./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.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 0455ba49274114922cfe1b7739d9cb0a89e6c868 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Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 10:55:02,394 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 10:55:02,395 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 10:55:02,427 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 10:55:02,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 10:55:02,431 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 10:55:02,432 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 10:55:02,435 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 10:55:02,437 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 10:55:02,440 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 10:55:02,441 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 10:55:02,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 10:55:02,444 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 10:55:02,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 10:55:02,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 10:55:02,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 10:55:02,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 10:55:02,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 10:55:02,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 10:55:02,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 10:55:02,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 10:55:02,458 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 10:55:02,459 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 10:55:02,460 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 10:55:02,465 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 10:55:02,465 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 10:55:02,465 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 10:55:02,466 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 10:55:02,467 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 10:55:02,467 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 10:55:02,467 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 10:55:02,468 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 10:55:02,469 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 10:55:02,469 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 10:55:02,470 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 10:55:02,470 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 10:55:02,471 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 10:55:02,471 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 10:55:02,471 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 10:55:02,472 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 10:55:02,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 10:55:02,473 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-08-27 10:55:02,495 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 10:55:02,496 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 10:55:02,496 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 10:55:02,496 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 10:55:02,497 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 10:55:02,497 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 10:55:02,497 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 10:55:02,497 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 10:55:02,497 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 10:55:02,498 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 10:55:02,498 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 10:55:02,498 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-27 10:55:02,498 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 10:55:02,498 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-27 10:55:02,498 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-08-27 10:55:02,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 10:55:02,499 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 10:55:02,499 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-27 10:55:02,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 10:55:02,499 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 10:55:02,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 10:55:02,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 10:55:02,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 10:55:02,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 10:55:02,500 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-27 10:55:02,500 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 10:55:02,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 10:55:02,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-27 10:55:02,500 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 10:55:02,500 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0455ba49274114922cfe1b7739d9cb0a89e6c868 [2021-08-27 10:55:02,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 10:55:02,742 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 10:55:02,744 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 10:55:02,744 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 10:55:02,746 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 10:55:02,746 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c [2021-08-27 10:55:02,790 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7de994ce3/cb8d9bcb30344f48b60167ad096eee2c/FLAGe568d0f0a [2021-08-27 10:55:03,147 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 10:55:03,148 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c [2021-08-27 10:55:03,152 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7de994ce3/cb8d9bcb30344f48b60167ad096eee2c/FLAGe568d0f0a [2021-08-27 10:55:03,163 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7de994ce3/cb8d9bcb30344f48b60167ad096eee2c [2021-08-27 10:55:03,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 10:55:03,167 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 10:55:03,169 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 10:55:03,169 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 10:55:03,172 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 10:55:03,172 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:55:03" (1/1) ... [2021-08-27 10:55:03,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5530d08d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:03, skipping insertion in model container [2021-08-27 10:55:03,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:55:03" (1/1) ... [2021-08-27 10:55:03,177 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 10:55:03,188 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 10:55:03,287 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 10:55:03,297 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 10:55:03,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 10:55:03,322 INFO L208 MainTranslator]: Completed translation [2021-08-27 10:55:03,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:03 WrapperNode [2021-08-27 10:55:03,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 10:55:03,324 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 10:55:03,324 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 10:55:03,324 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 10:55:03,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:03" (1/1) ... [2021-08-27 10:55:03,332 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:03" (1/1) ... [2021-08-27 10:55:03,370 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 10:55:03,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 10:55:03,372 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 10:55:03,372 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 10:55:03,377 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:03" (1/1) ... [2021-08-27 10:55:03,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:03" (1/1) ... [2021-08-27 10:55:03,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:03" (1/1) ... [2021-08-27 10:55:03,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:03" (1/1) ... [2021-08-27 10:55:03,380 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:03" (1/1) ... [2021-08-27 10:55:03,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:03" (1/1) ... [2021-08-27 10:55:03,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:03" (1/1) ... [2021-08-27 10:55:03,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 10:55:03,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 10:55:03,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 10:55:03,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 10:55:03,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:03" (1/1) ... [2021-08-27 10:55:03,394 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 10:55:03,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:03,423 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-27 10:55:03,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-27 10:55:03,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 10:55:03,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 10:55:03,602 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 10:55:03,603 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-08-27 10:55:03,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:55:03 BoogieIcfgContainer [2021-08-27 10:55:03,605 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 10:55:03,606 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 10:55:03,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 10:55:03,608 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 10:55:03,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 10:55:03" (1/3) ... [2021-08-27 10:55:03,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796e3a68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:55:03, skipping insertion in model container [2021-08-27 10:55:03,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:55:03" (2/3) ... [2021-08-27 10:55:03,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796e3a68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:55:03, skipping insertion in model container [2021-08-27 10:55:03,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:55:03" (3/3) ... [2021-08-27 10:55:03,610 INFO L111 eAbstractionObserver]: Analyzing ICFG GopanReps-CAV2006-Fig1a.c [2021-08-27 10:55:03,614 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 10:55:03,614 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-08-27 10:55:03,646 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 10:55:03,650 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-27 10:55:03,651 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-27 10:55:03,660 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 12 states have (on average 1.75) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:03,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-08-27 10:55:03,663 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:03,663 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-08-27 10:55:03,664 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:03,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:03,668 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2021-08-27 10:55:03,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:03,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371873482] [2021-08-27 10:55:03,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:03,674 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:03,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:03,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:03,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:03,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371873482] [2021-08-27 10:55:03,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371873482] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:55:03,792 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:55:03,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 10:55:03,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466898502] [2021-08-27 10:55:03,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 10:55:03,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:03,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 10:55:03,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:55:03,823 INFO L87 Difference]: Start difference. First operand has 19 states, 12 states have (on average 1.75) internal successors, (21), 18 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) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:03,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:03,852 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2021-08-27 10:55:03,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 10:55:03,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2021-08-27 10:55:03,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:03,858 INFO L225 Difference]: With dead ends: 49 [2021-08-27 10:55:03,858 INFO L226 Difference]: Without dead ends: 23 [2021-08-27 10:55:03,860 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:55:03,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-08-27 10:55:03,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2021-08-27 10:55:03,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:03,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-08-27 10:55:03,878 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 4 [2021-08-27 10:55:03,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:03,879 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-08-27 10:55:03,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:03,879 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-08-27 10:55:03,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-08-27 10:55:03,879 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:03,879 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-08-27 10:55:03,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 10:55:03,880 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:03,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:03,880 INFO L82 PathProgramCache]: Analyzing trace with hash 963339, now seen corresponding path program 1 times [2021-08-27 10:55:03,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:03,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899548484] [2021-08-27 10:55:03,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:03,881 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:03,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:03,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:03,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:03,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899548484] [2021-08-27 10:55:03,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899548484] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:55:03,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:55:03,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-08-27 10:55:03,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316256970] [2021-08-27 10:55:03,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 10:55:03,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:03,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 10:55:03,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:55:03,903 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:03,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:03,945 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2021-08-27 10:55:03,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 10:55:03,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2021-08-27 10:55:03,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:03,947 INFO L225 Difference]: With dead ends: 21 [2021-08-27 10:55:03,947 INFO L226 Difference]: Without dead ends: 20 [2021-08-27 10:55:03,948 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:55:03,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-08-27 10:55:03,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-08-27 10:55:03,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 19 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) [2021-08-27 10:55:03,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-08-27 10:55:03,950 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 4 [2021-08-27 10:55:03,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:03,951 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-08-27 10:55:03,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:03,951 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-08-27 10:55:03,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-08-27 10:55:03,951 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:03,951 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-08-27 10:55:03,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 10:55:03,952 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:03,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:03,952 INFO L82 PathProgramCache]: Analyzing trace with hash 29863556, now seen corresponding path program 1 times [2021-08-27 10:55:03,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:03,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615288180] [2021-08-27 10:55:03,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:03,953 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:03,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:03,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:03,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:04,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615288180] [2021-08-27 10:55:04,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615288180] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:55:04,000 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:55:04,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-08-27 10:55:04,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169392067] [2021-08-27 10:55:04,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 10:55:04,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:04,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 10:55:04,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:55:04,004 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:04,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:04,030 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2021-08-27 10:55:04,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 10:55:04,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-08-27 10:55:04,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:04,032 INFO L225 Difference]: With dead ends: 25 [2021-08-27 10:55:04,032 INFO L226 Difference]: Without dead ends: 23 [2021-08-27 10:55:04,033 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:55:04,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-08-27 10:55:04,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2021-08-27 10:55:04,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:04,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-08-27 10:55:04,038 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 5 [2021-08-27 10:55:04,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:04,038 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-08-27 10:55:04,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:04,039 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-08-27 10:55:04,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-27 10:55:04,039 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:04,039 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 10:55:04,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-27 10:55:04,040 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:04,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:04,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1365891962, now seen corresponding path program 1 times [2021-08-27 10:55:04,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:04,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944007029] [2021-08-27 10:55:04,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:04,043 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:04,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:04,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:04,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:04,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944007029] [2021-08-27 10:55:04,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944007029] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:55:04,075 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:55:04,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-08-27 10:55:04,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165063033] [2021-08-27 10:55:04,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 10:55:04,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:04,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 10:55:04,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:55:04,080 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2021-08-27 10:55:04,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:04,098 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2021-08-27 10:55:04,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 10:55:04,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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 [2021-08-27 10:55:04,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:04,099 INFO L225 Difference]: With dead ends: 18 [2021-08-27 10:55:04,100 INFO L226 Difference]: Without dead ends: 17 [2021-08-27 10:55:04,100 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 10:55:04,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-08-27 10:55:04,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-08-27 10:55:04,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 16 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) [2021-08-27 10:55:04,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-08-27 10:55:04,107 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 7 [2021-08-27 10:55:04,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:04,107 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-08-27 10:55:04,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2021-08-27 10:55:04,108 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-08-27 10:55:04,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-27 10:55:04,108 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:04,108 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 10:55:04,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-27 10:55:04,109 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:04,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:04,111 INFO L82 PathProgramCache]: Analyzing trace with hash -767237628, now seen corresponding path program 1 times [2021-08-27 10:55:04,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:04,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167282124] [2021-08-27 10:55:04,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:04,112 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:04,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:04,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:04,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:04,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167282124] [2021-08-27 10:55:04,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167282124] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:04,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021971587] [2021-08-27 10:55:04,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:04,154 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:04,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:04,155 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:55:04,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-27 10:55:04,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:04,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-27 10:55:04,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:55:04,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:04,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021971587] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:04,288 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:55:04,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2] total 5 [2021-08-27 10:55:04,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623222038] [2021-08-27 10:55:04,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 10:55:04,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:04,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 10:55:04,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-27 10:55:04,291 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:04,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:04,370 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2021-08-27 10:55:04,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 10:55:04,371 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-08-27 10:55:04,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:04,371 INFO L225 Difference]: With dead ends: 35 [2021-08-27 10:55:04,371 INFO L226 Difference]: Without dead ends: 24 [2021-08-27 10:55:04,372 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 48.6ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-08-27 10:55:04,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-08-27 10:55:04,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2021-08-27 10:55:04,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:04,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2021-08-27 10:55:04,380 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 10 [2021-08-27 10:55:04,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:04,381 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2021-08-27 10:55:04,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:04,382 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2021-08-27 10:55:04,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-27 10:55:04,382 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:04,382 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1] [2021-08-27 10:55:04,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-27 10:55:04,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:04,597 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:04,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:04,597 INFO L82 PathProgramCache]: Analyzing trace with hash -907820675, now seen corresponding path program 2 times [2021-08-27 10:55:04,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:04,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666002146] [2021-08-27 10:55:04,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:04,598 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:04,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:04,632 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-27 10:55:04,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:04,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666002146] [2021-08-27 10:55:04,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666002146] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:55:04,633 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:55:04,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 10:55:04,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859184310] [2021-08-27 10:55:04,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 10:55:04,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:04,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 10:55:04,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-27 10:55:04,638 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 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) [2021-08-27 10:55:04,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:04,683 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2021-08-27 10:55:04,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 10:55:04,684 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 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 16 [2021-08-27 10:55:04,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:04,685 INFO L225 Difference]: With dead ends: 32 [2021-08-27 10:55:04,685 INFO L226 Difference]: Without dead ends: 30 [2021-08-27 10:55:04,686 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-27 10:55:04,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-08-27 10:55:04,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2021-08-27 10:55:04,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 25 states have (on average 1.2) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:04,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2021-08-27 10:55:04,695 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 16 [2021-08-27 10:55:04,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:04,695 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2021-08-27 10:55:04,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 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) [2021-08-27 10:55:04,695 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2021-08-27 10:55:04,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-27 10:55:04,696 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:04,696 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1] [2021-08-27 10:55:04,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-27 10:55:04,696 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:04,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:04,697 INFO L82 PathProgramCache]: Analyzing trace with hash -907820867, now seen corresponding path program 1 times [2021-08-27 10:55:04,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:04,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990181303] [2021-08-27 10:55:04,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:04,698 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:04,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:04,755 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:04,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:04,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990181303] [2021-08-27 10:55:04,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990181303] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:04,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47758844] [2021-08-27 10:55:04,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:04,756 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:04,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:04,757 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:55:04,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:04,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 10:55:04,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-27 10:55:04,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:55:04,900 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:04,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47758844] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:04,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:55:04,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-08-27 10:55:04,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556360708] [2021-08-27 10:55:04,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 10:55:04,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:04,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 10:55:04,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-08-27 10:55:04,903 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:04,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:04,948 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2021-08-27 10:55:04,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 10:55:04,949 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-08-27 10:55:04,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:04,950 INFO L225 Difference]: With dead ends: 60 [2021-08-27 10:55:04,951 INFO L226 Difference]: Without dead ends: 59 [2021-08-27 10:55:04,951 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.8ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-08-27 10:55:04,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-08-27 10:55:04,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 47. [2021-08-27 10:55:04,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 46 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:04,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 56 transitions. [2021-08-27 10:55:04,961 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 56 transitions. Word has length 16 [2021-08-27 10:55:04,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:04,962 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 56 transitions. [2021-08-27 10:55:04,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:04,962 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2021-08-27 10:55:04,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-27 10:55:04,964 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:04,964 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-08-27 10:55:04,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-27 10:55:05,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-08-27 10:55:05,169 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:05,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:05,172 INFO L82 PathProgramCache]: Analyzing trace with hash -537305888, now seen corresponding path program 1 times [2021-08-27 10:55:05,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:05,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311416758] [2021-08-27 10:55:05,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:05,173 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:05,224 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-27 10:55:05,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:05,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311416758] [2021-08-27 10:55:05,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311416758] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:05,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462235438] [2021-08-27 10:55:05,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:05,225 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:05,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:05,229 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:55:05,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-27 