022-10-16 14:30:58,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:30:58,813 INFO L225 Difference]: With dead ends: 241 [2022-10-16 14:30:58,813 INFO L226 Difference]: Without dead ends: 240 [2022-10-16 14:30:58,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13871 ImplicationChecksByTransitivity, 15.5s TimeCoverageRelationStatistics Valid=9639, Invalid=31773, Unknown=0, NotChecked=0, Total=41412 [2022-10-16 14:30:58,819 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2065 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 5444 mSolverCounterSat, 1960 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2065 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 7404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1960 IncrementalHoareTripleChecker+Valid, 5444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-10-16 14:30:58,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2065 Valid, 54 Invalid, 7404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1960 Valid, 5444 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-10-16 14:30:58,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-10-16 14:30:58,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 239. [2022-10-16 14:30:58,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 237 states have (on average 1.0717299578059072) internal successors, (254), 238 states have internal predecessors, (254), 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 14:30:58,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 254 transitions. [2022-10-16 14:30:58,844 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 254 transitions. Word has length 117 [2022-10-16 14:30:58,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:30:58,844 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 254 transitions. [2022-10-16 14:30:58,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 139 states, 138 states have (on average 2.5217391304347827) internal successors, (348), 139 states have internal predecessors, (348), 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 14:30:58,847 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 254 transitions. [2022-10-16 14:30:58,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-10-16 14:30:58,851 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:30:58,851 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 30, 30, 1, 1, 1, 1, 1] [2022-10-16 14:30:58,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-10-16 14:30:59,051 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 14:30:59,052 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-10-16 14:30:59,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:30:59,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1070548331, now seen corresponding path program 3 times [2022-10-16 14:30:59,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:30:59,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952888535] [2022-10-16 14:30:59,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:30:59,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:30:59,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:31:02,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2295 backedges. 0 proven. 2295 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:31:02,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:31:02,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952888535] [2022-10-16 14:31:02,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952888535] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:31:02,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912584149] [2022-10-16 14:31:02,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 14:31:02,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:31:02,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:31:02,317 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 14:31:02,325 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 14:31:02,372 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-10-16 14:31:02,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 14:31:02,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-16 14:31:02,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:31:02,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2295 backedges. 441 proven. 18 refuted. 0 times theorem prover too weak. 1836 trivial. 0 not checked. [2022-10-16 14:31:02,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:31:03,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2295 backedges. 441 proven. 18 refuted. 0 times theorem prover too weak. 1836 trivial. 0 not checked. [2022-10-16 14:31:03,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912584149] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:31:03,216 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:31:03,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 7, 7] total 75 [2022-10-16 14:31:03,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599297992] [2022-10-16 14:31:03,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:31:03,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-10-16 14:31:03,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:31:03,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-10-16 14:31:03,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=5239, Unknown=0, NotChecked=0, Total=5700 [2022-10-16 14:31:03,218 INFO L87 Difference]: Start difference. First operand 239 states and 254 transitions. Second operand has 76 states, 75 states have (on average 2.6666666666666665) internal successors, (200), 76 states have internal predecessors, (200), 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 14:31:15,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:31:15,947 INFO L93 Difference]: Finished difference Result 239 states and 254 transitions. [2022-10-16 14:31:15,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-10-16 14:31:15,948 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 75 states have (on average 2.6666666666666665) internal successors, (200), 76 states have internal predecessors, (200), 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 158 [2022-10-16 14:31:15,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:31:15,949 INFO L225 Difference]: With dead ends: 239 [2022-10-16 14:31:15,949 INFO L226 Difference]: Without dead ends: 238 [2022-10-16 14:31:15,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5972 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=5886, Invalid=23184, Unknown=0, NotChecked=0, Total=29070 [2022-10-16 14:31:15,952 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 1008 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 2170 mSolverCounterSat, 755 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 2925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 755 IncrementalHoareTripleChecker+Valid, 2170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-10-16 14:31:15,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1008 Valid, 51 Invalid, 2925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [755 Valid, 2170 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-10-16 14:31:15,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-10-16 14:31:15,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2022-10-16 14:31:15,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.0042194092827004) internal successors, (238), 237 states have internal predecessors, (238), 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 14:31:15,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 238 transitions. [2022-10-16 14:31:15,981 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 238 transitions. Word has length 158 [2022-10-16 14:31:15,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:31:15,981 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 238 transitions. [2022-10-16 14:31:15,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 75 states have (on average 2.6666666666666665) internal successors, (200), 76 states have internal predecessors, (200), 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 14:31:15,981 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 238 transitions. [2022-10-16 14:31:15,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-10-16 14:31:15,983 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:31:15,984 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 46, 1, 1, 1, 1, 1] [2022-10-16 14:31:16,008 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-10-16 14:31:16,188 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 14:31:16,189 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-10-16 14:31:16,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:31:16,190 INFO L85 PathProgramCache]: Analyzing trace with hash 688776169, now seen corresponding path program 5 times [2022-10-16 14:31:16,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:31:16,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015725953] [2022-10-16 14:31:16,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:31:16,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:31:16,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:31:23,531 INFO L134 CoverageAnalysis]: Checked inductivity of 5313 backedges. 