/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/array-examples/standard_compareModified_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 20:10:43,152 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 20:10:43,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 20:10:43,194 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 20:10:43,194 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 20:10:43,196 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 20:10:43,198 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 20:10:43,200 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 20:10:43,203 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 20:10:43,204 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 20:10:43,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 20:10:43,207 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 20:10:43,208 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 20:10:43,209 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 20:10:43,210 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 20:10:43,212 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 20:10:43,213 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 20:10:43,214 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 20:10:43,216 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 20:10:43,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 20:10:43,221 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 20:10:43,223 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 20:10:43,224 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 20:10:43,225 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 20:10:43,232 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-15 20:10:43,240 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 20:10:43,244 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 20:10:43,245 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 20:10:43,246 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 20:10:43,248 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 20:10:43,248 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 20:10:43,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 20:10:43,249 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 20:10:43,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 20:10:43,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 20:10:43,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 20:10:43,254 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-15 20:10:43,284 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 20:10:43,284 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 20:10:43,285 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 20:10:43,285 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 20:10:43,286 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 20:10:43,286 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 20:10:43,287 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 20:10:43,287 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 20:10:43,287 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 20:10:43,288 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 20:10:43,288 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 20:10:43,288 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 20:10:43,288 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 20:10:43,288 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 20:10:43,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 20:10:43,289 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-15 20:10:43,289 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 20:10:43,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-15 20:10:43,289 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-15 20:10:43,290 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 20:10:43,290 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-15 20:10:43,290 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 20:10:43,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-15 20:10:43,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 20:10:43,291 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 20:10:43,291 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 20:10:43,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 20:10:43,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 20:10:43,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 20:10:43,292 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-15 20:10:43,292 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 20:10:43,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 20:10:43,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-15 20:10:43,292 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 20:10:43,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 20:10:43,763 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 20:10:43,769 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 20:10:43,771 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 20:10:43,771 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 20:10:43,774 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_compareModified_ground.i [2022-10-15 20:10:43,846 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72dd9d7ad/7b4b4496d14247ec98e562c785edbfc5/FLAG830e864dc [2022-10-15 20:10:44,548 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 20:10:44,549 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_compareModified_ground.i [2022-10-15 20:10:44,563 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72dd9d7ad/7b4b4496d14247ec98e562c785edbfc5/FLAG830e864dc [2022-10-15 20:10:44,885 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72dd9d7ad/7b4b4496d14247ec98e562c785edbfc5 [2022-10-15 20:10:44,890 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 20:10:44,901 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 20:10:44,904 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 20:10:44,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 20:10:44,909 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 20:10:44,910 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:10:44" (1/1) ... [2022-10-15 20:10:44,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26d650fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:10:44, skipping insertion in model container [2022-10-15 20:10:44,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:10:44" (1/1) ... [2022-10-15 20:10:44,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 20:10:44,939 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 20:10:45,095 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/array-examples/standard_compareModified_ground.i[824,837] [2022-10-15 20:10:45,117 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 20:10:45,127 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 20:10:45,141 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/array-examples/standard_compareModified_ground.i[824,837] [2022-10-15 20:10:45,152 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 20:10:45,167 INFO L208 MainTranslator]: Completed translation [2022-10-15 20:10:45,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:10:45 WrapperNode [2022-10-15 20:10:45,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 20:10:45,169 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 20:10:45,170 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 20:10:45,170 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 20:10:45,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:10:45" (1/1) ... [2022-10-15 20:10:45,189 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:10:45" (1/1) ... [2022-10-15 20:10:45,225 INFO L138 Inliner]: procedures = 16, calls = 27, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 94 [2022-10-15 20:10:45,227 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 20:10:45,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 20:10:45,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 20:10:45,229 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 20:10:45,241 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:10:45" (1/1) ... [2022-10-15 20:10:45,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:10:45" (1/1) ... [2022-10-15 20:10:45,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:10:45" (1/1) ... [2022-10-15 20:10:45,248 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:10:45" (1/1) ... [2022-10-15 20:10:45,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:10:45" (1/1) ... [2022-10-15 20:10:45,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:10:45" (1/1) ... [2022-10-15 20:10:45,274 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:10:45" (1/1) ... [2022-10-15 20:10:45,275 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:10:45" (1/1) ... [2022-10-15 20:10:45,280 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 20:10:45,281 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 20:10:45,282 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 20:10:45,286 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 20:10:45,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:10:45" (1/1) ... [2022-10-15 20:10:45,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 20:10:45,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:10:45,332 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-15 20:10:45,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-15 20:10:45,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 20:10:45,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 20:10:45,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 20:10:45,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 20:10:45,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 20:10:45,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 20:10:45,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 20:10:45,409 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-15 20:10:45,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-15 20:10:45,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 20:10:45,536 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 20:10:45,539 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 20:10:45,861 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 20:10:45,871 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 20:10:45,871 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-10-15 20:10:45,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:10:45 BoogieIcfgContainer [2022-10-15 20:10:45,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 20:10:45,877 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 20:10:45,877 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 20:10:45,882 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 20:10:45,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:10:44" (1/3) ... [2022-10-15 20:10:45,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51a71daa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:10:45, skipping insertion in model container [2022-10-15 20:10:45,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:10:45" (2/3) ... [2022-10-15 20:10:45,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51a71daa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:10:45, skipping insertion in model container [2022-10-15 20:10:45,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:10:45" (3/3) ... [2022-10-15 20:10:45,886 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_compareModified_ground.i [2022-10-15 20:10:45,911 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 20:10:45,912 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-10-15 20:10:46,042 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 20:10:46,057 