10:55:05,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:05,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 10:55:05,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:55:05,403 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:05,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462235438] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:05,404 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:55:05,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-08-27 10:55:05,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282912948] [2021-08-27 10:55:05,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 10:55:05,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:05,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 10:55:05,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-08-27 10:55:05,405 INFO L87 Difference]: Start difference. First operand 47 states and 56 transitions. Second operand has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:05,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:05,451 INFO L93 Difference]: Finished difference Result 75 states and 91 transitions. [2021-08-27 10:55:05,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 10:55:05,452 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-08-27 10:55:05,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:05,452 INFO L225 Difference]: With dead ends: 75 [2021-08-27 10:55:05,452 INFO L226 Difference]: Without dead ends: 40 [2021-08-27 10:55:05,453 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 28.6ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-08-27 10:55:05,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-08-27 10:55:05,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2021-08-27 10:55:05,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 38 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:05,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-08-27 10:55:05,463 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 18 [2021-08-27 10:55:05,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:05,465 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-08-27 10:55:05,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:05,465 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-08-27 10:55:05,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-27 10:55:05,466 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:05,466 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1] [2021-08-27 10:55:05,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-27 10:55:05,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:05,673 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:05,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:05,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1586405002, now seen corresponding path program 2 times [2021-08-27 10:55:05,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:05,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843789973] [2021-08-27 10:55:05,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:05,673 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:05,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:05,722 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:05,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:05,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843789973] [2021-08-27 10:55:05,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843789973] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:05,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737437666] [2021-08-27 10:55:05,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 10:55:05,723 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:05,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:05,725 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:55:05,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-27 10:55:05,761 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 10:55:05,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:55:05,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-27 10:55:05,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:55:05,839 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:05,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737437666] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:05,840 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:55:05,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-08-27 10:55:05,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941009148] [2021-08-27 10:55:05,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 10:55:05,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:05,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 10:55:05,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-08-27 10:55:05,841 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 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) [2021-08-27 10:55:05,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:05,864 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2021-08-27 10:55:05,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 10:55:05,864 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 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 22 [2021-08-27 10:55:05,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:05,865 INFO L225 Difference]: With dead ends: 42 [2021-08-27 10:55:05,865 INFO L226 Difference]: Without dead ends: 41 [2021-08-27 10:55:05,865 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.9ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-08-27 10:55:05,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-08-27 10:55:05,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2021-08-27 10:55:05,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 38 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:05,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-08-27 10:55:05,867 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 22 [2021-08-27 10:55:05,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:05,867 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-08-27 10:55:05,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 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) [2021-08-27 10:55:05,868 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-08-27 10:55:05,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-08-27 10:55:05,868 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:05,868 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1] [2021-08-27 10:55:05,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-27 10:55:06,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:06,074 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:06,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:06,074 INFO L82 PathProgramCache]: Analyzing trace with hash -89664657, now seen corresponding path program 3 times [2021-08-27 10:55:06,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:06,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870973704] [2021-08-27 10:55:06,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:06,075 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:06,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:06,115 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:06,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:06,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870973704] [2021-08-27 10:55:06,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870973704] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:06,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700645884] [2021-08-27 10:55:06,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 10:55:06,116 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:06,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:06,117 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:55:06,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-27 10:55:06,173 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-08-27 10:55:06,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:55:06,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-27 10:55:06,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:55:06,271 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:06,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700645884] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:06,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:55:06,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-08-27 10:55:06,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118287308] [2021-08-27 10:55:06,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 10:55:06,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:06,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 10:55:06,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-08-27 10:55:06,273 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:06,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:06,311 INFO L93 Difference]: Finished difference Result 107 states and 120 transitions. [2021-08-27 10:55:06,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 10:55:06,311 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-08-27 10:55:06,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:06,312 INFO L225 Difference]: With dead ends: 107 [2021-08-27 10:55:06,312 INFO L226 Difference]: Without dead ends: 106 [2021-08-27 10:55:06,312 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.5ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-08-27 10:55:06,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-08-27 10:55:06,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 96. [2021-08-27 10:55:06,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 94 states have (on average 1.1595744680851063) internal successors, (109), 95 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:06,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 109 transitions. [2021-08-27 10:55:06,318 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 109 transitions. Word has length 28 [2021-08-27 10:55:06,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:06,318 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 109 transitions. [2021-08-27 10:55:06,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:06,318 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 109 transitions. [2021-08-27 10:55:06,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-08-27 10:55:06,319 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:06,319 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1] [2021-08-27 10:55:06,335 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-08-27 10:55:06,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-08-27 10:55:06,525 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:06,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:06,526 INFO L82 PathProgramCache]: Analyzing trace with hash 661989032, now seen corresponding path program 4 times [2021-08-27 10:55:06,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:06,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711997280] [2021-08-27 10:55:06,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:06,526 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:06,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:06,590 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:06,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:06,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711997280] [2021-08-27 10:55:06,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711997280] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:06,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639996243] [2021-08-27 10:55:06,591 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-27 10:55:06,591 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:06,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:06,592 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:55:06,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-27 10:55:06,650 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-27 10:55:06,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:55:06,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-27 10:55:06,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:55:06,783 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:06,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639996243] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:06,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:55:06,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-08-27 10:55:06,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073799404] [2021-08-27 10:55:06,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 10:55:06,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:06,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 10:55:06,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-08-27 10:55:06,785 INFO L87 Difference]: Start difference. First operand 96 states and 109 transitions. Second operand has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:06,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:06,835 INFO L93 Difference]: Finished difference Result 183 states and 210 transitions. [2021-08-27 10:55:06,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 10:55:06,835 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2021-08-27 10:55:06,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:06,837 INFO L225 Difference]: With dead ends: 183 [2021-08-27 10:55:06,837 INFO L226 Difference]: Without dead ends: 182 [2021-08-27 10:55:06,838 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.7ms TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-08-27 10:55:06,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-08-27 10:55:06,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 111. [2021-08-27 10:55:06,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 109 states have (on average 1.165137614678899) internal successors, (127), 110 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) [2021-08-27 10:55:06,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 127 transitions. [2021-08-27 10:55:06,847 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 127 transitions. Word has length 34 [2021-08-27 10:55:06,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:06,847 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 127 transitions. [2021-08-27 10:55:06,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:06,847 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 127 transitions. [2021-08-27 10:55:06,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-08-27 10:55:06,848 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:06,848 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 2, 2, 2, 1, 1] [2021-08-27 10:55:06,865 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-08-27 10:55:07,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:07,061 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:07,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:07,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1050459643, now seen corresponding path program 2 times [2021-08-27 10:55:07,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:07,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308554670] [2021-08-27 10:55:07,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:07,061 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:07,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:07,102 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 22 proven. 44 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-27 10:55:07,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:07,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308554670] [2021-08-27 10:55:07,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308554670] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:07,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513175968] [2021-08-27 10:55:07,103 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 10:55:07,103 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:07,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:07,104 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:55:07,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-08-27 10:55:07,167 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 10:55:07,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:55:07,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-27 10:55:07,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:55:07,281 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 22 proven. 44 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-27 10:55:07,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513175968] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:07,281 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:55:07,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-08-27 10:55:07,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693242073] [2021-08-27 10:55:07,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 10:55:07,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:07,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 10:55:07,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-08-27 10:55:07,282 INFO L87 Difference]: Start difference. First operand 111 states and 127 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:07,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:07,314 INFO L93 Difference]: Finished difference Result 211 states and 244 transitions. [2021-08-27 10:55:07,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 10:55:07,315 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 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 36 [2021-08-27 10:55:07,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:07,316 INFO L225 Difference]: With dead ends: 211 [2021-08-27 10:55:07,316 INFO L226 Difference]: Without dead ends: 121 [2021-08-27 10:55:07,317 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.9ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-08-27 10:55:07,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-08-27 10:55:07,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 117. [2021-08-27 10:55:07,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 115 states have (on average 1.1565217391304348) internal successors, (133), 116 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) [2021-08-27 10:55:07,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 133 transitions. [2021-08-27 10:55:07,321 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 133 transitions. Word has length 36 [2021-08-27 10:55:07,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:07,321 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 133 transitions. [2021-08-27 10:55:07,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:07,322 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 133 transitions. [2021-08-27 10:55:07,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-08-27 10:55:07,322 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:07,322 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1] [2021-08-27 10:55:07,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-08-27 10:55:07,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:07,541 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:07,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:07,541 INFO L82 PathProgramCache]: Analyzing trace with hash 855337761, now seen corresponding path program 5 times [2021-08-27 10:55:07,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:07,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443714045] [2021-08-27 10:55:07,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:07,543 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:07,615 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:07,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:07,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443714045] [2021-08-27 10:55:07,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443714045] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:07,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195260934] [2021-08-27 10:55:07,616 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-27 10:55:07,616 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:07,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:07,621 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:55:07,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-08-27 10:55:07,721 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-08-27 10:55:07,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:55:07,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-27 10:55:07,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:55:07,845 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:07,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195260934] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:07,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:55:07,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-08-27 10:55:07,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138090758] [2021-08-27 10:55:07,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-27 10:55:07,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:07,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-27 10:55:07,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-08-27 10:55:07,848 INFO L87 Difference]: Start difference. First operand 117 states and 133 transitions. Second operand has 9 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:07,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:07,895 INFO L93 Difference]: Finished difference Result 221 states and 254 transitions. [2021-08-27 10:55:07,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-27 10:55:07,896 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-08-27 10:55:07,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:07,896 INFO L225 Difference]: With dead ends: 221 [2021-08-27 10:55:07,896 INFO L226 Difference]: Without dead ends: 220 [2021-08-27 10:55:07,897 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.9ms TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-08-27 10:55:07,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-08-27 10:55:07,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 132. [2021-08-27 10:55:07,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 130 states have (on average 1.1615384615384616) internal successors, (151), 131 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:07,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 151 transitions. [2021-08-27 10:55:07,901 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 151 transitions. Word has length 40 [2021-08-27 10:55:07,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:07,901 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 151 transitions. [2021-08-27 10:55:07,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:07,901 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 151 transitions. [2021-08-27 10:55:07,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-08-27 10:55:07,902 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:07,902 INFO L512 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 2, 2, 2, 1, 1] [2021-08-27 10:55:07,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-08-27 10:55:08,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-08-27 10:55:08,119 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:08,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:08,119 INFO L82 PathProgramCache]: Analyzing trace with hash 74075198, now seen corresponding path program 3 times [2021-08-27 10:55:08,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:08,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730811461] [2021-08-27 10:55:08,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:08,119 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:08,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:08,171 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 27 proven. 70 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-27 10:55:08,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:08,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730811461] [2021-08-27 10:55:08,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730811461] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:08,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435850354] [2021-08-27 10:55:08,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 10:55:08,171 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:08,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:08,172 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:55:08,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-08-27 10:55:08,271 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-08-27 10:55:08,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:55:08,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 10:55:08,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:55:08,401 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 48 proven. 8 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-08-27 10:55:08,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435850354] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:08,401 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:55:08,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 11 [2021-08-27 10:55:08,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435789116] [2021-08-27 10:55:08,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-27 10:55:08,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:08,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-27 10:55:08,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-08-27 10:55:08,402 INFO L87 Difference]: Start difference. First operand 132 states and 151 transitions. Second operand has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:08,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:08,441 INFO L93 Difference]: Finished difference Result 169 states and 194 transitions. [2021-08-27 10:55:08,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-27 10:55:08,442 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 0 states have call successors, (0), 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 [2021-08-27 10:55:08,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:08,442 INFO L225 Difference]: With dead ends: 169 [2021-08-27 10:55:08,442 INFO L226 Difference]: Without dead ends: 64 [2021-08-27 10:55:08,443 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.1ms TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-08-27 10:55:08,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-08-27 10:55:08,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2021-08-27 10:55:08,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 61 states have (on average 1.0819672131147542) internal successors, (66), 62 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:08,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2021-08-27 10:55:08,445 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 42 [2021-08-27 10:55:08,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:08,445 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2021-08-27 10:55:08,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:08,445 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2021-08-27 10:55:08,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-27 10:55:08,446 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:08,446 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1] [2021-08-27 10:55:08,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-08-27 10:55:08,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-08-27 10:55:08,653 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:08,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:08,653 INFO L82 PathProgramCache]: Analyzing trace with hash 714125530, now seen corresponding path program 6 times [2021-08-27 10:55:08,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:08,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287703907] [2021-08-27 10:55:08,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:08,653 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:08,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:08,735 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:08,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:08,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287703907] [2021-08-27 10:55:08,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287703907] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:08,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588693015] [2021-08-27 10:55:08,736 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-27 10:55:08,736 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:08,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:08,736 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:55:08,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-08-27 10:55:08,856 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-08-27 10:55:08,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:55:08,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-27 10:55:08,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:55:09,017 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:09,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588693015] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:09,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:55:09,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-08-27 10:55:09,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899777361] [2021-08-27 10:55:09,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-27 10:55:09,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:09,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-27 10:55:09,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-08-27 10:55:09,019 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:09,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:09,078 INFO L93 Difference]: Finished difference Result 216 states and 245 transitions. [2021-08-27 10:55:09,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-27 10:55:09,089 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-27 10:55:09,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:09,089 INFO L225 Difference]: With dead ends: 216 [2021-08-27 10:55:09,090 INFO L226 Difference]: Without dead ends: 215 [2021-08-27 10:55:09,090 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.8ms TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-08-27 10:55:09,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-08-27 10:55:09,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 198. [2021-08-27 10:55:09,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 196 states have (on average 1.153061224489796) internal successors, (226), 197 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:09,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 226 transitions. [2021-08-27 10:55:09,094 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 226 transitions. Word has length 46 [2021-08-27 10:55:09,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:09,095 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 226 transitions. [2021-08-27 10:55:09,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:09,095 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 226 transitions. [2021-08-27 10:55:09,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-08-27 10:55:09,095 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:09,096 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1] [2021-08-27 10:55:09,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-08-27 10:55:09,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-08-27 10:55:09,309 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:09,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:09,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1497430061, now seen corresponding path program 7 times [2021-08-27 10:55:09,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:09,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241575319] [2021-08-27 10:55:09,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:09,310 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:09,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:09,385 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:09,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:09,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241575319] [2021-08-27 10:55:09,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241575319] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:09,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645115321] [2021-08-27 10:55:09,386 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-27 10:55:09,386 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:09,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:09,387 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:55:09,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-08-27 10:55:09,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:09,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-27 10:55:09,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:55:09,672 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:09,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645115321] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:09,672 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:55:09,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-08-27 10:55:09,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14446900] [2021-08-27 10:55:09,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-27 10:55:09,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:09,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-27 10:55:09,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-08-27 10:55:09,674 INFO L87 Difference]: Start difference. First operand 198 states and 226 transitions. Second operand has 11 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:09,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:09,741 INFO L93 Difference]: Finished difference Result 378 states and 436 transitions. [2021-08-27 10:55:09,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-27 10:55:09,741 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-08-27 10:55:09,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:09,742 INFO L225 Difference]: With dead ends: 378 [2021-08-27 10:55:09,742 INFO L226 Difference]: Without dead ends: 