./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-numeric/java_LogBuiltIn.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-numeric/java_LogBuiltIn.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d28857c86a3c83fc75b1b8cf8125f1c52a370911 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 11:05:24,606 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 11:05:24,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 11:05:24,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 11:05:24,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 11:05:24,642 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 11:05:24,643 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 11:05:24,647 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 11:05:24,649 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 11:05:24,652 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 11:05:24,653 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 11:05:24,655 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 11:05:24,656 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 11:05:24,658 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 11:05:24,659 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 11:05:24,665 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 11:05:24,665 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 11:05:24,666 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 11:05:24,667 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 11:05:24,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 11:05:24,672 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 11:05:24,673 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 11:05:24,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 11:05:24,675 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 11:05:24,680 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 11:05:24,680 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 11:05:24,680 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 11:05:24,689 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 11:05:24,689 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 11:05:24,690 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 11:05:24,690 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 11:05:24,691 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 11:05:24,691 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 11:05:24,692 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 11:05:24,692 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 11:05:24,692 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 11:05:24,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 11:05:24,693 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 11:05:24,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 11:05:24,694 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 11:05:24,695 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 11:05:24,698 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-08-27 11:05:24,725 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 11:05:24,725 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 11:05:24,726 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 11:05:24,726 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 11:05:24,727 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 11:05:24,727 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 11:05:24,727 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 11:05:24,728 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 11:05:24,728 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 11:05:24,728 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 11:05:24,729 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 11:05:24,729 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-27 11:05:24,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 11:05:24,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-27 11:05:24,729 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-08-27 11:05:24,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 11:05:24,729 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 11:05:24,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-27 11:05:24,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 11:05:24,730 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 11:05:24,730 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 11:05:24,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 11:05:24,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 11:05:24,730 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 11:05:24,731 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-27 11:05:24,731 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 11:05:24,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 11:05:24,731 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-27 11:05:24,731 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 11:05:24,731 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d28857c86a3c83fc75b1b8cf8125f1c52a370911 [2021-08-27 11:05:24,982 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 11:05:24,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 11:05:24,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 11:05:24,997 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 11:05:24,998 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 11:05:24,999 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/java_LogBuiltIn.c [2021-08-27 11:05:25,046 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/436ff3fca/e312703fc21342f5a1281156a5c05f6b/FLAGe63ff97cc [2021-08-27 11:05:25,374 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 11:05:25,374 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/java_LogBuiltIn.c [2021-08-27 11:05:25,378 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/436ff3fca/e312703fc21342f5a1281156a5c05f6b/FLAGe63ff97cc [2021-08-27 11:05:25,845 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/436ff3fca/e312703fc21342f5a1281156a5c05f6b [2021-08-27 11:05:25,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 11:05:25,848 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 11:05:25,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 11:05:25,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 11:05:25,852 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 11:05:25,853 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:05:25" (1/1) ... [2021-08-27 11:05:25,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65df801d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:25, skipping insertion in model container [2021-08-27 11:05:25,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:05:25" (1/1) ... [2021-08-27 11:05:25,858 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 11:05:25,865 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 11:05:25,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 11:05:25,939 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 11:05:25,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 11:05:25,953 INFO L208 MainTranslator]: Completed translation [2021-08-27 11:05:25,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:25 WrapperNode [2021-08-27 11:05:25,954 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 11:05:25,954 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 11:05:25,955 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 11:05:25,955 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 11:05:25,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:25" (1/1) ... [2021-08-27 11:05:25,961 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:25" (1/1) ... [2021-08-27 11:05:25,971 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 11:05:25,972 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 11:05:25,972 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 11:05:25,972 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 11:05:26,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:25" (1/1) ... [2021-08-27 11:05:26,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:25" (1/1) ... [2021-08-27 11:05:26,010 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:25" (1/1) ... [2021-08-27 11:05:26,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:25" (1/1) ... [2021-08-27 11:05:26,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:25" (1/1) ... [2021-08-27 11:05:26,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:25" (1/1) ... [2021-08-27 11:05:26,017 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:25" (1/1) ... [2021-08-27 11:05:26,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 11:05:26,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 11:05:26,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 11:05:26,021 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 11:05:26,021 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:25" (1/1) ... [2021-08-27 11:05:26,026 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 11:05:26,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:05:26,042 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) [2021-08-27 11:05:26,080 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 [2021-08-27 11:05:26,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 11:05:26,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 11:05:26,220 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 11:05:26,220 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-08-27 11:05:26,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:05:26 BoogieIcfgContainer [2021-08-27 11:05:26,221 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 11:05:26,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 11:05:26,222 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 11:05:26,224 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 11:05:26,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 11:05:25" (1/3) ... [2021-08-27 11:05:26,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70146999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:05:26, skipping insertion in model container [2021-08-27 11:05:26,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:25" (2/3) ... [2021-08-27 11:05:26,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70146999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:05:26, skipping insertion in model container [2021-08-27 11:05:26,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:05:26" (3/3) ... [2021-08-27 11:05:26,226 INFO L111 eAbstractionObserver]: Analyzing ICFG java_LogBuiltIn.c [2021-08-27 11:05:26,229 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 11:05:26,229 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-08-27 11:05:26,254 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 11:05:26,259 INFO L339 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, mConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-08-27 11:05:26,259 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-27 11:05:26,269 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 10 states have (on average 1.6) internal successors, (16), 14 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) [2021-08-27 11:05:26,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-08-27 11:05:26,271 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:05:26,272 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-08-27 11:05:26,272 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 11:05:26,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:05:26,275 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2021-08-27 11:05:26,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:05:26,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654928308] [2021-08-27 11:05:26,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:05:26,282 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:05:26,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:05:26,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:26,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:05:26,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654928308] [2021-08-27 11:05:26,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654928308] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 11:05:26,428 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 11:05:26,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 11:05:26,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851978183] [2021-08-27 11:05:26,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 11:05:26,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:05:26,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 11:05:26,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-27 11:05:26,441 INFO L87 Difference]: Start difference. First operand has 15 states, 10 states have (on average 1.6) internal successors, (16), 14 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) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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) [2021-08-27 11:05:26,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:05:26,499 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-08-27 11:05:26,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 11:05:26,501 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2021-08-27 11:05:26,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:05:26,505 INFO L225 Difference]: With dead ends: 20 [2021-08-27 11:05:26,505 INFO L226 Difference]: Without dead ends: 8 [2021-08-27 11:05:26,507 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-27 11:05:26,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-08-27 11:05:26,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-08-27 11:05:26,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:05:26,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-08-27 11:05:26,524 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 3 [2021-08-27 11:05:26,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:05:26,524 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-08-27 11:05:26,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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) [2021-08-27 11:05:26,525 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-08-27 11:05:26,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-08-27 11:05:26,525 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:05:26,525 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-08-27 11:05:26,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 11:05:26,526 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 11:05:26,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:05:26,526 INFO L82 PathProgramCache]: Analyzing trace with hash 29862563, now seen corresponding path program 1 times [2021-08-27 11:05:26,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:05:26,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288130497] [2021-08-27 11:05:26,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:05:26,527 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:05:26,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:05:26,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:26,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:05:26,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288130497] [2021-08-27 11:05:26,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288130497] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 11:05:26,550 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 11:05:26,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 11:05:26,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456323502] [2021-08-27 11:05:26,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 11:05:26,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:05:26,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 11:05:26,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 11:05:26,552 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2021-08-27 11:05:26,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:05:26,590 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-08-27 11:05:26,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 11:05:26,591 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 [2021-08-27 11:05:26,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:05:26,591 INFO L225 Difference]: With dead ends: 15 [2021-08-27 11:05:26,591 INFO L226 Difference]: Without dead ends: 14 [2021-08-27 11:05:26,592 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-27 11:05:26,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-08-27 11:05:26,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2021-08-27 11:05:26,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.2) internal successors, (12), 11 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) [2021-08-27 11:05:26,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-08-27 11:05:26,594 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 5 [2021-08-27 11:05:26,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:05:26,595 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-08-27 11:05:26,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2021-08-27 11:05:26,595 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-08-27 11:05:26,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-27 11:05:26,595 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:05:26,596 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-27 11:05:26,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 11:05:26,596 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 11:05:26,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:05:26,597 INFO L82 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2021-08-27 11:05:26,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:05:26,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519118744] [2021-08-27 11:05:26,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:05:26,597 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:05:26,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:05:26,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:26,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:05:26,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519118744] [2021-08-27 11:05:26,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519118744] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 11:05:26,633 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 11:05:26,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 11:05:26,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119933814] [2021-08-27 11:05:26,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 11:05:26,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:05:26,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 11:05:26,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 11:05:26,638 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:05:26,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:05:26,655 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2021-08-27 11:05:26,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 11:05:26,656 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-08-27 11:05:26,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:05:26,656 INFO L225 Difference]: With dead ends: 12 [2021-08-27 11:05:26,656 INFO L226 Difference]: Without dead ends: 11 [2021-08-27 11:05:26,657 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-27 11:05:26,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-08-27 11:05:26,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-08-27 11:05:26,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 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) [2021-08-27 11:05:26,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-08-27 11:05:26,659 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 6 [2021-08-27 11:05:26,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:05:26,659 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-08-27 11:05:26,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:05:26,659 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-08-27 11:05:26,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-27 11:05:26,660 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:05:26,660 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2021-08-27 11:05:26,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-27 11:05:26,660 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 11:05:26,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:05:26,661 INFO L82 PathProgramCache]: Analyzing trace with hash 860863857, now seen corresponding path program 1 times [2021-08-27 11:05:26,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:05:26,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45471036] [2021-08-27 11:05:26,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:05:26,662 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:05:26,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:05:26,716 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:26,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:05:26,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45471036] [2021-08-27 