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;@5e5eefec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 20:10:46,057 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-10-15 20:10:46,063 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 39 states have internal predecessors, (50), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 20:10:46,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-15 20:10:46,071 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:10:46,071 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-15 20:10:46,072 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-15 20:10:46,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:10:46,080 INFO L85 PathProgramCache]: Analyzing trace with hash 28698728, now seen corresponding path program 1 times [2022-10-15 20:10:46,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:10:46,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363302864] [2022-10-15 20:10:46,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:46,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:10:46,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:46,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:10:46,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:10:46,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363302864] [2022-10-15 20:10:46,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363302864] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 20:10:46,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 20:10:46,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 20:10:46,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801471174] [2022-10-15 20:10:46,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 20:10:46,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 20:10:46,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:10:46,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 20:10:46,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 20:10:46,614 INFO L87 Difference]: Start difference. First operand has 43 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 39 states have internal predecessors, (50), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:10:46,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:10:46,699 INFO L93 Difference]: Finished difference Result 84 states and 108 transitions. [2022-10-15 20:10:46,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 20:10:46,703 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2022-10-15 20:10:46,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:10:46,711 INFO L225 Difference]: With dead ends: 84 [2022-10-15 20:10:46,712 INFO L226 Difference]: Without dead ends: 42 [2022-10-15 20:10:46,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-15 20:10:46,722 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 3 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 20:10:46,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 131 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 20:10:46,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-10-15 20:10:46,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-10-15 20:10:46,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 31 states have (on average 1.4193548387096775) internal successors, (44), 38 states have internal predecessors, (44), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 20:10:46,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2022-10-15 20:10:46,775 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 5 [2022-10-15 20:10:46,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:10:46,776 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2022-10-15 20:10:46,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:10:46,777 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2022-10-15 20:10:46,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-15 20:10:46,777 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:10:46,778 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-10-15 20:10:46,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 20:10:46,779 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-15 20:10:46,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:10:46,780 INFO L85 PathProgramCache]: Analyzing trace with hash -363792156, now seen corresponding path program 1 times [2022-10-15 20:10:46,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:10:46,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675011595] [2022-10-15 20:10:46,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:46,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:10:46,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:46,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 20:10:46,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:10:46,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675011595] [2022-10-15 20:10:46,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675011595] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 20:10:46,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 20:10:46,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 20:10:46,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115529913] [2022-10-15 20:10:46,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 20:10:46,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 20:10:46,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:10:46,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 20:10:46,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 20:10:46,911 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:10:46,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:10:46,944 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2022-10-15 20:10:46,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 20:10:46,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-10-15 20:10:46,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:10:46,946 INFO L225 Difference]: With dead ends: 42 [2022-10-15 20:10:46,947 INFO L226 Difference]: Without dead ends: 41 [2022-10-15 20:10:46,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-15 20:10:46,950 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 5 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 20:10:46,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 111 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 20:10:46,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-10-15 20:10:46,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-10-15 20:10:46,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 37 states have internal predecessors, (43), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 20:10:46,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2022-10-15 20:10:46,967 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 9 [2022-10-15 20:10:46,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:10:46,969 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2022-10-15 20:10:46,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:10:46,971 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2022-10-15 20:10:46,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-15 20:10:46,972 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:10:46,972 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2022-10-15 20:10:46,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 20:10:46,975 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-15 20:10:46,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:10:46,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1607345098, now seen corresponding path program 1 times [2022-10-15 20:10:46,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:10:46,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705311662] [2022-10-15 20:10:46,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:46,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:10:47,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:47,262 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:10:47,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:10:47,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705311662] [2022-10-15 20:10:47,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705311662] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 20:10:47,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35412718] [2022-10-15 20:10:47,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:47,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:10:47,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:10:47,268 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 20:10:47,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-15 20:10:47,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:47,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-15 20:10:47,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 20:10:47,443 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:10:47,443 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 20:10:47,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35412718] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 20:10:47,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 20:10:47,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-10-15 20:10:47,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017559100] [2022-10-15 20:10:47,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 20:10:47,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 20:10:47,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:10:47,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 20:10:47,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-15 20:10:47,447 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:10:47,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:10:47,532 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2022-10-15 20:10:47,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 20:10:47,533 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-10-15 20:10:47,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:10:47,534 INFO L225 Difference]: With dead ends: 41 [2022-10-15 20:10:47,535 INFO L226 Difference]: Without dead ends: 40 [2022-10-15 20:10:47,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-10-15 20:10:47,543 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 33 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 20:10:47,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 85 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 20:10:47,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-10-15 20:10:47,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2022-10-15 20:10:47,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 33 states have internal predecessors, (39), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 20:10:47,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2022-10-15 20:10:47,559 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 10 [2022-10-15 20:10:47,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:10:47,559 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2022-10-15 20:10:47,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:10:47,562 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2022-10-15 20:10:47,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-15 20:10:47,564 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:10:47,564 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:10:47,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-15 20:10:47,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:10:47,779 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-15 20:10:47,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:10:47,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1713291769, now seen corresponding path program 1 times [2022-10-15 20:10:47,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:10:47,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624389612] [2022-10-15 20:10:47,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:47,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:10:47,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:47,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:10:47,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:10:47,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624389612] [2022-10-15 20:10:47,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624389612] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 20:10:47,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275129014] [2022-10-15 20:10:47,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:47,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:10:47,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:10:47,876 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 20:10:47,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-15 20:10:47,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:47,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-15 20:10:47,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 20:10:47,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 20:10:47,992 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 20:10:47,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275129014] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 20:10:47,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 20:10:47,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-10-15 20:10:47,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099015936] [2022-10-15 20:10:47,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 20:10:47,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 20:10:47,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:10:47,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 20:10:47,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-15 20:10:47,996 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:10:48,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:10:48,021 INFO L93 Difference]: Finished difference Result 66 states and 78 transitions. [2022-10-15 20:10:48,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 20:10:48,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-10-15 20:10:48,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:10:48,023 INFO L225 Difference]: With dead ends: 66 [2022-10-15 20:10:48,024 INFO L226 Difference]: Without dead ends: 42 [2022-10-15 20:10:48,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-15 20:10:48,026 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 3 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 20:10:48,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 66 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 20:10:48,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-10-15 20:10:48,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2022-10-15 20:10:48,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 32 states have (on average 1.375) internal successors, (44), 37 states have internal predecessors, (44), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 20:10:48,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2022-10-15 20:10:48,037 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 11 [2022-10-15 20:10:48,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:10:48,037 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2022-10-15 20:10:48,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:10:48,038 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2022-10-15 20:10:48,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-15 20:10:48,038 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:10:48,039 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:10:48,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-15 20:10:48,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-10-15 20:10:48,254 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-15 20:10:48,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:10:48,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1572437219, now seen corresponding path program 1 times [2022-10-15 20:10:48,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:10:48,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770341700] [2022-10-15 20:10:48,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:48,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:10:48,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:48,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 20:10:48,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:10:48,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770341700] [2022-10-15 20:10:48,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770341700] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 20:10:48,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001927710] [2022-10-15 20:10:48,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:48,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:10:48,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:10:48,349 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 20:10:48,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-15 20:10:48,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:48,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-15 20:10:48,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 20:10:48,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 20:10:48,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 20:10:48,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001927710] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 20:10:48,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 20:10:48,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-10-15 20:10:48,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278184223] [2022-10-15 20:10:48,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 20:10:48,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 20:10:48,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:10:48,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 20:10:48,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-15 20:10:48,454 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:10:48,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:10:48,468 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2022-10-15 20:10:48,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 20:10:48,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-10-15 20:10:48,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:10:48,470 INFO L225 Difference]: With dead ends: 41 [2022-10-15 20:10:48,470 INFO L226 Difference]: Without dead ends: 40 [2022-10-15 20:10:48,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-15 20:10:48,472 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 22 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 20:10:48,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 41 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 20:10:48,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-10-15 20:10:48,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-10-15 20:10:48,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 32 states have (on average 1.34375) internal successors, (43), 36 states have internal predecessors, (43), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 20:10:48,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2022-10-15 20:10:48,481 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 12 [2022-10-15 20:10:48,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:10:48,481 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2022-10-15 20:10:48,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 20:10:48,482 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2022-10-15 20:10:48,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-15 20:10:48,483 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:10:48,483 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:10:48,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-15 20:10:48,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:10:48,697 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-15 20:10:48,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:10:48,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1191216772, now seen corresponding path program 1 times [2022-10-15 20:10:48,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:10:48,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545932607] [2022-10-15 20:10:48,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:48,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:10:48,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:48,843 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-15 20:10:48,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:10:48,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545932607] [2022-10-15 20:10:48,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545932607] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 20:10:48,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976256305] [2022-10-15 20:10:48,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:48,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:10:48,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:10:48,853 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 20:10:48,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-15 20:10:48,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:48,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-15 20:10:48,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 20:10:48,936 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-15 20:10:48,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 20:10:48,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976256305] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 20:10:48,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 20:10:48,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-10-15 20:10:48,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228183961] [2022-10-15 20:10:48,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 20:10:48,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 20:10:48,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:10:48,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 20:10:48,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-15 20:10:48,939 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 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) [2022-10-15 20:10:48,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:10:48,954 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2022-10-15 20:10:48,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 20:10:48,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 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) Word has length 16 [2022-10-15 20:10:48,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:10:48,956 INFO L225 Difference]: With dead ends: 40 [2022-10-15 20:10:48,956 INFO L226 Difference]: Without dead ends: 39 [2022-10-15 20:10:48,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-15 20:10:48,958 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 7 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 20:10:48,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 63 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 20:10:48,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-10-15 20:10:48,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2022-10-15 20:10:48,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 32 states have internal predecessors, (38), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 