377 [2021-08-27 10:55:09,743 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.2ms TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-08-27 10:55:09,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-08-27 10:55:09,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 219. [2021-08-27 10:55:09,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 217 states have (on average 1.1566820276497696) internal successors, (251), 218 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:09,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 251 transitions. [2021-08-27 10:55:09,748 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 251 transitions. Word has length 52 [2021-08-27 10:55:09,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:09,749 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 251 transitions. [2021-08-27 10:55:09,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:09,749 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 251 transitions. [2021-08-27 10:55:09,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-08-27 10:55:09,749 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:09,750 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1] [2021-08-27 10:55:09,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-08-27 10:55:09,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-08-27 10:55:09,961 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:09,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:09,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1807450100, now seen corresponding path program 8 times [2021-08-27 10:55:09,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:09,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721421612] [2021-08-27 10:55:09,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:09,962 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:09,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:10,042 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:10,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:10,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721421612] [2021-08-27 10:55:10,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721421612] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:10,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749631478] [2021-08-27 10:55:10,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 10:55:10,045 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:10,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:10,048 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:55:10,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-08-27 10:55:10,195 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 10:55:10,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:55:10,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-27 10:55:10,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:55:10,380 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:10,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749631478] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:10,381 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:55:10,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-08-27 10:55:10,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282825854] [2021-08-27 10:55:10,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-27 10:55:10,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:10,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-27 10:55:10,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-08-27 10:55:10,382 INFO L87 Difference]: Start difference. First operand 219 states and 251 transitions. Second operand has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:10,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:10,466 INFO L93 Difference]: Finished difference Result 422 states and 488 transitions. [2021-08-27 10:55:10,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-27 10:55:10,471 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2021-08-27 10:55:10,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:10,472 INFO L225 Difference]: With dead ends: 422 [2021-08-27 10:55:10,472 INFO L226 Difference]: Without dead ends: 421 [2021-08-27 10:55:10,473 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.4ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-08-27 10:55:10,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2021-08-27 10:55:10,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 240. [2021-08-27 10:55:10,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 238 states have (on average 1.1596638655462186) internal successors, (276), 239 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:10,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 276 transitions. [2021-08-27 10:55:10,478 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 276 transitions. Word has length 58 [2021-08-27 10:55:10,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:10,479 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 276 transitions. [2021-08-27 10:55:10,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:10,479 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 276 transitions. [2021-08-27 10:55:10,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-08-27 10:55:10,479 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:10,480 INFO L512 BasicCegarLoop]: trace histogram [10, 9, 9, 7, 7, 7, 3, 3, 3, 1, 1] [2021-08-27 10:55:10,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-08-27 10:55:10,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-08-27 10:55:10,685 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:10,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:10,685 INFO L82 PathProgramCache]: Analyzing trace with hash -410764061, now seen corresponding path program 4 times [2021-08-27 10:55:10,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:10,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864830692] [2021-08-27 10:55:10,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:10,685 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:10,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:10,740 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 67 proven. 140 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-08-27 10:55:10,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:10,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864830692] [2021-08-27 10:55:10,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864830692] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:10,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120599974] [2021-08-27 10:55:10,741 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-27 10:55:10,741 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:10,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:10,742 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:55:10,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-08-27 10:55:10,932 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-27 10:55:10,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:55:10,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-27 10:55:10,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:55:11,080 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 67 proven. 140 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-08-27 10:55:11,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120599974] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:11,082 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:55:11,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-08-27 10:55:11,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755983944] [2021-08-27 10:55:11,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-27 10:55:11,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:11,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-27 10:55:11,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-08-27 10:55:11,084 INFO L87 Difference]: Start difference. First operand 240 states and 276 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:11,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:11,114 INFO L93 Difference]: Finished difference Result 451 states and 524 transitions. [2021-08-27 10:55:11,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-27 10:55:11,114 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-08-27 10:55:11,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:11,115 INFO L225 Difference]: With dead ends: 451 [2021-08-27 10:55:11,115 INFO L226 Difference]: Without dead ends: 250 [2021-08-27 10:55:11,117 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.6ms TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-08-27 10:55:11,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-08-27 10:55:11,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 246. [2021-08-27 10:55:11,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 244 states have (on average 1.1557377049180328) internal successors, (282), 245 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:11,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 282 transitions. [2021-08-27 10:55:11,123 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 282 transitions. Word has length 60 [2021-08-27 10:55:11,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:11,123 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 282 transitions. [2021-08-27 10:55:11,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:11,123 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 282 transitions. [2021-08-27 10:55:11,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-08-27 10:55:11,124 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:11,124 INFO L512 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1] [2021-08-27 10:55:11,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-08-27 10:55:11,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-08-27 10:55:11,331 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:11,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:11,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1024665989, now seen corresponding path program 9 times [2021-08-27 10:55:11,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:11,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661696672] [2021-08-27 10:55:11,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:11,331 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:11,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:11,435 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:11,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:11,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661696672] [2021-08-27 10:55:11,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661696672] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:11,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581022018] [2021-08-27 10:55:11,436 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 10:55:11,436 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:11,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:11,436 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:55:11,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-08-27 10:55:11,636 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-08-27 10:55:11,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:55:11,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-27 10:55:11,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:55:11,807 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:11,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581022018] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:11,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:55:11,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-08-27 10:55:11,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103640158] [2021-08-27 10:55:11,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-27 10:55:11,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:11,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-27 10:55:11,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-08-27 10:55:11,808 INFO L87 Difference]: Start difference. First operand 246 states and 282 transitions. Second operand has 13 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 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) [2021-08-27 10:55:11,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:11,888 INFO L93 Difference]: Finished difference Result 472 states and 546 transitions. [2021-08-27 10:55:11,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-27 10:55:11,889 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 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 64 [2021-08-27 10:55:11,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:11,890 INFO L225 Difference]: With dead ends: 472 [2021-08-27 10:55:11,890 INFO L226 Difference]: Without dead ends: 471 [2021-08-27 10:55:11,890 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 64.5ms TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-08-27 10:55:11,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2021-08-27 10:55:11,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 267. [2021-08-27 10:55:11,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 265 states have (on average 1.1584905660377358) internal successors, (307), 266 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:11,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 307 transitions. [2021-08-27 10:55:11,897 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 307 transitions. Word has length 64 [2021-08-27 10:55:11,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:11,897 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 307 transitions. [2021-08-27 10:55:11,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 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) [2021-08-27 10:55:11,897 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 307 transitions. [2021-08-27 10:55:11,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-08-27 10:55:11,898 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:11,898 INFO L512 BasicCegarLoop]: trace histogram [11, 10, 10, 8, 8, 8, 3, 3, 3, 1, 1] [2021-08-27 10:55:11,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-08-27 10:55:12,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:12,115 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:12,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:12,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1756468196, now seen corresponding path program 5 times [2021-08-27 10:55:12,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:12,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520215816] [2021-08-27 10:55:12,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:12,115 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:12,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:12,192 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 76 proven. 184 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-08-27 10:55:12,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:12,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520215816] [2021-08-27 10:55:12,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520215816] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:12,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120955603] [2021-08-27 10:55:12,192 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-27 10:55:12,193 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:12,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:12,197 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:55:12,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-08-27 10:55:12,412 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-08-27 10:55:12,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:55:12,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-27 10:55:12,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:55:12,595 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 76 proven. 184 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-08-27 10:55:12,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120955603] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:12,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:55:12,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-08-27 10:55:12,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244770817] [2021-08-27 10:55:12,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-27 10:55:12,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:12,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-27 10:55:12,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-08-27 10:55:12,597 INFO L87 Difference]: Start difference. First operand 267 states and 307 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:12,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:12,641 INFO L93 Difference]: Finished difference Result 499 states and 580 transitions. [2021-08-27 10:55:12,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-27 10:55:12,641 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-08-27 10:55:12,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:12,642 INFO L225 Difference]: With dead ends: 499 [2021-08-27 10:55:12,642 INFO L226 Difference]: Without dead ends: 277 [2021-08-27 10:55:12,643 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.8ms TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-08-27 10:55:12,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-08-27 10:55:12,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 273. [2021-08-27 10:55:12,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 271 states have (on average 1.154981549815498) internal successors, (313), 272 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) [2021-08-27 10:55:12,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 313 transitions. [2021-08-27 10:55:12,653 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 313 transitions. Word has length 66 [2021-08-27 10:55:12,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:12,654 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 313 transitions. [2021-08-27 10:55:12,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:12,654 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 313 transitions. [2021-08-27 10:55:12,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-08-27 10:55:12,654 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:12,654 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1] [2021-08-27 10:55:12,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-08-27 10:55:12,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:12,861 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:12,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:12,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1856957378, now seen corresponding path program 10 times [2021-08-27 10:55:12,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:12,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895253221] [2021-08-27 10:55:12,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:12,861 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:12,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:12,959 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 363 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:12,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:12,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895253221] [2021-08-27 10:55:12,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895253221] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:12,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544219098] [2021-08-27 10:55:12,960 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-27 10:55:12,960 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:12,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:12,960 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:55:12,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-08-27 10:55:13,191 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-27 10:55:13,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:55:13,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-27 10:55:13,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:55:13,398 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 363 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:13,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544219098] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:13,398 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:55:13,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2021-08-27 10:55:13,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267999261] [2021-08-27 10:55:13,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-27 10:55:13,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:13,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-27 10:55:13,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-08-27 10:55:13,399 INFO L87 Difference]: Start difference. First operand 273 states and 313 transitions. Second operand has 14 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:13,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:13,501 INFO L93 Difference]: Finished difference Result 522 states and 604 transitions. [2021-08-27 10:55:13,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-27 10:55:13,501 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-08-27 10:55:13,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:13,503 INFO L225 Difference]: With dead ends: 522 [2021-08-27 10:55:13,503 INFO L226 Difference]: Without dead ends: 521 [2021-08-27 10:55:13,503 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 64.9ms TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-08-27 10:55:13,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2021-08-27 10:55:13,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 294. [2021-08-27 10:55:13,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 292 states have (on average 1.1575342465753424) internal successors, (338), 293 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:13,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 338 transitions. [2021-08-27 10:55:13,509 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 338 transitions. Word has length 70 [2021-08-27 10:55:13,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:13,509 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 338 transitions. [2021-08-27 10:55:13,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:13,510 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 338 transitions. [2021-08-27 10:55:13,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-08-27 10:55:13,510 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:13,510 INFO L512 BasicCegarLoop]: trace histogram [12, 11, 11, 9, 9, 9, 3, 3, 3, 1, 1] [2021-08-27 10:55:13,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-08-27 10:55:13,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:13,721 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:13,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:13,721 INFO L82 PathProgramCache]: Analyzing trace with hash -742617963, now seen corresponding path program 6 times [2021-08-27 10:55:13,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:13,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828958556] [2021-08-27 10:55:13,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:13,721 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:13,789 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 85 proven. 234 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-08-27 10:55:13,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:13,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828958556] [2021-08-27 10:55:13,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828958556] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:13,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647752195] [2021-08-27 10:55:13,789 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-27 10:55:13,789 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:13,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:13,790 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:55:13,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-08-27 10:55:14,046 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-08-27 10:55:14,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:55:14,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-27 10:55:14,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:55:14,254 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 126 proven. 21 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-08-27 10:55:14,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647752195] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:14,254 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:55:14,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 16 [2021-08-27 10:55:14,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356713068] [2021-08-27 10:55:14,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-27 10:55:14,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:14,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-27 10:55:14,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-08-27 10:55:14,255 INFO L87 Difference]: Start difference. First operand 294 states and 338 transitions. Second operand has 16 states, 16 states have (on average 5.8125) internal successors, (93), 16 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:14,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:14,321 INFO L93 Difference]: Finished difference Result 615 states and 724 transitions. [2021-08-27 10:55:14,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-27 10:55:14,322 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.8125) internal successors, (93), 16 states have internal predecessors, (93), 0 states have call successors, (0), 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 72 [2021-08-27 10:55:14,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:14,323 INFO L225 Difference]: With dead ends: 615 [2021-08-27 10:55:14,323 INFO L226 Difference]: Without dead ends: 372 [2021-08-27 10:55:14,324 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 77.9ms TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-08-27 10:55:14,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2021-08-27 10:55:14,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 363. [2021-08-27 10:55:14,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 361 states have (on average 1.1523545706371192) internal successors, (416), 362 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:14,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 416 transitions. [2021-08-27 10:55:14,330 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 416 transitions. Word has length 72 [2021-08-27 10:55:14,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:14,330 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 416 transitions. [2021-08-27 10:55:14,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.8125) internal successors, (93), 16 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:14,330 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 416 transitions. [2021-08-27 10:55:14,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-08-27 10:55:14,331 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:14,331 INFO L512 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1] [2021-08-27 10:55:14,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-08-27 10:55:14,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:14,540 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:14,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:14,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1336389577, now seen corresponding path program 11 times [2021-08-27 10:55:14,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:14,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425192918] [2021-08-27 10:55:14,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:14,541 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:14,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:14,648 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:14,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:14,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425192918] [2021-08-27 10:55:14,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425192918] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:14,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87029244] [2021-08-27 10:55:14,649 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-27 10:55:14,649 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:14,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:14,650 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:55:14,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-08-27 10:55:14,937 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-08-27 10:55:14,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:55:14,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-27 10:55:14,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:55:15,141 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:15,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87029244] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:15,141 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:55:15,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2021-08-27 10:55:15,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373820054] [2021-08-27 10:55:15,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-27 10:55:15,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:15,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-27 10:55:15,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-08-27 10:55:15,142 INFO L87 Difference]: Start difference. First operand 363 states and 416 transitions. Second operand has 15 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:15,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:15,238 INFO L93 Difference]: Finished difference Result 695 states and 804 transitions. [2021-08-27 10:55:15,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-27 10:55:15,238 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-08-27 10:55:15,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:15,240 INFO L225 Difference]: With dead ends: 695 [2021-08-27 10:55:15,240 INFO L226 Difference]: Without dead ends: 694 [2021-08-27 10:55:15,241 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 73.8ms TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-08-27 10:55:15,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2021-08-27 10:55:15,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 390. [2021-08-27 10:55:15,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 388 states have (on average 1.1546391752577319) internal successors, (448), 389 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:15,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 448 transitions. [2021-08-27 10:55:15,250 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 448 transitions. Word has length 76 [2021-08-27 10:55:15,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:15,251 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 448 transitions. [2021-08-27 10:55:15,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:15,251 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 448 transitions. [2021-08-27 10:55:15,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-08-27 10:55:15,251 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:15,251 INFO L512 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1] [2021-08-27 10:55:15,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-08-27 10:55:15,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:15,468 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:15,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:15,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1313411728, now seen corresponding path program 12 times [2021-08-27 10:55:15,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:15,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972910214] [2021-08-27 10:55:15,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:15,469 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:15,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:15,598 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 507 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:15,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:15,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972910214] [2021-08-27 10:55:15,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972910214] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:15,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339401449] [2021-08-27 10:55:15,599 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-27 10:55:15,599 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:15,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:15,600 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:55:15,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-08-27 10:55:15,909 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2021-08-27 10:55:15,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:55:15,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-27 10:55:15,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:55:16,146 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 507 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:16,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339401449] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:16,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:55:16,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-08-27 10:55:16,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847558676] [2021-08-27 10:55:16,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-27 10:55:16,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:16,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-27 10:55:16,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-08-27 10:55:16,148 INFO L87 Difference]: Start difference. First operand 390 states and 448 transitions. Second operand has 16 states, 15 states have (on average 5.466666666666667) internal successors, (82), 15 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:16,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:16,257 INFO L93 Difference]: Finished difference Result 751 states and 870 transitions. [2021-08-27 10:55:16,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-27 