11:05:26,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45471036] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:26,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280166649] [2021-08-27 11:05:26,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:05:26,718 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:05:26,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:05:26,721 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) [2021-08-27 11:05:26,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-27 11:05:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:05:26,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-27 11:05:26,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 11:05:26,826 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:26,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280166649] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:26,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 11:05:26,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-08-27 11:05:26,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189185695] [2021-08-27 11:05:26,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 11:05:26,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:05:26,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 11:05:26,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-27 11:05:26,829 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2021-08-27 11:05:26,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:05:26,868 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-08-27 11:05:26,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 11:05:26,869 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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 [2021-08-27 11:05:26,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:05:26,870 INFO L225 Difference]: With dead ends: 18 [2021-08-27 11:05:26,870 INFO L226 Difference]: Without dead ends: 17 [2021-08-27 11:05:26,870 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 22.6ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-08-27 11:05:26,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-08-27 11:05:26,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-08-27 11:05:26,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:05:26,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-08-27 11:05:26,876 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 10 [2021-08-27 11:05:26,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:05:26,877 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-08-27 11:05:26,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2021-08-27 11:05:26,878 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-08-27 11:05:26,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-27 11:05:26,878 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:05:26,878 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1] [2021-08-27 11:05:26,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-27 11:05:27,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:05:27,098 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 11:05:27,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:05:27,098 INFO L82 PathProgramCache]: Analyzing trace with hash -846644381, now seen corresponding path program 2 times [2021-08-27 11:05:27,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:05:27,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627731962] [2021-08-27 11:05:27,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:05:27,099 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:05:27,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:05:27,179 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:27,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:05:27,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627731962] [2021-08-27 11:05:27,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627731962] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:27,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815550781] [2021-08-27 11:05:27,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 11:05:27,180 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:05:27,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:05:27,181 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) [2021-08-27 11:05:27,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-27 11:05:27,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 11:05:27,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 11:05:27,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-27 11:05:27,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 11:05:27,276 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:27,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815550781] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:27,277 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 11:05:27,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-08-27 11:05:27,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664887340] [2021-08-27 11:05:27,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 11:05:27,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:05:27,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 11:05:27,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-08-27 11:05:27,279 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:05:27,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:05:27,316 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2021-08-27 11:05:27,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 11:05:27,316 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-08-27 11:05:27,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:05:27,317 INFO L225 Difference]: With dead ends: 23 [2021-08-27 11:05:27,317 INFO L226 Difference]: Without dead ends: 22 [2021-08-27 11:05:27,317 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 41.5ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-27 11:05:27,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-08-27 11:05:27,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2021-08-27 11:05:27,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 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) [2021-08-27 11:05:27,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2021-08-27 11:05:27,320 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 15 [2021-08-27 11:05:27,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:05:27,320 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2021-08-27 11:05:27,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:05:27,320 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2021-08-27 11:05:27,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-27 11:05:27,321 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:05:27,321 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1] [2021-08-27 11:05:27,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-27 11:05:27,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:05:27,534 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 11:05:27,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:05:27,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1716869967, now seen corresponding path program 3 times [2021-08-27 11:05:27,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:05:27,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381001846] [2021-08-27 11:05:27,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:05:27,535 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:05:27,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:05:27,604 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:27,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:05:27,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381001846] [2021-08-27 11:05:27,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381001846] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:27,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637401695] [2021-08-27 11:05:27,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 11:05:27,605 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:05:27,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:05:27,606 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) [2021-08-27 11:05:27,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-27 11:05:27,666 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-08-27 11:05:27,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 11:05:27,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-27 11:05:27,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 11:05:27,725 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:27,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637401695] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:27,726 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 11:05:27,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-08-27 11:05:27,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929715825] [2021-08-27 11:05:27,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-27 11:05:27,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:05:27,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-27 11:05:27,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-08-27 11:05:27,727 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:05:27,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:05:27,785 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2021-08-27 11:05:27,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-27 11:05:27,786 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-08-27 11:05:27,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:05:27,786 INFO L225 Difference]: With dead ends: 28 [2021-08-27 11:05:27,786 INFO L226 Difference]: Without dead ends: 27 [2021-08-27 11:05:27,787 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 47.2ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-08-27 11:05:27,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-08-27 11:05:27,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2021-08-27 11:05:27,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 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) [2021-08-27 11:05:27,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2021-08-27 11:05:27,789 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 20 [2021-08-27 11:05:27,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:05:27,789 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2021-08-27 11:05:27,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:05:27,790 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2021-08-27 11:05:27,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-27 11:05:27,790 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:05:27,790 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1] [2021-08-27 11:05:27,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-27 11:05:28,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:05:28,006 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 11:05:28,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:05:28,007 INFO L82 PathProgramCache]: Analyzing trace with hash -333652957, now seen corresponding path program 4 times [2021-08-27 11:05:28,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:05:28,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804822291] [2021-08-27 11:05:28,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:05:28,007 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:05:28,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:05:28,111 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:28,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:05:28,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804822291] [2021-08-27 11:05:28,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804822291] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:28,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80321753] [2021-08-27 11:05:28,112 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-27 11:05:28,112 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:05:28,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:05:28,113 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) [2021-08-27 11:05:28,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-27 11:05:28,167 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-27 11:05:28,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 11:05:28,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-27 11:05:28,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 11:05:28,246 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:28,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80321753] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:28,247 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 11:05:28,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-08-27 11:05:28,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406108395] [2021-08-27 11:05:28,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-27 11:05:28,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:05:28,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-27 11:05:28,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-08-27 11:05:28,249 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 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) [2021-08-27 11:05:28,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:05:28,304 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2021-08-27 11:05:28,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-27 11:05:28,304 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 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 25 [2021-08-27 11:05:28,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:05:28,305 INFO L225 Difference]: With dead ends: 33 [2021-08-27 11:05:28,305 INFO L226 Difference]: Without dead ends: 32 [2021-08-27 11:05:28,306 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 77.2ms TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2021-08-27 11:05:28,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-08-27 11:05:28,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2021-08-27 11:05:28,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 30 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:05:28,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2021-08-27 11:05:28,308 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 25 [2021-08-27 11:05:28,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:05:28,309 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2021-08-27 11:05:28,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 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) [2021-08-27 11:05:28,309 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2021-08-27 11:05:28,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-08-27 11:05:28,309 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:05:28,310 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1] [2021-08-27 11:05:28,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-27 11:05:28,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:05:28,525 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 11:05:28,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:05:28,525 INFO L82 PathProgramCache]: Analyzing trace with hash -302154767, now seen corresponding path program 5 times [2021-08-27 11:05:28,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:05:28,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844043706] [2021-08-27 11:05:28,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:05:28,526 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:05:28,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:05:28,658 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:28,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:05:28,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844043706] [2021-08-27 11:05:28,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844043706] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:28,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727051549] [2021-08-27 11:05:28,659 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-27 11:05:28,659 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:05:28,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:05:28,660 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) [2021-08-27 11:05:28,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-27 11:05:28,718 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-08-27 11:05:28,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 11:05:28,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-27 11:05:28,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 11:05:28,826 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:28,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727051549] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:28,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 11:05:28,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2021-08-27 11:05:28,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889130653] [2021-08-27 11:05:28,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-27 11:05:28,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:05:28,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-27 11:05:28,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-08-27 11:05:28,828 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 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) [2021-08-27 11:05:28,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:05:28,911 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2021-08-27 11:05:28,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-27 11:05:28,912 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 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 30 [2021-08-27 11:05:28,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:05:28,912 INFO L225 Difference]: With dead ends: 38 [2021-08-27 11:05:28,912 INFO L226 Difference]: Without dead ends: 37 [2021-08-27 11:05:28,913 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 118.7ms TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2021-08-27 11:05:28,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-08-27 11:05:28,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2021-08-27 11:05:28,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 35 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:05:28,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2021-08-27 11:05:28,915 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 30 [2021-08-27 11:05:28,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:05:28,915 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2021-08-27 11:05:28,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 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) [2021-08-27 11:05:28,916 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2021-08-27 11:05:28,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-08-27 11:05:28,916 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:05:28,916 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1] [2021-08-27 11:05:28,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-27 11:05:29,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:05:29,121 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 11:05:29,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:05:29,121 INFO L82 PathProgramCache]: Analyzing trace with hash -902918941, now seen corresponding path program 6 times [2021-08-27 11:05:29,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:05:29,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303294401] [2021-08-27 11:05:29,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:05:29,122 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:05:29,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:05:29,244 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:29,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:05:29,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303294401] [2021-08-27 11:05:29,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303294401] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:29,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138683246] [2021-08-27 11:05:29,245 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-27 11:05:29,245 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:05:29,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:05:29,246 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) [2021-08-27 11:05:29,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-27 11:05:29,321 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-08-27 11:05:29,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 11:05:29,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-27 11:05:29,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 11:05:29,437 