./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-numeric/twisted.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 791161d1 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/twisted.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 1b68c797f7da07f29717590596e5fa31674f85e16d7b32a9335da92aff43a272 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 13:27:10,917 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 13:27:10,919 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 13:27:10,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 13:27:10,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 13:27:10,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 13:27:10,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 13:27:10,966 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 13:27:10,968 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 13:27:10,971 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 13:27:10,972 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 13:27:10,974 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 13:27:10,975 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 13:27:10,976 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 13:27:10,978 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 13:27:10,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 13:27:10,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 13:27:10,983 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 13:27:10,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 13:27:10,989 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 13:27:10,991 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 13:27:10,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 13:27:10,992 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 13:27:10,993 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 13:27:10,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 13:27:11,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 13:27:11,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 13:27:11,002 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 13:27:11,003 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 13:27:11,003 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 13:27:11,004 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 13:27:11,004 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 13:27:11,006 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 13:27:11,006 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 13:27:11,007 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 13:27:11,008 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 13:27:11,008 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 13:27:11,009 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 13:27:11,009 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 13:27:11,009 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 13:27:11,010 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 13:27:11,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 13:27:11,012 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-07-23 13:27:11,042 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 13:27:11,042 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 13:27:11,043 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 13:27:11,043 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 13:27:11,043 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 13:27:11,044 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 13:27:11,044 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 13:27:11,044 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 13:27:11,045 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 13:27:11,045 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 13:27:11,046 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 13:27:11,046 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 13:27:11,046 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 13:27:11,046 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-23 13:27:11,046 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 13:27:11,046 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-23 13:27:11,047 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-23 13:27:11,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 13:27:11,047 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 13:27:11,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-23 13:27:11,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 13:27:11,049 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 13:27:11,049 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 13:27:11,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 13:27:11,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 13:27:11,050 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 13:27:11,050 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-23 13:27:11,050 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 13:27:11,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-23 13:27:11,050 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-23 13:27:11,051 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b68c797f7da07f29717590596e5fa31674f85e16d7b32a9335da92aff43a272 [2022-07-23 13:27:11,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 13:27:11,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 13:27:11,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 13:27:11,292 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 13:27:11,293 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 13:27:11,294 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/twisted.c [2022-07-23 13:27:11,357 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b36f4144/0066c17c518a437a8de76e04513f3b48/FLAGc1e53ff53 [2022-07-23 13:27:11,784 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 13:27:11,785 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/twisted.c [2022-07-23 13:27:11,792 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b36f4144/0066c17c518a437a8de76e04513f3b48/FLAGc1e53ff53 [2022-07-23 13:27:12,198 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b36f4144/0066c17c518a437a8de76e04513f3b48 [2022-07-23 13:27:12,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 13:27:12,201 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 13:27:12,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 13:27:12,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 13:27:12,206 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 13:27:12,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 01:27:12" (1/1) ... [2022-07-23 13:27:12,208 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f6039e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:27:12, skipping insertion in model container [2022-07-23 13:27:12,208 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 01:27:12" (1/1) ... [2022-07-23 13:27:12,214 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 13:27:12,223 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 13:27:12,359 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 13:27:12,363 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 13:27:12,380 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 13:27:12,389 INFO L208 MainTranslator]: Completed translation [2022-07-23 13:27:12,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:27:12 WrapperNode [2022-07-23 13:27:12,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 13:27:12,392 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 13:27:12,392 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 13:27:12,394 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 13:27:12,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:27:12" (1/1) ... [2022-07-23 13:27:12,406 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:27:12" (1/1) ... [2022-07-23 13:27:12,424 INFO L137 Inliner]: procedures = 5, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 45 [2022-07-23 13:27:12,424 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 13:27:12,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 13:27:12,426 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 13:27:12,426 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 13:27:12,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:27:12" (1/1) ... [2022-07-23 13:27:12,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:27:12" (1/1) ... [2022-07-23 13:27:12,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:27:12" (1/1) ... [2022-07-23 13:27:12,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:27:12" (1/1) ... [2022-07-23 13:27:12,442 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:27:12" (1/1) ... [2022-07-23 13:27:12,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:27:12" (1/1) ... [2022-07-23 13:27:12,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:27:12" (1/1) ... [2022-07-23 13:27:12,452 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 13:27:12,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 13:27:12,454 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 13:27:12,454 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 13:27:12,455 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:27:12" (1/1) ... [2022-07-23 13:27:12,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 13:27:12,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:27:12,484 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-23 13:27:12,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-23 13:27:12,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 13:27:12,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 13:27:12,557 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 13:27:12,558 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 13:27:12,636 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 13:27:12,641 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 13:27:12,641 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-23 13:27:12,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:27:12 BoogieIcfgContainer [2022-07-23 13:27:12,643 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 13:27:12,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-23 13:27:12,644 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-23 13:27:12,647 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-23 13:27:12,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 01:27:12" (1/3) ... [2022-07-23 13:27:12,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d4af257 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:27:12, skipping insertion in model container [2022-07-23 13:27:12,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:27:12" (2/3) ... [2022-07-23 13:27:12,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d4af257 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:27:12, skipping insertion in model container [2022-07-23 13:27:12,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:27:12" (3/3) ... [2022-07-23 13:27:12,650 INFO L111 eAbstractionObserver]: Analyzing ICFG twisted.c [2022-07-23 13:27:12,659 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-23 13:27:12,660 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-07-23 13:27:12,697 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-23 13:27:12,704 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7f82ef0e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@559b921f [2022-07-23 13:27:12,704 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-07-23 13:27:12,707 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:12,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-23 13:27:12,712 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:27:12,713 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-23 13:27:12,713 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:27:12,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:27:12,718 INFO L85 PathProgramCache]: Analyzing trace with hash 28694852, now seen corresponding path program 1 times [2022-07-23 13:27:12,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:27:12,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87719866] [2022-07-23 13:27:12,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:12,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:27:12,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:12,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:12,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:27:12,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87719866] [2022-07-23 13:27:12,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87719866] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:27:12,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:27:12,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 13:27:12,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496985297] [2022-07-23 13:27:12,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:27:12,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 13:27:12,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:27:12,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 13:27:12,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 13:27:12,945 INFO L87 Difference]: Start difference. First operand has 24 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:13,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:27:13,050 INFO L93 Difference]: Finished difference Result 66 states and 81 transitions. [2022-07-23 13:27:13,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 13:27:13,053 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-07-23 13:27:13,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:27:13,059 INFO L225 Difference]: With dead ends: 66 [2022-07-23 13:27:13,064 INFO L226 Difference]: Without dead ends: 36 [2022-07-23 13:27:13,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-23 13:27:13,070 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 22 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:27:13,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 45 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:27:13,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-07-23 13:27:13,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2022-07-23 13:27:13,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 27 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:13,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2022-07-23 13:27:13,113 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 5 [2022-07-23 13:27:13,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:27:13,114 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2022-07-23 13:27:13,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:13,114 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2022-07-23 13:27:13,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-23 13:27:13,115 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:27:13,115 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-23 13:27:13,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-23 13:27:13,117 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:27:13,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:27:13,119 INFO L85 PathProgramCache]: Analyzing trace with hash 889540457, now seen corresponding path program 1 times [2022-07-23 13:27:13,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:27:13,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211786606] [2022-07-23 13:27:13,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:13,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:27:13,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:13,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:13,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:27:13,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211786606] [2022-07-23 13:27:13,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211786606] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:27:13,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:27:13,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 13:27:13,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668615831] [2022-07-23 13:27:13,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:27:13,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 13:27:13,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:27:13,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 13:27:13,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 13:27:13,169 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:13,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:27:13,217 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2022-07-23 13:27:13,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 13:27:13,218 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-07-23 13:27:13,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:27:13,219 INFO L225 Difference]: With dead ends: 28 [2022-07-23 13:27:13,219 INFO L226 Difference]: Without dead ends: 27 [2022-07-23 13:27:13,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-23 13:27:13,222 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 19 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:27:13,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 20 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:27:13,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-07-23 13:27:13,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-07-23 13:27:13,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:13,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2022-07-23 13:27:13,232 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 6 [2022-07-23 13:27:13,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:27:13,232 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2022-07-23 13:27:13,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:13,234 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2022-07-23 13:27:13,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-23 13:27:13,234 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:27:13,235 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:27:13,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-23 13:27:13,235 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:27:13,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:27:13,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1805903811, now seen corresponding path program 1 times [2022-07-23 13:27:13,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:27:13,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698479684] [2022-07-23 13:27:13,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:13,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:27:13,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:13,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:13,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:27:13,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698479684] [2022-07-23 13:27:13,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698479684] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:27:13,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:27:13,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 13:27:13,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775059316] [2022-07-23 13:27:13,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:27:13,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 13:27:13,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:27:13,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 13:27:13,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 13:27:13,271 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:13,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:27:13,325 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2022-07-23 13:27:13,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 13:27:13,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-23 13:27:13,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:27:13,326 INFO L225 Difference]: With dead ends: 40 [2022-07-23 13:27:13,326 INFO L226 Difference]: Without dead ends: 39 [2022-07-23 13:27:13,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 13:27:13,328 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 8 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:27:13,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 24 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:27:13,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-07-23 13:27:13,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2022-07-23 13:27:13,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 31 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:13,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2022-07-23 13:27:13,335 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 7 [2022-07-23 13:27:13,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:27:13,335 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2022-07-23 13:27:13,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:13,341 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2022-07-23 13:27:13,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-23 13:27:13,341 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:27:13,342 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:27:13,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-23 13:27:13,342 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:27:13,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:27:13,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1805903861, now seen corresponding path program 1 times [2022-07-23 13:27:13,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:27:13,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907355394] [2022-07-23 13:27:13,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:13,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:27:13,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:13,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:13,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:27:13,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907355394] [2022-07-23 13:27:13,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907355394] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:27:13,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:27:13,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 13:27:13,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139552149] [2022-07-23 13:27:13,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:27:13,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 13:27:13,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:27:13,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 13:27:13,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 13:27:13,389 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:13,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:27:13,430 INFO L93 Difference]: Finished difference Result 50 states and 64 transitions. [2022-07-23 13:27:13,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 13:27:13,431 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-23 13:27:13,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:27:13,435 INFO L225 Difference]: With dead ends: 50 [2022-07-23 13:27:13,436 INFO L226 Difference]: Without dead ends: 49 [2022-07-23 13:27:13,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-23 13:27:13,438 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 15 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:27:13,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 41 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:27:13,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-07-23 13:27:13,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 41. [2022-07-23 13:27:13,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.5277777777777777) internal successors, (55), 40 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) [2022-07-23 13:27:13,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 55 transitions. [2022-07-23 13:27:13,451 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 55 transitions. Word has length 7 [2022-07-23 13:27:13,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:27:13,452 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 55 transitions. [2022-07-23 13:27:13,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:13,452 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 55 transitions. [2022-07-23 13:27:13,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-23 13:27:13,452 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:27:13,453 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:27:13,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-23 13:27:13,453 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:27:13,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:27:13,454 INFO L85 PathProgramCache]: Analyzing trace with hash 148443370, now seen corresponding path program 1 times [2022-07-23 13:27:13,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:27:13,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145526889] [2022-07-23 13:27:13,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:13,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:27:13,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:13,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:13,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:27:13,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145526889] [2022-07-23 13:27:13,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145526889] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:27:13,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:27:13,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 13:27:13,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018121697] [2022-07-23 13:27:13,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:27:13,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 13:27:13,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:27:13,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 13:27:13,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 13:27:13,475 INFO L87 Difference]: Start difference. First operand 41 states and 55 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:13,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:27:13,497 