10:55:16,257 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.466666666666667) internal successors, (82), 15 states have internal predecessors, (82), 0 states have call successors, (0), 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 [2021-08-27 10:55:16,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:16,259 INFO L225 Difference]: With dead ends: 751 [2021-08-27 10:55:16,259 INFO L226 Difference]: Without dead ends: 750 [2021-08-27 10:55:16,259 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 80.9ms TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-08-27 10:55:16,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2021-08-27 10:55:16,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 417. [2021-08-27 10:55:16,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 415 states have (on average 1.1566265060240963) internal successors, (480), 416 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:16,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 480 transitions. [2021-08-27 10:55:16,268 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 480 transitions. Word has length 82 [2021-08-27 10:55:16,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:16,268 INFO L470 AbstractCegarLoop]: Abstraction has 417 states and 480 transitions. [2021-08-27 10:55:16,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.466666666666667) internal successors, (82), 15 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:16,268 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 480 transitions. [2021-08-27 10:55:16,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-08-27 10:55:16,269 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:16,269 INFO L512 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1] [2021-08-27 10:55:16,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-08-27 10:55:16,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:16,485 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:16,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:16,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1372652567, now seen corresponding path program 13 times [2021-08-27 10:55:16,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:16,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849593110] [2021-08-27 10:55:16,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:16,485 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:16,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:16,613 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:16,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:16,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849593110] [2021-08-27 10:55:16,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849593110] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:16,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51316591] [2021-08-27 10:55:16,614 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-27 10:55:16,614 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:16,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:16,615 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:55:16,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-08-27 10:55:16,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:16,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-27 10:55:16,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:55:17,190 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:17,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51316591] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:17,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:55:17,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2021-08-27 10:55:17,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780199479] [2021-08-27 10:55:17,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-27 10:55:17,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:17,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-27 10:55:17,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-08-27 10:55:17,192 INFO L87 Difference]: Start difference. First operand 417 states and 480 transitions. Second operand has 17 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:17,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:17,305 INFO L93 Difference]: Finished difference Result 807 states and 936 transitions. [2021-08-27 10:55:17,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-27 10:55:17,305 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-08-27 10:55:17,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:17,307 INFO L225 Difference]: With dead ends: 807 [2021-08-27 10:55:17,307 INFO L226 Difference]: Without dead ends: 806 [2021-08-27 10:55:17,307 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 90.2ms TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-08-27 10:55:17,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2021-08-27 10:55:17,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 444. [2021-08-27 10:55:17,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 442 states have (on average 1.158371040723982) internal successors, (512), 443 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:17,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 512 transitions. [2021-08-27 10:55:17,321 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 512 transitions. Word has length 88 [2021-08-27 10:55:17,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:17,321 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 512 transitions. [2021-08-27 10:55:17,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:17,322 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 512 transitions. [2021-08-27 10:55:17,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-08-27 10:55:17,322 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:17,322 INFO L512 BasicCegarLoop]: trace histogram [15, 14, 14, 11, 11, 11, 4, 4, 4, 1, 1] [2021-08-27 10:55:17,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-08-27 10:55:17,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-08-27 10:55:17,523 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:17,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:17,523 INFO L82 PathProgramCache]: Analyzing trace with hash 289561722, now seen corresponding path program 7 times [2021-08-27 10:55:17,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:17,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028653088] [2021-08-27 10:55:17,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:17,524 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:17,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:17,617 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 149 proven. 352 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-08-27 10:55:17,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:17,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028653088] [2021-08-27 10:55:17,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028653088] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:17,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705604270] [2021-08-27 10:55:17,618 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-27 10:55:17,618 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:17,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:17,621 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:55:17,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-08-27 10:55:18,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:18,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-27 10:55:18,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:55:18,232 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 149 proven. 352 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-08-27 10:55:18,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705604270] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:18,232 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:55:18,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2021-08-27 10:55:18,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257391551] [2021-08-27 10:55:18,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-27 10:55:18,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:18,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-27 10:55:18,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-08-27 10:55:18,233 INFO L87 Difference]: Start difference. First operand 444 states and 512 transitions. Second operand has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 13 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:18,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:18,271 INFO L93 Difference]: Finished difference Result 835 states and 972 transitions. [2021-08-27 10:55:18,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-27 10:55:18,281 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 13 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-08-27 10:55:18,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:18,282 INFO L225 Difference]: With dead ends: 835 [2021-08-27 10:55:18,282 INFO L226 Difference]: Without dead ends: 454 [2021-08-27 10:55:18,282 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.7ms TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-08-27 10:55:18,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2021-08-27 10:55:18,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 450. [2021-08-27 10:55:18,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 448 states have (on average 1.15625) internal successors, (518), 449 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:18,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 518 transitions. [2021-08-27 10:55:18,289 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 518 transitions. Word has length 90 [2021-08-27 10:55:18,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:18,290 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 518 transitions. [2021-08-27 10:55:18,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 13 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:18,290 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 518 transitions. [2021-08-27 10:55:18,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-27 10:55:18,290 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:18,290 INFO L512 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1] [2021-08-27 10:55:18,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-08-27 10:55:18,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-08-27 10:55:18,507 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:18,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:18,508 INFO L82 PathProgramCache]: Analyzing trace with hash 146181026, now seen corresponding path program 14 times [2021-08-27 10:55:18,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:18,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150997448] [2021-08-27 10:55:18,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:18,508 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:18,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:18,648 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 0 proven. 675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:18,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:18,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150997448] [2021-08-27 10:55:18,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150997448] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:18,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73936081] [2021-08-27 10:55:18,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 10:55:18,649 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:18,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:18,653 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:55:18,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-08-27 10:55:19,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 10:55:19,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:55:19,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 17 conjunts are in the unsatisfiable core [2021-08-27 10:55:19,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:55:19,331 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 0 proven. 675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:19,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73936081] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:19,331 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:55:19,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2021-08-27 10:55:19,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004519245] [2021-08-27 10:55:19,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-27 10:55:19,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:19,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-27 10:55:19,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-08-27 10:55:19,333 INFO L87 Difference]: Start difference. First operand 450 states and 518 transitions. Second operand has 18 states, 17 states have (on average 5.529411764705882) internal successors, (94), 17 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) [2021-08-27 10:55:19,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:19,457 INFO L93 Difference]: Finished difference Result 869 states and 1008 transitions. [2021-08-27 10:55:19,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-27 10:55:19,458 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 5.529411764705882) internal successors, (94), 17 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 94 [2021-08-27 10:55:19,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:19,460 INFO L225 Difference]: With dead ends: 869 [2021-08-27 10:55:19,460 INFO L226 Difference]: Without dead ends: 868 [2021-08-27 10:55:19,460 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 100.8ms TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-08-27 10:55:19,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2021-08-27 10:55:19,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 477. [2021-08-27 10:55:19,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 475 states have (on average 1.1578947368421053) internal successors, (550), 476 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:19,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 550 transitions. [2021-08-27 10:55:19,470 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 550 transitions. Word has length 94 [2021-08-27 10:55:19,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:19,471 INFO L470 AbstractCegarLoop]: Abstraction has 477 states and 550 transitions. [2021-08-27 10:55:19,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 5.529411764705882) internal successors, (94), 17 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) [2021-08-27 10:55:19,471 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 550 transitions. [2021-08-27 10:55:19,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-08-27 10:55:19,471 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:19,472 INFO L512 BasicCegarLoop]: trace histogram [16, 15, 15, 12, 12, 12, 4, 4, 4, 1, 1] [2021-08-27 10:55:19,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-08-27 10:55:19,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-08-27 10:55:19,685 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:19,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:19,685 INFO L82 PathProgramCache]: Analyzing trace with hash -400236045, now seen corresponding path program 8 times [2021-08-27 10:55:19,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:19,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982558967] [2021-08-27 10:55:19,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:19,685 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:19,806 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 162 proven. 420 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-08-27 10:55:19,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:19,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982558967] [2021-08-27 10:55:19,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982558967] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:19,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975445334] [2021-08-27 10:55:19,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 10:55:19,807 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:19,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:19,809 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:55:19,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-08-27 10:55:20,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 10:55:20,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:55:20,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-27 10:55:20,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:55:20,476 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 162 proven. 420 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-08-27 10:55:20,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975445334] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:20,477 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:55:20,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-08-27 10:55:20,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946954876] [2021-08-27 10:55:20,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-27 10:55:20,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:20,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-27 10:55:20,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-08-27 10:55:20,478 INFO L87 Difference]: Start difference. First operand 477 states and 550 transitions. Second operand has 15 states, 15 states have (on average 5.466666666666667) internal successors, (82), 14 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:20,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:20,525 INFO L93 Difference]: Finished difference Result 895 states and 1042 transitions. [2021-08-27 10:55:20,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-27 10:55:20,529 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.466666666666667) internal successors, (82), 14 states have internal predecessors, (82), 0 states have call successors, (0), 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 96 [2021-08-27 10:55:20,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:20,530 INFO L225 Difference]: With dead ends: 895 [2021-08-27 10:55:20,530 INFO L226 Difference]: Without dead ends: 487 [2021-08-27 10:55:20,531 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 81.4ms TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-08-27 10:55:20,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2021-08-27 10:55:20,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 483. [2021-08-27 10:55:20,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 481 states have (on average 1.155925155925156) internal successors, (556), 482 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) [2021-08-27 10:55:20,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 556 transitions. [2021-08-27 10:55:20,537 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 556 transitions. Word has length 96 [2021-08-27 10:55:20,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:20,537 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 556 transitions. [2021-08-27 10:55:20,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.466666666666667) internal successors, (82), 14 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:20,538 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 556 transitions. [2021-08-27 10:55:20,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-08-27 10:55:20,538 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:20,538 INFO L512 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 1, 1] [2021-08-27 10:55:20,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-08-27 10:55:20,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:20,747 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:20,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:20,747 INFO L82 PathProgramCache]: Analyzing trace with hash -143151973, now seen corresponding path program 15 times [2021-08-27 10:55:20,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:20,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590421876] [2021-08-27 10:55:20,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:20,747 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:20,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:20,909 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 0 proven. 768 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:20,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:20,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590421876] [2021-08-27 10:55:20,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590421876] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:20,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551010162] [2021-08-27 10:55:20,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 10:55:20,910 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:20,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:20,913 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:55:20,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-08-27 10:55:21,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2021-08-27 10:55:21,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:55:21,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-27 10:55:21,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:55:21,668 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 0 proven. 768 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:21,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551010162] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:21,668 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:55:21,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2021-08-27 10:55:21,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602304961] [2021-08-27 10:55:21,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-27 10:55:21,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:21,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-27 10:55:21,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-08-27 10:55:21,670 INFO L87 Difference]: Start difference. First operand 483 states and 556 transitions. Second operand has 19 states, 18 states have (on average 5.555555555555555) internal successors, (100), 18 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:21,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:21,770 INFO L93 Difference]: Finished difference Result 931 states and 1080 transitions. [2021-08-27 10:55:21,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-27 10:55:21,770 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 5.555555555555555) internal successors, (100), 18 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-08-27 10:55:21,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:21,772 INFO L225 Difference]: With dead ends: 931 [2021-08-27 10:55:21,772 INFO L226 Difference]: Without dead ends: 930 [2021-08-27 10:55:21,772 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 123.2ms TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-08-27 10:55:21,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2021-08-27 10:55:21,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 510. [2021-08-27 10:55:21,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 508 states have (on average 1.1574803149606299) internal successors, (588), 509 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:21,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 588 transitions. [2021-08-27 10:55:21,781 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 588 transitions. Word has length 100 [2021-08-27 10:55:21,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:21,782 INFO L470 AbstractCegarLoop]: Abstraction has 510 states and 588 transitions. [2021-08-27 10:55:21,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 5.555555555555555) internal successors, (100), 18 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:21,782 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 588 transitions. [2021-08-27 10:55:21,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-08-27 10:55:21,783 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:21,783 INFO L512 BasicCegarLoop]: trace histogram [17, 16, 16, 13, 13, 13, 4, 4, 4, 1, 1] [2021-08-27 10:55:21,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-08-27 10:55:22,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-08-27 10:55:22,003 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:22,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:22,003 INFO L82 PathProgramCache]: Analyzing trace with hash 723626156, now seen corresponding path program 9 times [2021-08-27 10:55:22,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:22,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706586670] [2021-08-27 10:55:22,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:22,003 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:22,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:22,119 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 175 proven. 494 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-08-27 10:55:22,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:22,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706586670] [2021-08-27 10:55:22,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706586670] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:22,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092136762] [2021-08-27 10:55:22,119 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 10:55:22,119 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:22,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:22,120 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:55:22,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-08-27 10:55:22,617 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-08-27 10:55:22,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:55:22,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-27 10:55:22,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:55:22,922 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 285 proven. 59 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2021-08-27 10:55:22,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092136762] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:22,922 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:55:22,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7] total 22 [2021-08-27 10:55:22,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678908406] [2021-08-27 10:55:22,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-08-27 10:55:22,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:22,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-08-27 10:55:22,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-08-27 10:55:22,923 INFO L87 Difference]: Start difference. First operand 510 states and 588 transitions. Second operand has 22 states, 22 states have (on average 5.863636363636363) internal successors, (129), 22 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:23,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:23,013 INFO L93 Difference]: Finished difference Result 1125 states and 1335 transitions. [2021-08-27 10:55:23,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-27 10:55:23,013 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.863636363636363) internal successors, (129), 22 states have internal predecessors, (129), 0 states have call successors, (0), 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 102 [2021-08-27 10:55:23,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:23,022 INFO L225 Difference]: With dead ends: 1125 [2021-08-27 10:55:23,023 INFO L226 Difference]: Without dead ends: 690 [2021-08-27 10:55:23,023 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 152.4ms TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-08-27 10:55:23,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2021-08-27 10:55:23,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 678. [2021-08-27 10:55:23,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 676 states have (on average 1.1553254437869822) internal successors, (781), 677 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:23,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 781 transitions. [2021-08-27 10:55:23,032 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 781 transitions. Word has length 102 [2021-08-27 10:55:23,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:23,032 INFO L470 AbstractCegarLoop]: Abstraction has 678 states and 781 transitions. [2021-08-27 10:55:23,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.863636363636363) internal successors, (129), 22 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:23,033 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 781 transitions. [2021-08-27 10:55:23,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-08-27 10:55:23,033 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:23,033 INFO L512 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 1, 1] [2021-08-27 10:55:23,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-08-27 10:55:23,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:23,249 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:23,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:23,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1288728276, now seen corresponding path program 16 times [2021-08-27 10:55:23,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:23,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223286890] [2021-08-27 10:55:23,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:23,250 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:23,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:23,428 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 0 proven. 867 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:23,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:23,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223286890] [2021-08-27 10:55:23,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223286890] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:23,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682660217] [2021-08-27 10:55:23,429 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-27 10:55:23,429 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:23,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:23,437 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:55:23,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-08-27 10:55:23,970 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-27 10:55:23,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:55:23,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-27 10:55:23,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:55:24,273 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 0 proven. 867 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:24,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682660217] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:24,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:55:24,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-08-27 10:55:24,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729432038] [2021-08-27 10:55:24,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-08-27 10:55:24,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:24,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-08-27 10:55:24,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-08-27 10:55:24,274 INFO L87 Difference]: Start difference. First operand 678 states and 781 transitions. Second operand has 20 states, 19 states have (on average 5.578947368421052) internal successors, (106), 19 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:24,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:24,426 INFO L93 Difference]: Finished difference Result 1317 states and 1528 transitions. [2021-08-27 10:55:24,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-27 10:55:24,427 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 5.578947368421052) internal successors, (106), 19 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-08-27 10:55:24,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:24,430 INFO L225 Difference]: With dead ends: 1317 [2021-08-27 10:55:24,430 INFO L226 Difference]: Without dead ends: 1316 [2021-08-27 10:55:24,431 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 129.4ms TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-08-27 10:55:24,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2021-08-27 10:55:24,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 717. [2021-08-27 10:55:24,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 715 states have (on average 1.1566433566433567) internal successors, (827), 716 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:24,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 827 transitions. [2021-08-27 10:55:24,445 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 827 transitions. Word has length 106 [2021-08-27 10:55:24,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:24,446 INFO L470 AbstractCegarLoop]: Abstraction has 717 states and 827 transitions. [2021-08-27 10:55:24,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 5.578947368421052) internal successors, (106), 19 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:24,446 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 827 transitions. [2021-08-27 10:55:24,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-08-27 10:55:24,447 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:24,447 INFO L512 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 1, 1] [2021-08-27 10:55:24,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-08-27 10:55:24,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-08-27 10:55:24,655 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:24,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:24,655 INFO L82 PathProgramCache]: Analyzing trace with hash -2142051763, now seen corresponding path program 17 times [2021-08-27 10:55:24,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:24,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937884550] [2021-08-27 10:55:24,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:24,655 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:24,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:24,850 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 0 proven. 