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:29,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138683246] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:29,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 11:05:29,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-08-27 11:05:29,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267076786] [2021-08-27 11:05:29,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-27 11:05:29,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:05:29,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-27 11:05:29,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-08-27 11:05:29,439 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand has 16 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:05:29,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:05:29,554 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2021-08-27 11:05:29,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-27 11:05:29,554 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-08-27 11:05:29,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:05:29,555 INFO L225 Difference]: With dead ends: 43 [2021-08-27 11:05:29,555 INFO L226 Difference]: Without dead ends: 42 [2021-08-27 11:05:29,555 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 135.4ms TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2021-08-27 11:05:29,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-08-27 11:05:29,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2021-08-27 11:05:29,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.025) internal successors, (41), 40 states have internal predecessors, (41), 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) [2021-08-27 11:05:29,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2021-08-27 11:05:29,558 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 35 [2021-08-27 11:05:29,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:05:29,558 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2021-08-27 11:05:29,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:05:29,559 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2021-08-27 11:05:29,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-08-27 11:05:29,559 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:05:29,559 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 1, 1] [2021-08-27 11:05:29,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-27 11:05:29,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:05:29,765 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 11:05:29,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:05:29,766 INFO L82 PathProgramCache]: Analyzing trace with hash -820231375, now seen corresponding path program 7 times [2021-08-27 11:05:29,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:05:29,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346331271] [2021-08-27 11:05:29,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:05:29,766 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:05:29,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:05:29,926 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:29,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:05:29,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346331271] [2021-08-27 11:05:29,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346331271] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:29,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018482209] [2021-08-27 11:05:29,927 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-27 11:05:29,927 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:05:29,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:05:29,929 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) [2021-08-27 11:05:29,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-08-27 11:05:30,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:05:30,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 17 conjunts are in the unsatisfiable core [2021-08-27 11:05:30,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 11:05:30,252 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:30,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018482209] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:30,252 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 11:05:30,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2021-08-27 11:05:30,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984607350] [2021-08-27 11:05:30,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-27 11:05:30,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:05:30,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-27 11:05:30,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-08-27 11:05:30,256 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:05:30,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:05:30,444 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2021-08-27 11:05:30,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-27 11:05:30,444 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-08-27 11:05:30,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:05:30,444 INFO L225 Difference]: With dead ends: 48 [2021-08-27 11:05:30,444 INFO L226 Difference]: Without dead ends: 47 [2021-08-27 11:05:30,445 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 192.3ms TimeCoverageRelationStatistics Valid=205, Invalid=445, Unknown=0, NotChecked=0, Total=650 [2021-08-27 11:05:30,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-08-27 11:05:30,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2021-08-27 11:05:30,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.0222222222222221) internal successors, (46), 45 states have internal predecessors, (46), 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) [2021-08-27 11:05:30,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2021-08-27 11:05:30,448 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 40 [2021-08-27 11:05:30,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:05:30,448 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2021-08-27 11:05:30,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:05:30,448 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2021-08-27 11:05:30,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-08-27 11:05:30,448 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:05:30,448 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 1, 1] [2021-08-27 11:05:30,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-08-27 11:05:30,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:05:30,649 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 11:05:30,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:05:30,650 INFO L82 PathProgramCache]: Analyzing trace with hash -311800413, now seen corresponding path program 8 times [2021-08-27 11:05:30,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:05:30,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990851150] [2021-08-27 11:05:30,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:05:30,650 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:05:30,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:05:30,821 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:30,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:05:30,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990851150] [2021-08-27 11:05:30,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990851150] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:30,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280081735] [2021-08-27 11:05:30,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 11:05:30,822 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:05:30,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:05:30,823 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) [2021-08-27 11:05:30,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-08-27 11:05:30,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 11:05:30,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 11:05:30,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-27 11:05:30,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 11:05:31,077 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:31,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280081735] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:31,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 11:05:31,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-08-27 11:05:31,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025131251] [2021-08-27 11:05:31,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-08-27 11:05:31,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:05:31,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-08-27 11:05:31,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2021-08-27 11:05:31,080 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand has 20 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 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) [2021-08-27 11:05:31,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:05:31,185 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2021-08-27 11:05:31,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-27 11:05:31,185 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 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 45 [2021-08-27 11:05:31,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:05:31,186 INFO L225 Difference]: With dead ends: 53 [2021-08-27 11:05:31,186 INFO L226 Difference]: Without dead ends: 52 [2021-08-27 11:05:31,186 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 175.9ms TimeCoverageRelationStatistics Valid=253, Invalid=559, Unknown=0, NotChecked=0, Total=812 [2021-08-27 11:05:31,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-08-27 11:05:31,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2021-08-27 11:05:31,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.02) internal successors, (51), 50 states have internal predecessors, (51), 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) [2021-08-27 11:05:31,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2021-08-27 11:05:31,189 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 45 [2021-08-27 11:05:31,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:05:31,189 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2021-08-27 11:05:31,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 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) [2021-08-27 11:05:31,190 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2021-08-27 11:05:31,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-08-27 11:05:31,190 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:05:31,190 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 1, 1] [2021-08-27 11:05:31,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-08-27 11:05:31,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-08-27 11:05:31,409 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 11:05:31,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:05:31,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1658518129, now seen corresponding path program 9 times [2021-08-27 11:05:31,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:05:31,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457004520] [2021-08-27 11:05:31,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:05:31,410 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:05:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:05:31,618 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:31,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:05:31,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457004520] [2021-08-27 11:05:31,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457004520] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:31,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791432533] [2021-08-27 11:05:31,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 11:05:31,620 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:05:31,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:05:31,633 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) [2021-08-27 11:05:31,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-08-27 11:05:31,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-08-27 11:05:31,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 11:05:31,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 21 conjunts are in the unsatisfiable core [2021-08-27 11:05:31,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 11:05:31,926 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:31,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791432533] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:31,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 11:05:31,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2021-08-27 11:05:31,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716488780] [2021-08-27 11:05:31,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-08-27 11:05:31,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:05:31,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-08-27 11:05:31,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-08-27 11:05:31,928 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand has 22 states, 21 states have (on average 2.380952380952381) internal successors, (50), 21 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:05:32,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:05:32,057 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2021-08-27 11:05:32,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-27 11:05:32,058 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.380952380952381) internal successors, (50), 21 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-08-27 11:05:32,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:05:32,058 INFO L225 Difference]: With dead ends: 58 [2021-08-27 11:05:32,058 INFO L226 Difference]: Without dead ends: 57 [2021-08-27 11:05:32,059 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 224.8ms TimeCoverageRelationStatistics Valid=306, Invalid=686, Unknown=0, NotChecked=0, Total=992 [2021-08-27 11:05:32,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-08-27 11:05:32,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2021-08-27 11:05:32,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.018181818181818) internal successors, (56), 55 states have internal predecessors, (56), 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) [2021-08-27 11:05:32,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2021-08-27 11:05:32,066 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 50 [2021-08-27 11:05:32,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:05:32,067 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2021-08-27 11:05:32,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.380952380952381) internal successors, (50), 21 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:05:32,067 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2021-08-27 11:05:32,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-08-27 11:05:32,068 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:05:32,068 INFO L512 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1] [2021-08-27 11:05:32,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-08-27 11:05:32,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:05:32,288 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 11:05:32,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:05:32,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1266934173, now seen corresponding path program 10 times [2021-08-27 11:05:32,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:05:32,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814361933] [2021-08-27 11:05:32,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:05:32,289 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:05:32,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:05:32,507 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:32,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:05:32,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814361933] [2021-08-27 11:05:32,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814361933] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:32,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550495625] [2021-08-27 11:05:32,508 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-27 11:05:32,508 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:05:32,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:05:32,509 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) [2021-08-27 11:05:32,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-08-27 11:05:32,644 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-27 11:05:32,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 11:05:32,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 23 conjunts are in the unsatisfiable core [2021-08-27 11:05:32,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 11:05:32,810 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:32,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550495625] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:32,811 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 11:05:32,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-08-27 11:05:32,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559613138] [2021-08-27 11:05:32,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-08-27 11:05:32,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:05:32,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-08-27 11:05:32,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2021-08-27 11:05:32,813 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand has 24 states, 23 states have (on average 2.391304347826087) internal successors, (55), 23 states have internal predecessors, (55), 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) [2021-08-27 11:05:32,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:05:32,970 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2021-08-27 11:05:32,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-08-27 11:05:32,971 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.391304347826087) internal successors, (55), 23 states have internal predecessors, (55), 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 55 [2021-08-27 11:05:32,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:05:32,973 INFO L225 Difference]: With dead ends: 63 [2021-08-27 11:05:32,973 INFO L226 Difference]: Without dead ends: 62 [2021-08-27 11:05:32,974 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 247.6ms TimeCoverageRelationStatistics Valid=364, Invalid=826, Unknown=0, NotChecked=0, Total=1190 [2021-08-27 11:05:32,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-08-27 11:05:32,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2021-08-27 11:05:32,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.0166666666666666) internal successors, (61), 60 states have internal predecessors, (61), 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) [2021-08-27 11:05:32,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2021-08-27 11:05:32,980 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 55 [2021-08-27 11:05:32,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:05:32,980 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2021-08-27 11:05:32,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.391304347826087) internal successors, (55), 23 states have internal predecessors, (55), 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) [2021-08-27 11:05:32,980 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2021-08-27 11:05:32,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-08-27 11:05:32,981 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:05:32,981 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 1, 1] [2021-08-27 11:05:32,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-08-27 11:05:33,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-08-27 11:05:33,189 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 11:05:33,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:05:33,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1777491535, now seen corresponding path program 11 times [2021-08-27 11:05:33,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:05:33,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277623369] [2021-08-27 11:05:33,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:05:33,189 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:05:33,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:05:33,443 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:33,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:05:33,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277623369] [2021-08-27 11:05:33,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277623369] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:33,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814092924] [2021-08-27 11:05:33,444 