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2022-07-23 13:27:13,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 13:27:13,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-07-23 13:27:13,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:27:13,498 INFO L225 Difference]: With dead ends: 46 [2022-07-23 13:27:13,499 INFO L226 Difference]: Without dead ends: 43 [2022-07-23 13:27:13,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 13:27:13,500 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 5 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:27:13,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 25 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:27:13,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-07-23 13:27:13,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2022-07-23 13:27:13,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 39 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:13,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 53 transitions. [2022-07-23 13:27:13,508 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 53 transitions. Word has length 8 [2022-07-23 13:27:13,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:27:13,508 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 53 transitions. [2022-07-23 13:27:13,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:13,508 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 53 transitions. [2022-07-23 13:27:13,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-23 13:27:13,509 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:27:13,509 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:27:13,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-23 13:27:13,509 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:27:13,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:27:13,510 INFO L85 PathProgramCache]: Analyzing trace with hash 148444908, now seen corresponding path program 1 times [2022-07-23 13:27:13,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:27:13,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845558476] [2022-07-23 13:27:13,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:13,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:27:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:13,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:13,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:27:13,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845558476] [2022-07-23 13:27:13,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845558476] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:27:13,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:27:13,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 13:27:13,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582606628] [2022-07-23 13:27:13,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:27:13,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 13:27:13,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:27:13,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 13:27:13,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 13:27:13,533 INFO L87 Difference]: Start difference. First operand 40 states and 53 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:13,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:27:13,552 INFO L93 Difference]: Finished difference Result 40 states and 53 transitions. [2022-07-23 13:27:13,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 13:27:13,553 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-07-23 13:27:13,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:27:13,554 INFO L225 Difference]: With dead ends: 40 [2022-07-23 13:27:13,554 INFO L226 Difference]: Without dead ends: 39 [2022-07-23 13:27:13,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-23 13:27:13,555 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 16 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:27:13,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 26 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:27:13,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-07-23 13:27:13,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-07-23 13:27:13,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 35 states have (on average 1.457142857142857) internal successors, (51), 38 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) [2022-07-23 13:27:13,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 51 transitions. [2022-07-23 13:27:13,562 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 51 transitions. Word has length 8 [2022-07-23 13:27:13,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:27:13,562 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 51 transitions. [2022-07-23 13:27:13,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:13,563 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 51 transitions. [2022-07-23 13:27:13,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-23 13:27:13,563 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:27:13,563 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:27:13,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-23 13:27:13,564 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:27:13,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:27:13,564 INFO L85 PathProgramCache]: Analyzing trace with hash 351585609, now seen corresponding path program 1 times [2022-07-23 13:27:13,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:27:13,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759520478] [2022-07-23 13:27:13,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:13,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:27:13,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:13,635 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:13,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:27:13,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759520478] [2022-07-23 13:27:13,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759520478] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:27:13,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409008087] [2022-07-23 13:27:13,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:13,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:27:13,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:27:13,648 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:27:13,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-23 13:27:13,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:13,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 13:27:13,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:27:13,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:13,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:27:13,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:13,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409008087] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:27:13,785 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:27:13,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-07-23 13:27:13,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829404049] [2022-07-23 13:27:13,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:27:13,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-23 13:27:13,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:27:13,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-23 13:27:13,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-23 13:27:13,787 INFO L87 Difference]: Start difference. First operand 39 states and 51 transitions. Second operand has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:13,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:27:13,920 INFO L93 Difference]: Finished difference Result 113 states and 146 transitions. [2022-07-23 13:27:13,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-23 13:27:13,921 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-23 13:27:13,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:27:13,922 INFO L225 Difference]: With dead ends: 113 [2022-07-23 13:27:13,922 INFO L226 Difference]: Without dead ends: 112 [2022-07-23 13:27:13,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-07-23 13:27:13,923 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 112 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:27:13,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 50 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:27:13,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-07-23 13:27:13,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 74. [2022-07-23 13:27:13,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 70 states have (on average 1.457142857142857) internal successors, (102), 73 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:13,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 102 transitions. [2022-07-23 13:27:13,942 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 102 transitions. Word has length 9 [2022-07-23 13:27:13,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:27:13,942 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 102 transitions. [2022-07-23 13:27:13,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:13,943 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 102 transitions. [2022-07-23 13:27:13,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-23 13:27:13,943 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:27:13,943 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:27:13,971 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-23 13:27:14,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:27:14,158 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:27:14,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:27:14,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1985673441, now seen corresponding path program 1 times [2022-07-23 13:27:14,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:27:14,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122000539] [2022-07-23 13:27:14,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:14,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:27:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:14,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:14,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:27:14,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122000539] [2022-07-23 13:27:14,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122000539] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:27:14,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:27:14,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 13:27:14,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803236832] [2022-07-23 13:27:14,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:27:14,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 13:27:14,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:27:14,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 13:27:14,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-23 13:27:14,200 INFO L87 Difference]: Start difference. First operand 74 states and 102 transitions. Second operand has 5 states, 4 states have (on average 2.5) 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) [2022-07-23 13:27:14,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:27:14,270 INFO L93 Difference]: Finished difference Result 80 states and 108 transitions. [2022-07-23 13:27:14,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 13:27:14,273 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) 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 [2022-07-23 13:27:14,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:27:14,275 INFO L225 Difference]: With dead ends: 80 [2022-07-23 13:27:14,277 INFO L226 Difference]: Without dead ends: 79 [2022-07-23 13:27:14,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-23 13:27:14,278 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 14 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:27:14,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 32 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:27:14,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-07-23 13:27:14,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2022-07-23 13:27:14,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 71 states have (on average 1.4507042253521127) internal successors, (103), 74 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:14,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 103 transitions. [2022-07-23 13:27:14,287 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 103 transitions. Word has length 10 [2022-07-23 13:27:14,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:27:14,287 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 103 transitions. [2022-07-23 13:27:14,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) 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) [2022-07-23 13:27:14,288 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 103 transitions. [2022-07-23 13:27:14,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-23 13:27:14,288 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:27:14,288 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:27:14,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-23 13:27:14,289 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:27:14,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:27:14,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1493993400, now seen corresponding path program 1 times [2022-07-23 13:27:14,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:27:14,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715688214] [2022-07-23 13:27:14,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:14,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:27:14,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:14,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:14,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:27:14,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715688214] [2022-07-23 13:27:14,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715688214] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:27:14,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676701602] [2022-07-23 13:27:14,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:14,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:27:14,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:27:14,322 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:27:14,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-23 13:27:14,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:14,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 13:27:14,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:27:14,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:14,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:27:14,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:14,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676701602] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:27:14,484 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:27:14,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2022-07-23 13:27:14,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117434753] [2022-07-23 13:27:14,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:27:14,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-23 13:27:14,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:27:14,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-23 13:27:14,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-23 13:27:14,488 INFO L87 Difference]: Start difference. First operand 75 states and 103 transitions. Second operand has 11 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:14,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:27:14,658 INFO L93 Difference]: Finished difference Result 120 states and 160 transitions. [2022-07-23 13:27:14,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-23 13:27:14,659 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-23 13:27:14,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:27:14,661 INFO L225 Difference]: With dead ends: 120 [2022-07-23 13:27:14,662 INFO L226 Difference]: Without dead ends: 119 [2022-07-23 13:27:14,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2022-07-23 13:27:14,664 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 74 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:27:14,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 54 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:27:14,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-07-23 13:27:14,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 93. [2022-07-23 13:27:14,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 89 states have (on average 1.4719101123595506) internal successors, (131), 92 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) [2022-07-23 13:27:14,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 131 transitions. [2022-07-23 13:27:14,692 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 131 transitions. Word has length 11 [2022-07-23 13:27:14,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:27:14,693 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 131 transitions. [2022-07-23 13:27:14,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:14,693 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 131 transitions. [2022-07-23 13:27:14,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-23 13:27:14,694 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:27:14,694 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:27:14,713 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-23 13:27:14,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-07-23 13:27:14,907 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:27:14,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:27:14,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1493993350, now seen corresponding path program 1 times [2022-07-23 13:27:14,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:27:14,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899774582] [2022-07-23 13:27:14,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:14,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:27:14,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:14,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:14,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:27:14,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899774582] [2022-07-23 13:27:14,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899774582] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:27:14,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764874498] [2022-07-23 13:27:14,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:14,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:27:14,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:27:14,944 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:27:14,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-23 13:27:14,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:14,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 13:27:14,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:27:14,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:14,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:27:15,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:15,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764874498] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:27:15,021 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:27:15,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-07-23 13:27:15,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400777418] [2022-07-23 13:27:15,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:27:15,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-23 13:27:15,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:27:15,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-23 13:27:15,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-23 13:27:15,023 INFO L87 Difference]: Start difference. First operand 93 states and 131 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 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) [2022-07-23 13:27:15,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:27:15,097 INFO L93 Difference]: Finished difference Result 254 states and 355 transitions. [2022-07-23 13:27:15,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-23 13:27:15,097 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 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) Word has length 11 [2022-07-23 13:27:15,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:27:15,099 INFO L225 Difference]: With dead ends: 254 [2022-07-23 13:27:15,099 INFO L226 Difference]: Without dead ends: 253 [2022-07-23 13:27:15,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-07-23 13:27:15,100 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 98 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:27:15,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 87 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:27:15,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-07-23 13:27:15,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 227. [2022-07-23 13:27:15,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 223 states have (on average 1.4394618834080717) internal successors, (321), 226 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:15,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 321 transitions. [2022-07-23 13:27:15,116 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 321 transitions. Word has length 11 [2022-07-23 13:27:15,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:27:15,117 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 321 transitions. [2022-07-23 13:27:15,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 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) [2022-07-23 13:27:15,117 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 321 transitions. [2022-07-23 13:27:15,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-23 13:27:15,118 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:27:15,118 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:27:15,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-23 13:27:15,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:27:15,332 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:27:15,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:27:15,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1426334450, now seen corresponding path program 1 times [2022-07-23 13:27:15,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:27:15,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43032625] [2022-07-23 13:27:15,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:15,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:27:15,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:15,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:15,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:27:15,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43032625] [2022-07-23 13:27:15,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43032625] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:27:15,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:27:15,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 13:27:15,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065224369] [2022-07-23 13:27:15,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:27:15,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 13:27:15,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:27:15,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 13:27:15,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-23 13:27:15,371 INFO L87 Difference]: Start difference. First operand 227 states and 321 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:15,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:27:15,427 INFO L93 Difference]: Finished difference Result 231 states and 325 transitions. [2022-07-23 13:27:15,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 13:27:15,427 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-23 13:27:15,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:27:15,428 INFO L225 Difference]: With dead ends: 231 [2022-07-23 13:27:15,428 INFO L226 Difference]: Without dead ends: 228 [2022-07-23 13:27:15,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-23 13:27:15,429 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 18 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:27:15,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 33 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:27:15,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-07-23 13:27:15,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2022-07-23 13:27:15,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 224 states have (on average 1.4330357142857142) internal successors, (321), 227 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:15,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 321 transitions. [2022-07-23 13:27:15,443 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 321 transitions. Word has length 11 [2022-07-23 13:27:15,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:27:15,443 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 321 transitions. [2022-07-23 13:27:15,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:15,443 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 321 transitions. [2022-07-23 13:27:15,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-23 13:27:15,444 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:27:15,444 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:27:15,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-23 13:27:15,445 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:27:15,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:27:15,445 INFO L85 PathProgramCache]: Analyzing trace with hash 930844933, now seen corresponding path program 1 times [2022-07-23 13:27:15,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:27:15,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486972711] [2022-07-23 