972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:24,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:24,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937884550] [2021-08-27 10:55:24,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937884550] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:24,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471663660] [2021-08-27 10:55:24,851 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-27 10:55:24,851 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:24,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:24,853 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:55:24,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-08-27 10:55:25,462 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2021-08-27 10:55:25,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:55:25,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 20 conjunts are in the unsatisfiable core [2021-08-27 10:55:25,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:55:25,758 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 0 proven. 972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:25,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471663660] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:25,758 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:55:25,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-08-27 10:55:25,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997263965] [2021-08-27 10:55:25,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-27 10:55:25,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:25,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-27 10:55:25,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-08-27 10:55:25,759 INFO L87 Difference]: Start difference. First operand 717 states and 827 transitions. Second operand has 21 states, 20 states have (on average 5.6) internal successors, (112), 20 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:25,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:25,891 INFO L93 Difference]: Finished difference Result 1397 states and 1622 transitions. [2021-08-27 10:55:25,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-27 10:55:25,891 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 5.6) internal successors, (112), 20 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2021-08-27 10:55:25,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:25,894 INFO L225 Difference]: With dead ends: 1397 [2021-08-27 10:55:25,894 INFO L226 Difference]: Without dead ends: 1396 [2021-08-27 10:55:25,895 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 150.6ms TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-08-27 10:55:25,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1396 states. [2021-08-27 10:55:25,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1396 to 756. [2021-08-27 10:55:25,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 754 states have (on average 1.1578249336870026) internal successors, (873), 755 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:25,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 873 transitions. [2021-08-27 10:55:25,908 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 873 transitions. Word has length 112 [2021-08-27 10:55:25,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:25,909 INFO L470 AbstractCegarLoop]: Abstraction has 756 states and 873 transitions. [2021-08-27 10:55:25,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 5.6) internal successors, (112), 20 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:25,909 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 873 transitions. [2021-08-27 10:55:25,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-08-27 10:55:25,910 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:25,910 INFO L512 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 1, 1] [2021-08-27 10:55:25,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-08-27 10:55:26,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:26,125 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:26,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:26,125 INFO L82 PathProgramCache]: Analyzing trace with hash -138078458, now seen corresponding path program 18 times [2021-08-27 10:55:26,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:26,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722968002] [2021-08-27 10:55:26,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:26,125 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:26,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:26,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 0 proven. 1083 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:26,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:26,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722968002] [2021-08-27 10:55:26,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722968002] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:26,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095206847] [2021-08-27 10:55:26,331 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-27 10:55:26,331 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:26,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:26,332 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:55:26,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-08-27 10:55:26,946 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2021-08-27 10:55:26,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:55:26,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 21 conjunts are in the unsatisfiable core [2021-08-27 10:55:26,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:55:27,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 0 proven. 1083 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:27,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095206847] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:27,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:55:27,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2021-08-27 10:55:27,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079243688] [2021-08-27 10:55:27,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-08-27 10:55:27,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:27,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-08-27 10:55:27,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-08-27 10:55:27,265 INFO L87 Difference]: Start difference. First operand 756 states and 873 transitions. Second operand has 22 states, 21 states have (on average 5.619047619047619) internal successors, (118), 21 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:27,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:27,386 INFO L93 Difference]: Finished difference Result 1477 states and 1716 transitions. [2021-08-27 10:55:27,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-27 10:55:27,388 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 5.619047619047619) internal successors, (118), 21 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2021-08-27 10:55:27,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:27,391 INFO L225 Difference]: With dead ends: 1477 [2021-08-27 10:55:27,391 INFO L226 Difference]: Without dead ends: 1476 [2021-08-27 10:55:27,392 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 161.7ms TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-08-27 10:55:27,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2021-08-27 10:55:27,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 795. [2021-08-27 10:55:27,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 793 states have (on average 1.158890290037831) internal successors, (919), 794 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:27,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 919 transitions. [2021-08-27 10:55:27,403 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 919 transitions. Word has length 118 [2021-08-27 10:55:27,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:27,403 INFO L470 AbstractCegarLoop]: Abstraction has 795 states and 919 transitions. [2021-08-27 10:55:27,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 5.619047619047619) internal successors, (118), 21 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:27,403 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 919 transitions. [2021-08-27 10:55:27,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-08-27 10:55:27,404 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:27,404 INFO L512 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 1, 1] [2021-08-27 10:55:27,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-08-27 10:55:27,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:27,622 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:27,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:27,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1876878081, now seen corresponding path program 19 times [2021-08-27 10:55:27,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:27,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802751444] [2021-08-27 10:55:27,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:27,623 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:27,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:27,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 1200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:27,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:27,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802751444] [2021-08-27 10:55:27,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802751444] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:27,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965783868] [2021-08-27 10:55:27,839 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-27 10:55:27,839 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:27,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:27,840 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:55:27,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-08-27 10:55:28,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:28,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 22 conjunts are in the unsatisfiable core [2021-08-27 10:55:28,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:55:28,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 1200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:28,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965783868] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:28,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:55:28,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2021-08-27 10:55:28,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493462710] [2021-08-27 10:55:28,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-27 10:55:28,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:28,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-27 10:55:28,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-08-27 10:55:28,826 INFO L87 Difference]: Start difference. First operand 795 states and 919 transitions. Second operand has 23 states, 22 states have (on average 5.636363636363637) internal successors, (124), 22 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) [2021-08-27 10:55:28,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:28,962 INFO L93 Difference]: Finished difference Result 1557 states and 1810 transitions. [2021-08-27 10:55:28,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-08-27 10:55:28,962 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 5.636363636363637) internal successors, (124), 22 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 124 [2021-08-27 10:55:28,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:28,966 INFO L225 Difference]: With dead ends: 1557 [2021-08-27 10:55:28,966 INFO L226 Difference]: Without dead ends: 1556 [2021-08-27 10:55:28,966 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 170.2ms TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-08-27 10:55:28,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2021-08-27 10:55:28,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 834. [2021-08-27 10:55:28,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 832 states have (on average 1.1598557692307692) internal successors, (965), 833 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:28,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 965 transitions. [2021-08-27 10:55:28,985 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 965 transitions. Word has length 124 [2021-08-27 10:55:28,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:28,986 INFO L470 AbstractCegarLoop]: Abstraction has 834 states and 965 transitions. [2021-08-27 10:55:28,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 5.636363636363637) internal successors, (124), 22 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) [2021-08-27 10:55:28,986 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 965 transitions. [2021-08-27 10:55:28,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-08-27 10:55:28,986 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:28,987 INFO L512 BasicCegarLoop]: trace histogram [21, 20, 20, 15, 15, 15, 6, 6, 6, 1, 1] [2021-08-27 10:55:29,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-08-27 10:55:29,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:29,201 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:29,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:29,201 INFO L82 PathProgramCache]: Analyzing trace with hash -637299836, now seen corresponding path program 10 times [2021-08-27 10:55:29,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:29,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900831939] [2021-08-27 10:55:29,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:29,201 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:29,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:29,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1060 backedges. 325 proven. 660 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-08-27 10:55:29,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:29,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900831939] [2021-08-27 10:55:29,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900831939] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:29,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732683232] [2021-08-27 10:55:29,337 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-27 10:55:29,337 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:29,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:29,338 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) [2021-08-27 10:55:29,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-08-27 10:55:30,063 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-27 10:55:30,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:55:30,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 17 conjunts are in the unsatisfiable core [2021-08-27 10:55:30,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:55:30,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1060 backedges. 325 proven. 660 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-08-27 10:55:30,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732683232] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:30,388 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:55:30,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2021-08-27 10:55:30,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913005757] [2021-08-27 10:55:30,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-27 10:55:30,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:30,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-27 10:55:30,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-08-27 10:55:30,389 INFO L87 Difference]: Start difference. First operand 834 states and 965 transitions. Second operand has 18 states, 18 states have (on average 5.555555555555555) internal successors, (100), 17 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:30,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:30,443 INFO L93 Difference]: Finished difference Result 1591 states and 1854 transitions. [2021-08-27 10:55:30,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-27 10:55:30,444 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.555555555555555) internal successors, (100), 17 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2021-08-27 10:55:30,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:30,454 INFO L225 Difference]: With dead ends: 1591 [2021-08-27 10:55:30,454 INFO L226 Difference]: Without dead ends: 844 [2021-08-27 10:55:30,455 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 95.9ms TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-08-27 10:55:30,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2021-08-27 10:55:30,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 840. [2021-08-27 10:55:30,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 838 states have (on average 1.1587112171837708) internal successors, (971), 839 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:30,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 971 transitions. [2021-08-27 10:55:30,468 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 971 transitions. Word has length 126 [2021-08-27 10:55:30,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:30,469 INFO L470 AbstractCegarLoop]: Abstraction has 840 states and 971 transitions. [2021-08-27 10:55:30,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.555555555555555) internal successors, (100), 17 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:30,469 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 971 transitions. [2021-08-27 10:55:30,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-08-27 10:55:30,470 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:30,470 INFO L512 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 1, 1] [2021-08-27 10:55:30,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-08-27 10:55:30,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-08-27 10:55:30,692 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:30,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:30,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1721041976, now seen corresponding path program 20 times [2021-08-27 10:55:30,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:30,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146144033] [2021-08-27 10:55:30,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:30,692 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:30,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:30,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1323 backedges. 0 proven. 1323 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:30,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:30,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146144033] [2021-08-27 10:55:30,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146144033] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:30,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105815491] [2021-08-27 10:55:30,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 10:55:30,922 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:30,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:30,923 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) [2021-08-27 10:55:30,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-08-27 10:55:31,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 10:55:31,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:55:31,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 23 conjunts are in the unsatisfiable core [2021-08-27 10:55:31,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:55:32,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1323 backedges. 0 proven. 1323 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:32,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105815491] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:32,010 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:55:32,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-08-27 10:55:32,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884932211] [2021-08-27 10:55:32,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-08-27 10:55:32,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:32,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-08-27 10:55:32,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-08-27 10:55:32,012 INFO L87 Difference]: Start difference. First operand 840 states and 971 transitions. Second operand has 24 states, 23 states have (on average 5.6521739130434785) internal successors, (130), 23 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:32,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:32,181 INFO L93 Difference]: Finished difference Result 1643 states and 1910 transitions. [2021-08-27 10:55:32,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-08-27 10:55:32,181 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.6521739130434785) internal successors, (130), 23 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-08-27 10:55:32,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:32,185 INFO L225 Difference]: With dead ends: 1643 [2021-08-27 10:55:32,185 INFO L226 Difference]: Without dead ends: 1642 [2021-08-27 10:55:32,185 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 184.2ms TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-08-27 10:55:32,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2021-08-27 10:55:32,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 879. [2021-08-27 10:55:32,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 877 states have (on average 1.1596351197263397) internal successors, (1017), 878 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:32,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1017 transitions. [2021-08-27 10:55:32,197 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1017 transitions. Word has length 130 [2021-08-27 10:55:32,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:32,197 INFO L470 AbstractCegarLoop]: Abstraction has 879 states and 1017 transitions. [2021-08-27 10:55:32,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.6521739130434785) internal successors, (130), 23 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:32,198 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1017 transitions. [2021-08-27 10:55:32,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-08-27 10:55:32,198 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:32,198 INFO L512 BasicCegarLoop]: trace histogram [22, 21, 21, 16, 16, 16, 6, 6, 6, 1, 1] [2021-08-27 10:55:32,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-08-27 10:55:32,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-08-27 10:55:32,417 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:32,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:32,417 INFO L82 PathProgramCache]: Analyzing trace with hash -484798339, now seen corresponding path program 11 times [2021-08-27 10:55:32,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:32,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429128597] [2021-08-27 10:55:32,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:32,418 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:32,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:32,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 346 proven. 752 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-08-27 10:55:32,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:32,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429128597] [2021-08-27 10:55:32,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429128597] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:32,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053805939] [2021-08-27 10:55:32,576 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-27 10:55:32,577 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:32,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:32,577 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) [2021-08-27 10:55:32,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-08-27 10:55:33,363 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-08-27 10:55:33,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:55:33,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-27 10:55:33,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:55:33,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 346 proven. 752 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-08-27 10:55:33,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053805939] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:33,655 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:55:33,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-08-27 10:55:33,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256973447] [2021-08-27 10:55:33,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-27 10:55:33,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:33,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-27 10:55:33,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-08-27 10:55:33,657 INFO L87 Difference]: Start difference. First operand 879 states and 1017 transitions. Second operand has 19 states, 19 states have (on average 5.578947368421052) internal successors, (106), 18 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:33,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:33,709 INFO L93 Difference]: Finished difference Result 1675 states and 1952 transitions. [2021-08-27 10:55:33,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-27 10:55:33,709 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.578947368421052) internal successors, (106), 18 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-08-27 10:55:33,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:33,711 INFO L225 Difference]: With dead ends: 1675 [2021-08-27 10:55:33,711 INFO L226 Difference]: Without dead ends: 889 [2021-08-27 10:55:33,711 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 116.7ms TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-08-27 10:55:33,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2021-08-27 10:55:33,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 885. [2021-08-27 10:55:33,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 883 states have (on average 1.1585503963759909) internal successors, (1023), 884 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:33,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1023 transitions. [2021-08-27 10:55:33,722 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1023 transitions. Word has length 132 [2021-08-27 10:55:33,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:33,722 INFO L470 AbstractCegarLoop]: Abstraction has 885 states and 1023 transitions. [2021-08-27 10:55:33,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.578947368421052) internal successors, (106), 18 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:33,722 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1023 transitions. [2021-08-27 10:55:33,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-08-27 10:55:33,723 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:33,723 INFO L512 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 1, 1] [2021-08-27 10:55:33,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-08-27 10:55:33,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:33,939 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:33,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:33,939 INFO L82 PathProgramCache]: Analyzing trace with hash -511517519, now seen corresponding path program 21 times [2021-08-27 10:55:33,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:33,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203518072] [2021-08-27 10:55:33,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:33,940 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:33,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:34,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:34,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:34,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203518072] [2021-08-27 10:55:34,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203518072] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:34,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562842093] [2021-08-27 10:55:34,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 10:55:34,189 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:34,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:34,189 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) [2021-08-27 10:55:34,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-08-27 10:55:35,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2021-08-27 10:55:35,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:55:35,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 24 conjunts are in the unsatisfiable core [2021-08-27 10:55:35,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:55:35,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:35,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562842093] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:35,366 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:55:35,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-08-27 10:55:35,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902045413] [2021-08-27 10:55:35,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-27 10:55:35,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:35,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-27 10:55:35,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-08-27 10:55:35,367 INFO L87 Difference]: Start difference. First operand 885 states and 1023 transitions. Second operand has 25 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:35,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:35,532 INFO L93 Difference]: Finished difference Result 1729 states and 2010 transitions. [2021-08-27 10:55:35,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-08-27 10:55:35,533 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2021-08-27 10:55:35,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:35,536 INFO L225 Difference]: With dead ends: 1729 [2021-08-27 10:55:35,536 INFO L226 Difference]: Without dead ends: 1728 [2021-08-27 10:55:35,537 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 201.5ms TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-08-27 10:55:35,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2021-08-27 10:55:35,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 924. [2021-08-27 10:55:35,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 922 states have (on average 1.1594360086767896) internal successors, (1069), 923 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:35,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1069 transitions. [2021-08-27 10:55:35,553 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1069 transitions. Word has length 136 [2021-08-27 10:55:35,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:35,554 INFO L470 AbstractCegarLoop]: Abstraction has 924 states and 1069 transitions. [2021-08-27 10:55:35,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:35,554 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1069 transitions. [2021-08-27 10:55:35,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-08-27 10:55:35,554 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:35,555 INFO L512 BasicCegarLoop]: trace histogram [23, 22, 22, 17, 17, 17, 6, 6, 6, 1, 1] [2021-08-27 10:55:35,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-08-27 10:55:35,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-08-27 10:55:35,761 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:35,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:35,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1509174966, now seen corresponding path program 12 times [2021-08-27 10:55:35,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:35,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944454242] [2021-08-27 10:55:35,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:35,761 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:35,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:35,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1292 backedges. 367 proven. 850 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-08-27 10:55:35,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:35,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944454242] [2021-08-27 10:55:35,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944454242] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:35,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050017584] [2021-08-27 10:55:35,932 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-27 10:55:35,932 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:35,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:35,933 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:55:35,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-08-27 10:55:36,813 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-08-27 10:55:36,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:55:36,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-27 10:55:36,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:55:37,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1292 backedges. 509 proven. 