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-27 11:05:33,444 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:05:33,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:05:33,449 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) [2021-08-27 11:05:33,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-08-27 11:05:33,651 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-08-27 11:05:33,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 11:05:33,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 25 conjunts are in the unsatisfiable core [2021-08-27 11:05:33,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 11:05:33,828 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:33,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814092924] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:33,828 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 11:05:33,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2021-08-27 11:05:33,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667727037] [2021-08-27 11:05:33,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-08-27 11:05:33,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:05:33,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-08-27 11:05:33,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2021-08-27 11:05:33,830 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand has 26 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 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) [2021-08-27 11:05:34,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:05:34,010 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2021-08-27 11:05:34,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-27 11:05:34,010 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 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 60 [2021-08-27 11:05:34,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:05:34,011 INFO L225 Difference]: With dead ends: 68 [2021-08-27 11:05:34,011 INFO L226 Difference]: Without dead ends: 67 [2021-08-27 11:05:34,011 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 290.2ms TimeCoverageRelationStatistics Valid=427, Invalid=979, Unknown=0, NotChecked=0, Total=1406 [2021-08-27 11:05:34,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-08-27 11:05:34,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2021-08-27 11:05:34,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.0153846153846153) internal successors, (66), 65 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:05:34,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2021-08-27 11:05:34,014 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 60 [2021-08-27 11:05:34,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:05:34,014 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2021-08-27 11:05:34,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 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) [2021-08-27 11:05:34,014 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2021-08-27 11:05:34,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-08-27 11:05:34,015 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:05:34,015 INFO L512 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 1, 1] [2021-08-27 11:05:34,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-08-27 11:05:34,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-08-27 11:05:34,229 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 11:05:34,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:05:34,229 INFO L82 PathProgramCache]: Analyzing trace with hash 386924323, now seen corresponding path program 12 times [2021-08-27 11:05:34,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:05:34,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830900292] [2021-08-27 11:05:34,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:05:34,230 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:05:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:05:34,508 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:34,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:05:34,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830900292] [2021-08-27 11:05:34,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830900292] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:34,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983088387] [2021-08-27 11:05:34,509 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-27 11:05:34,509 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:05:34,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:05:34,510 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) [2021-08-27 11:05:34,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-08-27 11:05:34,699 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-08-27 11:05:34,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 11:05:34,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 27 conjunts are in the unsatisfiable core [2021-08-27 11:05:34,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 11:05:34,896 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:34,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983088387] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:34,896 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 11:05:34,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2021-08-27 11:05:34,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454831600] [2021-08-27 11:05:34,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-08-27 11:05:34,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:05:34,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-08-27 11:05:34,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2021-08-27 11:05:34,898 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand has 28 states, 27 states have (on average 2.4074074074074074) internal successors, (65), 27 states have internal predecessors, (65), 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) [2021-08-27 11:05:35,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:05:35,087 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2021-08-27 11:05:35,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-27 11:05:35,088 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.4074074074074074) internal successors, (65), 27 states have internal predecessors, (65), 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 65 [2021-08-27 11:05:35,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:05:35,088 INFO L225 Difference]: With dead ends: 73 [2021-08-27 11:05:35,088 INFO L226 Difference]: Without dead ends: 72 [2021-08-27 11:05:35,089 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 327.2ms TimeCoverageRelationStatistics Valid=495, Invalid=1145, Unknown=0, NotChecked=0, Total=1640 [2021-08-27 11:05:35,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-08-27 11:05:35,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2021-08-27 11:05:35,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.0142857142857142) internal successors, (71), 70 states have internal predecessors, (71), 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) [2021-08-27 11:05:35,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2021-08-27 11:05:35,092 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 65 [2021-08-27 11:05:35,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:05:35,092 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2021-08-27 11:05:35,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.4074074074074074) internal successors, (65), 27 states have internal predecessors, (65), 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) [2021-08-27 11:05:35,092 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2021-08-27 11:05:35,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-08-27 11:05:35,093 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:05:35,093 INFO L512 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 1, 1] [2021-08-27 11:05:35,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-08-27 11:05:35,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-08-27 11:05:35,309 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 11:05:35,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:05:35,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1552431345, now seen corresponding path program 13 times [2021-08-27 11:05:35,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:05:35,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107118281] [2021-08-27 11:05:35,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:05:35,310 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:05:35,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:05:35,625 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:35,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:05:35,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107118281] [2021-08-27 11:05:35,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107118281] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:35,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306393491] [2021-08-27 11:05:35,625 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-27 11:05:35,626 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:05:35,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:05:35,633 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 11:05:35,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-08-27 11:05:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:05:35,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 29 conjunts are in the unsatisfiable core [2021-08-27 11:05:35,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 11:05:36,056 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:36,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306393491] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:36,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 11:05:36,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2021-08-27 11:05:36,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822801985] [2021-08-27 11:05:36,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-08-27 11:05:36,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:05:36,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-08-27 11:05:36,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2021-08-27 11:05:36,063 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand has 30 states, 29 states have (on average 2.413793103448276) internal successors, (70), 29 states have internal predecessors, (70), 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) [2021-08-27 11:05:36,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:05:36,274 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2021-08-27 11:05:36,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-27 11:05:36,274 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.413793103448276) internal successors, (70), 29 states have internal predecessors, (70), 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 70 [2021-08-27 11:05:36,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:05:36,275 INFO L225 Difference]: With dead ends: 78 [2021-08-27 11:05:36,275 INFO L226 Difference]: Without dead ends: 77 [2021-08-27 11:05:36,275 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 395.0ms TimeCoverageRelationStatistics Valid=568, Invalid=1324, Unknown=0, NotChecked=0, Total=1892 [2021-08-27 11:05:36,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-08-27 11:05:36,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2021-08-27 11:05:36,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.0133333333333334) internal successors, (76), 75 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:05:36,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2021-08-27 11:05:36,278 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 70 [2021-08-27 11:05:36,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:05:36,278 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2021-08-27 11:05:36,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.413793103448276) internal successors, (70), 29 states have internal predecessors, (70), 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) [2021-08-27 11:05:36,278 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2021-08-27 11:05:36,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-08-27 11:05:36,279 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:05:36,279 INFO L512 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 1, 1] [2021-08-27 11:05:36,297 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-08-27 11:05:36,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-08-27 11:05:36,486 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 11:05:36,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:05:36,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1708257251, now seen corresponding path program 14 times [2021-08-27 11:05:36,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:05:36,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509992777] [2021-08-27 11:05:36,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:05:36,487 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:05:36,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:05:36,807 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:36,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:05:36,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509992777] [2021-08-27 11:05:36,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509992777] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:36,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635672454] [2021-08-27 11:05:36,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 11:05:36,808 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:05:36,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:05:36,808 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 11:05:36,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-08-27 11:05:37,039 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 11:05:37,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 11:05:37,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 31 conjunts are in the unsatisfiable core [2021-08-27 11:05:37,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 11:05:37,266 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:37,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635672454] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:37,267 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 11:05:37,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-08-27 11:05:37,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927402073] [2021-08-27 11:05:37,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-08-27 11:05:37,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:05:37,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-08-27 11:05:37,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2021-08-27 11:05:37,270 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand has 32 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 31 states have internal predecessors, (75), 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) [2021-08-27 11:05:37,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:05:37,503 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2021-08-27 11:05:37,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-27 11:05:37,504 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 31 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-08-27 11:05:37,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:05:37,504 INFO L225 Difference]: With dead ends: 83 [2021-08-27 11:05:37,504 INFO L226 Difference]: Without dead ends: 82 [2021-08-27 11:05:37,505 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 414.6ms TimeCoverageRelationStatistics Valid=646, Invalid=1516, Unknown=0, NotChecked=0, Total=2162 [2021-08-27 11:05:37,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-08-27 11:05:37,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2021-08-27 11:05:37,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.0125) internal successors, (81), 80 states have internal predecessors, (81), 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) [2021-08-27 11:05:37,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2021-08-27 11:05:37,508 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 75 [2021-08-27 11:05:37,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:05:37,508 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2021-08-27 11:05:37,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 31 states have internal predecessors, (75), 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) [2021-08-27 11:05:37,508 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2021-08-27 11:05:37,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-08-27 11:05:37,509 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:05:37,509 INFO L512 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 1, 1] [2021-08-27 11:05:37,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-08-27 11:05:37,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:05:37,717 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 11:05:37,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:05:37,717 INFO L82 PathProgramCache]: Analyzing trace with hash -249642959, now seen corresponding path program 15 times [2021-08-27 11:05:37,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:05:37,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013364854] [2021-08-27 11:05:37,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:05:37,718 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:05:37,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:05:38,108 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:38,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:05:38,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013364854] [2021-08-27 11:05:38,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013364854] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:38,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532364170] [2021-08-27 11:05:38,108 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 11:05:38,109 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:05:38,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:05:38,125 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 11:05:38,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-08-27 11:05:38,489 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-08-27 11:05:38,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 11:05:38,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 33 conjunts are in the unsatisfiable core [2021-08-27 11:05:38,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 11:05:38,719 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:38,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532364170] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:38,719 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 11:05:38,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-08-27 11:05:38,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686483437] [2021-08-27 11:05:38,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-08-27 11:05:38,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:05:38,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-08-27 11:05:38,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2021-08-27 11:05:38,721 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand has 34 states, 33 states have (on average 2.4242424242424243) internal successors, (80), 33 states have internal predecessors, (80), 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) [2021-08-27 11:05:38,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:05:38,964 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2021-08-27 11:05:38,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-08-27 11:05:38,965 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.4242424242424243) internal successors, (80), 33 states have internal predecessors, (80), 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 80 [2021-08-27 11:05:38,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:05:38,965 INFO L225 Difference]: With dead ends: 88 [2021-08-27 11:05:38,965 INFO L226 Difference]: Without dead ends: 87 [2021-08-27 11:05:38,966 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 493.6ms TimeCoverageRelationStatistics Valid=729, Invalid=1721, Unknown=0, NotChecked=0, Total=2450 [2021-08-27 11:05:38,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-08-27 11:05:38,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2021-08-27 11:05:38,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.011764705882353) internal successors, (86), 85 states have internal predecessors, (86), 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) [2021-08-27 11:05:38,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2021-08-27 11:05:38,968 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 80 [2021-08-27 11:05:38,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:05:38,968 