13:27:15,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:15,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:27:15,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:15,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:15,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:27:15,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486972711] [2022-07-23 13:27:15,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486972711] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:27:15,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836412580] [2022-07-23 13:27:15,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:15,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:27:15,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:27:15,473 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:27:15,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-23 13:27:15,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:15,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 13:27:15,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:27:15,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:15,584 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 13:27:15,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836412580] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:27:15,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-23 13:27:15,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2022-07-23 13:27:15,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951451179] [2022-07-23 13:27:15,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:27:15,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 13:27:15,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:27:15,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 13:27:15,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-23 13:27:15,586 INFO L87 Difference]: Start difference. First operand 228 states and 321 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:15,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:27:15,649 INFO L93 Difference]: Finished difference Result 256 states and 354 transitions. [2022-07-23 13:27:15,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 13:27:15,650 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-07-23 13:27:15,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:27:15,651 INFO L225 Difference]: With dead ends: 256 [2022-07-23 13:27:15,651 INFO L226 Difference]: Without dead ends: 253 [2022-07-23 13:27:15,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-07-23 13:27:15,652 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 21 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:27:15,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 33 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:27:15,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-07-23 13:27:15,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 242. [2022-07-23 13:27:15,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 238 states have (on average 1.415966386554622) internal successors, (337), 241 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:15,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 337 transitions. [2022-07-23 13:27:15,666 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 337 transitions. Word has length 12 [2022-07-23 13:27:15,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:27:15,666 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 337 transitions. [2022-07-23 13:27:15,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:15,666 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 337 transitions. [2022-07-23 13:27:15,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-23 13:27:15,667 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:27:15,667 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:27:15,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-23 13:27:15,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:27:15,883 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:27:15,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:27:15,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1922968006, now seen corresponding path program 1 times [2022-07-23 13:27:15,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:27:15,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724153872] [2022-07-23 13:27:15,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:15,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:27:15,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:15,941 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:15,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:27:15,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724153872] [2022-07-23 13:27:15,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724153872] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:27:15,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976944752] [2022-07-23 13:27:15,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:15,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:27:15,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:27:15,944 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:27:15,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:15,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-23 13:27:15,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-23 13:27:15,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:27:16,048 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:16,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:27:16,108 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:16,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976944752] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:27:16,109 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:27:16,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2022-07-23 13:27:16,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775193363] [2022-07-23 13:27:16,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:27:16,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-23 13:27:16,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:27:16,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-23 13:27:16,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-07-23 13:27:16,112 INFO L87 Difference]: Start difference. First operand 242 states and 337 transitions. Second operand has 17 states, 16 states have (on average 2.5) 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) [2022-07-23 13:27:16,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:27:16,207 INFO L93 Difference]: Finished difference Result 253 states and 348 transitions. [2022-07-23 13:27:16,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-23 13:27:16,208 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.5) 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 14 [2022-07-23 13:27:16,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:27:16,209 INFO L225 Difference]: With dead ends: 253 [2022-07-23 13:27:16,209 INFO L226 Difference]: Without dead ends: 250 [2022-07-23 13:27:16,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2022-07-23 13:27:16,210 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 54 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:27:16,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 55 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:27:16,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-07-23 13:27:16,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 242. [2022-07-23 13:27:16,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 238 states have (on average 1.4075630252100841) internal successors, (335), 241 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:16,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 335 transitions. [2022-07-23 13:27:16,222 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 335 transitions. Word has length 14 [2022-07-23 13:27:16,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:27:16,222 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 335 transitions. [2022-07-23 13:27:16,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.5) 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) [2022-07-23 13:27:16,223 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 335 transitions. [2022-07-23 13:27:16,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-23 13:27:16,224 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:27:16,224 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:27:16,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-23 13:27:16,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-23 13:27:16,447 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:27:16,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:27:16,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1772254812, now seen corresponding path program 1 times [2022-07-23 13:27:16,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:27:16,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870345412] [2022-07-23 13:27:16,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:16,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:27:16,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:16,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:16,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:27:16,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870345412] [2022-07-23 13:27:16,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870345412] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:27:16,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159911019] [2022-07-23 13:27:16,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:16,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:27:16,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:27:16,496 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:27:16,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-23 13:27:16,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:16,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-23 13:27:16,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:27:16,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:16,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:27:16,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:16,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159911019] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:27:16,662 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:27:16,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2022-07-23 13:27:16,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047838068] [2022-07-23 13:27:16,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:27:16,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-23 13:27:16,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:27:16,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-23 13:27:16,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-07-23 13:27:16,664 INFO L87 Difference]: Start difference. First operand 242 states and 335 transitions. Second operand has 17 states, 16 states have (on average 2.5) 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) [2022-07-23 13:27:16,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:27:16,953 INFO L93 Difference]: Finished difference Result 313 states and 426 transitions. [2022-07-23 13:27:16,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-23 13:27:16,954 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.5) 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 14 [2022-07-23 13:27:16,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:27:16,958 INFO L225 Difference]: With dead ends: 313 [2022-07-23 13:27:16,959 INFO L226 Difference]: Without dead ends: 311 [2022-07-23 13:27:16,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=216, Invalid=596, Unknown=0, NotChecked=0, Total=812 [2022-07-23 13:27:16,960 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 147 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:27:16,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 46 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:27:16,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-07-23 13:27:16,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 265. [2022-07-23 13:27:16,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 261 states have (on average 1.4099616858237547) internal successors, (368), 264 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:16,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 368 transitions. [2022-07-23 13:27:16,975 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 368 transitions. Word has length 14 [2022-07-23 13:27:16,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:27:16,976 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 368 transitions. [2022-07-23 13:27:16,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.5) 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) [2022-07-23 13:27:16,976 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 368 transitions. [2022-07-23 13:27:16,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-23 13:27:16,977 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:27:16,977 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:27:17,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-23 13:27:17,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:27:17,204 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:27:17,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:27:17,204 INFO L85 PathProgramCache]: Analyzing trace with hash 894675753, now seen corresponding path program 1 times [2022-07-23 13:27:17,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:27:17,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500801018] [2022-07-23 13:27:17,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:17,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:27:17,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:17,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:17,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:27:17,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500801018] [2022-07-23 13:27:17,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500801018] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:27:17,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657697076] [2022-07-23 13:27:17,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:17,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:27:17,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:27:17,250 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:27:17,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-23 13:27:17,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:17,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-23 13:27:17,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:27:17,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:17,367 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 13:27:17,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657697076] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:27:17,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-23 13:27:17,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2022-07-23 13:27:17,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813547976] [2022-07-23 13:27:17,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:27:17,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-23 13:27:17,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:27:17,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-23 13:27:17,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-07-23 13:27:17,369 INFO L87 Difference]: Start difference. First operand 265 states and 368 transitions. Second operand has 7 states, 6 states have (on average 2.5) 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) [2022-07-23 13:27:17,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:27:17,501 INFO L93 Difference]: Finished difference Result 430 states and 602 transitions. [2022-07-23 13:27:17,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-23 13:27:17,501 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) 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 [2022-07-23 13:27:17,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:27:17,503 INFO L225 Difference]: With dead ends: 430 [2022-07-23 13:27:17,503 INFO L226 Difference]: Without dead ends: 427 [2022-07-23 13:27:17,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-07-23 13:27:17,504 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 44 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:27:17,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 41 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:27:17,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2022-07-23 13:27:17,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 423. [2022-07-23 13:27:17,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 419 states have (on average 1.4128878281622912) internal successors, (592), 422 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:17,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 592 transitions. [2022-07-23 13:27:17,525 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 592 transitions. Word has length 15 [2022-07-23 13:27:17,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:27:17,525 INFO L495 AbstractCegarLoop]: Abstraction has 423 states and 592 transitions. [2022-07-23 13:27:17,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) 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) [2022-07-23 13:27:17,525 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 592 transitions. [2022-07-23 13:27:17,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-23 13:27:17,526 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:27:17,526 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:27:17,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-23 13:27:17,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:27:17,743 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:27:17,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:27:17,744 INFO L85 PathProgramCache]: Analyzing trace with hash -220195594, now seen corresponding path program 1 times [2022-07-23 13:27:17,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:27:17,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390631127] [2022-07-23 13:27:17,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:17,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:27:17,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:17,763 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:17,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:27:17,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390631127] [2022-07-23 13:27:17,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390631127] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:27:17,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:27:17,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 13:27:17,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490390142] [2022-07-23 13:27:17,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:27:17,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 13:27:17,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:27:17,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 13:27:17,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 13:27:17,764 INFO L87 Difference]: Start difference. First operand 423 states and 592 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:17,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:27:17,817 INFO L93 Difference]: Finished difference Result 710 states and 993 transitions. [2022-07-23 13:27:17,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 13:27:17,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-07-23 13:27:17,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:27:17,819 INFO L225 Difference]: With dead ends: 710 [2022-07-23 13:27:17,819 INFO L226 Difference]: Without dead ends: 386 [2022-07-23 13:27:17,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 13:27:17,823 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 4 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:27:17,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 29 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:27:17,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-07-23 13:27:17,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 292. [2022-07-23 13:27:17,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 289 states have (on average 1.356401384083045) internal successors, (392), 291 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:17,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 392 transitions. [2022-07-23 13:27:17,845 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 392 transitions. Word has length 18 [2022-07-23 13:27:17,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:27:17,845 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 392 transitions. [2022-07-23 13:27:17,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:17,845 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 392 transitions. [2022-07-23 13:27:17,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-23 13:27:17,846 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:27:17,846 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:27:17,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-23 13:27:17,847 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:27:17,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:27:17,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1129109338, now seen corresponding path program 1 times [2022-07-23 13:27:17,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:27:17,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772665380] [2022-07-23 13:27:17,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:17,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:27:17,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:17,927 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:17,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:27:17,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772665380] [2022-07-23 13:27:17,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772665380] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:27:17,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068968924] [2022-07-23 13:27:17,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:17,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:27:17,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:27:17,930 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:27:17,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-23 13:27:17,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:17,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-23 13:27:17,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:27:18,102 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:18,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:27:18,239 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:18,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068968924] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:27:18,240 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:27:18,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2022-07-23 13:27:18,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923651252] [2022-07-23 13:27:18,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:27:18,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-07-23 13:27:18,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:27:18,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-07-23 13:27:18,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=626, Unknown=0, NotChecked=0, Total=812 [2022-07-23 13:27:18,243 INFO L87 Difference]: Start difference. First operand 292 states and 392 transitions. Second operand has 29 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 29 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:18,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:27:18,726 INFO L93 Difference]: Finished difference Result 503 states and 661 transitions. [2022-07-23 13:27:18,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-23 13:27:18,726 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 29 states have internal predecessors, (64), 0 states have call successors, (0), 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 22 [2022-07-23 13:27:18,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:27:18,728 INFO L225 Difference]: With dead ends: 503 [2022-07-23 13:27:18,728 INFO L226 Difference]: Without dead ends: 494 [2022-07-23 13:27:18,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 809 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=626, Invalid=2130, Unknown=0, NotChecked=0, Total=2756 [2022-07-23 13:27:18,730 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 221 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 13:27:18,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 63 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 13:27:18,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2022-07-23 13:27:18,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 317. [2022-07-23 13:27:18,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 314 states have (on average 1.3821656050955413) internal successors, (434), 316 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:18,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 434 transitions. [2022-07-23 13:27:18,749 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 434 transitions. Word has length 22 [2022-07-23 13:27:18,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:27:18,749 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 434 transitions. [2022-07-23 13:27:18,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 29 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:18,750 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 434 transitions. [2022-07-23 13:27:18,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-23 13:27:18,750 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:27:18,750 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:27:18,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-23 13:27:18,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-23 13:27:18,972 