123 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2021-08-27 10:55:37,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050017584] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:37,227 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:55:37,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 9] total 28 [2021-08-27 10:55:37,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506152973] [2021-08-27 10:55:37,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-08-27 10:55:37,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:37,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-08-27 10:55:37,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-08-27 10:55:37,229 INFO L87 Difference]: Start difference. First operand 924 states and 1069 transitions. Second operand has 28 states, 28 states have (on average 5.892857142857143) internal successors, (165), 28 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:37,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:37,326 INFO L93 Difference]: Finished difference Result 1981 states and 2341 transitions. [2021-08-27 10:55:37,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-27 10:55:37,326 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.892857142857143) internal successors, (165), 28 states have internal predecessors, (165), 0 states have call successors, (0), 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 138 [2021-08-27 10:55:37,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:37,328 INFO L225 Difference]: With dead ends: 1981 [2021-08-27 10:55:37,328 INFO L226 Difference]: Without dead ends: 1156 [2021-08-27 10:55:37,329 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 251.8ms TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-08-27 10:55:37,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2021-08-27 10:55:37,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 1140. [2021-08-27 10:55:37,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 1138 states have (on average 1.1581722319859402) internal successors, (1318), 1139 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:37,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1318 transitions. [2021-08-27 10:55:37,341 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1318 transitions. Word has length 138 [2021-08-27 10:55:37,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:37,341 INFO L470 AbstractCegarLoop]: Abstraction has 1140 states and 1318 transitions. [2021-08-27 10:55:37,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.892857142857143) internal successors, (165), 28 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:37,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1318 transitions. [2021-08-27 10:55:37,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-08-27 10:55:37,342 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:37,342 INFO L512 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 1, 1] [2021-08-27 10:55:37,361 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2021-08-27 10:55:37,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-08-27 10:55:37,543 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:37,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:37,543 INFO L82 PathProgramCache]: Analyzing trace with hash -109005206, now seen corresponding path program 22 times [2021-08-27 10:55:37,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:37,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600761493] [2021-08-27 10:55:37,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:37,543 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:37,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:37,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1587 backedges. 0 proven. 1587 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:37,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:37,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600761493] [2021-08-27 10:55:37,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600761493] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:37,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372475876] [2021-08-27 10:55:37,846 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-27 10:55:37,847 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:37,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:37,847 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:55:37,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-08-27 10:55:38,774 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-27 10:55:38,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:55:38,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 25 conjunts are in the unsatisfiable core [2021-08-27 10:55:38,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:55:39,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1587 backedges. 0 proven. 1587 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:39,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372475876] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:39,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:55:39,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2021-08-27 10:55:39,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336272825] [2021-08-27 10:55:39,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-08-27 10:55:39,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:39,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-08-27 10:55:39,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-08-27 10:55:39,119 INFO L87 Difference]: Start difference. First operand 1140 states and 1318 transitions. Second operand has 26 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:39,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:39,281 INFO L93 Difference]: Finished difference Result 2235 states and 2598 transitions. [2021-08-27 10:55:39,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-27 10:55:39,281 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2021-08-27 10:55:39,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:39,286 INFO L225 Difference]: With dead ends: 2235 [2021-08-27 10:55:39,286 INFO L226 Difference]: Without dead ends: 2234 [2021-08-27 10:55:39,286 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 246.8ms TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-08-27 10:55:39,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2234 states. [2021-08-27 10:55:39,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2234 to 1191. [2021-08-27 10:55:39,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 1189 states have (on average 1.1589571068124473) internal successors, (1378), 1190 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:39,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1378 transitions. [2021-08-27 10:55:39,312 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1378 transitions. Word has length 142 [2021-08-27 10:55:39,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:39,312 INFO L470 AbstractCegarLoop]: Abstraction has 1191 states and 1378 transitions. [2021-08-27 10:55:39,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:39,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1378 transitions. [2021-08-27 10:55:39,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-08-27 10:55:39,313 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:39,313 INFO L512 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 1, 1] [2021-08-27 10:55:39,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2021-08-27 10:55:39,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-08-27 10:55:39,529 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:39,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:39,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1034378909, now seen corresponding path program 23 times [2021-08-27 10:55:39,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:39,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889167546] [2021-08-27 10:55:39,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:39,529 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:39,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:39,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1728 backedges. 0 proven. 1728 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:39,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:39,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889167546] [2021-08-27 10:55:39,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889167546] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:39,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482426969] [2021-08-27 10:55:39,823 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-27 10:55:39,824 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:39,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:39,825 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:55:39,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-08-27 10:55:40,842 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2021-08-27 10:55:40,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:55:40,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 26 conjunts are in the unsatisfiable core [2021-08-27 10:55:40,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:55:41,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1728 backedges. 0 proven. 1728 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:41,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482426969] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:41,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:55:41,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-08-27 10:55:41,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991461966] [2021-08-27 10:55:41,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-27 10:55:41,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:41,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-27 10:55:41,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-08-27 10:55:41,232 INFO L87 Difference]: Start difference. First operand 1191 states and 1378 transitions. Second operand has 27 states, 26 states have (on average 5.6923076923076925) internal successors, (148), 26 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:41,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:41,398 INFO L93 Difference]: Finished difference Result 2339 states and 2720 transitions. [2021-08-27 10:55:41,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-27 10:55:41,398 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 5.6923076923076925) internal successors, (148), 26 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2021-08-27 10:55:41,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:41,403 INFO L225 Difference]: With dead ends: 2339 [2021-08-27 10:55:41,404 INFO L226 Difference]: Without dead ends: 2338 [2021-08-27 10:55:41,404 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 240.2ms TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-08-27 10:55:41,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2338 states. [2021-08-27 10:55:41,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2338 to 1242. [2021-08-27 10:55:41,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1242 states, 1240 states have (on average 1.1596774193548387) internal successors, (1438), 1241 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:41,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 1438 transitions. [2021-08-27 10:55:41,424 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 1438 transitions. Word has length 148 [2021-08-27 10:55:41,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:41,424 INFO L470 AbstractCegarLoop]: Abstraction has 1242 states and 1438 transitions. [2021-08-27 10:55:41,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 5.6923076923076925) internal successors, (148), 26 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:41,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 1438 transitions. [2021-08-27 10:55:41,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-08-27 10:55:41,425 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:41,425 INFO L512 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 1, 1] [2021-08-27 10:55:41,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-08-27 10:55:41,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:41,641 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:41,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:41,641 INFO L82 PathProgramCache]: Analyzing trace with hash 872983964, now seen corresponding path program 24 times [2021-08-27 10:55:41,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:41,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123386410] [2021-08-27 10:55:41,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:41,641 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:41,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1875 backedges. 0 proven. 1875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:41,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:41,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123386410] [2021-08-27 10:55:41,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123386410] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:41,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96624688] [2021-08-27 10:55:41,927 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-27 10:55:41,927 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:41,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:41,929 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:55:41,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-08-27 10:55:42,988 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2021-08-27 10:55:42,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:55:42,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 27 conjunts are in the unsatisfiable core [2021-08-27 10:55:42,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:55:43,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1875 backedges. 0 proven. 1875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:43,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96624688] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:43,358 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:55:43,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2021-08-27 10:55:43,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905448687] [2021-08-27 10:55:43,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-08-27 10:55:43,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:43,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-08-27 10:55:43,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-08-27 10:55:43,359 INFO L87 Difference]: Start difference. First operand 1242 states and 1438 transitions. Second operand has 28 states, 27 states have (on average 5.703703703703703) internal successors, (154), 27 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:43,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:43,533 INFO L93 Difference]: Finished difference Result 2443 states and 2842 transitions. [2021-08-27 10:55:43,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-27 10:55:43,534 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 5.703703703703703) internal successors, (154), 27 states have internal predecessors, (154), 0 states have call successors, (0), 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 154 [2021-08-27 10:55:43,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:43,539 INFO L225 Difference]: With dead ends: 2443 [2021-08-27 10:55:43,539 INFO L226 Difference]: Without dead ends: 2442 [2021-08-27 10:55:43,539 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 232.8ms TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-08-27 10:55:43,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2442 states. [2021-08-27 10:55:43,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 1293. [2021-08-27 10:55:43,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1293 states, 1291 states have (on average 1.1603408210689388) internal successors, (1498), 1292 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:43,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 1498 transitions. [2021-08-27 10:55:43,559 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 1498 transitions. Word has length 154 [2021-08-27 10:55:43,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:43,559 INFO L470 AbstractCegarLoop]: Abstraction has 1293 states and 1498 transitions. [2021-08-27 10:55:43,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 5.703703703703703) internal successors, (154), 27 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:43,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 1498 transitions. [2021-08-27 10:55:43,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-08-27 10:55:43,560 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:43,561 INFO L512 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 1, 1] [2021-08-27 10:55:43,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-08-27 10:55:43,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:43,777 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:43,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:43,777 INFO L82 PathProgramCache]: Analyzing trace with hash 868412181, now seen corresponding path program 25 times [2021-08-27 10:55:43,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:43,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849423816] [2021-08-27 10:55:43,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:43,777 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:43,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:44,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 0 proven. 2028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:44,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:44,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849423816] [2021-08-27 10:55:44,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849423816] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:44,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603157206] [2021-08-27 10:55:44,090 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-27 10:55:44,090 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:44,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:44,098 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:55:44,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-08-27 10:55:45,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:45,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 28 conjunts are in the unsatisfiable core [2021-08-27 10:55:45,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:55:45,635 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 0 proven. 2028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:45,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603157206] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:45,636 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:55:45,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2021-08-27 10:55:45,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956200626] [2021-08-27 10:55:45,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-08-27 10:55:45,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:45,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-08-27 10:55:45,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2021-08-27 10:55:45,637 INFO L87 Difference]: Start difference. First operand 1293 states and 1498 transitions. Second operand has 29 states, 28 states have (on average 5.714285714285714) internal successors, (160), 28 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:45,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:45,810 INFO L93 Difference]: Finished difference Result 2547 states and 2964 transitions. [2021-08-27 10:55:45,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-08-27 10:55:45,810 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 5.714285714285714) internal successors, (160), 28 states have internal predecessors, (160), 0 states have call successors, (0), 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 160 [2021-08-27 10:55:45,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:45,813 INFO L225 Difference]: With dead ends: 2547 [2021-08-27 10:55:45,814 INFO L226 Difference]: Without dead ends: 2546 [2021-08-27 10:55:45,814 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 253.8ms TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2021-08-27 10:55:45,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2546 states. [2021-08-27 10:55:45,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2546 to 1344. [2021-08-27 10:55:45,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1344 states, 1342 states have (on average 1.1609538002980626) internal successors, (1558), 1343 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:45,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 1558 transitions. [2021-08-27 10:55:45,830 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 1558 transitions. Word has length 160 [2021-08-27 10:55:45,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:45,830 INFO L470 AbstractCegarLoop]: Abstraction has 1344 states and 1558 transitions. [2021-08-27 10:55:45,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 5.714285714285714) internal successors, (160), 28 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:45,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 1558 transitions. [2021-08-27 10:55:45,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-08-27 10:55:45,831 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:45,831 INFO L512 BasicCegarLoop]: trace histogram [27, 26, 26, 19, 19, 19, 8, 8, 8, 1, 1] [2021-08-27 10:55:45,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-08-27 10:55:46,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-08-27 10:55:46,057 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:46,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:46,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1355830898, now seen corresponding path program 13 times [2021-08-27 10:55:46,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:46,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936271850] [2021-08-27 10:55:46,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:46,057 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:46,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:46,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1776 backedges. 565 proven. 1064 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-08-27 10:55:46,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:46,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936271850] [2021-08-27 10:55:46,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936271850] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:46,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908301845] [2021-08-27 10:55:46,254 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-27 10:55:46,254 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:46,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:46,257 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:55:46,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-08-27 10:55:47,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:47,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 21 conjunts are in the unsatisfiable core [2021-08-27 10:55:47,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:55:47,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1776 backedges. 565 proven. 1064 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-08-27 10:55:47,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908301845] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:47,847 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:55:47,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2021-08-27 10:55:47,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568827035] [2021-08-27 10:55:47,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-08-27 10:55:47,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:47,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-08-27 10:55:47,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-08-27 10:55:47,848 INFO L87 Difference]: Start difference. First operand 1344 states and 1558 transitions. Second operand has 22 states, 22 states have (on average 5.636363636363637) internal successors, (124), 21 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) [2021-08-27 10:55:47,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:47,917 INFO L93 Difference]: Finished difference Result 2587 states and 3016 transitions. [2021-08-27 10:55:47,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-27 10:55:47,918 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.636363636363637) internal successors, (124), 21 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 162 [2021-08-27 10:55:47,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:47,920 INFO L225 Difference]: With dead ends: 2587 [2021-08-27 10:55:47,920 INFO L226 Difference]: Without dead ends: 1354 [2021-08-27 10:55:47,921 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 138.8ms TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-08-27 10:55:47,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2021-08-27 10:55:47,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1350. [2021-08-27 10:55:47,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1348 states have (on average 1.1602373887240356) internal successors, (1564), 1349 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:47,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 1564 transitions. [2021-08-27 10:55:47,935 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 1564 transitions. Word has length 162 [2021-08-27 10:55:47,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:47,935 INFO L470 AbstractCegarLoop]: Abstraction has 1350 states and 1564 transitions. [2021-08-27 10:55:47,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.636363636363637) internal successors, (124), 21 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) [2021-08-27 10:55:47,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 1564 transitions. [2021-08-27 10:55:47,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-08-27 10:55:47,936 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:47,936 INFO L512 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 1, 1] [2021-08-27 10:55:47,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-08-27 10:55:48,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-08-27 10:55:48,153 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:48,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:48,153 INFO L82 PathProgramCache]: Analyzing trace with hash -588420658, now seen corresponding path program 26 times [2021-08-27 10:55:48,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:48,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806218052] [2021-08-27 10:55:48,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:48,153 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:48,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:48,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2187 backedges. 0 proven. 2187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:48,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:48,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806218052] [2021-08-27 10:55:48,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806218052] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:48,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961984907] [2021-08-27 10:55:48,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 10:55:48,505 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:48,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:48,506 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:55:48,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-08-27 10:55:49,709 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 10:55:49,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:55:49,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 29 conjunts are in the unsatisfiable core [2021-08-27 10:55:49,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:55:50,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2187 backedges. 0 proven. 2187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:50,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961984907] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:50,157 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:55:50,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2021-08-27 10:55:50,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935727093] [2021-08-27 10:55:50,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-08-27 10:55:50,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:50,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-08-27 10:55:50,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2021-08-27 10:55:50,159 INFO L87 Difference]: Start difference. First operand 1350 states and 1564 transitions. Second operand has 30 states, 29 states have (on average 5.724137931034483) internal successors, (166), 29 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:50,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:50,382 INFO L93 Difference]: Finished difference Result 2657 states and 3092 transitions. [2021-08-27 10:55:50,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-27 10:55:50,383 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 5.724137931034483) internal successors, (166), 29 states have internal predecessors, (166), 0 states have call successors, (0), 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 166 [2021-08-27 10:55:50,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:50,387 INFO L225 Difference]: With dead ends: 2657 [2021-08-27 10:55:50,387 INFO L226 Difference]: Without dead ends: 2656 [2021-08-27 10:55:50,387 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 296.0ms TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2021-08-27 10:55:50,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2656 states. [2021-08-27 10:55:50,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2656 to 1401. [2021-08-27 10:55:50,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1401 states, 1399 states have (on average 1.1608291636883488) internal successors, (1624), 1400 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:50,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 1624 transitions. [2021-08-27 10:55:50,403 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 1624 transitions. Word has length 166 [2021-08-27 10:55:50,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:50,403 INFO L470 AbstractCegarLoop]: Abstraction has 1401 states and 1624 transitions. [2021-08-27 10:55:50,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 5.724137931034483) internal successors, (166), 29 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:50,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 1624 transitions. [2021-08-27 10:55:50,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-08-27 10:55:50,404 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:50,404 INFO L512 BasicCegarLoop]: trace histogram [28, 27, 27, 20, 20, 20, 8, 8, 8, 1, 1] [2021-08-27 10:55:50,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2021-08-27 10:55:50,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-08-27 10:55:50,625 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:50,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:50,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1212850681, now seen corresponding path program 14 times [2021-08-27 10:55:50,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:50,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253644706] [2021-08-27 10:55:50,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:50,625 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:50,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:50,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1921 backedges. 594 proven. 1180 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-08-27 10:55:50,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:50,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253644706] [2021-08-27 10:55:50,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253644706] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:50,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098800673] [2021-08-27 10:55:50,831 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 10:55:50,831 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:50,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:50,831 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:55:50,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-08-27 10:55:52,118 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 10:55:52,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:55:52,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 22 conjunts are in the unsatisfiable core [2021-08-27 10:55:52,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:55:52,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1921 backedges. 594 proven. 