20:10:48,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2022-10-15 20:10:48,966 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 16 [2022-10-15 20:10:48,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:10:48,967 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2022-10-15 20:10:48,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 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) [2022-10-15 20:10:48,967 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2022-10-15 20:10:48,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-10-15 20:10:48,968 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:10:48,968 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:10:49,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-15 20:10:49,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:10:49,186 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-15 20:10:49,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:10:49,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1326120224, now seen corresponding path program 1 times [2022-10-15 20:10:49,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:10:49,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424853235] [2022-10-15 20:10:49,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:49,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:10:49,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:49,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-15 20:10:49,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:49,315 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 20:10:49,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:10:49,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424853235] [2022-10-15 20:10:49,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424853235] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 20:10:49,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788171562] [2022-10-15 20:10:49,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:49,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:10:49,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:10:49,318 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 20:10:49,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-15 20:10:49,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:49,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 20:10:49,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 20:10:49,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 20:10:49,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 20:10:49,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 20:10:49,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788171562] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 20:10:49,478 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 20:10:49,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-10-15 20:10:49,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035223269] [2022-10-15 20:10:49,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 20:10:49,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-15 20:10:49,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:10:49,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-15 20:10:49,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-10-15 20:10:49,481 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 20:10:49,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:10:49,534 INFO L93 Difference]: Finished difference Result 73 states and 86 transitions. [2022-10-15 20:10:49,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 20:10:49,535 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2022-10-15 20:10:49,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:10:49,536 INFO L225 Difference]: With dead ends: 73 [2022-10-15 20:10:49,536 INFO L226 Difference]: Without dead ends: 44 [2022-10-15 20:10:49,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-10-15 20:10:49,539 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 17 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 20:10:49,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 106 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 20:10:49,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-10-15 20:10:49,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-10-15 20:10:49,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 40 states have internal predecessors, (46), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 20:10:49,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2022-10-15 20:10:49,548 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 24 [2022-10-15 20:10:49,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:10:49,548 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2022-10-15 20:10:49,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 20:10:49,549 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2022-10-15 20:10:49,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-10-15 20:10:49,550 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:10:49,550 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:10:49,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-15 20:10:49,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:10:49,766 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-15 20:10:49,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:10:49,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1158539048, now seen corresponding path program 2 times [2022-10-15 20:10:49,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:10:49,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534927020] [2022-10-15 20:10:49,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:49,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:10:49,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:49,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-15 20:10:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:49,875 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-15 20:10:49,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:10:49,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534927020] [2022-10-15 20:10:49,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534927020] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 20:10:49,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213693705] [2022-10-15 20:10:49,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 20:10:49,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:10:49,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:10:49,878 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 20:10:49,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-15 20:10:49,956 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-15 20:10:49,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 20:10:49,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-15 20:10:49,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 20:10:49,980 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-15 20:10:49,980 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 20:10:49,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213693705] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 20:10:49,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 20:10:49,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-10-15 20:10:49,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067807730] [2022-10-15 20:10:49,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 20:10:49,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 20:10:49,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:10:49,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 20:10:49,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-15 20:10:49,983 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 20:10:50,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:10:50,027 INFO L93 Difference]: Finished difference Result 73 states and 82 transitions. [2022-10-15 20:10:50,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 20:10:50,027 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2022-10-15 20:10:50,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:10:50,031 INFO L225 Difference]: With dead ends: 73 [2022-10-15 20:10:50,031 INFO L226 Difference]: Without dead ends: 59 [2022-10-15 20:10:50,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-10-15 20:10:50,033 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 11 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 20:10:50,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 97 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 20:10:50,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-10-15 20:10:50,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 49. [2022-10-15 20:10:50,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 44 states have internal predecessors, (50), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 20:10:50,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2022-10-15 20:10:50,057 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 32 [2022-10-15 20:10:50,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:10:50,057 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2022-10-15 20:10:50,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 20:10:50,058 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2022-10-15 20:10:50,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-10-15 20:10:50,059 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:10:50,060 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:10:50,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-10-15 20:10:50,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:10:50,275 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-15 20:10:50,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:10:50,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1033873967, now seen corresponding path program 1 times [2022-10-15 20:10:50,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:10:50,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535750487] [2022-10-15 20:10:50,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:50,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:10:50,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:50,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-15 20:10:50,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:50,350 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-15 20:10:50,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:10:50,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535750487] [2022-10-15 20:10:50,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535750487] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 20:10:50,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 20:10:50,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 20:10:50,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120683517] [2022-10-15 20:10:50,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 20:10:50,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 20:10:50,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:10:50,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 20:10:50,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 20:10:50,353 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 20:10:50,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:10:50,365 INFO L93 Difference]: Finished difference Result 91 states and 105 transitions. [2022-10-15 20:10:50,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 20:10:50,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2022-10-15 20:10:50,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:10:50,367 INFO L225 Difference]: With dead ends: 91 [2022-10-15 20:10:50,367 INFO