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:27:18,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:27:18,972 INFO L85 PathProgramCache]: Analyzing trace with hash -198939945, now seen corresponding path program 2 times [2022-07-23 13:27:18,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:27:18,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385062863] [2022-07-23 13:27:18,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:18,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:27:18,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:19,037 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:19,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:27:19,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385062863] [2022-07-23 13:27:19,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385062863] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:27:19,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389746319] [2022-07-23 13:27:19,038 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 13:27:19,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:27:19,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:27:19,039 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:27:19,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-23 13:27:19,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-23 13:27:19,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:27:19,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-23 13:27:19,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:27:19,206 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:19,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:27:19,332 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:19,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389746319] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:27:19,333 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:27:19,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2022-07-23 13:27:19,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41899867] [2022-07-23 13:27:19,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:27:19,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-07-23 13:27:19,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:27:19,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-07-23 13:27:19,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812 [2022-07-23 13:27:19,334 INFO L87 Difference]: Start difference. First operand 317 states and 434 transitions. Second operand has 29 states, 28 states have (on average 2.392857142857143) internal successors, (67), 29 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:19,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:27:19,717 INFO L93 Difference]: Finished difference Result 423 states and 558 transitions. [2022-07-23 13:27:19,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-23 13:27:19,718 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.392857142857143) internal successors, (67), 29 states have internal predecessors, (67), 0 states have call successors, (0), 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 23 [2022-07-23 13:27:19,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:27:19,719 INFO L225 Difference]: With dead ends: 423 [2022-07-23 13:27:19,720 INFO L226 Difference]: Without dead ends: 415 [2022-07-23 13:27:19,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=651, Invalid=1605, Unknown=0, NotChecked=0, Total=2256 [2022-07-23 13:27:19,721 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 174 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:27:19,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 91 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:27:19,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-07-23 13:27:19,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 400. [2022-07-23 13:27:19,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 397 states have (on average 1.345088161209068) internal successors, (534), 399 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:19,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 534 transitions. [2022-07-23 13:27:19,748 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 534 transitions. Word has length 23 [2022-07-23 13:27:19,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:27:19,748 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 534 transitions. [2022-07-23 13:27:19,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.392857142857143) internal successors, (67), 29 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:19,748 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 534 transitions. [2022-07-23 13:27:19,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-23 13:27:19,749 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:27:19,749 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2022-07-23 13:27:19,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-23 13:27:19,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-23 13:27:19,972 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:27:19,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:27:19,972 INFO L85 PathProgramCache]: Analyzing trace with hash -198939895, now seen corresponding path program 2 times [2022-07-23 13:27:19,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:27:19,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54880094] [2022-07-23 13:27:19,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:19,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:27:19,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:20,055 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:20,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:27:20,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54880094] [2022-07-23 13:27:20,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54880094] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:27:20,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807911579] [2022-07-23 13:27:20,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 13:27:20,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:27:20,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:27:20,057 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:27:20,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-23 13:27:20,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-23 13:27:20,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:27:20,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-23 13:27:20,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:27:20,114 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-23 13:27:20,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:27:20,155 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-23 13:27:20,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807911579] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:27:20,155 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:27:20,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 13 [2022-07-23 13:27:20,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761574519] [2022-07-23 13:27:20,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:27:20,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-23 13:27:20,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:27:20,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-23 13:27:20,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-07-23 13:27:20,156 INFO L87 Difference]: Start difference. First operand 400 states and 534 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:20,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:27:20,327 INFO L93 Difference]: Finished difference Result 472 states and 624 transitions. [2022-07-23 13:27:20,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-23 13:27:20,327 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-07-23 13:27:20,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:27:20,329 INFO L225 Difference]: With dead ends: 472 [2022-07-23 13:27:20,329 INFO L226 Difference]: Without dead ends: 471 [2022-07-23 13:27:20,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=174, Invalid=426, Unknown=0, NotChecked=0, Total=600 [2022-07-23 13:27:20,330 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 157 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:27:20,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 119 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:27:20,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2022-07-23 13:27:20,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 254. [2022-07-23 13:27:20,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 252 states have (on average 1.3015873015873016) internal successors, (328), 253 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:20,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 328 transitions. [2022-07-23 13:27:20,356 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 328 transitions. Word has length 23 [2022-07-23 13:27:20,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:27:20,357 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 328 transitions. [2022-07-23 13:27:20,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:20,357 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 328 transitions. [2022-07-23 13:27:20,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-23 13:27:20,358 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:27:20,358 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:27:20,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-23 13:27:20,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:27:20,581 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:27:20,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:27:20,581 INFO L85 PathProgramCache]: Analyzing trace with hash 2131972659, now seen corresponding path program 2 times [2022-07-23 13:27:20,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:27:20,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542918306] [2022-07-23 13:27:20,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:20,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:27:20,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:20,667 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:20,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:27:20,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542918306] [2022-07-23 13:27:20,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542918306] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:27:20,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767221903] [2022-07-23 13:27:20,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 13:27:20,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:27:20,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:27:20,669 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:27:20,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-23 13:27:20,703 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-23 13:27:20,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:27:20,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-23 13:27:20,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:27:20,737 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-23 13:27:20,737 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 13:27:20,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767221903] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:27:20,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-23 13:27:20,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 16 [2022-07-23 13:27:20,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908076725] [2022-07-23 13:27:20,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:27:20,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 13:27:20,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:27:20,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 13:27:20,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-07-23 13:27:20,738 INFO L87 Difference]: Start difference. First operand 254 states and 328 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:20,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:27:20,815 INFO L93 Difference]: Finished difference Result 408 states and 519 transitions. [2022-07-23 13:27:20,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 13:27:20,815 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-07-23 13:27:20,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:27:20,816 INFO L225 Difference]: With dead ends: 408 [2022-07-23 13:27:20,816 INFO L226 Difference]: Without dead ends: 228 [2022-07-23 13:27:20,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2022-07-23 13:27:20,818 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 21 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:27:20,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 48 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:27:20,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-07-23 13:27:20,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 224. [2022-07-23 13:27:20,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 222 states have (on average 1.2252252252252251) internal successors, (272), 223 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:20,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 272 transitions. [2022-07-23 13:27:20,846 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 272 transitions. Word has length 26 [2022-07-23 13:27:20,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:27:20,847 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 272 transitions. [2022-07-23 13:27:20,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:20,847 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 272 transitions. [2022-07-23 13:27:20,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-23 13:27:20,847 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:27:20,847 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:27:20,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-23 13:27:21,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:27:21,070 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:27:21,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:27:21,071 INFO L85 PathProgramCache]: Analyzing trace with hash 173293468, now seen corresponding path program 1 times [2022-07-23 13:27:21,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:27:21,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39622034] [2022-07-23 13:27:21,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:21,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:27:21,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:21,205 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:21,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:27:21,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39622034] [2022-07-23 13:27:21,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39622034] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:27:21,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380713018] [2022-07-23 13:27:21,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:21,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:27:21,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:27:21,207 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:27:21,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-23 13:27:21,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:21,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-23 13:27:21,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:27:21,432 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:21,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:27:21,573 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:21,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380713018] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:27:21,574 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:27:21,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2022-07-23 13:27:21,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984699099] [2022-07-23 13:27:21,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:27:21,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-07-23 13:27:21,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:27:21,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-07-23 13:27:21,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=922, Unknown=0, NotChecked=0, Total=1190 [2022-07-23 13:27:21,575 INFO L87 Difference]: Start difference. First operand 224 states and 272 transitions. Second operand has 35 states, 34 states have (on average 2.323529411764706) internal successors, (79), 35 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:22,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:27:22,032 INFO L93 Difference]: Finished difference Result 325 states and 391 transitions. [2022-07-23 13:27:22,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-23 13:27:22,033 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.323529411764706) internal successors, (79), 35 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-07-23 13:27:22,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:27:22,035 INFO L225 Difference]: With dead ends: 325 [2022-07-23 13:27:22,035 INFO L226 Difference]: Without dead ends: 319 [2022-07-23 13:27:22,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 931 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=799, Invalid=2281, Unknown=0, NotChecked=0, Total=3080 [2022-07-23 13:27:22,037 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 261 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 13:27:22,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 82 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 13:27:22,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-07-23 13:27:22,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 270. [2022-07-23 13:27:22,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 268 states have (on average 1.205223880597015) internal successors, (323), 269 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:22,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 323 transitions. [2022-07-23 13:27:22,071 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 323 transitions. Word has length 27 [2022-07-23 13:27:22,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:27:22,071 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 323 transitions. [2022-07-23 13:27:22,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.323529411764706) internal successors, (79), 35 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:22,072 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 323 transitions. [2022-07-23 13:27:22,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-23 13:27:22,072 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:27:22,072 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:27:22,095 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-07-23 13:27:22,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-07-23 13:27:22,292 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:27:22,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:27:22,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1060574047, now seen corresponding path program 1 times [2022-07-23 13:27:22,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:27:22,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516116600] [2022-07-23 13:27:22,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:22,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:27:22,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:22,360 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:22,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:27:22,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516116600] [2022-07-23 13:27:22,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516116600] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:27:22,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658499906] [2022-07-23 13:27:22,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:22,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:27:22,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:27:22,364 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:27:22,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-23 13:27:22,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:22,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-23 13:27:22,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:27:22,429 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:22,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:27:22,559 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:22,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658499906] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:27:22,560 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:27:22,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2022-07-23 13:27:22,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721092641] [2022-07-23 13:27:22,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:27:22,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-23 13:27:22,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:27:22,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-23 13:27:22,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-07-23 13:27:22,562 INFO L87 Difference]: Start difference. First operand 270 states and 323 transitions. Second operand has 22 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 22 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:22,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:27:22,819 INFO L93 Difference]: Finished difference Result 564 states and 711 transitions. [2022-07-23 13:27:22,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-23 13:27:22,820 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 22 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-07-23 13:27:22,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:27:22,822 INFO L225 Difference]: With dead ends: 564 [2022-07-23 13:27:22,822 INFO L226 Difference]: Without dead ends: 563 [2022-07-23 13:27:22,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=306, Invalid=686, Unknown=0, NotChecked=0, Total=992 [2022-07-23 13:27:22,823 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 241 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:27:22,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 95 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:27:22,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2022-07-23 13:27:22,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 337. [2022-07-23 13:27:22,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 335 states have (on average 1.2447761194029852) internal successors, (417), 336 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:22,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 417 transitions. [2022-07-23 13:27:22,866 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 417 transitions. Word has length 27 [2022-07-23 13:27:22,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:27:22,867 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 417 transitions. [2022-07-23 13:27:22,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 22 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:22,867 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 417 transitions. [2022-07-23 13:27:22,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-23 13:27:22,868 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:27:22,868 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-07-23 13:27:22,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-23 13:27:23,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-07-23 13:27:23,079 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:27:23,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:27:23,080 INFO L85 PathProgramCache]: Analyzing trace with hash -617200904, now seen corresponding path program 1 times [2022-07-23 13:27:23,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:27:23,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269827346] [2022-07-23 13:27:23,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:23,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:27:23,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:23,190 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:23,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:27:23,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269827346] [2022-07-23 13:27:23,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269827346] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:27:23,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23315045] [2022-07-23 13:27:23,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:23,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:27:23,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:27:23,193 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) [2022-07-23 13:27:23,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-23 13:27:23,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:23,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-23 13:27:23,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:27:23,448 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:23,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:27:23,650 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:23,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23315045] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:27:23,650 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:27:23,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 40 [2022-07-23 13:27:23,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370875350] [2022-07-23 13:27:23,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:27:23,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-07-23 13:27:23,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:27:23,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-07-23 13:27:23,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=334, Invalid=1306, Unknown=0, NotChecked=0, Total=1640 [2022-07-23 13:27:23,652 INFO L87 Difference]: Start difference. First operand 337 states and 417 transitions. Second operand has 41 states, 40 states have (on average 2.35) internal successors, (94), 41 