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2021-08-27 11:05:38,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.4242424242424243) internal successors, (80), 33 states have internal predecessors, (80), 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) [2021-08-27 11:05:38,969 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2021-08-27 11:05:38,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-08-27 11:05:38,969 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:05:38,969 INFO L512 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 1, 1] [2021-08-27 11:05:38,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-08-27 11:05:39,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-08-27 11:05:39,184 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 11:05:39,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:05:39,184 INFO L82 PathProgramCache]: Analyzing trace with hash 174977187, now seen corresponding path program 16 times [2021-08-27 11:05:39,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:05:39,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101195944] [2021-08-27 11:05:39,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:05:39,184 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:05:39,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:05:39,579 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:39,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:05:39,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101195944] [2021-08-27 11:05:39,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101195944] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:39,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55828816] [2021-08-27 11:05:39,580 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-27 11:05:39,580 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:05:39,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:05:39,583 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 11:05:39,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-08-27 11:05:39,875 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-27 11:05:39,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 11:05:39,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 35 conjunts are in the unsatisfiable core [2021-08-27 11:05:39,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 11:05:40,109 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:40,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55828816] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:40,110 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 11:05:40,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2021-08-27 11:05:40,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495385323] [2021-08-27 11:05:40,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-08-27 11:05:40,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:05:40,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-08-27 11:05:40,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2021-08-27 11:05:40,111 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand has 36 states, 35 states have (on average 2.4285714285714284) internal successors, (85), 35 states have internal predecessors, (85), 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) [2021-08-27 11:05:40,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:05:40,412 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2021-08-27 11:05:40,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-08-27 11:05:40,413 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.4285714285714284) internal successors, (85), 35 states have internal predecessors, (85), 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 85 [2021-08-27 11:05:40,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:05:40,413 INFO L225 Difference]: With dead ends: 93 [2021-08-27 11:05:40,413 INFO L226 Difference]: Without dead ends: 92 [2021-08-27 11:05:40,414 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 526.8ms TimeCoverageRelationStatistics Valid=817, Invalid=1939, Unknown=0, NotChecked=0, Total=2756 [2021-08-27 11:05:40,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-08-27 11:05:40,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2021-08-27 11:05:40,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.011111111111111) internal successors, (91), 90 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:05:40,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2021-08-27 11:05:40,416 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 85 [2021-08-27 11:05:40,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:05:40,417 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2021-08-27 11:05:40,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.4285714285714284) internal successors, (85), 35 states have internal predecessors, (85), 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) [2021-08-27 11:05:40,417 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2021-08-27 11:05:40,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-08-27 11:05:40,417 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:05:40,417 INFO L512 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 1, 1] [2021-08-27 11:05:40,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-08-27 11:05:40,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:05:40,629 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 11:05:40,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:05:40,629 INFO L82 PathProgramCache]: Analyzing trace with hash 363149169, now seen corresponding path program 17 times [2021-08-27 11:05:40,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:05:40,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895171579] [2021-08-27 11:05:40,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:05:40,629 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:05:40,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:05:41,095 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:41,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:05:41,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895171579] [2021-08-27 11:05:41,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895171579] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:41,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391356667] [2021-08-27 11:05:41,096 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-27 11:05:41,096 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:05:41,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:05:41,105 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 11:05:41,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-08-27 11:05:41,472 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-08-27 11:05:41,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 11:05:41,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 37 conjunts are in the unsatisfiable core [2021-08-27 11:05:41,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 11:05:41,728 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:41,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391356667] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:41,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 11:05:41,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-08-27 11:05:41,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043567736] [2021-08-27 11:05:41,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-08-27 11:05:41,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:05:41,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-08-27 11:05:41,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2021-08-27 11:05:41,730 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand has 38 states, 37 states have (on average 2.4324324324324325) internal successors, (90), 37 states have internal predecessors, (90), 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) [2021-08-27 11:05:42,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:05:42,025 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2021-08-27 11:05:42,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-08-27 11:05:42,025 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.4324324324324325) internal successors, (90), 37 states have internal predecessors, (90), 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 90 [2021-08-27 11:05:42,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:05:42,026 INFO L225 Difference]: With dead ends: 98 [2021-08-27 11:05:42,026 INFO L226 Difference]: Without dead ends: 97 [2021-08-27 11:05:42,027 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 608.9ms TimeCoverageRelationStatistics Valid=910, Invalid=2170, Unknown=0, NotChecked=0, Total=3080 [2021-08-27 11:05:42,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-08-27 11:05:42,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 96. [2021-08-27 11:05:42,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.0105263157894737) internal successors, (96), 95 states have internal predecessors, (96), 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) [2021-08-27 11:05:42,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2021-08-27 11:05:42,028 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 90 [2021-08-27 11:05:42,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:05:42,029 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2021-08-27 11:05:42,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.4324324324324325) internal successors, (90), 37 states have internal predecessors, (90), 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) [2021-08-27 11:05:42,029 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2021-08-27 11:05:42,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-08-27 11:05:42,029 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:05:42,029 INFO L512 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 1, 1] [2021-08-27 11:05:42,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-08-27 11:05:42,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:05:42,243 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 11:05:42,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:05:42,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1200619875, now seen corresponding path program 18 times [2021-08-27 11:05:42,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:05:42,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702724813] [2021-08-27 11:05:42,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:05:42,244 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:05:42,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:05:42,749 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:42,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:05:42,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702724813] [2021-08-27 11:05:42,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702724813] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:42,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694681837] [2021-08-27 11:05:42,750 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-27 11:05:42,750 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:05:42,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:05:42,753 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 11:05:42,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-08-27 11:05:43,124 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-08-27 11:05:43,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 11:05:43,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 39 conjunts are in the unsatisfiable core [2021-08-27 11:05:43,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 11:05:43,400 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:43,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694681837] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:43,400 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 11:05:43,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2021-08-27 11:05:43,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899462116] [2021-08-27 11:05:43,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-08-27 11:05:43,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:05:43,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-08-27 11:05:43,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=1141, Unknown=0, NotChecked=0, Total=1560 [2021-08-27 11:05:43,402 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand has 40 states, 39 states have (on average 2.4358974358974357) internal successors, (95), 39 states have internal predecessors, (95), 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) [2021-08-27 11:05:43,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:05:43,724 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2021-08-27 11:05:43,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-08-27 11:05:43,725 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.4358974358974357) internal successors, (95), 39 states have internal predecessors, (95), 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 95 [2021-08-27 11:05:43,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:05:43,725 INFO L225 Difference]: With dead ends: 103 [2021-08-27 11:05:43,725 INFO L226 Difference]: Without dead ends: 102 [2021-08-27 11:05:43,726 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 652.4ms TimeCoverageRelationStatistics Valid=1008, Invalid=2414, Unknown=0, NotChecked=0, Total=3422 [2021-08-27 11:05:43,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-08-27 11:05:43,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2021-08-27 11:05:43,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.01) internal successors, (101), 100 states have internal predecessors, (101), 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) [2021-08-27 11:05:43,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2021-08-27 11:05:43,728 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 95 [2021-08-27 11:05:43,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:05:43,728 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2021-08-27 11:05:43,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.4358974358974357) internal successors, (95), 39 states have internal predecessors, (95), 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) [2021-08-27 11:05:43,728 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2021-08-27 11:05:43,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-08-27 11:05:43,729 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:05:43,729 INFO L512 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 1, 1] [2021-08-27 11:05:43,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-08-27 11:05:43,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:05:43,941 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 11:05:43,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:05:43,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1391435441, now seen corresponding path program 19 times [2021-08-27 11:05:43,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:05:43,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720170232] [2021-08-27 11:05:43,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:05:43,941 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:05:43,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:05:44,467 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 0 proven. 931 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:44,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:05:44,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720170232] [2021-08-27 11:05:44,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720170232] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:44,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412698761] [2021-08-27 11:05:44,468 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-27 11:05:44,468 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:05:44,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:05:44,469 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 11:05:44,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-08-27 11:05:44,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:05:44,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 41 conjunts are in the unsatisfiable core [2021-08-27 11:05:44,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 11:05:45,143 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 0 proven. 931 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:45,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412698761] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:45,143 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 11:05:45,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2021-08-27 11:05:45,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810164538] [2021-08-27 11:05:45,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-08-27 11:05:45,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:05:45,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-08-27 11:05:45,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=1261, Unknown=0, NotChecked=0, Total=1722 [2021-08-27 11:05:45,145 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand has 42 states, 41 states have (on average 2.4390243902439024) internal successors, (100), 41 states have internal predecessors, (100), 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) [2021-08-27 11:05:45,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:05:45,493 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2021-08-27 11:05:45,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-08-27 11:05:45,493 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.4390243902439024) internal successors, (100), 41 states have internal predecessors, (100), 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 100 [2021-08-27 11:05:45,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:05:45,494 INFO L225 Difference]: With dead ends: 108 [2021-08-27 11:05:45,494 INFO L226 Difference]: Without dead ends: 107 [2021-08-27 11:05:45,495 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 707.4ms TimeCoverageRelationStatistics Valid=1111, Invalid=2671, Unknown=0, NotChecked=0, Total=3782 [2021-08-27 11:05:45,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-08-27 11:05:45,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 106. [2021-08-27 11:05:45,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.0095238095238095) internal successors, (106), 105 states have internal predecessors, (106), 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) [2021-08-27 11:05:45,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2021-08-27 11:05:45,497 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 100 [2021-08-27 11:05:45,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:05:45,497 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2021-08-27 11:05:45,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.4390243902439024) internal successors, (100), 41 states have internal predecessors, (100), 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) [2021-08-27 11:05:45,497 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2021-08-27 11:05:45,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-08-27 11:05:45,498 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:05:45,498 INFO L512 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 1, 1] [2021-08-27 11:05:45,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-08-27 11:05:45,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:05:45,713 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 11:05:45,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:05:45,713 INFO L82 PathProgramCache]: Analyzing trace with hash -119266781, now seen corresponding path program 20 times [2021-08-27 11:05:45,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:05:45,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345982358] [2021-08-27 11:05:45,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:05:45,713 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:05:45,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:05:46,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 0 proven. 1030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:46,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:05:46,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345982358] [2021-08-27 11:05:46,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345982358] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:46,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612473718] [2021-08-27 11:05:46,261 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 11:05:46,261 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:05:46,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:05:46,262 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 11:05:46,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-08-27 11:05:46,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 11:05:46,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 11:05:46,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 43 conjunts are in the unsatisfiable core [2021-08-27 11:05:46,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 11:05:47,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 0 proven. 