L226 Difference]: Without dead ends: 78 [2022-10-15 20:10:50,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 20:10:50,369 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 17 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 20:10:50,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 82 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 20:10:50,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-10-15 20:10:50,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 56. [2022-10-15 20:10:50,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 51 states have internal predecessors, (59), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 20:10:50,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2022-10-15 20:10:50,380 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 33 [2022-10-15 20:10:50,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:10:50,380 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2022-10-15 20:10:50,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 20:10:50,381 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2022-10-15 20:10:50,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-10-15 20:10:50,382 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:10:50,382 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:10:50,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-15 20:10:50,383 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-15 20:10:50,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:10:50,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1554972211, now seen corresponding path program 1 times [2022-10-15 20:10:50,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:10:50,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113463916] [2022-10-15 20:10:50,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:50,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:10:50,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:50,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-15 20:10:50,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:50,465 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-15 20:10:50,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:10:50,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113463916] [2022-10-15 20:10:50,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113463916] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 20:10:50,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904412318] [2022-10-15 20:10:50,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:50,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:10:50,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:10:50,467 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) [2022-10-15 20:10:50,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-15 20:10:50,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:50,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-15 20:10:50,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 20:10:50,642 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 20:10:50,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 20:10:50,755 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 20:10:50,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904412318] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 20:10:50,756 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 20:10:50,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 9] total 18 [2022-10-15 20:10:50,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767159135] [2022-10-15 20:10:50,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 20:10:50,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-15 20:10:50,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:10:50,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-15 20:10:50,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2022-10-15 20:10:50,759 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 18 states have internal predecessors, (60), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 20:10:51,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:10:51,026 INFO L93 Difference]: Finished difference Result 130 states and 156 transitions. [2022-10-15 20:10:51,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-15 20:10:51,026 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 18 states have internal predecessors, (60), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 33 [2022-10-15 20:10:51,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:10:51,030 INFO L225 Difference]: With dead ends: 130 [2022-10-15 20:10:51,030 INFO L226 Difference]: Without dead ends: 89 [2022-10-15 20:10:51,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=276, Invalid=654, Unknown=0, NotChecked=0, Total=930 [2022-10-15 20:10:51,033 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 75 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 20:10:51,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 244 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 20:10:51,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-10-15 20:10:51,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 81. [2022-10-15 20:10:51,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 73 states have (on average 1.1643835616438356) internal successors, (85), 76 states have internal predecessors, (85), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 20:10:51,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 91 transitions. [2022-10-15 20:10:51,070 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 91 transitions. Word has length 33 [2022-10-15 20:10:51,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:10:51,071 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 91 transitions. [2022-10-15 20:10:51,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 18 states have internal predecessors, (60), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 20:10:51,072 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 91 transitions. [2022-10-15 20:10:51,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-10-15 20:10:51,073 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:10:51,074 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:10:51,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-15 20:10:51,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:10:51,290 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-15 20:10:51,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:10:51,291 INFO L85 PathProgramCache]: Analyzing trace with hash -239663856, now seen corresponding path program 2 times [2022-10-15 20:10:51,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:10:51,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500011171] [2022-10-15 20:10:51,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:51,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:10:51,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:51,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-10-15 20:10:51,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:51,456 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-10-15 20:10:51,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:10:51,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500011171] [2022-10-15 20:10:51,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500011171] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 20:10:51,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 20:10:51,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 20:10:51,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907220865] [2022-10-15 20:10:51,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 20:10:51,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 20:10:51,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:10:51,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 20:10:51,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 20:10:51,461 INFO L87 Difference]: Start difference. First operand 81 states and 91 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 20:10:51,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:10:51,505 INFO L93 Difference]: Finished difference Result 91 states and 102 transitions. [2022-10-15 20:10:51,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 20:10:51,506 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2022-10-15 20:10:51,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:10:51,507 INFO L225 Difference]: With dead ends: 91 [2022-10-15 20:10:51,508 INFO L226 Difference]: Without dead ends: 90 [2022-10-15 20:10:51,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-15 20:10:51,509 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 8 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 20:10:51,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 98 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 20:10:51,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-10-15 20:10:51,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 82. [2022-10-15 20:10:51,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 74 states have (on average 1.162162162162162) internal successors, (86), 77 states have internal predecessors, (86), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 20:10:51,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2022-10-15 20:10:51,520 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 54 [2022-10-15 20:10:51,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:10:51,521 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2022-10-15 20:10:51,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 20:10:51,521 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2022-10-15 20:10:51,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-10-15 20:10:51,523 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:10:51,523 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:10:51,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-15 20:10:51,524 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-15 20:10:51,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:10:51,524 INFO L85 PathProgramCache]: Analyzing trace with hash 827585802, now seen corresponding path program 1 times [2022-10-15 20:10:51,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:10:51,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298575330] [2022-10-15 20:10:51,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:51,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:10:51,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:51,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-15 20:10:51,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:51,662 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-10-15 20:10:51,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:10:51,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298575330] [2022-10-15 20:10:51,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298575330] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 20:10:51,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 20:10:51,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 20:10:51,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184756803] [2022-10-15 20:10:51,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 20:10:51,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 20:10:51,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:10:51,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 20:10:51,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 20:10:51,665 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 20:10:51,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:10:51,703 INFO L93 Difference]: Finished difference Result 90 states and 101 transitions. [2022-10-15 20:10:51,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 