1180 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-08-27 10:55:52,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098800673] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:52,494 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:55:52,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-08-27 10:55:52,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289395715] [2021-08-27 10:55:52,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-27 10:55:52,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:52,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-27 10:55:52,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-08-27 10:55:52,495 INFO L87 Difference]: Start difference. First operand 1401 states and 1624 transitions. Second operand has 23 states, 23 states have (on average 5.6521739130434785) internal successors, (130), 22 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:52,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:52,557 INFO L93 Difference]: Finished difference Result 2695 states and 3142 transitions. [2021-08-27 10:55:52,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-08-27 10:55:52,557 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.6521739130434785) internal successors, (130), 22 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 168 [2021-08-27 10:55:52,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:52,559 INFO L225 Difference]: With dead ends: 2695 [2021-08-27 10:55:52,559 INFO L226 Difference]: Without dead ends: 1411 [2021-08-27 10:55:52,560 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 160.3ms TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-08-27 10:55:52,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2021-08-27 10:55:52,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 1407. [2021-08-27 10:55:52,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1407 states, 1405 states have (on average 1.1601423487544484) internal successors, (1630), 1406 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:52,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1407 states to 1407 states and 1630 transitions. [2021-08-27 10:55:52,573 INFO L78 Accepts]: Start accepts. Automaton has 1407 states and 1630 transitions. Word has length 168 [2021-08-27 10:55:52,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:52,573 INFO L470 AbstractCegarLoop]: Abstraction has 1407 states and 1630 transitions. [2021-08-27 10:55:52,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.6521739130434785) internal successors, (130), 22 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:52,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 1630 transitions. [2021-08-27 10:55:52,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-08-27 10:55:52,574 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:52,574 INFO L512 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 1, 1] [2021-08-27 10:55:52,594 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2021-08-27 10:55:52,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-08-27 10:55:52,775 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:52,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:52,776 INFO L82 PathProgramCache]: Analyzing trace with hash 170015175, now seen corresponding path program 27 times [2021-08-27 10:55:52,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:52,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183901162] [2021-08-27 10:55:52,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:52,776 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:52,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:53,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:53,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:53,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183901162] [2021-08-27 10:55:53,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183901162] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:53,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570767609] [2021-08-27 10:55:53,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 10:55:53,125 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:53,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:53,126 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:55:53,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-08-27 10:55:54,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2021-08-27 10:55:54,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:55:54,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 30 conjunts are in the unsatisfiable core [2021-08-27 10:55:54,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:55:54,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:54,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570767609] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:54,935 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:55:54,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2021-08-27 10:55:54,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456330926] [2021-08-27 10:55:54,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-08-27 10:55:54,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:54,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-08-27 10:55:54,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2021-08-27 10:55:54,937 INFO L87 Difference]: Start difference. First operand 1407 states and 1630 transitions. Second operand has 31 states, 30 states have (on average 5.733333333333333) internal successors, (172), 30 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:55,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:55,152 INFO L93 Difference]: Finished difference Result 2767 states and 3220 transitions. [2021-08-27 10:55:55,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-08-27 10:55:55,153 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 5.733333333333333) internal successors, (172), 30 states have internal predecessors, (172), 0 states have call successors, (0), 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 172 [2021-08-27 10:55:55,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:55,156 INFO L225 Difference]: With dead ends: 2767 [2021-08-27 10:55:55,156 INFO L226 Difference]: Without dead ends: 2766 [2021-08-27 10:55:55,157 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 295.5ms TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2021-08-27 10:55:55,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2766 states. [2021-08-27 10:55:55,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2766 to 1458. [2021-08-27 10:55:55,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1458 states, 1456 states have (on average 1.1607142857142858) internal successors, (1690), 1457 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:55,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 1690 transitions. [2021-08-27 10:55:55,178 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 1690 transitions. Word has length 172 [2021-08-27 10:55:55,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:55,178 INFO L470 AbstractCegarLoop]: Abstraction has 1458 states and 1690 transitions. [2021-08-27 10:55:55,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 5.733333333333333) internal successors, (172), 30 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:55,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 1690 transitions. [2021-08-27 10:55:55,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-08-27 10:55:55,179 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:55,180 INFO L512 BasicCegarLoop]: trace histogram [29, 28, 28, 21, 21, 21, 8, 8, 8, 1, 1] [2021-08-27 10:55:55,204 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2021-08-27 10:55:55,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:55,401 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:55,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:55,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1794511808, now seen corresponding path program 15 times [2021-08-27 10:55:55,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:55,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825216588] [2021-08-27 10:55:55,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:55,401 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:55,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:55,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2072 backedges. 623 proven. 1302 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-08-27 10:55:55,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:55,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825216588] [2021-08-27 10:55:55,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825216588] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:55,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037768451] [2021-08-27 10:55:55,631 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 10:55:55,632 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:55,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:55,632 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:55:55,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-08-27 10:55:57,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-08-27 10:55:57,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:55:57,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-27 10:55:57,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:55:57,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2072 backedges. 797 proven. 211 refuted. 0 times theorem prover too weak. 1064 trivial. 0 not checked. [2021-08-27 10:55:57,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037768451] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:57,578 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:55:57,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 11] total 34 [2021-08-27 10:55:57,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479910837] [2021-08-27 10:55:57,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-08-27 10:55:57,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:55:57,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-08-27 10:55:57,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-08-27 10:55:57,579 INFO L87 Difference]: Start difference. First operand 1458 states and 1690 transitions. Second operand has 34 states, 34 states have (on average 5.911764705882353) internal successors, (201), 34 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:57,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:55:57,695 INFO L93 Difference]: Finished difference Result 3077 states and 3627 transitions. [2021-08-27 10:55:57,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-08-27 10:55:57,695 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.911764705882353) internal successors, (201), 34 states have internal predecessors, (201), 0 states have call successors, (0), 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 174 [2021-08-27 10:55:57,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:55:57,697 INFO L225 Difference]: With dead ends: 3077 [2021-08-27 10:55:57,697 INFO L226 Difference]: Without dead ends: 1742 [2021-08-27 10:55:57,698 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 370.1ms TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-08-27 10:55:57,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states. [2021-08-27 10:55:57,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 1722. [2021-08-27 10:55:57,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1722 states, 1720 states have (on average 1.1598837209302326) internal successors, (1995), 1721 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:57,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1722 states to 1722 states and 1995 transitions. [2021-08-27 10:55:57,715 INFO L78 Accepts]: Start accepts. Automaton has 1722 states and 1995 transitions. Word has length 174 [2021-08-27 10:55:57,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:55:57,715 INFO L470 AbstractCegarLoop]: Abstraction has 1722 states and 1995 transitions. [2021-08-27 10:55:57,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.911764705882353) internal successors, (201), 34 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:55:57,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1722 states and 1995 transitions. [2021-08-27 10:55:57,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-08-27 10:55:57,716 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:55:57,716 INFO L512 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 1, 1] [2021-08-27 10:55:57,737 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2021-08-27 10:55:57,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-08-27 10:55:57,929 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:55:57,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:55:57,929 INFO L82 PathProgramCache]: Analyzing trace with hash 506424064, now seen corresponding path program 28 times [2021-08-27 10:55:57,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:55:57,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968005606] [2021-08-27 10:55:57,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:55:57,929 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:55:57,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:55:58,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2523 backedges. 0 proven. 2523 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:55:58,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:55:58,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968005606] [2021-08-27 10:55:58,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968005606] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:55:58,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698549895] [2021-08-27 10:55:58,358 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-27 10:55:58,358 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:55:58,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:55:58,359 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:55:58,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-08-27 10:55:59,806 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-27 10:55:59,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:55:59,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 31 conjunts are in the unsatisfiable core [2021-08-27 10:55:59,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:56:00,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2523 backedges. 0 proven. 2523 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:56:00,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698549895] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:00,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:56:00,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-08-27 10:56:00,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129883107] [2021-08-27 10:56:00,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-08-27 10:56:00,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:56:00,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-08-27 10:56:00,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-08-27 10:56:00,265 INFO L87 Difference]: Start difference. First operand 1722 states and 1995 transitions. Second operand has 32 states, 31 states have (on average 5.741935483870968) internal successors, (178), 31 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:00,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:56:00,497 INFO L93 Difference]: Finished difference Result 3393 states and 3948 transitions. [2021-08-27 10:56:00,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-27 10:56:00,497 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 5.741935483870968) internal successors, (178), 31 states have internal predecessors, (178), 0 states have call successors, (0), 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 178 [2021-08-27 10:56:00,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:56:00,501 INFO L225 Difference]: With dead ends: 3393 [2021-08-27 10:56:00,501 INFO L226 Difference]: Without dead ends: 3392 [2021-08-27 10:56:00,501 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 367.8ms TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-08-27 10:56:00,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3392 states. [2021-08-27 10:56:00,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3392 to 1785. [2021-08-27 10:56:00,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1785 states, 1783 states have (on average 1.1604038137969714) internal successors, (2069), 1784 states have internal predecessors, (2069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:00,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1785 states to 1785 states and 2069 transitions. [2021-08-27 10:56:00,542 INFO L78 Accepts]: Start accepts. Automaton has 1785 states and 2069 transitions. Word has length 178 [2021-08-27 10:56:00,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:56:00,543 INFO L470 AbstractCegarLoop]: Abstraction has 1785 states and 2069 transitions. [2021-08-27 10:56:00,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 5.741935483870968) internal successors, (178), 31 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:00,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1785 states and 2069 transitions. [2021-08-27 10:56:00,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-08-27 10:56:00,544 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:56:00,544 INFO L512 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 30, 30, 1, 1] [2021-08-27 10:56:00,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2021-08-27 10:56:00,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-08-27 10:56:00,761 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:56:00,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:56:00,761 INFO L82 PathProgramCache]: Analyzing trace with hash 219614585, now seen corresponding path program 29 times [2021-08-27 10:56:00,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:56:00,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178786867] [2021-08-27 10:56:00,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:56:00,761 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:56:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:56:01,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:56:01,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:56:01,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178786867] [2021-08-27 10:56:01,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178786867] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:01,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13007550] [2021-08-27 10:56:01,212 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-27 10:56:01,212 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:56:01,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:56:01,213 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:56:01,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-08-27 10:56:02,751 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2021-08-27 10:56:02,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:56:02,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 32 conjunts are in the unsatisfiable core [2021-08-27 10:56:02,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:56:03,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:56:03,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13007550] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:03,208 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:56:03,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2021-08-27 10:56:03,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96632292] [2021-08-27 10:56:03,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-08-27 10:56:03,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:56:03,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-08-27 10:56:03,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2021-08-27 10:56:03,209 INFO L87 Difference]: Start difference. First operand 1785 states and 2069 transitions. Second operand has 33 states, 32 states have (on average 5.75) internal successors, (184), 32 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:03,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:56:03,423 INFO L93 Difference]: Finished difference Result 3521 states and 4098 transitions. [2021-08-27 10:56:03,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-08-27 10:56:03,423 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 5.75) internal successors, (184), 32 states have internal predecessors, (184), 0 states have call successors, (0), 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 184 [2021-08-27 10:56:03,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:56:03,426 INFO L225 Difference]: With dead ends: 3521 [2021-08-27 10:56:03,427 INFO L226 Difference]: Without dead ends: 3520 [2021-08-27 10:56:03,427 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 375.0ms TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2021-08-27 10:56:03,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3520 states. [2021-08-27 10:56:03,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3520 to 1848. [2021-08-27 10:56:03,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1848 states, 1846 states have (on average 1.1608884073672807) internal successors, (2143), 1847 states have internal predecessors, (2143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:03,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1848 states to 1848 states and 2143 transitions. [2021-08-27 10:56:03,456 INFO L78 Accepts]: Start accepts. Automaton has 1848 states and 2143 transitions. Word has length 184 [2021-08-27 10:56:03,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:56:03,456 INFO L470 AbstractCegarLoop]: Abstraction has 1848 states and 2143 transitions. [2021-08-27 10:56:03,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 5.75) internal successors, (184), 32 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:03,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1848 states and 2143 transitions. [2021-08-27 10:56:03,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-08-27 10:56:03,457 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:56:03,458 INFO L512 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 1, 1] [2021-08-27 10:56:03,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2021-08-27 10:56:03,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-08-27 10:56:03,681 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:56:03,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:56:03,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1525731022, now seen corresponding path program 30 times [2021-08-27 10:56:03,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:56:03,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731933531] [2021-08-27 10:56:03,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:56:03,681 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:56:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:56:04,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2883 backedges. 0 proven. 2883 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:56:04,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:56:04,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731933531] [2021-08-27 10:56:04,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731933531] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:04,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878936074] [2021-08-27 10:56:04,151 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-27 10:56:04,151 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:56:04,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:56:04,152 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:56:04,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-08-27 10:56:05,743 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 32 check-sat command(s) [2021-08-27 10:56:05,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:56:05,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 33 conjunts are in the unsatisfiable core [2021-08-27 10:56:05,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:56:06,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2883 backedges. 0 proven. 2883 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:56:06,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878936074] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:06,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:56:06,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-08-27 10:56:06,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921303748] [2021-08-27 10:56:06,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-08-27 10:56:06,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:56:06,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-08-27 10:56:06,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-08-27 10:56:06,224 INFO L87 Difference]: Start difference. First operand 1848 states and 2143 transitions. Second operand has 34 states, 33 states have (on average 5.757575757575758) internal successors, (190), 33 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:06,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:56:06,470 INFO L93 Difference]: Finished difference Result 3649 states and 4248 transitions. [2021-08-27 10:56:06,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-08-27 10:56:06,470 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 5.757575757575758) internal successors, (190), 33 states have internal predecessors, (190), 0 states have call successors, (0), 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 190 [2021-08-27 10:56:06,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:56:06,474 INFO L225 Difference]: With dead ends: 3649 [2021-08-27 10:56:06,474 INFO L226 Difference]: Without dead ends: 3648 [2021-08-27 10:56:06,475 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 405.3ms TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-08-27 10:56:06,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3648 states. [2021-08-27 10:56:06,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3648 to 1911. [2021-08-27 10:56:06,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1911 states, 1909 states have (on average 1.1613410162388684) internal successors, (2217), 1910 states have internal predecessors, (2217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:06,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1911 states to 1911 states and 2217 transitions. [2021-08-27 10:56:06,498 INFO L78 Accepts]: Start accepts. Automaton has 1911 states and 2217 transitions. Word has length 190 [2021-08-27 10:56:06,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:56:06,498 INFO L470 AbstractCegarLoop]: Abstraction has 1911 states and 2217 transitions. [2021-08-27 10:56:06,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 5.757575757575758) internal successors, (190), 33 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:06,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1911 states and 2217 transitions. [2021-08-27 10:56:06,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-08-27 10:56:06,499 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:56:06,499 INFO L512 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 1, 1] [2021-08-27 10:56:06,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2021-08-27 10:56:06,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:56:06,713 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:56:06,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:56:06,713 INFO L82 PathProgramCache]: Analyzing trace with hash 394389035, now seen corresponding path program 31 times [2021-08-27 10:56:06,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:56:06,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262793379] [2021-08-27 10:56:06,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:56:06,713 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:56:06,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:56:07,175 INFO L134 CoverageAnalysis]: Checked inductivity of 3072 backedges. 0 proven. 3072 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:56:07,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:56:07,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262793379] [2021-08-27 10:56:07,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262793379] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:07,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521186799] [2021-08-27 10:56:07,175 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-27 10:56:07,175 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:56:07,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:56:07,176 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:56:07,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-08-27 10:56:08,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:56:08,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 34 conjunts are in the unsatisfiable core [2021-08-27 10:56:08,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:56:09,438 INFO L134 CoverageAnalysis]: Checked inductivity of 3072 backedges. 0 proven. 3072 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:56:09,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521186799] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:09,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:56:09,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-08-27 10:56:09,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495960701] [2021-08-27 10:56:09,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-08-27 10:56:09,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:56:09,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-08-27 10:56:09,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-08-27 10:56:09,440 INFO L87 Difference]: Start difference. First operand 1911 states and 2217 transitions. Second operand has 35 states, 34 states have (on average 5.764705882352941) internal successors, (196), 34 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:09,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:56:09,673 INFO L93 Difference]: Finished difference Result 3777 states and 4398 transitions. [2021-08-27 10:56:09,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-27 10:56:09,673 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 5.764705882352941) internal successors, (196), 34 states have internal predecessors, (196), 0 states have call successors, (0), 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 196 [2021-08-27 10:56:09,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:56:09,677 INFO L225 Difference]: With dead ends: 3777 [2021-08-27 10:56:09,677 INFO L226 Difference]: Without dead ends: 3776 [2021-08-27 10:56:09,677 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 396.8ms TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-08-27 10:56:09,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2021-08-27 10:56:09,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 1974. [2021-08-27 10:56:09,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1974 states, 1972 states have (on average 1.161764705882353) internal successors, (2291), 1973 states have internal predecessors, (2291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:09,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 2291 transitions. [2021-08-27 10:56:09,700 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 2291 transitions. Word has length 196 [2021-08-27 10:56:09,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:56:09,701 INFO L470 AbstractCegarLoop]: Abstraction has 1974 states and 2291 transitions. [2021-08-27 10:56:09,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 5.764705882352941) internal successors, (196), 34 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:09,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 2291 transitions. [2021-08-27 10:56:09,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-08-27 10:56:09,702 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:56:09,702 INFO L512 BasicCegarLoop]: trace histogram [33, 32, 32, 23, 23, 23, 10, 10, 10, 1, 1] [2021-08-27 10:56:09,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2021-08-27 10:56:09,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:56:09,919 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:56:09,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:56:09,920 INFO L82 PathProgramCache]: Analyzing trace with hash 666443416, now seen corresponding path program 16 times [2021-08-27 10:56:09,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:56:09,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621549188] [2021-08-27 10:56:09,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:56:09,920 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:56:09,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:56:10,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2676 backedges. 869 proven. 1564 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2021-08-27 10:56:10,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:56:10,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621549188] [2021-08-27 10:56:10,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621549188] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:10,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509265079] [2021-08-27 10:56:10,224 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-27 10:56:10,224 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:56:10,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:56:10,225 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:56:10,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-08-27 10:56:11,929 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-27 10:56:11,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:56:11,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 25 conjunts are in the unsatisfiable core [2021-08-27 10:56:11,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:56:12,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2676 backedges. 869 proven. 1564 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2021-08-27 10:56:12,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509265079] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:12,414 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:56:12,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-08-27 10:56:12,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918908579] [2021-08-27 10:56:12,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-08-27 10:56:12,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:56:12,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-08-27 10:56:12,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-08-27 10:56:12,415 INFO L87 Difference]: Start difference. First operand 1974 states and 2291 transitions. Second operand has 26 states, 26 states have (on average 5.6923076923076925) internal successors, (148), 25 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:12,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:56:12,493 INFO L93 Difference]: Finished difference Result 3823 states and 4458 transitions. [2021-08-27 10:56:12,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-27 10:56:12,494 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.6923076923076925) internal successors, (148), 25 states have internal predecessors, (148), 0 states have call successors, (0), 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 198 [2021-08-27 10:56:12,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:56:12,496 INFO L225 Difference]: With dead ends: 3823 [2021-08-27 10:56:12,496 INFO L226 Difference]: Without dead ends: 1984 [2021-08-27 10:56:12,497 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 245.5ms TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-08-27 10:56:12,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1984 states. [2021-08-27 10:56:12,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1984 to 1980. [2021-08-27 10:56:12,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1980 states, 1978 states have (on average 1.1612740141557127) internal successors, (2297), 1979 states have internal predecessors, (2297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:12,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1980 states to 1980 states and 2297 transitions. [2021-08-27 10:56:12,517 INFO L78 Accepts]: Start accepts. Automaton has 1980 states and 2297 transitions. Word has length 198 [2021-08-27 10:56:12,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:56:12,518 INFO L470 AbstractCegarLoop]: Abstraction has 1980 states and 2297 transitions. [2021-08-27 10:56:12,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.6923076923076925) internal successors, (148), 25 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:12,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1980 states and 2297 transitions. [2021-08-27 10:56:12,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-08-27 10:56:12,519 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:56:12,519 INFO L512 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 33, 33, 1, 1] [2021-08-27 10:56:12,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2021-08-27 10:56:12,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:56:12,725 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:56:12,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:56:12,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1039319964, now seen corresponding path program 32 times [2021-08-27 10:56:12,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:56:12,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135253722] [2021-08-27 10:56:12,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:56:12,725 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:56:12,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:56:13,204 INFO L134 CoverageAnalysis]: Checked inductivity of 3267 backedges. 