1030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:47,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612473718] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:47,011 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 11:05:47,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2021-08-27 11:05:47,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453423616] [2021-08-27 11:05:47,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-08-27 11:05:47,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:05:47,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-08-27 11:05:47,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=505, Invalid=1387, Unknown=0, NotChecked=0, Total=1892 [2021-08-27 11:05:47,012 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand has 44 states, 43 states have (on average 2.441860465116279) internal successors, (105), 43 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:05:47,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:05:47,383 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2021-08-27 11:05:47,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-08-27 11:05:47,384 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 2.441860465116279) internal successors, (105), 43 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-08-27 11:05:47,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:05:47,384 INFO L225 Difference]: With dead ends: 113 [2021-08-27 11:05:47,384 INFO L226 Difference]: Without dead ends: 112 [2021-08-27 11:05:47,385 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 740.3ms TimeCoverageRelationStatistics Valid=1219, Invalid=2941, Unknown=0, NotChecked=0, Total=4160 [2021-08-27 11:05:47,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-08-27 11:05:47,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2021-08-27 11:05:47,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.009090909090909) internal successors, (111), 110 states have internal predecessors, (111), 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) [2021-08-27 11:05:47,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2021-08-27 11:05:47,387 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 105 [2021-08-27 11:05:47,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:05:47,387 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2021-08-27 11:05:47,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 2.441860465116279) internal successors, (105), 43 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:05:47,388 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2021-08-27 11:05:47,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-08-27 11:05:47,388 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:05:47,388 INFO L512 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 1, 1] [2021-08-27 11:05:47,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-08-27 11:05:47,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-08-27 11:05:47,601 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 11:05:47,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:05:47,601 INFO L82 PathProgramCache]: Analyzing trace with hash 953284081, now seen corresponding path program 21 times [2021-08-27 11:05:47,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:05:47,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055274428] [2021-08-27 11:05:47,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:05:47,601 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:05:47,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:05:48,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 0 proven. 1134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:48,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:05:48,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055274428] [2021-08-27 11:05:48,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055274428] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:48,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050239968] [2021-08-27 11:05:48,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 11:05:48,221 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:05:48,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:05:48,222 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 11:05:48,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-08-27 11:05:48,709 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-08-27 11:05:48,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 11:05:48,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 45 conjunts are in the unsatisfiable core [2021-08-27 11:05:48,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 11:05:49,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 0 proven. 1134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:49,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050239968] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:49,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 11:05:49,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2021-08-27 11:05:49,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965628227] [2021-08-27 11:05:49,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-08-27 11:05:49,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:05:49,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-08-27 11:05:49,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2021-08-27 11:05:49,014 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand has 46 states, 45 states have (on average 2.4444444444444446) internal successors, (110), 45 states have internal predecessors, (110), 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) [2021-08-27 11:05:49,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:05:49,427 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2021-08-27 11:05:49,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-08-27 11:05:49,427 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.4444444444444446) internal successors, (110), 45 states have internal predecessors, (110), 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 110 [2021-08-27 11:05:49,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:05:49,428 INFO L225 Difference]: With dead ends: 118 [2021-08-27 11:05:49,428 INFO L226 Difference]: Without dead ends: 117 [2021-08-27 11:05:49,429 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 842.1ms TimeCoverageRelationStatistics Valid=1332, Invalid=3224, Unknown=0, NotChecked=0, Total=4556 [2021-08-27 11:05:49,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-08-27 11:05:49,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2021-08-27 11:05:49,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.008695652173913) internal successors, (116), 115 states have internal predecessors, (116), 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) [2021-08-27 11:05:49,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2021-08-27 11:05:49,431 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 110 [2021-08-27 11:05:49,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:05:49,431 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2021-08-27 11:05:49,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.4444444444444446) internal successors, (110), 45 states have internal predecessors, (110), 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) [2021-08-27 11:05:49,432 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2021-08-27 11:05:49,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-08-27 11:05:49,432 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:05:49,432 INFO L512 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1] [2021-08-27 11:05:49,449 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-08-27 11:05:49,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-08-27 11:05:49,633 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 11:05:49,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:05:49,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1393971939, now seen corresponding path program 22 times [2021-08-27 11:05:49,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:05:49,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46382056] [2021-08-27 11:05:49,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:05:49,633 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:05:49,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:05:50,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:50,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:05:50,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46382056] [2021-08-27 11:05:50,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46382056] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:50,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153113877] [2021-08-27 11:05:50,326 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-27 11:05:50,326 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:05:50,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:05:50,327 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 11:05:50,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-08-27 11:05:50,851 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-27 11:05:50,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 11:05:50,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 47 conjunts are in the unsatisfiable core [2021-08-27 11:05:50,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 11:05:51,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:51,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153113877] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:51,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 11:05:51,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2021-08-27 11:05:51,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799373625] [2021-08-27 11:05:51,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-08-27 11:05:51,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:05:51,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-08-27 11:05:51,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2021-08-27 11:05:51,224 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand has 48 states, 47 states have (on average 2.4468085106382977) internal successors, (115), 47 states have internal predecessors, (115), 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) [2021-08-27 11:05:51,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:05:51,658 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2021-08-27 11:05:51,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-08-27 11:05:51,659 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.4468085106382977) internal successors, (115), 47 states have internal predecessors, (115), 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 115 [2021-08-27 11:05:51,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:05:51,659 INFO L225 Difference]: With dead ends: 123 [2021-08-27 11:05:51,659 INFO L226 Difference]: Without dead ends: 122 [2021-08-27 11:05:51,661 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 923.8ms TimeCoverageRelationStatistics Valid=1450, Invalid=3520, Unknown=0, NotChecked=0, Total=4970 [2021-08-27 11:05:51,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-08-27 11:05:51,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2021-08-27 11:05:51,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.0083333333333333) internal successors, (121), 120 states have internal predecessors, (121), 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) [2021-08-27 11:05:51,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2021-08-27 11:05:51,663 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 115 [2021-08-27 11:05:51,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:05:51,663 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2021-08-27 11:05:51,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.4468085106382977) internal successors, (115), 47 states have internal predecessors, (115), 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) [2021-08-27 11:05:51,663 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2021-08-27 11:05:51,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-08-27 11:05:51,663 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:05:51,663 INFO L512 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 1, 1] [2021-08-27 11:05:51,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-08-27 11:05:51,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:05:51,864 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 11:05:51,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:05:51,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1642054351, now seen corresponding path program 23 times [2021-08-27 11:05:51,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:05:51,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698621063] [2021-08-27 11:05:51,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:05:51,865 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:05:51,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:05:52,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1357 backedges. 0 proven. 1357 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:52,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:05:52,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698621063] [2021-08-27 11:05:52,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698621063] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:52,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150023405] [2021-08-27 11:05:52,580 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-27 11:05:52,580 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:05:52,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:05:52,581 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 11:05:52,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-08-27 11:05:53,185 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2021-08-27 11:05:53,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 11:05:53,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 49 conjunts are in the unsatisfiable core [2021-08-27 11:05:53,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 11:05:53,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1357 backedges. 0 proven. 1357 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:53,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150023405] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:53,501 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 11:05:53,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2021-08-27 11:05:53,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417342442] [2021-08-27 11:05:53,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-08-27 11:05:53,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:05:53,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-08-27 11:05:53,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=649, Invalid=1801, Unknown=0, NotChecked=0, Total=2450 [2021-08-27 11:05:53,503 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand has 50 states, 49 states have (on average 2.4489795918367347) internal successors, (120), 49 states have internal predecessors, (120), 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) [2021-08-27 11:05:53,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:05:53,969 INFO L93 Difference]: Finished difference Result 128 states and 128 transitions. [2021-08-27 11:05:53,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-08-27 11:05:53,970 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 2.4489795918367347) internal successors, (120), 49 states have internal predecessors, (120), 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 120 [2021-08-27 11:05:53,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:05:53,971 INFO L225 Difference]: With dead ends: 128 [2021-08-27 11:05:53,971 INFO L226 Difference]: Without dead ends: 127 [2021-08-27 11:05:53,971 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 994.5ms TimeCoverageRelationStatistics Valid=1573, Invalid=3829, Unknown=0, NotChecked=0, Total=5402 [2021-08-27 11:05:53,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-08-27 11:05:53,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 126. [2021-08-27 11:05:53,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.008) internal successors, (126), 125 states have internal predecessors, (126), 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) [2021-08-27 11:05:53,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 126 transitions. [2021-08-27 11:05:53,973 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 126 transitions. Word has length 120 [2021-08-27 11:05:53,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:05:53,974 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 126 transitions. [2021-08-27 11:05:53,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 2.4489795918367347) internal successors, (120), 49 states have internal predecessors, (120), 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) [2021-08-27 11:05:53,974 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 126 transitions. [2021-08-27 11:05:53,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-08-27 11:05:53,974 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:05:53,975 INFO L512 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 1, 1] [2021-08-27 11:05:53,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-08-27 11:05:54,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:05:54,177 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 11:05:54,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:05:54,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1546480733, now seen corresponding path program 24 times [2021-08-27 11:05:54,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:05:54,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87139844] [2021-08-27 11:05:54,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:05:54,178 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:05:54,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:05:54,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1476 backedges. 0 proven. 1476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:54,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:05:54,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87139844] [2021-08-27 11:05:54,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87139844] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:54,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643225331] [2021-08-27 11:05:54,921 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-27 11:05:54,921 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:05:54,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:05:54,922 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 11:05:54,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-08-27 11:05:55,594 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-08-27 11:05:55,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 11:05:55,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 51 conjunts are in the unsatisfiable core [2021-08-27 11:05:55,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 11:05:55,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1476 backedges. 0 proven. 