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:24,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:27:24,459 INFO L93 Difference]: Finished difference Result 660 states and 822 transitions. [2022-07-23 13:27:24,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-07-23 13:27:24,460 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.35) internal successors, (94), 41 states have internal predecessors, (94), 0 states have call successors, (0), 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 32 [2022-07-23 13:27:24,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:27:24,462 INFO L225 Difference]: With dead ends: 660 [2022-07-23 13:27:24,462 INFO L226 Difference]: Without dead ends: 649 [2022-07-23 13:27:24,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2110 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1394, Invalid=5086, Unknown=0, NotChecked=0, Total=6480 [2022-07-23 13:27:24,464 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 349 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 13:27:24,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 92 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 13:27:24,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2022-07-23 13:27:24,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 429. [2022-07-23 13:27:24,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 427 states have (on average 1.2505854800936769) internal successors, (534), 428 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:24,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 534 transitions. [2022-07-23 13:27:24,523 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 534 transitions. Word has length 32 [2022-07-23 13:27:24,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:27:24,524 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 534 transitions. [2022-07-23 13:27:24,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.35) internal successors, (94), 41 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:24,524 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 534 transitions. [2022-07-23 13:27:24,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-23 13:27:24,525 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:27:24,525 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2022-07-23 13:27:24,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-23 13:27:24,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:27:24,740 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:27:24,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:27:24,740 INFO L85 PathProgramCache]: Analyzing trace with hash 819223618, now seen corresponding path program 2 times [2022-07-23 13:27:24,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:27:24,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410540569] [2022-07-23 13:27:24,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:24,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:27:24,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:24,911 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:24,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:27:24,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410540569] [2022-07-23 13:27:24,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410540569] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:27:24,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782373036] [2022-07-23 13:27:24,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 13:27:24,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:27:24,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:27:24,913 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) [2022-07-23 13:27:24,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-23 13:27:24,964 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-23 13:27:24,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:27:24,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-23 13:27:24,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:27:25,273 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:25,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:27:25,562 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:25,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782373036] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:27:25,563 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:27:25,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 52 [2022-07-23 13:27:25,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984110655] [2022-07-23 13:27:25,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:27:25,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-07-23 13:27:25,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:27:25,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-07-23 13:27:25,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=546, Invalid=2210, Unknown=0, NotChecked=0, Total=2756 [2022-07-23 13:27:25,565 INFO L87 Difference]: Start difference. First operand 429 states and 534 transitions. Second operand has 53 states, 52 states have (on average 2.3846153846153846) internal successors, (124), 53 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:26,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:27:26,784 INFO L93 Difference]: Finished difference Result 993 states and 1260 transitions. [2022-07-23 13:27:26,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-07-23 13:27:26,785 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 2.3846153846153846) internal successors, (124), 53 states have internal predecessors, (124), 0 states have call successors, (0), 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 42 [2022-07-23 13:27:26,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:27:26,788 INFO L225 Difference]: With dead ends: 993 [2022-07-23 13:27:26,788 INFO L226 Difference]: Without dead ends: 981 [2022-07-23 13:27:26,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3643 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2275, Invalid=8437, Unknown=0, NotChecked=0, Total=10712 [2022-07-23 13:27:26,792 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 650 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 13:27:26,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [650 Valid, 92 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-23 13:27:26,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2022-07-23 13:27:26,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 561. [2022-07-23 13:27:26,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 559 states have (on average 1.2826475849731664) internal successors, (717), 560 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:26,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 717 transitions. [2022-07-23 13:27:26,865 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 717 transitions. Word has length 42 [2022-07-23 13:27:26,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:27:26,865 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 717 transitions. [2022-07-23 13:27:26,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 2.3846153846153846) internal successors, (124), 53 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:26,865 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 717 transitions. [2022-07-23 13:27:26,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-23 13:27:26,866 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:27:26,867 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:27:26,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-23 13:27:27,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:27:27,079 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:27:27,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:27:27,080 INFO L85 PathProgramCache]: Analyzing trace with hash 155546162, now seen corresponding path program 1 times [2022-07-23 13:27:27,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:27:27,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585060124] [2022-07-23 13:27:27,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:27,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:27:27,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:27,251 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:27,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:27:27,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585060124] [2022-07-23 13:27:27,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585060124] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:27:27,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009158323] [2022-07-23 13:27:27,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:27,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:27:27,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:27:27,252 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) [2022-07-23 13:27:27,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-23 13:27:27,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:27,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-23 13:27:27,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:27:27,626 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:27,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:27:27,958 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:27,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009158323] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:27:27,959 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:27:27,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 58 [2022-07-23 13:27:27,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830806463] [2022-07-23 13:27:27,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:27:27,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-07-23 13:27:27,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:27:27,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-07-23 13:27:27,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=676, Invalid=2746, Unknown=0, NotChecked=0, Total=3422 [2022-07-23 13:27:27,961 INFO L87 Difference]: Start difference. First operand 561 states and 717 transitions. Second operand has 59 states, 58 states have (on average 2.293103448275862) internal successors, (133), 59 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:29,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:27:29,288 INFO L93 Difference]: Finished difference Result 1452 states and 1822 transitions. [2022-07-23 13:27:29,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-07-23 13:27:29,288 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 2.293103448275862) internal successors, (133), 59 states have internal predecessors, (133), 0 states have call successors, (0), 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 [2022-07-23 13:27:29,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:27:29,295 INFO L225 Difference]: With dead ends: 1452 [2022-07-23 13:27:29,295 INFO L226 Difference]: Without dead ends: 1439 [2022-07-23 13:27:29,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4684 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2978, Invalid=10828, Unknown=0, NotChecked=0, Total=13806 [2022-07-23 13:27:29,299 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 685 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 13:27:29,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [685 Valid, 107 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-23 13:27:29,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1439 states. [2022-07-23 13:27:29,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1439 to 1002. [2022-07-23 13:27:29,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1002 states, 1000 states have (on average 1.284) internal successors, (1284), 1001 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:29,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1284 transitions. [2022-07-23 13:27:29,451 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1284 transitions. Word has length 45 [2022-07-23 13:27:29,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:27:29,451 INFO L495 AbstractCegarLoop]: Abstraction has 1002 states and 1284 transitions. [2022-07-23 13:27:29,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 2.293103448275862) internal successors, (133), 59 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:29,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1284 transitions. [2022-07-23 13:27:29,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-23 13:27:29,453 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:27:29,453 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2022-07-23 13:27:29,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-23 13:27:29,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-07-23 13:27:29,667 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:27:29,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:27:29,668 INFO L85 PathProgramCache]: Analyzing trace with hash 40208802, now seen corresponding path program 3 times [2022-07-23 13:27:29,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:27:29,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148995352] [2022-07-23 13:27:29,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:29,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:27:29,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:29,889 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:29,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:27:29,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148995352] [2022-07-23 13:27:29,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148995352] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:27:29,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949796265] [2022-07-23 13:27:29,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-23 13:27:29,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:27:29,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:27:29,890 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) [2022-07-23 13:27:29,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-23 13:27:29,914 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-23 13:27:29,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:27:29,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-23 13:27:29,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:27:29,938 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-23 13:27:29,938 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 13:27:29,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949796265] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:27:29,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-23 13:27:29,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [22] total 24 [2022-07-23 13:27:29,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587087372] [2022-07-23 13:27:29,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:27:29,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 13:27:29,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:27:29,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 13:27:29,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2022-07-23 13:27:29,940 INFO L87 Difference]: Start difference. First operand 1002 states and 1284 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:30,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:27:30,046 INFO L93 Difference]: Finished difference Result 1290 states and 1648 transitions. [2022-07-23 13:27:30,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 13:27:30,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2022-07-23 13:27:30,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:27:30,055 INFO L225 Difference]: With dead ends: 1290 [2022-07-23 13:27:30,055 INFO L226 Difference]: Without dead ends: 637 [2022-07-23 13:27:30,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2022-07-23 13:27:30,057 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 8 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:27:30,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 25 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:27:30,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2022-07-23 13:27:30,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 533. [2022-07-23 13:27:30,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 531 states have (on average 1.2090395480225988) internal successors, (642), 532 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:30,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 642 transitions. [2022-07-23 13:27:30,146 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 642 transitions. Word has length 50 [2022-07-23 13:27:30,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:27:30,146 INFO L495 AbstractCegarLoop]: Abstraction has 533 states and 642 transitions. [2022-07-23 13:27:30,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:30,146 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 642 transitions. [2022-07-23 13:27:30,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-23 13:27:30,147 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:27:30,147 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-07-23 13:27:30,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-23 13:27:30,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-07-23 13:27:30,363 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:27:30,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:27:30,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1442158919, now seen corresponding path program 2 times [2022-07-23 13:27:30,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:27:30,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781364242] [2022-07-23 13:27:30,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:30,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:27:30,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:30,560 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:30,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:27:30,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781364242] [2022-07-23 13:27:30,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781364242] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:27:30,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595438547] [2022-07-23 13:27:30,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 13:27:30,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:27:30,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:27:30,561 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) [2022-07-23 13:27:30,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-23 13:27:30,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-23 13:27:30,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:27:30,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-23 13:27:30,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:27:30,952 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:30,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:27:31,376 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:31,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595438547] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:27:31,377 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:27:31,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 64 [2022-07-23 13:27:31,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198773737] [2022-07-23 13:27:31,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:27:31,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-07-23 13:27:31,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:27:31,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-07-23 13:27:31,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=3338, Unknown=0, NotChecked=0, Total=4160 [2022-07-23 13:27:31,379 INFO L87 Difference]: Start difference. First operand 533 states and 642 transitions. Second operand has 65 states, 64 states have (on average 2.359375) internal successors, (151), 65 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) [2022-07-23 13:27:32,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:27:32,952 INFO L93 Difference]: Finished difference Result 1505 states and 1828 transitions. [2022-07-23 13:27:32,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-07-23 13:27:32,955 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 64 states have (on average 2.359375) internal successors, (151), 65 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) Word has length 51 [2022-07-23 13:27:32,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:27:32,959 INFO L225 Difference]: With dead ends: 1505 [2022-07-23 13:27:32,959 INFO L226 Difference]: Without dead ends: 1489 [2022-07-23 13:27:32,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5788 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3331, Invalid=12925, Unknown=0, NotChecked=0, Total=16256 [2022-07-23 13:27:32,961 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 634 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 13:27:32,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [634 Valid, 100 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-23 13:27:32,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2022-07-23 13:27:33,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 724. [2022-07-23 13:27:33,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 722 states have (on average 1.2437673130193905) internal successors, (898), 723 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:33,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 898 transitions. [2022-07-23 13:27:33,079 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 898 transitions. Word has length 51 [2022-07-23 13:27:33,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:27:33,080 INFO L495 AbstractCegarLoop]: Abstraction has 724 states and 898 transitions. [2022-07-23 13:27:33,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 64 states have (on average 2.359375) internal successors, (151), 65 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) [2022-07-23 13:27:33,080 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 898 transitions. [2022-07-23 13:27:33,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-23 13:27:33,081 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:27:33,081 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:27:33,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-23 13:27:33,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-07-23 13:27:33,306 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:27:33,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:27:33,306 INFO L85 PathProgramCache]: Analyzing trace with hash -2011601919, now seen corresponding path program 3 times [2022-07-23 13:27:33,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:27:33,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825090951] [2022-07-23 13:27:33,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:33,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:27:33,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:33,588 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:33,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:27:33,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825090951] [2022-07-23 13:27:33,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825090951] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:27:33,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670312919] [2022-07-23 13:27:33,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-23 13:27:33,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:27:33,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:27:33,590 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) [2022-07-23 13:27:33,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-23 13:27:33,616 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-23 13:27:33,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:27:33,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-23 13:27:33,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:27:33,837 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 20 proven. 