0 proven. 5313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:31:23,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:31:23,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015725953] [2022-10-16 14:31:23,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015725953] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:31:23,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566561080] [2022-10-16 14:31:23,532 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-16 14:31:23,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:31:23,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:31:23,536 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 14:31:23,539 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 14:31:23,719 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2022-10-16 14:31:23,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 14:31:23,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 95 conjunts are in the unsatisfiable core [2022-10-16 14:31:23,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:31:35,879 INFO L134 CoverageAnalysis]: Checked inductivity of 5313 backedges. 0 proven. 5313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:31:35,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:31:50,371 INFO L134 CoverageAnalysis]: Checked inductivity of 5313 backedges. 0 proven. 5313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:31:50,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566561080] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:31:50,371 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:31:50,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 282 [2022-10-16 14:31:50,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93376402] [2022-10-16 14:31:50,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:31:50,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 283 states [2022-10-16 14:31:50,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:31:50,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 283 interpolants. [2022-10-16 14:31:50,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13955, Invalid=65851, Unknown=0, NotChecked=0, Total=79806 [2022-10-16 14:31:50,384 INFO L87 Difference]: Start difference. First operand 238 states and 238 transitions. Second operand has 283 states, 282 states have (on average 2.5106382978723403) internal successors, (708), 283 states have internal predecessors, (708), 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 14:33:02,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:33:02,730 INFO L93 Difference]: Finished difference Result 479 states and 526 transitions. [2022-10-16 14:33:02,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2022-10-16 14:33:02,732 INFO L78 Accepts]: Start accepts. Automaton has has 283 states, 282 states have (on average 2.5106382978723403) internal successors, (708), 283 states have internal predecessors, (708), 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 237 [2022-10-16 14:33:02,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:33:02,736 INFO L225 Difference]: With dead ends: 479 [2022-10-16 14:33:02,736 INFO L226 Difference]: Without dead ends: 478 [2022-10-16 14:33:02,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 703 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 417 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60201 ImplicationChecksByTransitivity, 86.9s TimeCoverageRelationStatistics Valid=39793, Invalid=135349, Unknown=0, NotChecked=0, Total=175142 [2022-10-16 14:33:02,749 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 8634 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 20539 mSolverCounterSat, 5686 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8634 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 26225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5686 IncrementalHoareTripleChecker+Valid, 20539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2022-10-16 14:33:02,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8634 Valid, 99 Invalid, 26225 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5686 Valid, 20539 Invalid, 0 Unknown, 0 Unchecked, 12.8s Time] [2022-10-16 14:33:02,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2022-10-16 14:33:02,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 478. [2022-10-16 14:33:02,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 477 states have (on average 1.0020964360587001) internal successors, (478), 477 states have internal predecessors, (478), 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 14:33:02,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 478 transitions. [2022-10-16 14:33:02,837 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 478 transitions. Word has length 237 [2022-10-16 14:33:02,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:33:02,838 INFO L495 AbstractCegarLoop]: Abstraction has 478 states and 478 transitions. [2022-10-16 14:33:02,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 283 states, 282 states have (on average 2.5106382978723403) internal successors, (708), 283 states have internal predecessors, (708), 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 14:33:02,839 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 478 transitions. [2022-10-16 14:33:02,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2022-10-16 14:33:02,847 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:33:02,848 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 94, 94, 94, 1, 1, 1, 1, 1] [2022-10-16 14:33:02,880 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 14:33:03,063 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 14:33:03,063 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-10-16 14:33:03,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:33:03,065 INFO L85 PathProgramCache]: Analyzing trace with hash -311400471, now seen corresponding path program 6 times [2022-10-16 14:33:03,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:33:03,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028096534] [2022-10-16 14:33:03,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:33:03,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:33:03,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:33:32,080 INFO L134 CoverageAnalysis]: Checked inductivity of 22137 backedges. 0 proven. 22137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:33:32,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:33:32,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028096534] [2022-10-16 14:33:32,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028096534] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:33:32,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851396200] [2022-10-16 14:33:32,081 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-10-16 14:33:32,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:33:32,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:33:32,083 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 14:33:32,084 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 14:33:32,623 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2022-10-16 14:33:32,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 14:33:32,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 1072 conjuncts, 191 conjunts are in the unsatisfiable core [2022-10-16 14:33:32,643 INFO L286 TraceCheckSpWp]: Computing forward predicates...