20:10:51,703 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2022-10-15 20:10:51,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:10:51,705 INFO L225 Difference]: With dead ends: 90 [2022-10-15 20:10:51,705 INFO L226 Difference]: Without dead ends: 88 [2022-10-15 20:10:51,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-15 20:10:51,706 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 7 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 20:10:51,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 98 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 20:10:51,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-10-15 20:10:51,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2022-10-15 20:10:51,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 79 states have (on average 1.1518987341772151) internal successors, (91), 82 states have internal predecessors, (91), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-15 20:10:51,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 99 transitions. [2022-10-15 20:10:51,717 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 99 transitions. Word has length 54 [2022-10-15 20:10:51,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:10:51,718 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 99 transitions. [2022-10-15 20:10:51,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 20:10:51,718 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 99 transitions. [2022-10-15 20:10:51,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-10-15 20:10:51,719 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:10:51,720 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:10:51,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-10-15 20:10:51,720 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-15 20:10:51,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:10:51,721 INFO L85 PathProgramCache]: Analyzing trace with hash 2072901805, now seen corresponding path program 1 times [2022-10-15 20:10:51,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:10:51,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282823394] [2022-10-15 20:10:51,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:51,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:10:51,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:51,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-10-15 20:10:51,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:51,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-10-15 20:10:51,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:51,845 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-10-15 20:10:51,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:10:51,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282823394] [2022-10-15 20:10:51,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282823394] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 20:10:51,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 20:10:51,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 20:10:51,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367245807] [2022-10-15 20:10:51,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 20:10:51,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 20:10:51,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:10:51,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 20:10:51,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 20:10:51,848 INFO L87 Difference]: Start difference. First operand 88 states and 99 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 20:10:51,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:10:51,881 INFO L93 Difference]: Finished difference Result 88 states and 99 transitions. [2022-10-15 20:10:51,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 20:10:51,881 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 63 [2022-10-15 20:10:51,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:10:51,882 INFO L225 Difference]: With dead ends: 88 [2022-10-15 20:10:51,882 INFO L226 Difference]: Without dead ends: 87 [2022-10-15 20:10:51,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-15 20:10:51,884 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 11 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 20:10:51,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 82 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 20:10:51,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-10-15 20:10:51,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2022-10-15 20:10:51,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 79 states have (on average 1.139240506329114) internal successors, (90), 81 states have internal predecessors, (90), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-15 20:10:51,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 98 transitions. [2022-10-15 20:10:51,895 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 98 transitions. Word has length 63 [2022-10-15 20:10:51,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:10:51,896 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 98 transitions. [2022-10-15 20:10:51,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 20:10:51,896 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 98 transitions. [2022-10-15 20:10:51,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-10-15 20:10:51,897 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:10:51,897 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:10:51,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-10-15 20:10:51,898 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-15 20:10:51,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:10:51,898 INFO L85 PathProgramCache]: Analyzing trace with hash -164553394, now seen corresponding path program 1 times [2022-10-15 20:10:51,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:10:51,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618551671] [2022-10-15 20:10:51,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:51,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:10:51,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:52,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-10-15 20:10:52,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:52,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-10-15 20:10:52,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:52,055 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-10-15 20:10:52,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:10:52,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618551671] [2022-10-15 20:10:52,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618551671] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 20:10:52,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875002557] [2022-10-15 20:10:52,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:52,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:10:52,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:10:52,057 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) [2022-10-15 20:10:52,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-15 20:10:52,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:52,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-15 20:10:52,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 20:10:52,397 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-10-15 20:10:52,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 20:10:52,728 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-10-15 20:10:52,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875002557] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 20:10:52,729 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 20:10:52,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 17, 17] total 35 [2022-10-15 20:10:52,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023998030] [2022-10-15 20:10:52,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 20:10:52,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-10-15 20:10:52,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:10:52,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-10-15 20:10:52,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=909, Unknown=0, NotChecked=0, Total=1190 [2022-10-15 20:10:52,732 INFO L87 Difference]: Start difference. First operand 87 states and 98 transitions. Second operand has 35 states, 35 states have (on average 2.8) internal successors, (98), 35 states have internal predecessors, (98), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 20:10:53,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:10:53,359 INFO L93 Difference]: Finished difference Result 193 states and 228 transitions. [2022-10-15 20:10:53,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-10-15 20:10:53,360 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.8) internal successors, (98), 35 states have internal predecessors, (98), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 64 [2022-10-15 20:10:53,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:10:53,361 INFO L225 Difference]: With dead ends: 193 [2022-10-15 20:10:53,361 INFO L226 Difference]: Without dead ends: 137 [2022-10-15 20:10:53,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 935 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1101, Invalid=2931, Unknown=0, NotChecked=0, Total=4032 [2022-10-15 20:10:53,365 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 215 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 20:10:53,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 271 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 20:10:53,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-10-15 20:10:53,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 129. [2022-10-15 20:10:53,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 121 states have (on average 1.1074380165289257) internal successors, (134), 123 states have internal predecessors, (134), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-15 20:10:53,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 142 transitions. [2022-10-15 20:10:53,376 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 142 transitions. Word has length 64 [2022-10-15 20:10:53,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:10:53,377 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 142 transitions. [2022-10-15 20:10:53,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.8) internal successors, (98), 35 states have internal predecessors, (98), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 20:10:53,377 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 142 transitions. [2022-10-15 20:10:53,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-10-15 20:10:53,379 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:10:53,379 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:10:53,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-15 20:10:53,594 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,SelfDestructingSolverStorable13 [2022-10-15 20:10:53,595 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-15 20:10:53,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:10:53,596 INFO L85 PathProgramCache]: Analyzing trace with hash -371654495, now seen corresponding path program 2 times [2022-10-15 20:10:53,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:10:53,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953833257] [2022-10-15 20:10:53,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:53,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:10:53,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:53,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-10-15 