58 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-23 13:27:33,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:27:34,333 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-23 13:27:34,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670312919] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:27:34,333 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:27:34,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 13, 13] total 50 [2022-07-23 13:27:34,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395541442] [2022-07-23 13:27:34,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:27:34,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-07-23 13:27:34,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:27:34,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-07-23 13:27:34,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=2161, Unknown=0, NotChecked=0, Total=2450 [2022-07-23 13:27:34,335 INFO L87 Difference]: Start difference. First operand 724 states and 898 transitions. Second operand has 50 states, 50 states have (on average 2.54) internal successors, (127), 50 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:37,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:27:37,765 INFO L93 Difference]: Finished difference Result 1693 states and 2036 transitions. [2022-07-23 13:27:37,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2022-07-23 13:27:37,765 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.54) internal successors, (127), 50 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-07-23 13:27:37,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:27:37,767 INFO L225 Difference]: With dead ends: 1693 [2022-07-23 13:27:37,768 INFO L226 Difference]: Without dead ends: 1037 [2022-07-23 13:27:37,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8000 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2759, Invalid=24301, Unknown=0, NotChecked=0, Total=27060 [2022-07-23 13:27:37,770 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 989 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 1762 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 1968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-23 13:27:37,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [989 Valid, 369 Invalid, 1968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1762 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-23 13:27:37,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2022-07-23 13:27:37,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 592. [2022-07-23 13:27:37,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 590 states have (on average 1.2169491525423728) internal successors, (718), 591 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:37,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 718 transitions. [2022-07-23 13:27:37,893 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 718 transitions. Word has length 57 [2022-07-23 13:27:37,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:27:37,893 INFO L495 AbstractCegarLoop]: Abstraction has 592 states and 718 transitions. [2022-07-23 13:27:37,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.54) internal successors, (127), 50 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:37,893 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 718 transitions. [2022-07-23 13:27:37,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-23 13:27:37,894 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:27:37,894 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 5, 5, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2022-07-23 13:27:37,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-23 13:27:38,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:27:38,115 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:27:38,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:27:38,116 INFO L85 PathProgramCache]: Analyzing trace with hash 2012170120, now seen corresponding path program 4 times [2022-07-23 13:27:38,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:27:38,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059067353] [2022-07-23 13:27:38,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:38,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:27:38,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:38,443 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:38,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:27:38,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059067353] [2022-07-23 13:27:38,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059067353] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:27:38,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088592843] [2022-07-23 13:27:38,444 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-23 13:27:38,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:27:38,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:27:38,445 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) [2022-07-23 13:27:38,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-23 13:27:38,479 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-23 13:27:38,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:27:38,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 29 conjunts are in the unsatisfiable core [2022-07-23 13:27:38,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:27:39,041 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:39,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:27:39,682 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:39,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088592843] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:27:39,682 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:27:39,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 82 [2022-07-23 13:27:39,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420069469] [2022-07-23 13:27:39,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:27:39,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-07-23 13:27:39,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:27:39,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-07-23 13:27:39,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1276, Invalid=5530, Unknown=0, NotChecked=0, Total=6806 [2022-07-23 13:27:39,685 INFO L87 Difference]: Start difference. First operand 592 states and 718 transitions. Second operand has 83 states, 82 states have (on average 2.2804878048780486) internal successors, (187), 83 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:41,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:27:41,320 INFO L93 Difference]: Finished difference Result 1429 states and 1676 transitions. [2022-07-23 13:27:41,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-07-23 13:27:41,320 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 82 states have (on average 2.2804878048780486) internal successors, (187), 83 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-07-23 13:27:41,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:27:41,323 INFO L225 Difference]: With dead ends: 1429 [2022-07-23 13:27:41,323 INFO L226 Difference]: Without dead ends: 1417 [2022-07-23 13:27:41,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7788 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=4696, Invalid=16766, Unknown=0, NotChecked=0, Total=21462 [2022-07-23 13:27:41,325 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 785 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 13:27:41,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 137 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-23 13:27:41,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1417 states. [2022-07-23 13:27:41,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1417 to 880. [2022-07-23 13:27:41,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 878 states have (on average 1.2232346241457859) internal successors, (1074), 879 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:41,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1074 transitions. [2022-07-23 13:27:41,517 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1074 transitions. Word has length 63 [2022-07-23 13:27:41,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:27:41,517 INFO L495 AbstractCegarLoop]: Abstraction has 880 states and 1074 transitions. [2022-07-23 13:27:41,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 82 states have (on average 2.2804878048780486) internal successors, (187), 83 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:41,517 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1074 transitions. [2022-07-23 13:27:41,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-23 13:27:41,519 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:27:41,519 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 6, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1] [2022-07-23 13:27:41,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-07-23 13:27:41,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-07-23 13:27:41,741 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:27:41,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:27:41,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1937639662, now seen corresponding path program 2 times [2022-07-23 13:27:41,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:27:41,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362424717] [2022-07-23 13:27:41,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:41,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:27:41,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:41,946 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:41,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:27:41,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362424717] [2022-07-23 13:27:41,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362424717] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:27:41,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159229522] [2022-07-23 13:27:41,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 13:27:41,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:27:41,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:27:41,949 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) [2022-07-23 13:27:41,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-23 13:27:41,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-23 13:27:41,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:27:41,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-23 13:27:41,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:27:42,053 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2022-07-23 13:27:42,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:27:42,133 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2022-07-23 13:27:42,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159229522] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:27:42,134 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:27:42,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 3, 3] total 25 [2022-07-23 13:27:42,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904193137] [2022-07-23 13:27:42,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:27:42,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-23 13:27:42,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:27:42,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-23 13:27:42,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2022-07-23 13:27:42,135 INFO L87 Difference]: Start difference. First operand 880 states and 1074 transitions. Second operand has 26 states, 25 states have (on average 3.32) internal successors, (83), 26 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:42,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:27:42,815 INFO L93 Difference]: Finished difference Result 1693 states and 1985 transitions. [2022-07-23 13:27:42,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-23 13:27:42,815 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.32) internal successors, (83), 26 states have internal predecessors, (83), 0 states have call successors, (0), 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 69 [2022-07-23 13:27:42,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:27:42,819 INFO L225 Difference]: With dead ends: 1693 [2022-07-23 13:27:42,819 INFO L226 Difference]: Without dead ends: 1692 [2022-07-23 13:27:42,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=636, Invalid=1716, Unknown=0, NotChecked=0, Total=2352 [2022-07-23 13:27:42,820 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 189 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:27:42,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 143 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:27:42,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1692 states. [2022-07-23 13:27:42,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1692 to 712. [2022-07-23 13:27:42,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 711 states have (on average 1.20112517580872) internal successors, (854), 711 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:42,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 854 transitions. [2022-07-23 13:27:42,981 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 854 transitions. Word has length 69 [2022-07-23 13:27:42,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:27:42,982 INFO L495 AbstractCegarLoop]: Abstraction has 712 states and 854 transitions. [2022-07-23 13:27:42,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.32) internal successors, (83), 26 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:42,982 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 854 transitions. [2022-07-23 13:27:42,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-23 13:27:42,985 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:27:42,985 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1] [2022-07-23 13:27:43,003 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-07-23 13:27:43,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:27:43,193 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:27:43,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:27:43,193 INFO L85 PathProgramCache]: Analyzing trace with hash 448781649, now seen corresponding path program 1 times [2022-07-23 13:27:43,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:27:43,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195237495] [2022-07-23 13:27:43,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:43,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:27:43,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:43,559 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 268 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:43,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:27:43,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195237495] [2022-07-23 13:27:43,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195237495] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:27:43,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827999154] [2022-07-23 13:27:43,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:43,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:27:43,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:27:43,562 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) [2022-07-23 13:27:43,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-23 13:27:43,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:43,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 33 conjunts are in the unsatisfiable core [2022-07-23 13:27:43,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:27:44,271 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 268 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:44,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:27:45,021 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 268 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:45,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827999154] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:27:45,021 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:27:45,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 94 [2022-07-23 13:27:45,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75035287] [2022-07-23 13:27:45,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:27:45,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2022-07-23 13:27:45,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:27:45,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2022-07-23 13:27:45,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1728, Invalid=7202, Unknown=0, NotChecked=0, Total=8930 [2022-07-23 13:27:45,024 INFO L87 Difference]: Start difference. First operand 712 states and 854 transitions. Second operand has 95 states, 94 states have (on average 2.3404255319148937) internal successors, (220), 95 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:47,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:27:47,487 INFO L93 Difference]: Finished difference Result 1908 states and 2281 transitions. [2022-07-23 13:27:47,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-07-23 13:27:47,488 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 94 states have (on average 2.3404255319148937) internal successors, (220), 95 states have internal predecessors, (220), 0 states have call successors, (0), 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 74 [2022-07-23 13:27:47,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:27:47,492 INFO L225 Difference]: With dead ends: 1908 [2022-07-23 13:27:47,492 INFO L226 Difference]: Without dead ends: 1879 [2022-07-23 13:27:47,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11834 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=6339, Invalid=25523, Unknown=0, NotChecked=0, Total=31862 [2022-07-23 13:27:47,494 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 904 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-23 13:27:47,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [904 Valid, 149 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-23 13:27:47,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879 states. [2022-07-23 13:27:47,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879 to 757. [2022-07-23 13:27:47,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 757 states, 756 states have (on average 1.2103174603174602) internal successors, (915), 756 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:47,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 915 transitions. [2022-07-23 13:27:47,695 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 915 transitions. Word has length 74 [2022-07-23 13:27:47,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:27:47,695 INFO L495 AbstractCegarLoop]: Abstraction has 757 states and 915 transitions. [2022-07-23 13:27:47,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 94 states have (on average 2.3404255319148937) internal successors, (220), 95 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:47,695 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 915 transitions. [2022-07-23 13:27:47,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-23 13:27:47,697 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:27:47,697 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 8, 6, 6, 6, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1] [2022-07-23 13:27:47,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-07-23 13:27:47,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:27:47,919 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:27:47,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:27:47,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1955030167, now seen corresponding path program 5 times [2022-07-23 13:27:47,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:27:47,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912896495] [2022-07-23 13:27:47,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:47,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:27:47,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:48,323 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 0 proven. 316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:48,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:27:48,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912896495] [2022-07-23 13:27:48,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912896495] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:27:48,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059506852] [2022-07-23 13:27:48,324 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-23 13:27:48,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:27:48,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:27:48,325 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) [2022-07-23 13:27:48,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-07-23 13:27:48,357 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-07-23 13:27:48,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:27:48,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-23 13:27:48,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:27:48,466 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 181 proven. 5 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-23 13:27:48,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:27:48,500 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 181 proven. 5 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-23 13:27:48,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059506852] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:27:48,501 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:27:48,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 6, 6] total 41 [2022-07-23 13:27:48,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021619278] [2022-07-23 13:27:48,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:27:48,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-07-23 13:27:48,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:27:48,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-07-23 13:27:48,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=1338, Unknown=0, NotChecked=0, Total=1640 [2022-07-23 13:27:48,503 INFO L87 Difference]: Start difference. First operand 757 states and 915 transitions. Second operand has 41 states, 41 states have (on average 2.975609756097561) internal successors, (122), 41 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:50,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:27:50,098 INFO L93 Difference]: Finished difference Result 1043 states and 1229 transitions. [2022-07-23 13:27:50,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-07-23 13:27:50,099 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.975609756097561) internal successors, (122), 41 states have internal predecessors, (122), 0 states have call successors, (0), 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 82 [2022-07-23 13:27:50,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:27:50,100 INFO L225 Difference]: With dead ends: 1043 [2022-07-23 13:27:50,100 INFO L226 Difference]: Without dead ends: 463 [2022-07-23 13:27:50,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2787 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1976, Invalid=9154, Unknown=0, NotChecked=0, Total=11130 [2022-07-23 13:27:50,101 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 430 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 13:27:50,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 122 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-23 13:27:50,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-07-23 13:27:50,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 322. [2022-07-23 13:27:50,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 321 states have (on average 1.0591900311526479) internal successors, (340), 321 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:50,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 340 transitions. [2022-07-23 13:27:50,191 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 340 transitions. Word has length 82 [2022-07-23 13:27:50,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:27:50,191 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 340 transitions. [2022-07-23 13:27:50,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.975609756097561) internal successors, (122), 41 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:50,191 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 340 transitions. [2022-07-23 13:27:50,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-23 13:27:50,192 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:27:50,192 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:27:50,210 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-07-23 13:27:50,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:27:50,401 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:27:50,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:27:50,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1088474210, now seen corresponding path program 2 times [2022-07-23 13:27:50,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:27:50,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142046837] [2022-07-23 13:27:50,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:50,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:27:50,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:50,998 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 0 proven. 631 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:50,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:27:50,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142046837] [2022-07-23 13:27:50,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142046837] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:27:50,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718590398] [2022-07-23 13:27:50,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 13:27:50,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:27:50,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:27:51,000 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) [2022-07-23 13:27:51,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-07-23 13:27:51,040 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-23 13:27:51,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:27:51,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 41 conjunts are in the unsatisfiable core [2022-07-23 13:27:51,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:27:51,895 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 0 proven. 631 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:51,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:27:53,040 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 0 proven. 