1476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:55,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643225331] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:55,926 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 11:05:55,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2021-08-27 11:05:55,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907867002] [2021-08-27 11:05:55,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-08-27 11:05:55,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:05:55,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-08-27 11:05:55,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2021-08-27 11:05:55,928 INFO L87 Difference]: Start difference. First operand 126 states and 126 transitions. Second operand has 52 states, 51 states have (on average 2.450980392156863) internal successors, (125), 51 states have internal predecessors, (125), 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) [2021-08-27 11:05:56,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:05:56,413 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2021-08-27 11:05:56,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-08-27 11:05:56,414 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 2.450980392156863) internal successors, (125), 51 states have internal predecessors, (125), 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 125 [2021-08-27 11:05:56,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:05:56,414 INFO L225 Difference]: With dead ends: 133 [2021-08-27 11:05:56,414 INFO L226 Difference]: Without dead ends: 132 [2021-08-27 11:05:56,415 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 1039.2ms TimeCoverageRelationStatistics Valid=1701, Invalid=4151, Unknown=0, NotChecked=0, Total=5852 [2021-08-27 11:05:56,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-08-27 11:05:56,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 131. [2021-08-27 11:05:56,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.0076923076923077) internal successors, (131), 130 states have internal predecessors, (131), 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) [2021-08-27 11:05:56,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2021-08-27 11:05:56,417 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 125 [2021-08-27 11:05:56,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:05:56,417 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2021-08-27 11:05:56,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 2.450980392156863) internal successors, (125), 51 states have internal predecessors, (125), 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) [2021-08-27 11:05:56,418 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2021-08-27 11:05:56,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-08-27 11:05:56,418 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:05:56,418 INFO L512 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 1, 1] [2021-08-27 11:05:56,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-08-27 11:05:56,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-08-27 11:05:56,629 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 11:05:56,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:05:56,629 INFO L82 PathProgramCache]: Analyzing trace with hash -525437839, now seen corresponding path program 25 times [2021-08-27 11:05:56,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:05:56,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984136884] [2021-08-27 11:05:56,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:05:56,629 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:05:56,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:05:57,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 1600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:57,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:05:57,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984136884] [2021-08-27 11:05:57,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984136884] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:57,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699379982] [2021-08-27 11:05:57,428 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-27 11:05:57,428 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:05:57,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:05:57,429 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 11:05:57,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-08-27 11:05:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:05:58,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 53 conjunts are in the unsatisfiable core [2021-08-27 11:05:58,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 11:05:58,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 1600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:05:58,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699379982] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:05:58,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 11:05:58,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2021-08-27 11:05:58,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696925690] [2021-08-27 11:05:58,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-08-27 11:05:58,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:05:58,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-08-27 11:05:58,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=755, Invalid=2107, Unknown=0, NotChecked=0, Total=2862 [2021-08-27 11:05:58,424 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand has 54 states, 53 states have (on average 2.452830188679245) internal successors, (130), 53 states have internal predecessors, (130), 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) [2021-08-27 11:05:59,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:05:59,015 INFO L93 Difference]: Finished difference Result 138 states and 138 transitions. [2021-08-27 11:05:59,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-08-27 11:05:59,016 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 2.452830188679245) internal successors, (130), 53 states have internal predecessors, (130), 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 130 [2021-08-27 11:05:59,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:05:59,017 INFO L225 Difference]: With dead ends: 138 [2021-08-27 11:05:59,017 INFO L226 Difference]: Without dead ends: 137 [2021-08-27 11:05:59,017 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 1139.3ms TimeCoverageRelationStatistics Valid=1834, Invalid=4486, Unknown=0, NotChecked=0, Total=6320 [2021-08-27 11:05:59,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-08-27 11:05:59,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 136. [2021-08-27 11:05:59,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.0074074074074073) internal successors, (136), 135 states have internal predecessors, (136), 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) [2021-08-27 11:05:59,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 136 transitions. [2021-08-27 11:05:59,020 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 136 transitions. Word has length 130 [2021-08-27 11:05:59,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:05:59,020 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 136 transitions. [2021-08-27 11:05:59,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 2.452830188679245) internal successors, (130), 53 states have internal predecessors, (130), 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) [2021-08-27 11:05:59,020 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 136 transitions. [2021-08-27 11:05:59,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-08-27 11:05:59,021 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:05:59,021 INFO L512 BasicCegarLoop]: trace histogram [27, 27, 27, 26, 26, 1, 1] [2021-08-27 11:05:59,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-08-27 11:05:59,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-08-27 11:05:59,229 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 11:05:59,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:05:59,229 INFO L82 PathProgramCache]: Analyzing trace with hash 298116195, now seen corresponding path program 26 times [2021-08-27 11:05:59,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:05:59,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349715642] [2021-08-27 11:05:59,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:05:59,229 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:05:59,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:06:00,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1729 backedges. 0 proven. 1729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:06:00,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:06:00,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349715642] [2021-08-27 11:06:00,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349715642] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:06:00,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492049259] [2021-08-27 11:06:00,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 11:06:00,136 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:06:00,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:06:00,136 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 11:06:00,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-08-27 11:06:00,846 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 11:06:00,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 11:06:00,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 55 conjunts are in the unsatisfiable core [2021-08-27 11:06:00,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 11:06:01,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1729 backedges. 0 proven. 1729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:06:01,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492049259] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:06:01,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 11:06:01,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2021-08-27 11:06:01,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463705258] [2021-08-27 11:06:01,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-08-27 11:06:01,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:06:01,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-08-27 11:06:01,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=811, Invalid=2269, Unknown=0, NotChecked=0, Total=3080 [2021-08-27 11:06:01,211 INFO L87 Difference]: Start difference. First operand 136 states and 136 transitions. Second operand has 56 states, 55 states have (on average 2.4545454545454546) internal successors, (135), 55 states have internal predecessors, (135), 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) [2021-08-27 11:06:01,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:06:01,761 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2021-08-27 11:06:01,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-08-27 11:06:01,761 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 2.4545454545454546) internal successors, (135), 55 states have internal predecessors, (135), 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 135 [2021-08-27 11:06:01,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:06:01,762 INFO L225 Difference]: With dead ends: 143 [2021-08-27 11:06:01,762 INFO L226 Difference]: Without dead ends: 142 [2021-08-27 11:06:01,763 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1027 ImplicationChecksByTransitivity, 1238.9ms TimeCoverageRelationStatistics Valid=1972, Invalid=4834, Unknown=0, NotChecked=0, Total=6806 [2021-08-27 11:06:01,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-08-27 11:06:01,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141. [2021-08-27 11:06:01,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.0071428571428571) internal successors, (141), 140 states have internal predecessors, (141), 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) [2021-08-27 11:06:01,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2021-08-27 11:06:01,765 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 135 [2021-08-27 11:06:01,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:06:01,765 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2021-08-27 11:06:01,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 2.4545454545454546) internal successors, (135), 55 states have internal predecessors, (135), 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) [2021-08-27 11:06:01,765 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2021-08-27 11:06:01,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-08-27 11:06:01,766 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:06:01,766 INFO L512 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 1, 1] [2021-08-27 11:06:01,784 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-08-27 11:06:01,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-08-27 11:06:01,967 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 11:06:01,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:06:01,967 INFO L82 PathProgramCache]: Analyzing trace with hash 626039729, now seen corresponding path program 27 times [2021-08-27 11:06:01,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:06:01,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449487292] [2021-08-27 11:06:01,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:06:01,967 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:06:01,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:06:02,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:06:02,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:06:02,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449487292] [2021-08-27 11:06:02,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449487292] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:06:02,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46986347] [2021-08-27 11:06:02,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 11:06:02,895 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:06:02,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:06:02,896 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 11:06:02,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-08-27 11:06:03,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2021-08-27 11:06:03,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 11:06:03,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 57 conjunts are in the unsatisfiable core [2021-08-27 11:06:03,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 11:06:04,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:06:04,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46986347] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:06:04,029 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 11:06:04,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2021-08-27 11:06:04,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181816787] [2021-08-27 11:06:04,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-08-27 11:06:04,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:06:04,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-08-27 11:06:04,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=869, Invalid=2437, Unknown=0, NotChecked=0, Total=3306 [2021-08-27 11:06:04,030 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand has 58 states, 57 states have (on average 2.456140350877193) internal successors, (140), 57 states have internal predecessors, (140), 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) [2021-08-27 11:06:04,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:06:04,657 INFO L93 Difference]: Finished difference Result 148 states and 148 transitions. [2021-08-27 11:06:04,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-08-27 11:06:04,657 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 2.456140350877193) internal successors, (140), 57 states have internal predecessors, (140), 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 140 [2021-08-27 11:06:04,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:06:04,658 INFO L225 Difference]: With dead ends: 148 [2021-08-27 11:06:04,658 INFO L226 Difference]: Without dead ends: 147 [2021-08-27 11:06:04,659 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1107 ImplicationChecksByTransitivity, 1317.2ms TimeCoverageRelationStatistics Valid=2115, Invalid=5195, Unknown=0, NotChecked=0, Total=7310 [2021-08-27 11:06:04,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-08-27 11:06:04,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 146. [2021-08-27 11:06:04,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.006896551724138) internal successors, (146), 145 states have internal predecessors, (146), 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) [2021-08-27 11:06:04,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2021-08-27 11:06:04,661 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 140 [2021-08-27 11:06:04,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:06:04,661 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2021-08-27 11:06:04,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 2.456140350877193) internal successors, (140), 57 states have internal predecessors, (140), 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) [2021-08-27 11:06:04,662 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2021-08-27 11:06:04,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-08-27 11:06:04,662 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:06:04,662 INFO L512 BasicCegarLoop]: trace histogram [29, 29, 29, 28, 28, 1, 1] [2021-08-27 11:06:04,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-08-27 11:06:04,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:06:04,869 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 11:06:04,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:06:04,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1553548579, now seen corresponding path program 28 times [2021-08-27 11:06:04,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:06:04,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57342851] [2021-08-27 11:06:04,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:06:04,869 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:06:04,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:06:05,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 0 proven. 2002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:06:05,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:06:05,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57342851] [2021-08-27 11:06:05,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57342851] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:06:05,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986564774] [2021-08-27 11:06:05,841 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-27 11:06:05,841 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:06:05,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:06:05,842 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 11:06:05,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-08-27 11:06:06,651 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-27 11:06:06,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 11:06:06,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 59 conjunts are in the unsatisfiable core [2021-08-27 11:06:06,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 11:06:07,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 0 proven. 2002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:06:07,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986564774] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:06:07,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 11:06:07,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2021-08-27 11:06:07,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34792506] [2021-08-27 11:06:07,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2021-08-27 11:06:07,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:06:07,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-08-27 11:06:07,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=929, Invalid=2611, Unknown=0, NotChecked=0, Total=3540 [2021-08-27 11:06:07,019 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand has 60 states, 59 states have (on average 2.457627118644068) internal successors, (145), 59 states have internal predecessors, (145), 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) [2021-08-27 11:06:07,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:06:07,681 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2021-08-27 11:06:07,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-08-27 11:06:07,681 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 2.457627118644068) internal successors, (145), 59 states have internal predecessors, (145), 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 145 [2021-08-27 11:06:07,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:06:07,681 INFO L225 Difference]: With dead ends: 153 [2021-08-27 11:06:07,682 INFO L226 Difference]: Without dead ends: 152 [2021-08-27 11:06:07,682 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1190 ImplicationChecksByTransitivity, 1369.9ms TimeCoverageRelationStatistics Valid=2263, Invalid=5569, Unknown=0, NotChecked=0, Total=7832 [2021-08-27 11:06:07,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-08-27 11:06:07,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 151. [2021-08-27 11:06:07,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.0066666666666666) internal successors, (151), 150 states have internal predecessors, (151), 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) [2021-08-27 11:06:07,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2021-08-27 11:06:07,684 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 145 [2021-08-27 11:06:07,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:06:07,685 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2021-08-27 11:06:07,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 2.457627118644068) internal successors, (145), 59 states have internal predecessors, (145), 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) [2021-08-27 11:06:07,685 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2021-08-27 11:06:07,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-08-27 11:06:07,685 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:06:07,686 INFO L512 BasicCegarLoop]: trace histogram [30, 30, 30, 29, 29, 1, 1] [2021-08-27 11:06:07,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-08-27 11:06:07,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:06:07,901 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 11:06:07,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:06:07,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1747275023, now seen corresponding path program 29 times [2021-08-27 11:06:07,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:06:07,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618958842] [2021-08-27 11:06:07,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:06:07,901 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:06:07,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:06:09,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2146 backedges. 