20:10:53,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:53,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-15 20:10:53,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:53,881 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2022-10-15 20:10:53,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:10:53,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953833257] [2022-10-15 20:10:53,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953833257] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 20:10:53,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165077010] [2022-10-15 20:10:53,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 20:10:53,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:10:53,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:10:53,884 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) [2022-10-15 20:10:53,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-15 20:10:54,047 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 20:10:54,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 20:10:54,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 32 conjunts are in the unsatisfiable core [2022-10-15 20:10:54,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 20:10:54,574 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-15 20:10:54,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 20:10:55,776 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-15 20:10:55,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165077010] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 20:10:55,777 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 20:10:55,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 33, 33] total 68 [2022-10-15 20:10:55,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158425587] [2022-10-15 20:10:55,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 20:10:55,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-10-15 20:10:55,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:10:55,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-10-15 20:10:55,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1070, Invalid=3486, Unknown=0, NotChecked=0, Total=4556 [2022-10-15 20:10:55,783 INFO L87 Difference]: Start difference. First operand 129 states and 142 transitions. Second operand has 68 states, 68 states have (on average 2.4558823529411766) internal successors, (167), 68 states have internal predecessors, (167), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 20:10:57,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:10:57,737 INFO L93 Difference]: Finished difference Result 277 states and 324 transitions. [2022-10-15 20:10:57,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-10-15 20:10:57,738 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.4558823529411766) internal successors, (167), 68 states have internal predecessors, (167), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 101 [2022-10-15 20:10:57,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:10:57,741 INFO L225 Difference]: With dead ends: 277 [2022-10-15 20:10:57,741 INFO L226 Difference]: Without dead ends: 211 [2022-10-15 20:10:57,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4281 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4319, Invalid=12193, Unknown=0, NotChecked=0, Total=16512 [2022-10-15 20:10:57,752 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 583 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-15 20:10:57,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 274 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-15 20:10:57,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-10-15 20:10:57,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 203. [2022-10-15 20:10:57,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 195 states have (on average 1.0769230769230769) internal successors, (210), 197 states have internal predecessors, (210), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-15 20:10:57,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 218 transitions. [2022-10-15 20:10:57,769 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 218 transitions. Word has length 101 [2022-10-15 20:10:57,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:10:57,769 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 218 transitions. [2022-10-15 20:10:57,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.4558823529411766) internal successors, (167), 68 states have internal predecessors, (167), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 20:10:57,770 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 218 transitions. [2022-10-15 20:10:57,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-10-15 20:10:57,772 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:10:57,773 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:10:57,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-15 20:10:57,978 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,SelfDestructingSolverStorable14 [2022-10-15 20:10:57,978 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-15 20:10:57,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:10:57,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1558979186, now seen corresponding path program 3 times [2022-10-15 20:10:57,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:10:57,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435336035] [2022-10-15 20:10:57,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:57,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:10:58,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:58,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-10-15 20:10:58,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:58,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-10-15 20:10:58,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:58,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1935 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 1901 trivial. 0 not checked. [2022-10-15 20:10:58,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:10:58,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435336035] [2022-10-15 20:10:58,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435336035] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 20:10:58,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199055248] [2022-10-15 20:10:58,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 20:10:58,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:10:58,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:10:58,585 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) [2022-10-15 20:10:58,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-15 20:10:58,732 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-10-15 20:10:58,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 20:10:58,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 20:10:58,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 20:10:58,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1935 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1929 trivial. 0 not checked. [2022-10-15 20:10:58,780 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 20:10:58,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199055248] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 20:10:58,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 20:10:58,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-10-15 20:10:58,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917161806] [2022-10-15 20:10:58,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 20:10:58,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 20:10:58,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:10:58,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 20:10:58,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-10-15 20:10:58,783 INFO L87 Difference]: Start difference. First operand 203 states and 218 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 20:10:58,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:10:58,813 INFO L93 Difference]: Finished difference Result 204 states and 219 transitions. [2022-10-15 20:10:58,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 20:10:58,814 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 170 [2022-10-15 20:10:58,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:10:58,816 INFO L225 Difference]: With dead ends: 204 [2022-10-15 20:10:58,816 INFO L226 Difference]: Without dead ends: 203 [2022-10-15 20:10:58,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-10-15 20:10:58,817 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 9 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 20:10:58,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 82 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 20:10:58,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-10-15 20:10:58,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 197. [2022-10-15 20:10:58,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 191 states have (on average 1.0732984293193717) internal successors, (205), 192 states have internal predecessors, (205), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 20:10:58,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 211 transitions. [2022-10-15 20:10:58,834 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 211 transitions. Word has length 170 [2022-10-15 20:10:58,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:10:58,835 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 211 transitions. [2022-10-15 20:10:58,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 20:10:58,835 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 211 transitions. [2022-10-15 20:10:58,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-10-15 20:10:58,838 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:10:58,838 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:10:58,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-15 20:10:59,052 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,SelfDestructingSolverStorable15 [2022-10-15 20:10:59,053 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-15 20:10:59,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:10:59,054 INFO L85 PathProgramCache]: Analyzing trace with hash -391270113, now seen corresponding path program 1 times [2022-10-15 20:10:59,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:10:59,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20252171] [2022-10-15 20:10:59,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:59,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:10:59,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:59,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-10-15 20:10:59,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:59,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-10-15 20:10:59,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:59,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1934 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1930 trivial. 