631 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:53,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718590398] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:27:53,040 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:27:53,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 118 [2022-07-23 13:27:53,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313424046] [2022-07-23 13:27:53,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:27:53,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2022-07-23 13:27:53,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:27:53,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2022-07-23 13:27:53,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3096, Invalid=10946, Unknown=0, NotChecked=0, Total=14042 [2022-07-23 13:27:53,043 INFO L87 Difference]: Start difference. First operand 322 states and 340 transitions. Second operand has 119 states, 118 states have (on average 2.093220338983051) internal successors, (247), 119 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:55,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:27:55,323 INFO L93 Difference]: Finished difference Result 850 states and 906 transitions. [2022-07-23 13:27:55,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-07-23 13:27:55,324 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 118 states have (on average 2.093220338983051) internal successors, (247), 119 states have internal predecessors, (247), 0 states have call successors, (0), 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 83 [2022-07-23 13:27:55,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:27:55,325 INFO L225 Difference]: With dead ends: 850 [2022-07-23 13:27:55,326 INFO L226 Difference]: Without dead ends: 828 [2022-07-23 13:27:55,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14213 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=9752, Invalid=28468, Unknown=0, NotChecked=0, Total=38220 [2022-07-23 13:27:55,328 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 988 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 988 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-23 13:27:55,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [988 Valid, 174 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-23 13:27:55,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2022-07-23 13:27:55,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 538. [2022-07-23 13:27:55,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 537 states have (on average 1.0353817504655494) internal successors, (556), 537 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:55,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 556 transitions. [2022-07-23 13:27:55,527 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 556 transitions. Word has length 83 [2022-07-23 13:27:55,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:27:55,528 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 556 transitions. [2022-07-23 13:27:55,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 118 states have (on average 2.093220338983051) internal successors, (247), 119 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:27:55,528 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 556 transitions. [2022-07-23 13:27:55,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-23 13:27:55,528 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:27:55,529 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 8, 7, 7, 7, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1] [2022-07-23 13:27:55,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-07-23 13:27:55,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:27:55,729 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:27:55,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:27:55,729 INFO L85 PathProgramCache]: Analyzing trace with hash -319776093, now seen corresponding path program 6 times [2022-07-23 13:27:55,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:27:55,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587514615] [2022-07-23 13:27:55,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:27:55,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:27:55,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:27:56,184 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 334 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:56,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:27:56,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587514615] [2022-07-23 13:27:56,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587514615] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:27:56,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139511637] [2022-07-23 13:27:56,184 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-23 13:27:56,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:27:56,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:27:56,186 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) [2022-07-23 13:27:56,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-07-23 13:27:56,228 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2022-07-23 13:27:56,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:27:56,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 39 conjunts are in the unsatisfiable core [2022-07-23 13:27:56,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:27:57,056 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 334 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:57,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:27:58,003 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 334 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:27:58,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139511637] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:27:58,003 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:27:58,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 112 [2022-07-23 13:27:58,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215017943] [2022-07-23 13:27:58,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:27:58,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2022-07-23 13:27:58,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:27:58,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2022-07-23 13:27:58,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2310, Invalid=10346, Unknown=0, NotChecked=0, Total=12656 [2022-07-23 13:27:58,006 INFO L87 Difference]: Start difference. First operand 538 states and 556 transitions. Second operand has 113 states, 112 states have (on average 2.2589285714285716) internal successors, (253), 113 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:28:00,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:28:00,617 INFO L93 Difference]: Finished difference Result 1218 states and 1259 transitions. [2022-07-23 13:28:00,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2022-07-23 13:28:00,618 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 112 states have (on average 2.2589285714285716) internal successors, (253), 113 states have internal predecessors, (253), 0 states have call successors, (0), 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 [2022-07-23 13:28:00,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:28:00,620 INFO L225 Difference]: With dead ends: 1218 [2022-07-23 13:28:00,620 INFO L226 Difference]: Without dead ends: 1204 [2022-07-23 13:28:00,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14383 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=8431, Invalid=29789, Unknown=0, NotChecked=0, Total=38220 [2022-07-23 13:28:00,622 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 994 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-23 13:28:00,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [994 Valid, 144 Invalid, 817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-23 13:28:00,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2022-07-23 13:28:00,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 538. [2022-07-23 13:28:00,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 537 states have (on average 1.0353817504655494) internal successors, (556), 537 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:28:00,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 556 transitions. [2022-07-23 13:28:00,940 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 556 transitions. Word has length 85 [2022-07-23 13:28:00,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:28:00,940 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 556 transitions. [2022-07-23 13:28:00,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 112 states have (on average 2.2589285714285716) internal successors, (253), 113 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:28:00,940 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 556 transitions. [2022-07-23 13:28:00,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-23 13:28:00,941 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:28:00,941 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1] [2022-07-23 13:28:00,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-07-23 13:28:01,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-07-23 13:28:01,155 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:28:01,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:28:01,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1145678342, now seen corresponding path program 1 times [2022-07-23 13:28:01,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:28:01,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378505800] [2022-07-23 13:28:01,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:28:01,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:28:01,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:01,815 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:28:01,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:28:01,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378505800] [2022-07-23 13:28:01,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378505800] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:28:01,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875065990] [2022-07-23 13:28:01,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:28:01,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:28:01,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:28:01,816 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) [2022-07-23 13:28:01,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-07-23 13:28:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:01,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 45 conjunts are in the unsatisfiable core [2022-07-23 13:28:01,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:28:02,868 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:28:02,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:28:04,160 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:28:04,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875065990] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:28:04,160 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:28:04,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 130 [2022-07-23 13:28:04,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649274977] [2022-07-23 13:28:04,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:28:04,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2022-07-23 13:28:04,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:28:04,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2022-07-23 13:28:04,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3132, Invalid=13898, Unknown=0, NotChecked=0, Total=17030 [2022-07-23 13:28:04,164 INFO L87 Difference]: Start difference. First operand 538 states and 556 transitions. Second operand has 131 states, 130 states have (on average 2.4076923076923076) internal successors, (313), 131 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:28:08,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:28:08,026 INFO L93 Difference]: Finished difference Result 1165 states and 1226 transitions. [2022-07-23 13:28:08,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2022-07-23 13:28:08,027 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 130 states have (on average 2.4076923076923076) internal successors, (313), 131 states have internal predecessors, (313), 0 states have call successors, (0), 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 [2022-07-23 13:28:08,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:28:08,029 INFO L225 Difference]: With dead ends: 1165 [2022-07-23 13:28:08,029 INFO L226 Difference]: Without dead ends: 1142 [2022-07-23 13:28:08,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22521 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=11677, Invalid=46645, Unknown=0, NotChecked=0, Total=58322 [2022-07-23 13:28:08,032 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 1176 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1176 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 1074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-23 13:28:08,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1176 Valid, 165 Invalid, 1074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-23 13:28:08,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2022-07-23 13:28:08,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 648. [2022-07-23 13:28:08,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 647 states have (on average 1.052550231839258) internal successors, (681), 647 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:28:08,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 681 transitions. [2022-07-23 13:28:08,325 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 681 transitions. Word has length 105 [2022-07-23 13:28:08,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:28:08,326 INFO L495 AbstractCegarLoop]: Abstraction has 648 states and 681 transitions. [2022-07-23 13:28:08,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 130 states have (on average 2.4076923076923076) internal successors, (313), 131 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:28:08,326 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 681 transitions. [2022-07-23 13:28:08,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-23 13:28:08,327 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:28:08,327 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 12, 9, 9, 9, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1] [2022-07-23 13:28:08,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-07-23 13:28:08,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-07-23 13:28:08,529 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:28:08,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:28:08,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1299356552, now seen corresponding path program 7 times [2022-07-23 13:28:08,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:28:08,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221363512] [2022-07-23 13:28:08,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:28:08,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:28:08,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:09,435 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 0 proven. 669 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:28:09,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:28:09,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221363512] [2022-07-23 13:28:09,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221363512] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:28:09,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094804017] [2022-07-23 13:28:09,436 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-23 13:28:09,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:28:09,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:28:09,438 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) [2022-07-23 13:28:09,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-07-23 13:28:09,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:09,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 53 conjunts are in the unsatisfiable core [2022-07-23 13:28:09,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:28:10,845 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 0 proven. 669 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:28:10,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:28:12,550 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 0 proven. 669 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:28:12,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094804017] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:28:12,550 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:28:12,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52, 52] total 154 [2022-07-23 13:28:12,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059113787] [2022-07-23 13:28:12,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:28:12,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 155 states [2022-07-23 13:28:12,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:28:12,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2022-07-23 13:28:12,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4308, Invalid=19562, Unknown=0, NotChecked=0, Total=23870 [2022-07-23 13:28:12,554 INFO L87 Difference]: Start difference. First operand 648 states and 681 transitions. Second operand has 155 states, 154 states have (on average 2.227272727272727) internal successors, (343), 155 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:28:17,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:28:17,173 INFO L93 Difference]: Finished difference Result 1562 states and 1629 transitions. [2022-07-23 13:28:17,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2022-07-23 13:28:17,173 INFO L78 Accepts]: Start accepts. Automaton has has 155 states, 154 states have (on average 2.227272727272727) internal successors, (343), 155 states have internal predecessors, (343), 0 states have call successors, (0), 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 [2022-07-23 13:28:17,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:28:17,177 INFO L225 Difference]: With dead ends: 1562 [2022-07-23 13:28:17,177 INFO L226 Difference]: Without dead ends: 1542 [2022-07-23 13:28:17,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 268 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27974 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=15988, Invalid=56642, Unknown=0, NotChecked=0, Total=72630 [2022-07-23 13:28:17,180 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 1387 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1387 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-23 13:28:17,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1387 Valid, 215 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 1030 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-23 13:28:17,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2022-07-23 13:28:17,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 648. [2022-07-23 13:28:17,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 647 states have (on average 1.052550231839258) internal successors, (681), 647 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:28:17,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 681 transitions. [2022-07-23 13:28:17,589 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 681 transitions. Word has length 115 [2022-07-23 13:28:17,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:28:17,589 INFO L495 AbstractCegarLoop]: Abstraction has 648 states and 681 transitions. [2022-07-23 13:28:17,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 155 states, 154 states have (on average 2.227272727272727) internal successors, (343), 155 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:28:17,589 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 681 transitions. [2022-07-23 13:28:17,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-23 13:28:17,590 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:28:17,591 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 16, 11, 11, 11, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1] [2022-07-23 13:28:17,611 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-07-23 13:28:17,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-07-23 13:28:17,802 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:28:17,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:28:17,802 INFO L85 PathProgramCache]: Analyzing trace with hash 879423149, now seen corresponding path program 8 times [2022-07-23 13:28:17,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:28:17,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404282326] [2022-07-23 13:28:17,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:28:17,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:28:17,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:18,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:28:18,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:28:18,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404282326] [2022-07-23 13:28:18,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404282326] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:28:18,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494334309] [2022-07-23 13:28:18,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 13:28:18,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:28:18,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:28:18,939 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) [2022-07-23 13:28:18,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-07-23 13:28:18,986 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-23 13:28:18,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:28:18,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 67 conjunts are in the unsatisfiable core [2022-07-23 13:28:18,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:28:20,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:28:20,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:28:23,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:28:23,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494334309] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:28:23,712 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:28:23,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66, 66] total 196 [2022-07-23 13:28:23,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692821752] [2022-07-23 13:28:23,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:28:23,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 197 states [2022-07-23 13:28:23,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:28:23,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2022-07-23 13:28:23,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6930, Invalid=31682, Unknown=0, NotChecked=0, Total=38612 [2022-07-23 13:28:23,732 INFO L87 Difference]: Start difference. First operand 648 states and 681 transitions. Second operand has 197 states, 196 states have (on average 2.2091836734693877) internal successors, (433), 197 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:28:30,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:28:30,842 INFO L93 Difference]: Finished difference Result 1769 states and 1846 transitions. [2022-07-23 13:28:30,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2022-07-23 13:28:30,843 INFO L78 Accepts]: Start accepts. Automaton has has 197 states, 196 states have (on average 2.2091836734693877) internal successors, (433), 197 states have internal predecessors, (433), 0 states have call successors, (0), 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 [2022-07-23 13:28:30,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:28:30,847 INFO L225 Difference]: With dead ends: 1769 [2022-07-23 13:28:30,847 INFO L226 Difference]: Without dead ends: 1744 [2022-07-23 13:28:30,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 342 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46023 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=25950, Invalid=92042, Unknown=0, NotChecked=0, Total=117992 [2022-07-23 13:28:30,851 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 2121 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2121 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 1498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-23 13:28:30,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2121 Valid, 250 Invalid, 1498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-23 13:28:30,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2022-07-23 13:28:31,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 718. [2022-07-23 13:28:31,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 717 states have (on average 1.0474198047419805) internal successors, (751), 717 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:28:31,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 751 transitions. [2022-07-23 13:28:31,338 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 751 transitions. Word has length 145 [2022-07-23 13:28:31,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:28:31,339 INFO L495 AbstractCegarLoop]: Abstraction has 718 states and 751 transitions. [2022-07-23 13:28:31,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 197 states, 196 states have (on average 2.2091836734693877) internal successors, (433), 197 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:28:31,339 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 751 transitions. [2022-07-23 13:28:31,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-23 13:28:31,340 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:28:31,340 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 21, 13, 13, 13, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1] [2022-07-23 13:28:31,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-07-23 13:28:31,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:28:31,541 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:28:31,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:28:31,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1621560041, now seen corresponding path program 9 times [2022-07-23 13:28:31,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:28:31,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598469170] [2022-07-23 13:28:31,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:28:31,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:28:31,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:33,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1798 backedges. 0 proven. 1798 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:28:33,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:28:33,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598469170] [2022-07-23 13:28:33,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598469170] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:28:33,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461212814] [2022-07-23 13:28:33,410 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-23 13:28:33,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:28:33,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:28:33,411 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) [2022-07-23 13:28:33,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-07-23 13:28:33,487 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2022-07-23 13:28:33,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:28:33,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 83 conjunts are in the unsatisfiable core [2022-07-23 13:28:33,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:28:36,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1798 backedges. 