0 proven. 2146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:06:09,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:06:09,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618958842] [2021-08-27 11:06:09,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618958842] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:06:09,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558161470] [2021-08-27 11:06:09,009 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-27 11:06:09,009 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:06:09,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:06:09,010 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 11:06:09,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-08-27 11:06:09,987 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2021-08-27 11:06:09,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 11:06:09,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 61 conjunts are in the unsatisfiable core [2021-08-27 11:06:09,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 11:06:10,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2146 backedges. 0 proven. 2146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:06:10,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558161470] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:06:10,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 11:06:10,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2021-08-27 11:06:10,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913049267] [2021-08-27 11:06:10,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2021-08-27 11:06:10,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:06:10,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-08-27 11:06:10,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=991, Invalid=2791, Unknown=0, NotChecked=0, Total=3782 [2021-08-27 11:06:10,396 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand has 62 states, 61 states have (on average 2.459016393442623) internal successors, (150), 61 states have internal predecessors, (150), 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) [2021-08-27 11:06:11,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:06:11,074 INFO L93 Difference]: Finished difference Result 158 states and 158 transitions. [2021-08-27 11:06:11,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-08-27 11:06:11,074 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 2.459016393442623) internal successors, (150), 61 states have internal predecessors, (150), 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 150 [2021-08-27 11:06:11,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:06:11,075 INFO L225 Difference]: With dead ends: 158 [2021-08-27 11:06:11,075 INFO L226 Difference]: Without dead ends: 157 [2021-08-27 11:06:11,076 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1276 ImplicationChecksByTransitivity, 1529.9ms TimeCoverageRelationStatistics Valid=2416, Invalid=5956, Unknown=0, NotChecked=0, Total=8372 [2021-08-27 11:06:11,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-08-27 11:06:11,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2021-08-27 11:06:11,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 1.0064516129032257) internal successors, (156), 155 states have internal predecessors, (156), 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) [2021-08-27 11:06:11,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 156 transitions. [2021-08-27 11:06:11,078 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 156 transitions. Word has length 150 [2021-08-27 11:06:11,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:06:11,079 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 156 transitions. [2021-08-27 11:06:11,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 2.459016393442623) internal successors, (150), 61 states have internal predecessors, (150), 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) [2021-08-27 11:06:11,079 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 156 transitions. [2021-08-27 11:06:11,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-08-27 11:06:11,079 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:06:11,080 INFO L512 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 1, 1] [2021-08-27 11:06:11,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-08-27 11:06:11,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:06:11,297 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 11:06:11,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:06:11,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1661225501, now seen corresponding path program 30 times [2021-08-27 11:06:11,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:06:11,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293986932] [2021-08-27 11:06:11,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:06:11,297 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:06:11,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:06:13,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2295 backedges. 2295 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:06:13,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:06:13,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293986932] [2021-08-27 11:06:13,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293986932] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 11:06:13,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 11:06:13,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2021-08-27 11:06:13,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564424365] [2021-08-27 11:06:13,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2021-08-27 11:06:13,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:06:13,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-08-27 11:06:13,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2021-08-27 11:06:13,816 INFO L87 Difference]: Start difference. First operand 156 states and 156 transitions. Second operand has 63 states, 63 states have (on average 2.4603174603174605) internal successors, (155), 62 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:06:14,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:06:14,126 INFO L93 Difference]: Finished difference Result 158 states and 158 transitions. [2021-08-27 11:06:14,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-08-27 11:06:14,126 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.4603174603174605) internal successors, (155), 62 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-08-27 11:06:14,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:06:14,127 INFO L225 Difference]: With dead ends: 158 [2021-08-27 11:06:14,127 INFO L226 Difference]: Without dead ends: 0 [2021-08-27 11:06:14,127 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 1 SyntacticMatches, 30 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 900 ImplicationChecksByTransitivity, 1894.1ms TimeCoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2021-08-27 11:06:14,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-27 11:06:14,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-27 11:06:14,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-08-27 11:06:14,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-27 11:06:14,128 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 155 [2021-08-27 11:06:14,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:06:14,128 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 11:06:14,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 2.4603174603174605) internal successors, (155), 62 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:06:14,128 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-27 11:06:14,129 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-27 11:06:14,130 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 11:06:14,131 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 11:06:14,131 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 11:06:14,131 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 11:06:14,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-08-27 11:06:14,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-27 11:06:14,140 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:06:14,179 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:06:14,180 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:06:14,515 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 9) no Hoare annotation was computed. [2021-08-27 11:06:14,515 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-27 11:06:14,515 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 10) no Hoare annotation was computed. [2021-08-27 11:06:14,515 INFO L853 garLoopResultBuilder]: At program point L19(lines 18 20) the Hoare annotation is: (<= ULTIMATE.start_mlog_~x 2147483647) [2021-08-27 11:06:14,516 INFO L857 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2021-08-27 11:06:14,516 INFO L857 garLoopResultBuilder]: For program point L9-1(line 9) no Hoare annotation was computed. [2021-08-27 11:06:14,517 INFO L853 garLoopResultBuilder]: At program point L7-2(lines 7 12) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_mlog_~res~0))) (or (and (<= ULTIMATE.start_mlog_~x 2047) .cse0 (<= ULTIMATE.start_mlog_~res~0 20)) (and (<= ULTIMATE.start_mlog_~x 134217727) (<= ULTIMATE.start_mlog_~res~0 4) .cse0) (and .cse0 (<= ULTIMATE.start_mlog_~res~0 27) (<= ULTIMATE.start_mlog_~x 15)) (and (<= ULTIMATE.start_mlog_~x 511) .cse0 (<= ULTIMATE.start_mlog_~res~0 22)) (and (<= ULTIMATE.start_mlog_~x 536870911) .cse0 (<= ULTIMATE.start_mlog_~res~0 2)) (and .cse0 (<= ULTIMATE.start_mlog_~res~0 5) (<= ULTIMATE.start_mlog_~x 67108863)) (and .cse0 (<= ULTIMATE.start_mlog_~x 131071) (<= ULTIMATE.start_mlog_~res~0 14)) (and (<= ULTIMATE.start_mlog_~x 262143) (<= ULTIMATE.start_mlog_~res~0 13) .cse0) (and (<= ULTIMATE.start_mlog_~res~0 12) .cse0 (<= ULTIMATE.start_mlog_~x 524287)) (and .cse0 (<= ULTIMATE.start_mlog_~res~0 29) (<= ULTIMATE.start_mlog_~x 3)) (and .cse0 (<= ULTIMATE.start_mlog_~res~0 1) (<= ULTIMATE.start_mlog_~x 1073741823)) (and (<= ULTIMATE.start_mlog_~x 63) .cse0 (<= ULTIMATE.start_mlog_~res~0 25)) (and (<= ULTIMATE.start_mlog_~res~0 17) .cse0 (<= ULTIMATE.start_mlog_~x 16383)) (and (<= ULTIMATE.start_mlog_~x 2097151) .cse0 (<= ULTIMATE.start_mlog_~res~0 10)) (and (<= ULTIMATE.start_mlog_~x 127) .cse0 (<= ULTIMATE.start_mlog_~res~0 24)) (and (<= ULTIMATE.start_mlog_~x 32767) .cse0 (<= ULTIMATE.start_mlog_~res~0 16)) (and (<= ULTIMATE.start_mlog_~res~0 3) .cse0 (<= ULTIMATE.start_mlog_~x 268435455)) (and .cse0 (<= ULTIMATE.start_mlog_~x 1)) (and (<= ULTIMATE.start_mlog_~res~0 15) .cse0 (<= ULTIMATE.start_mlog_~x 65535)) (and .cse0 (<= ULTIMATE.start_mlog_~x 31) (<= ULTIMATE.start_mlog_~res~0 26)) (and .cse0 (<= ULTIMATE.start_mlog_~x 4194303) (<= ULTIMATE.start_mlog_~res~0 9)) (and .cse0 (<= ULTIMATE.start_mlog_~res~0 0) (<= ULTIMATE.start_mlog_~x 2147483647)) (and (<= ULTIMATE.start_mlog_~res~0 7) .cse0 (<= ULTIMATE.start_mlog_~x 16777215)) (and (<= ULTIMATE.start_mlog_~res~0 11) .cse0 (<= ULTIMATE.start_mlog_~x 1048575)) (and (<= ULTIMATE.start_mlog_~res~0 21) .cse0 (<= ULTIMATE.start_mlog_~x 1023)) (and (<= ULTIMATE.start_mlog_~res~0 23) .cse0 (<= ULTIMATE.start_mlog_~x 255)) (and .cse0 (<= ULTIMATE.start_mlog_~x 8191) (<= ULTIMATE.start_mlog_~res~0 18)) (and (<= ULTIMATE.start_mlog_~x 4095) .cse0 (<= ULTIMATE.start_mlog_~res~0 19)) (and (<= ULTIMATE.start_mlog_~x 33554431) (<= ULTIMATE.start_mlog_~res~0 6) .cse0) (and (<= ULTIMATE.start_mlog_~x 7) (<= ULTIMATE.start_mlog_~res~0 28) .cse0) (and (<= ULTIMATE.start_mlog_~x 8388607) (<= ULTIMATE.start_mlog_~res~0 8) .cse0))) [2021-08-27 11:06:14,517 INFO L857 garLoopResultBuilder]: For program point L7-3(lines 7 12) no Hoare annotation was computed. [2021-08-27 11:06:14,517 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 9) no Hoare annotation was computed. [2021-08-27 11:06:14,517 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 10) no Hoare annotation was computed. [2021-08-27 11:06:14,517 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-27 11:06:14,517 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-27 11:06:14,518 INFO L853 garLoopResultBuilder]: At program point L14(lines 3 16) the Hoare annotation is: (<= ULTIMATE.start_mlog_~x 2147483647) [2021-08-27 11:06:14,518 INFO L857 garLoopResultBuilder]: For program point L10(line 10) no Hoare annotation was computed. [2021-08-27 11:06:14,518 INFO L857 garLoopResultBuilder]: For program point L10-1(line 10) no Hoare annotation was computed. [2021-08-27 11:06:14,521 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 11:06:14,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 11:06:14 BoogieIcfgContainer [2021-08-27 11:06:14,538 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 11:06:14,538 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 11:06:14,539 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 11:06:14,539 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 11:06:14,539 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:05:26" (3/4) ... [2021-08-27 11:06:14,541 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-27 11:06:14,546 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-27 11:06:14,546 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-08-27 11:06:14,570 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 11:06:14,571 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 11:06:14,572 INFO L168 Benchmark]: Toolchain (without parser) took 48723.06 ms. Allocated memory was 60.8 MB in the beginning and 474.0 MB in the end (delta: 413.1 MB). Free memory was 41.3 MB in the beginning and 385.9 MB in the end (delta: -344.7 MB). Peak memory consumption was 66.8 MB. Max. memory is 16.1 GB. [2021-08-27 11:06:14,572 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 60.8 MB. Free memory was 41.4 MB in the beginning and 41.3 MB in the end (delta: 32.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 11:06:14,572 INFO L168 Benchmark]: CACSL2BoogieTranslator took 103.75 ms. Allocated memory is still 60.8 MB. Free memory was 41.1 MB in the beginning and 32.6 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 11:06:14,572 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.80 ms. Allocated memory is still 60.8 MB. Free memory was 32.5 MB in the beginning and 31.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 11:06:14,573 INFO L168 Benchmark]: Boogie Preprocessor took 47.77 ms. Allocated memory is still 60.8 MB. Free memory was 31.2 MB in the beginning and 44.3 MB in the end (delta: -13.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 11:06:14,573 INFO L168 Benchmark]: RCFGBuilder took 200.88 ms. Allocated memory is still 60.8 MB. Free memory was 44.3 MB in the beginning and 34.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 11:06:14,573 INFO L168 Benchmark]: TraceAbstraction took 48315.87 ms. Allocated memory was 60.8 MB in the beginning and 474.0 MB in the end (delta: 413.1 MB). Free memory was 34.1 MB in the beginning and 388.0 MB in the end (delta: -353.9 MB). Peak memory consumption was 326.1 MB. Max. memory is 16.1 GB. [2021-08-27 11:06:14,573 INFO L168 Benchmark]: Witness Printer took 32.31 ms. Allocated memory is still 474.0 MB. Free memory was 388.0 MB in the beginning and 385.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 11:06:14,574 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 60.8 MB. Free memory was 41.4 MB in the beginning and 41.3 MB in the end (delta: 32.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 103.75 ms. Allocated memory is still 60.8 MB. Free memory was 41.1 MB in the beginning and 32.6 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 16.80 ms. Allocated memory is still 60.8 MB. Free memory was 32.5 MB in the beginning and 31.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 47.77 ms. Allocated memory is still 60.8 MB. Free memory was 31.2 MB in the beginning and 44.3 MB in the end (delta: -13.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 200.88 ms. Allocated memory is still 60.8 MB. Free memory was 44.3 MB in the beginning and 34.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 48315.87 ms. Allocated memory was 60.8 MB in the beginning and 474.0 MB in the end (delta: 413.1 MB). Free memory was 34.1 MB in the beginning and 388.0 MB in the end (delta: -353.9 MB). Peak memory consumption was 326.1 MB. Max. memory is 16.1 GB. * Witness Printer took 32.31 ms. Allocated memory is still 474.0 MB. Free memory was 388.0 MB in the beginning and 385.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 9]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 9]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 10]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 10]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 48267.7ms, OverallIterations: 33, TraceHistogramMax: 31, EmptinessCheckTime: 20.1ms, AutomataDifference: 9083.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 383.0ms, InitialAbstractionConstructionTime: 7.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 193 SDtfs, 2995 SDslu, 1804 SDs, 0 SdLazy, 3417 SolverSat, 108 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1725.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3783 GetRequests, 2292 SyntacticMatches, 30 SemanticMatches, 1461 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13950 ImplicationChecksByTransitivity, 18771.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=156occurred in iteration=32, InterpolantAutomatonStates: 1062, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 90.4ms AutomataMinimizationTime, 33 MinimizatonAttempts, 31 StatesRemovedByMinimization, 30 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 36 NumberOfFragments, 314 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 46.3ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 90 FormulaSimplificationTreeSizeReductionInter, 332.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 203.0ms SsaConstructionTime, 1613.4ms SatisfiabilityAnalysisTime, 21549.5ms InterpolantComputationTime, 4809 NumberOfCodeBlocks, 4809 NumberOfCodeBlocksAsserted, 292 NumberOfCheckSat, 4747 ConstructedInterpolants, 0 QuantifiedInterpolants, 14359 SizeOfPredicates, 464 NumberOfNonLiveVariables, 5307 ConjunctsInSsa, 957 ConjunctsInUnsatCore, 62 InterpolantComputations, 4 PerfectInterpolantSequences, 2295/46375 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((((x <= 2047 && 0 <= res) && res <= 20) || ((x <= 134217727 && res <= 4) && 0 <= res)) || ((0 <= res && res <= 27) && x <= 15)) || ((x <= 511 && 0 <= res) && res <= 22)) || ((x <= 536870911 && 0 <= res) && res <= 2)) || ((0 <= res && res <= 5) && x <= 67108863)) || ((0 <= res && x <= 131071) && res <= 14)) || ((x <= 262143 && res <= 13) && 0 <= res)) || ((res <= 12 && 0 <= res) && x <= 524287)) || ((0 <= res && res <= 29) && x <= 3)) || ((0 <= res && res <= 1) && x <= 1073741823)) || ((x <= 63 && 0 <= res) && res <= 25)) || ((res <= 17 && 0 <= res) && x <= 16383)) || ((x <= 2097151 && 0 <= res) && res <= 10)) || ((x <= 127 && 0 <= res) && res <= 24)) || ((x <= 32767 && 0 <= res) && res <= 16)) || ((res <= 3 && 0 <= res) && x <= 268435455)) || (0 <= res && x <= 1)) || ((res <= 15 && 0 <= res) && x <= 65535)) || ((0 <= res && x <= 31) && res <= 26)) || ((0 <= res && x <= 4194303) && res <= 9)) || ((0 <= res && res <= 0) && x <= 2147483647)) || ((res <= 7 && 0 <= res) && x <= 16777215)) || ((res <= 11 && 0 <= res) && x <= 1048575)) || ((res <= 21 && 0 <= res) && x <= 1023)) || ((res <= 23 && 0 <= res) && x <= 255)) || ((0 <= res && x <= 8191) && res <= 18)) || ((x <= 4095 && 0 <= res) && res <= 19)) || ((x <= 33554431 && res <= 6) && 0 <= res)) || ((x <= 7 && res <= 28) && 0 <= res)) || ((x <= 8388607 && res <= 8) && 0 <= res) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: x <= 2147483647 - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: x <= 2147483647 RESULT: Ultimate proved your program to be correct! [2021-08-27 11:06:14,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...