0 not checked. [2022-10-15 20:10:59,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:10:59,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20252171] [2022-10-15 20:10:59,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20252171] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 20:10:59,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 20:10:59,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 20:10:59,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389805266] [2022-10-15 20:10:59,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 20:10:59,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 20:10:59,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:10:59,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 20:10:59,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 20:10:59,315 INFO L87 Difference]: Start difference. First operand 197 states and 211 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 20:10:59,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:10:59,347 INFO L93 Difference]: Finished difference Result 197 states and 211 transitions. [2022-10-15 20:10:59,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 20:10:59,347 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 170 [2022-10-15 20:10:59,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:10:59,349 INFO L225 Difference]: With dead ends: 197 [2022-10-15 20:10:59,350 INFO L226 Difference]: Without dead ends: 196 [2022-10-15 20:10:59,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-15 20:10:59,351 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 9 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 20:10:59,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 78 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 20:10:59,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-10-15 20:10:59,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2022-10-15 20:10:59,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 191 states have (on average 1.068062827225131) internal successors, (204), 191 states have internal predecessors, (204), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 20:10:59,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 210 transitions. [2022-10-15 20:10:59,368 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 210 transitions. Word has length 170 [2022-10-15 20:10:59,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:10:59,369 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 210 transitions. [2022-10-15 20:10:59,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 20:10:59,369 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 210 transitions. [2022-10-15 20:10:59,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-10-15 20:10:59,372 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:10:59,372 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:10:59,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-10-15 20:10:59,373 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-15 20:10:59,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:10:59,373 INFO L85 PathProgramCache]: Analyzing trace with hash 755528499, now seen corresponding path program 1 times [2022-10-15 20:10:59,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:10:59,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988925812] [2022-10-15 20:10:59,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:59,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:10:59,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:59,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-10-15 20:10:59,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:59,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-10-15 20:10:59,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:10:59,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1935 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 1901 trivial. 0 not checked. [2022-10-15 20:10:59,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:10:59,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988925812] [2022-10-15 20:10:59,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988925812] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 20:10:59,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573963529] [2022-10-15 20:10:59,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:10:59,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:10:59,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:10:59,846 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) [2022-10-15 20:10:59,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-15 20:11:00,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:11:00,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 64 conjunts are in the unsatisfiable core [2022-10-15 20:11:00,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 20:11:01,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1935 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-10-15 20:11:01,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 20:11:05,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1935 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-10-15 20:11:05,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573963529] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 20:11:05,763 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 20:11:05,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 65, 65] total 133 [2022-10-15 20:11:05,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940360630] [2022-10-15 20:11:05,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 20:11:05,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 133 states [2022-10-15 20:11:05,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:11:05,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2022-10-15 20:11:05,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4180, Invalid=13376, Unknown=0, NotChecked=0, Total=17556 [2022-10-15 20:11:05,775 INFO L87 Difference]: Start difference. First operand 196 states and 210 transitions. Second operand has 133 states, 133 states have (on average 2.2706766917293235) internal successors, (302), 133 states have internal predecessors, (302), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 20:11:12,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 20:11:12,822 INFO L93 Difference]: Finished difference Result 411 states and 476 transitions. [2022-10-15 20:11:12,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-10-15 20:11:12,823 INFO L78 Accepts]: Start accepts. Automaton has has 133 states, 133 states have (on average 2.2706766917293235) internal successors, (302), 133 states have internal predecessors, (302), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 171 [2022-10-15 20:11:12,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 20:11:12,825 INFO L225 Difference]: With dead ends: 411 [2022-10-15 20:11:12,825 INFO L226 Difference]: Without dead ends: 342 [2022-10-15 20:11:12,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 256 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18143 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=16962, Invalid=49344, Unknown=0, NotChecked=0, Total=66306 [2022-10-15 20:11:12,838 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 1137 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-15 20:11:12,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1137 Valid, 360 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-15 20:11:12,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2022-10-15 20:11:12,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 334. [2022-10-15 20:11:12,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 329 states have (on average 1.0455927051671732) internal successors, (344), 329 states have internal predecessors, (344), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 20:11:12,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 350 transitions. [2022-10-15 20:11:12,857 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 350 transitions. Word has length 171 [2022-10-15 20:11:12,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 20:11:12,858 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 350 transitions. [2022-10-15 20:11:12,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 133 states, 133 states have (on average 2.2706766917293235) internal successors, (302), 133 states have internal predecessors, (302), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 20:11:12,858 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 350 transitions. [2022-10-15 20:11:12,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2022-10-15 20:11:12,863 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 20:11:12,863 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 63, 63, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 20:11:12,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-15 20:11:13,079 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,SelfDestructingSolverStorable17 [2022-10-15 20:11:13,080 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-15 20:11:13,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 20:11:13,082 INFO L85 PathProgramCache]: Analyzing trace with hash -454073568, now seen corresponding path program 2 times [2022-10-15 20:11:13,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 20:11:13,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855427014] [2022-10-15 20:11:13,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 20:11:13,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 20:11:13,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:11:14,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-10-15 20:11:14,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:11:14,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-10-15 20:11:14,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 20:11:14,107 INFO L134 CoverageAnalysis]: Checked inductivity of 7940 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 7885 trivial. 0 not checked. [2022-10-15 20:11:14,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 20:11:14,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855427014] [2022-10-15 20:11:14,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855427014] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 20:11:14,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289843548] [2022-10-15 20:11:14,108 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 20:11:14,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 20:11:14,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 20:11:14,110 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) [2022-10-15 20:11:14,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-10-15 20:11:14,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 20:11:14,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 20:11:14,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 1511 conjuncts, 128 conjunts are in the unsatisfiable core [2022-10-15 20:11:14,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 20:11:20,712 INFO L134 CoverageAnalysis]: Checked inductivity of 7940 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-10-15 20:11:20,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 20:11:36,188 INFO L134 CoverageAnalysis]: Checked inductivity of 7940 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-10-15 20:11:36,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289843548] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 20:11:36,189 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 20:11:36,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 129, 129] total 262 [2022-10-15 20:11:36,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492381098] [2022-10-15 20:11:36,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 20:11:36,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 262 states [2022-10-15 20:11:36,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 20:11:36,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 262 interpolants. [2022-10-15 20:11:36,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16539, Invalid=51843, Unknown=0, NotChecked=0, Total=68382 [2022-10-15 20:11:36,207 INFO L87 Difference]: Start difference. First operand 334 states and 350 transitions. Second operand has 262 states, 262 states have (on average 2.148854961832061) internal successors, (563), 262 states have internal predecessors, (563), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)