0 proven. 1798 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:28:36,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:28:40,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1798 backedges. 0 proven. 1798 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:28:40,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461212814] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:28:40,412 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:28:40,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82, 82] total 244 [2022-07-23 13:28:40,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084083505] [2022-07-23 13:28:40,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:28:40,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 245 states [2022-07-23 13:28:40,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:28:40,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 245 interpolants. [2022-07-23 13:28:40,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10722, Invalid=49058, Unknown=0, NotChecked=0, Total=59780 [2022-07-23 13:28:40,420 INFO L87 Difference]: Start difference. First operand 718 states and 751 transitions. Second operand has 245 states, 244 states have (on average 2.192622950819672) internal successors, (535), 245 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:28:50,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:28:50,733 INFO L93 Difference]: Finished difference Result 1797 states and 1886 transitions. [2022-07-23 13:28:50,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 266 states. [2022-07-23 13:28:50,733 INFO L78 Accepts]: Start accepts. Automaton has has 245 states, 244 states have (on average 2.192622950819672) internal successors, (535), 245 states have internal predecessors, (535), 0 states have call successors, (0), 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 179 [2022-07-23 13:28:50,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:28:50,737 INFO L225 Difference]: With dead ends: 1797 [2022-07-23 13:28:50,737 INFO L226 Difference]: Without dead ends: 1766 [2022-07-23 13:28:50,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 621 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 426 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71966 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=40293, Invalid=142463, Unknown=0, NotChecked=0, Total=182756 [2022-07-23 13:28:50,745 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 2352 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 1509 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2352 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 1807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 1509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-23 13:28:50,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2352 Valid, 303 Invalid, 1807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 1509 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-23 13:28:50,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1766 states. [2022-07-23 13:28:51,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1766 to 850. [2022-07-23 13:28:51,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 849 states have (on average 1.0400471142520613) internal successors, (883), 849 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:28:51,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 883 transitions. [2022-07-23 13:28:51,378 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 883 transitions. Word has length 179 [2022-07-23 13:28:51,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:28:51,379 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 883 transitions. [2022-07-23 13:28:51,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 245 states, 244 states have (on average 2.192622950819672) internal successors, (535), 245 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:28:51,379 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 883 transitions. [2022-07-23 13:28:51,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-07-23 13:28:51,381 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:28:51,381 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 15, 15, 15, 14, 14, 14, 13, 13, 2, 1, 1, 1, 1, 1] [2022-07-23 13:28:51,401 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-07-23 13:28:51,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-07-23 13:28:51,595 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:28:51,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:28:51,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1477703569, now seen corresponding path program 10 times [2022-07-23 13:28:51,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:28:51,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143993554] [2022-07-23 13:28:51,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:28:51,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:28:51,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:28:53,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2048 backedges. 0 proven. 2048 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:28:53,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:28:53,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143993554] [2022-07-23 13:28:53,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143993554] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:28:53,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152054969] [2022-07-23 13:28:53,496 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-23 13:28:53,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:28:53,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:28:53,498 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:28:53,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-07-23 13:28:53,621 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-23 13:28:53,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:28:53,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 87 conjunts are in the unsatisfiable core [2022-07-23 13:28:53,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:28:56,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2048 backedges. 0 proven. 2048 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:28:56,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:29:01,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2048 backedges. 0 proven. 2048 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:29:01,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152054969] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:29:01,298 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:29:01,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86, 86] total 256 [2022-07-23 13:29:01,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039165060] [2022-07-23 13:29:01,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:29:01,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 257 states [2022-07-23 13:29:01,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:29:01,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 257 interpolants. [2022-07-23 13:29:01,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11638, Invalid=54154, Unknown=0, NotChecked=0, Total=65792 [2022-07-23 13:29:01,305 INFO L87 Difference]: Start difference. First operand 850 states and 883 transitions. Second operand has 257 states, 256 states have (on average 2.34765625) internal successors, (601), 257 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:29:14,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:29:14,583 INFO L93 Difference]: Finished difference Result 1888 states and 2003 transitions. [2022-07-23 13:29:14,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 306 states. [2022-07-23 13:29:14,584 INFO L78 Accepts]: Start accepts. Automaton has has 257 states, 256 states have (on average 2.34765625) internal successors, (601), 257 states have internal predecessors, (601), 0 states have call successors, (0), 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 201 [2022-07-23 13:29:14,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:29:14,588 INFO L225 Difference]: With dead ends: 1888 [2022-07-23 13:29:14,588 INFO L226 Difference]: Without dead ends: 1844 [2022-07-23 13:29:14,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 705 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 474 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90363 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=44727, Invalid=181373, Unknown=0, NotChecked=0, Total=226100 [2022-07-23 13:29:14,598 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 2714 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 1701 mSolverCounterSat, 621 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2714 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 2322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 621 IncrementalHoareTripleChecker+Valid, 1701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:29:14,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2714 Valid, 334 Invalid, 2322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [621 Valid, 1701 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-23 13:29:14,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2022-07-23 13:29:15,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1035. [2022-07-23 13:29:15,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 1034 states have (on average 1.0570599613152805) internal successors, (1093), 1034 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:29:15,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1093 transitions. [2022-07-23 13:29:15,187 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1093 transitions. Word has length 201 [2022-07-23 13:29:15,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:29:15,187 INFO L495 AbstractCegarLoop]: Abstraction has 1035 states and 1093 transitions. [2022-07-23 13:29:15,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 257 states, 256 states have (on average 2.34765625) internal successors, (601), 257 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:29:15,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1093 transitions. [2022-07-23 13:29:15,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-07-23 13:29:15,189 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:29:15,190 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 27, 15, 15, 15, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1] [2022-07-23 13:29:15,212 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-07-23 13:29:15,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-07-23 13:29:15,404 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:29:15,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:29:15,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1850806214, now seen corresponding path program 11 times [2022-07-23 13:29:15,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:29:15,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145498812] [2022-07-23 13:29:15,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:29:15,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:29:15,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:17,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2769 backedges. 0 proven. 2769 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:29:17,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:29:17,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145498812] [2022-07-23 13:29:17,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145498812] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:29:17,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561356821] [2022-07-23 13:29:17,880 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-23 13:29:17,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:29:17,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:29:17,881 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:29:17,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-07-23 13:29:17,994 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2022-07-23 13:29:17,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:29:17,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 101 conjunts are in the unsatisfiable core [2022-07-23 13:29:17,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:29:22,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2769 backedges. 0 proven. 2769 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:29:22,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:29:28,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2769 backedges. 0 proven. 2769 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:29:28,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561356821] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:29:28,321 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:29:28,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100, 100] total 298 [2022-07-23 13:29:28,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857738895] [2022-07-23 13:29:28,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:29:28,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 299 states [2022-07-23 13:29:28,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:29:28,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 299 interpolants. [2022-07-23 13:29:28,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16020, Invalid=73082, Unknown=0, NotChecked=0, Total=89102 [2022-07-23 13:29:28,329 INFO L87 Difference]: Start difference. First operand 1035 states and 1093 transitions. Second operand has 299 states, 298 states have (on average 2.1778523489932886) internal successors, (649), 299 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:29:44,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:29:44,198 INFO L93 Difference]: Finished difference Result 2842 states and 2970 transitions. [2022-07-23 13:29:44,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 324 states. [2022-07-23 13:29:44,199 INFO L78 Accepts]: Start accepts. Automaton has has 299 states, 298 states have (on average 2.1778523489932886) internal successors, (649), 299 states have internal predecessors, (649), 0 states have call successors, (0), 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 217 [2022-07-23 13:29:44,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:29:44,206 INFO L225 Difference]: With dead ends: 2842 [2022-07-23 13:29:44,206 INFO L226 Difference]: Without dead ends: 2804 [2022-07-23 13:29:44,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 755 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 520 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107780 ImplicationChecksByTransitivity, 20.7s TimeCoverageRelationStatistics Valid=60211, Invalid=211751, Unknown=0, NotChecked=0, Total=271962 [2022-07-23 13:29:44,215 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 3129 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 1828 mSolverCounterSat, 428 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3129 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 2256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 428 IncrementalHoareTripleChecker+Valid, 1828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:29:44,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3129 Valid, 359 Invalid, 2256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [428 Valid, 1828 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-23 13:29:44,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2804 states. [2022-07-23 13:29:44,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2804 to 1189. [2022-07-23 13:29:44,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1189 states, 1188 states have (on average 1.0496632996632997) internal successors, (1247), 1188 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:29:44,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1247 transitions. [2022-07-23 13:29:44,927 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1247 transitions. Word has length 217 [2022-07-23 13:29:44,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:29:44,927 INFO L495 AbstractCegarLoop]: Abstraction has 1189 states and 1247 transitions. [2022-07-23 13:29:44,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 299 states, 298 states have (on average 2.1778523489932886) internal successors, (649), 299 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:29:44,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1247 transitions. [2022-07-23 13:29:44,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2022-07-23 13:29:44,930 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:29:44,930 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 34, 17, 17, 17, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1] [2022-07-23 13:29:44,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-07-23 13:29:45,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-07-23 13:29:45,143 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:29:45,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:29:45,144 INFO L85 PathProgramCache]: Analyzing trace with hash -549109702, now seen corresponding path program 12 times [2022-07-23 13:29:45,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:29:45,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246689846] [2022-07-23 13:29:45,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:29:45,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:29:45,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:29:48,812 INFO L134 CoverageAnalysis]: Checked inductivity of 4119 backedges. 0 proven. 4119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:29:48,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:29:48,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246689846] [2022-07-23 13:29:48,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246689846] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:29:48,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490274997] [2022-07-23 13:29:48,813 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-23 13:29:48,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:29:48,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:29:48,814 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:29:48,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-07-23 13:29:48,945 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 35 check-sat command(s) [2022-07-23 13:29:48,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:29:48,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 121 conjunts are in the unsatisfiable core [2022-07-23 13:29:48,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:29:54,756 INFO L134 CoverageAnalysis]: Checked inductivity of 4119 backedges. 0 proven. 4119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:29:54,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:30:03,780 INFO L134 CoverageAnalysis]: Checked inductivity of 4119 backedges. 0 proven. 4119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:30:03,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490274997] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:30:03,780 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:30:03,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [120, 120, 120] total 358 [2022-07-23 13:30:03,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399575880] [2022-07-23 13:30:03,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:30:03,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 359 states [2022-07-23 13:30:03,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:30:03,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 359 interpolants. [2022-07-23 13:30:03,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23208, Invalid=105314, Unknown=0, NotChecked=0, Total=128522 [2022-07-23 13:30:03,795 INFO L87 Difference]: Start difference. First operand 1189 states and 1247 transitions. Second operand has 359 states, 358 states have (on average 2.164804469273743) internal successors, (775), 359 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:30:28,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:30:28,391 INFO L93 Difference]: Finished difference Result 3092 states and 3236 transitions. [2022-07-23 13:30:28,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 388 states. [2022-07-23 13:30:28,392 INFO L78 Accepts]: Start accepts. Automaton has has 359 states, 358 states have (on average 2.164804469273743) internal successors, (775), 359 states have internal predecessors, (775), 0 states have call successors, (0), 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 259 [2022-07-23 13:30:28,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:30:28,396 INFO L225 Difference]: With dead ends: 3092 [2022-07-23 13:30:28,396 INFO L226 Difference]: Without dead ends: 3046 [2022-07-23 13:30:28,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 903 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 624 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155834 ImplicationChecksByTransitivity, 30.0s TimeCoverageRelationStatistics Valid=87051, Invalid=304199, Unknown=0, NotChecked=0, Total=391250 [2022-07-23 13:30:28,414 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4204 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 2119 mSolverCounterSat, 524 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4204 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 2643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 524 IncrementalHoareTripleChecker+Valid, 2119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-23 13:30:28,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4204 Valid, 418 Invalid, 2643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [524 Valid, 2119 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-23 13:30:28,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3046 states. [2022-07-23 13:30:29,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3046 to 1365. [2022-07-23 13:30:29,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 1364 states have (on average 1.0432551319648093) internal successors, (1423), 1364 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:30:29,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 1423 transitions. [2022-07-23 13:30:29,290 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 1423 transitions. Word has length 259 [2022-07-23 13:30:29,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:30:29,290 INFO L495 AbstractCegarLoop]: Abstraction has 1365 states and 1423 transitions. [2022-07-23 13:30:29,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 359 states, 358 states have (on average 2.164804469273743) internal successors, (775), 359 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:30:29,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 1423 transitions. [2022-07-23 13:30:29,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2022-07-23 13:30:29,292 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:30:29,292 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 29, 29, 29, 18, 18, 18, 17, 17, 12, 1, 1, 1, 1, 1] [2022-07-23 13:30:29,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-07-23 13:30:29,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:30:29,493 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-07-23 13:30:29,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:30:29,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1478483941, now seen corresponding path program 13 times [2022-07-23 13:30:29,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:30:29,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893294646] [2022-07-23 13:30:29,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:30:29,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:30:29,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:33,708 INFO L134 CoverageAnalysis]: Checked inductivity of 4374 backedges. 0 proven. 4374 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:30:33,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:30:33,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893294646] [2022-07-23 13:30:33,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893294646] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:30:33,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207812170] [2022-07-23 13:30:33,708 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-23 13:30:33,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:30:33,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:30:33,709 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:30:33,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-07-23 13:30:33,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:30:33,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 131 conjunts are in the unsatisfiable core [2022-07-23 13:30:33,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:30:40,496 INFO L134 CoverageAnalysis]: Checked inductivity of 4374 backedges. 0 proven. 4374 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:30:40,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:30:50,770 INFO L134 CoverageAnalysis]: Checked inductivity of 4374 backedges. 0 proven. 4374 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:30:50,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207812170] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:30:50,771 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:30:50,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [130, 130, 130] total 388 [2022-07-23 13:30:50,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828148140] [2022-07-23 13:30:50,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:30:50,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 389 states [2022-07-23 13:30:50,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:30:50,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 389 interpolants. [2022-07-23 13:30:50,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25810, Invalid=125122, Unknown=0, NotChecked=0, Total=150932 [2022-07-23 13:30:50,786 INFO L87 Difference]: Start difference. First operand 1365 states and 1423 transitions. Second operand has 389 states, 388 states have (on average 2.2912371134020617) internal successors, (889), 389 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)