0 proven. 3267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:56:13,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:56:13,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135253722] [2021-08-27 10:56:13,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135253722] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:13,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121400293] [2021-08-27 10:56:13,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 10:56:13,205 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:56:13,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:56:13,222 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:56:13,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-08-27 10:56:15,059 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 10:56:15,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:56:15,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 35 conjunts are in the unsatisfiable core [2021-08-27 10:56:15,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:56:15,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3267 backedges. 0 proven. 3267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:56:15,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121400293] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:15,578 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:56:15,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2021-08-27 10:56:15,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864559720] [2021-08-27 10:56:15,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-08-27 10:56:15,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:56:15,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-08-27 10:56:15,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2021-08-27 10:56:15,579 INFO L87 Difference]: Start difference. First operand 1980 states and 2297 transitions. Second operand has 36 states, 35 states have (on average 5.771428571428571) internal successors, (202), 35 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:15,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:56:15,802 INFO L93 Difference]: Finished difference Result 3911 states and 4554 transitions. [2021-08-27 10:56:15,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-08-27 10:56:15,803 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 5.771428571428571) internal successors, (202), 35 states have internal predecessors, (202), 0 states have call successors, (0), 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 202 [2021-08-27 10:56:15,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:56:15,806 INFO L225 Difference]: With dead ends: 3911 [2021-08-27 10:56:15,806 INFO L226 Difference]: Without dead ends: 3910 [2021-08-27 10:56:15,806 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 413.1ms TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2021-08-27 10:56:15,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3910 states. [2021-08-27 10:56:15,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3910 to 2043. [2021-08-27 10:56:15,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2043 states, 2041 states have (on average 1.1616854483096521) internal successors, (2371), 2042 states have internal predecessors, (2371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:15,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2043 states to 2043 states and 2371 transitions. [2021-08-27 10:56:15,829 INFO L78 Accepts]: Start accepts. Automaton has 2043 states and 2371 transitions. Word has length 202 [2021-08-27 10:56:15,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:56:15,829 INFO L470 AbstractCegarLoop]: Abstraction has 2043 states and 2371 transitions. [2021-08-27 10:56:15,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 5.771428571428571) internal successors, (202), 35 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:15,830 INFO L276 IsEmpty]: Start isEmpty. Operand 2043 states and 2371 transitions. [2021-08-27 10:56:15,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-08-27 10:56:15,831 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:56:15,831 INFO L512 BasicCegarLoop]: trace histogram [34, 33, 33, 24, 24, 24, 10, 10, 10, 1, 1] [2021-08-27 10:56:15,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2021-08-27 10:56:16,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-08-27 10:56:16,046 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:56:16,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:56:16,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1556597393, now seen corresponding path program 17 times [2021-08-27 10:56:16,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:56:16,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144686336] [2021-08-27 10:56:16,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:56:16,047 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:56:16,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:56:16,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2853 backedges. 906 proven. 1704 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2021-08-27 10:56:16,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:56:16,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144686336] [2021-08-27 10:56:16,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144686336] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:16,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522930479] [2021-08-27 10:56:16,347 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-27 10:56:16,347 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:56:16,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:56:16,348 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:56:16,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-08-27 10:56:18,200 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2021-08-27 10:56:18,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:56:18,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 26 conjunts are in the unsatisfiable core [2021-08-27 10:56:18,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:56:18,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2853 backedges. 906 proven. 1704 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2021-08-27 10:56:18,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522930479] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:18,660 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:56:18,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2021-08-27 10:56:18,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224213633] [2021-08-27 10:56:18,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-27 10:56:18,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:56:18,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-27 10:56:18,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-08-27 10:56:18,661 INFO L87 Difference]: Start difference. First operand 2043 states and 2371 transitions. Second operand has 27 states, 27 states have (on average 5.703703703703703) internal successors, (154), 26 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:18,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:56:18,738 INFO L93 Difference]: Finished difference Result 3955 states and 4612 transitions. [2021-08-27 10:56:18,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-27 10:56:18,739 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.703703703703703) internal successors, (154), 26 states have internal predecessors, (154), 0 states have call successors, (0), 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 204 [2021-08-27 10:56:18,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:56:18,740 INFO L225 Difference]: With dead ends: 3955 [2021-08-27 10:56:18,741 INFO L226 Difference]: Without dead ends: 2053 [2021-08-27 10:56:18,742 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 245.3ms TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-08-27 10:56:18,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2053 states. [2021-08-27 10:56:18,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2053 to 2049. [2021-08-27 10:56:18,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2049 states, 2047 states have (on average 1.1612115290669272) internal successors, (2377), 2048 states have internal predecessors, (2377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:18,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2049 states to 2049 states and 2377 transitions. [2021-08-27 10:56:18,763 INFO L78 Accepts]: Start accepts. Automaton has 2049 states and 2377 transitions. Word has length 204 [2021-08-27 10:56:18,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:56:18,763 INFO L470 AbstractCegarLoop]: Abstraction has 2049 states and 2377 transitions. [2021-08-27 10:56:18,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.703703703703703) internal successors, (154), 26 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:18,763 INFO L276 IsEmpty]: Start isEmpty. Operand 2049 states and 2377 transitions. [2021-08-27 10:56:18,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-08-27 10:56:18,764 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:56:18,764 INFO L512 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 34, 34, 1, 1] [2021-08-27 10:56:18,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2021-08-27 10:56:18,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-08-27 10:56:18,981 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:56:18,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:56:18,981 INFO L82 PathProgramCache]: Analyzing trace with hash 931349469, now seen corresponding path program 33 times [2021-08-27 10:56:18,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:56:18,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40996848] [2021-08-27 10:56:18,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:56:18,981 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:56:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:56:19,508 INFO L134 CoverageAnalysis]: Checked inductivity of 3468 backedges. 0 proven. 3468 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:56:19,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:56:19,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40996848] [2021-08-27 10:56:19,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40996848] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:19,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364444893] [2021-08-27 10:56:19,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 10:56:19,508 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:56:19,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:56:19,509 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:56:19,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-08-27 10:56:21,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 35 check-sat command(s) [2021-08-27 10:56:21,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:56:21,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 36 conjunts are in the unsatisfiable core [2021-08-27 10:56:21,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:56:21,966 INFO L134 CoverageAnalysis]: Checked inductivity of 3468 backedges. 0 proven. 3468 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:56:21,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364444893] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:21,966 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:56:21,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2021-08-27 10:56:21,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137467065] [2021-08-27 10:56:21,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-08-27 10:56:21,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:56:21,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-08-27 10:56:21,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2021-08-27 10:56:21,967 INFO L87 Difference]: Start difference. First operand 2049 states and 2377 transitions. Second operand has 37 states, 36 states have (on average 5.777777777777778) internal successors, (208), 36 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:22,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:56:22,212 INFO L93 Difference]: Finished difference Result 4045 states and 4710 transitions. [2021-08-27 10:56:22,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-27 10:56:22,213 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 5.777777777777778) internal successors, (208), 36 states have internal predecessors, (208), 0 states have call successors, (0), 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 208 [2021-08-27 10:56:22,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:56:22,216 INFO L225 Difference]: With dead ends: 4045 [2021-08-27 10:56:22,216 INFO L226 Difference]: Without dead ends: 4044 [2021-08-27 10:56:22,216 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 457.1ms TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2021-08-27 10:56:22,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4044 states. [2021-08-27 10:56:22,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4044 to 2112. [2021-08-27 10:56:22,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2112 states, 2110 states have (on average 1.1616113744075829) internal successors, (2451), 2111 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:22,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 2451 transitions. [2021-08-27 10:56:22,240 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 2451 transitions. Word has length 208 [2021-08-27 10:56:22,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:56:22,240 INFO L470 AbstractCegarLoop]: Abstraction has 2112 states and 2451 transitions. [2021-08-27 10:56:22,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 5.777777777777778) internal successors, (208), 36 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:22,241 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 2451 transitions. [2021-08-27 10:56:22,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-08-27 10:56:22,242 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:56:22,242 INFO L512 BasicCegarLoop]: trace histogram [35, 34, 34, 25, 25, 25, 10, 10, 10, 1, 1] [2021-08-27 10:56:22,264 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2021-08-27 10:56:22,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-08-27 10:56:22,449 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:56:22,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:56:22,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1289344970, now seen corresponding path program 18 times [2021-08-27 10:56:22,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:56:22,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113867348] [2021-08-27 10:56:22,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:56:22,449 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:56:22,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:56:22,755 INFO L134 CoverageAnalysis]: Checked inductivity of 3036 backedges. 943 proven. 1850 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2021-08-27 10:56:22,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:56:22,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113867348] [2021-08-27 10:56:22,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113867348] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:22,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624652455] [2021-08-27 10:56:22,756 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-27 10:56:22,756 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:56:22,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:56:22,758 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:56:22,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-08-27 10:56:24,759 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2021-08-27 10:56:24,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:56:24,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-27 10:56:24,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:56:25,485 INFO L134 CoverageAnalysis]: Checked inductivity of 3036 backedges. 1149 proven. 323 refuted. 0 times theorem prover too weak. 1564 trivial. 0 not checked. [2021-08-27 10:56:25,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624652455] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:25,485 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:56:25,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 13] total 40 [2021-08-27 10:56:25,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004926867] [2021-08-27 10:56:25,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-08-27 10:56:25,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:56:25,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-08-27 10:56:25,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2021-08-27 10:56:25,486 INFO L87 Difference]: Start difference. First operand 2112 states and 2451 transitions. Second operand has 40 states, 40 states have (on average 5.925) internal successors, (237), 40 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:25,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:56:25,630 INFO L93 Difference]: Finished difference Result 4413 states and 5193 transitions. [2021-08-27 10:56:25,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-08-27 10:56:25,631 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 5.925) internal successors, (237), 40 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 210 [2021-08-27 10:56:25,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:56:25,632 INFO L225 Difference]: With dead ends: 4413 [2021-08-27 10:56:25,633 INFO L226 Difference]: Without dead ends: 2448 [2021-08-27 10:56:25,634 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 523.2ms TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2021-08-27 10:56:25,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2448 states. [2021-08-27 10:56:25,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2448 to 2424. [2021-08-27 10:56:25,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2424 states, 2422 states have (on average 1.1610239471511148) internal successors, (2812), 2423 states have internal predecessors, (2812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:25,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2424 states to 2424 states and 2812 transitions. [2021-08-27 10:56:25,659 INFO L78 Accepts]: Start accepts. Automaton has 2424 states and 2812 transitions. Word has length 210 [2021-08-27 10:56:25,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:56:25,659 INFO L470 AbstractCegarLoop]: Abstraction has 2424 states and 2812 transitions. [2021-08-27 10:56:25,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 5.925) internal successors, (237), 40 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:25,660 INFO L276 IsEmpty]: Start isEmpty. Operand 2424 states and 2812 transitions. [2021-08-27 10:56:25,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-08-27 10:56:25,660 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:56:25,661 INFO L512 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 1, 1] [2021-08-27 10:56:25,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2021-08-27 10:56:25,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-08-27 10:56:25,861 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:56:25,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:56:25,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1997927274, now seen corresponding path program 34 times [2021-08-27 10:56:25,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:56:25,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394823364] [2021-08-27 10:56:25,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:56:25,862 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:56:25,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:56:26,421 INFO L134 CoverageAnalysis]: Checked inductivity of 3675 backedges. 0 proven. 3675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:56:26,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:56:26,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394823364] [2021-08-27 10:56:26,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394823364] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:26,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384818184] [2021-08-27 10:56:26,422 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-27 10:56:26,422 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:56:26,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:56:26,422 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:56:26,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-08-27 10:56:28,508 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-27 10:56:28,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:56:28,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 37 conjunts are in the unsatisfiable core [2021-08-27 10:56:28,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:56:29,077 INFO L134 CoverageAnalysis]: Checked inductivity of 3675 backedges. 0 proven. 3675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:56:29,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384818184] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:29,078 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:56:29,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-08-27 10:56:29,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034844130] [2021-08-27 10:56:29,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-08-27 10:56:29,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:56:29,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-08-27 10:56:29,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2021-08-27 10:56:29,079 INFO L87 Difference]: Start difference. First operand 2424 states and 2812 transitions. Second operand has 38 states, 37 states have (on average 5.783783783783784) internal successors, (214), 37 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:29,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:56:29,320 INFO L93 Difference]: Finished difference Result 4791 states and 5578 transitions. [2021-08-27 10:56:29,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-08-27 10:56:29,320 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 5.783783783783784) internal successors, (214), 37 states have internal predecessors, (214), 0 states have call successors, (0), 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 214 [2021-08-27 10:56:29,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:56:29,324 INFO L225 Difference]: With dead ends: 4791 [2021-08-27 10:56:29,324 INFO L226 Difference]: Without dead ends: 4790 [2021-08-27 10:56:29,324 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 487.9ms TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2021-08-27 10:56:29,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4790 states. [2021-08-27 10:56:29,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4790 to 2499. [2021-08-27 10:56:29,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2499 states, 2497 states have (on average 1.1613936724068883) internal successors, (2900), 2498 states have internal predecessors, (2900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:29,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2499 states to 2499 states and 2900 transitions. [2021-08-27 10:56:29,365 INFO L78 Accepts]: Start accepts. Automaton has 2499 states and 2900 transitions. Word has length 214 [2021-08-27 10:56:29,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:56:29,365 INFO L470 AbstractCegarLoop]: Abstraction has 2499 states and 2900 transitions. [2021-08-27 10:56:29,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 5.783783783783784) internal successors, (214), 37 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:29,366 INFO L276 IsEmpty]: Start isEmpty. Operand 2499 states and 2900 transitions. [2021-08-27 10:56:29,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-08-27 10:56:29,366 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:56:29,367 INFO L512 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 36, 36, 1, 1] [2021-08-27 10:56:29,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2021-08-27 10:56:29,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-08-27 10:56:29,567 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:56:29,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:56:29,567 INFO L82 PathProgramCache]: Analyzing trace with hash -830757233, now seen corresponding path program 35 times [2021-08-27 10:56:29,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:56:29,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192262940] [2021-08-27 10:56:29,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:56:29,568 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:56:29,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:56:30,168 INFO L134 CoverageAnalysis]: Checked inductivity of 3888 backedges. 0 proven. 3888 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:56:30,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:56:30,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192262940] [2021-08-27 10:56:30,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192262940] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:30,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697192300] [2021-08-27 10:56:30,169 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-27 10:56:30,169 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:56:30,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:56:30,169 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:56:30,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2021-08-27 10:56:32,358 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2021-08-27 10:56:32,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:56:32,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 38 conjunts are in the unsatisfiable core [2021-08-27 10:56:32,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:56:32,897 INFO L134 CoverageAnalysis]: Checked inductivity of 3888 backedges. 0 proven. 3888 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:56:32,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697192300] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:32,898 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:56:32,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2021-08-27 10:56:32,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980548199] [2021-08-27 10:56:32,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-08-27 10:56:32,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:56:32,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-08-27 10:56:32,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-08-27 10:56:32,899 INFO L87 Difference]: Start difference. First operand 2499 states and 2900 transitions. Second operand has 39 states, 38 states have (on average 5.7894736842105265) internal successors, (220), 38 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) [2021-08-27 10:56:33,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:56:33,135 INFO L93 Difference]: Finished difference Result 4943 states and 5756 transitions. [2021-08-27 10:56:33,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-08-27 10:56:33,136 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 5.7894736842105265) internal successors, (220), 38 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 220 [2021-08-27 10:56:33,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:56:33,139 INFO L225 Difference]: With dead ends: 4943 [2021-08-27 10:56:33,139 INFO L226 Difference]: Without dead ends: 4942 [2021-08-27 10:56:33,140 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 525.3ms TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-08-27 10:56:33,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4942 states. [2021-08-27 10:56:33,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4942 to 2574. [2021-08-27 10:56:33,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2574 states, 2572 states have (on average 1.1617418351477449) internal successors, (2988), 2573 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:33,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2574 states to 2574 states and 2988 transitions. [2021-08-27 10:56:33,177 INFO L78 Accepts]: Start accepts. Automaton has 2574 states and 2988 transitions. Word has length 220 [2021-08-27 10:56:33,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:56:33,177 INFO L470 AbstractCegarLoop]: Abstraction has 2574 states and 2988 transitions. [2021-08-27 10:56:33,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 5.7894736842105265) internal successors, (220), 38 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) [2021-08-27 10:56:33,177 INFO L276 IsEmpty]: Start isEmpty. Operand 2574 states and 2988 transitions. [2021-08-27 10:56:33,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-08-27 10:56:33,178 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:56:33,178 INFO L512 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 37, 37, 1, 1] [2021-08-27 10:56:33,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2021-08-27 10:56:33,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-08-27 10:56:33,389 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:56:33,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:56:33,389 INFO L82 PathProgramCache]: Analyzing trace with hash -257547832, now seen corresponding path program 36 times [2021-08-27 10:56:33,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:56:33,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528799121] [2021-08-27 10:56:33,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:56:33,389 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:56:33,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:56:34,007 INFO L134 CoverageAnalysis]: Checked inductivity of 4107 backedges. 0 proven. 4107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:56:34,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:56:34,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528799121] [2021-08-27 10:56:34,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528799121] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:34,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736400389] [2021-08-27 10:56:34,008 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-27 10:56:34,008 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:56:34,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:56:34,009 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:56:34,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2021-08-27 10:56:36,222 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 38 check-sat command(s) [2021-08-27 10:56:36,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:56:36,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 39 conjunts are in the unsatisfiable core [2021-08-27 10:56:36,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:56:36,765 INFO L134 CoverageAnalysis]: Checked inductivity of 4107 backedges. 0 proven. 4107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:56:36,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736400389] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:36,765 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:56:36,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2021-08-27 10:56:36,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105017342] [2021-08-27 10:56:36,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-08-27 10:56:36,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:56:36,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-08-27 10:56:36,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2021-08-27 10:56:36,766 INFO L87 Difference]: Start difference. First operand 2574 states and 2988 transitions. Second operand has 40 states, 39 states have (on average 5.794871794871795) internal successors, (226), 39 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:37,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:56:37,055 INFO L93 Difference]: Finished difference Result 5095 states and 5934 transitions. [2021-08-27 10:56:37,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-08-27 10:56:37,056 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 5.794871794871795) internal successors, (226), 39 states have internal predecessors, (226), 0 states have call successors, (0), 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 226 [2021-08-27 10:56:37,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:56:37,060 INFO L225 Difference]: With dead ends: 5095 [2021-08-27 10:56:37,060 INFO L226 Difference]: Without dead ends: 5094 [2021-08-27 10:56:37,061 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 535.6ms TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2021-08-27 10:56:37,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5094 states. [2021-08-27 10:56:37,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5094 to 2649. [2021-08-27 10:56:37,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2649 states, 2647 states have (on average 1.162070268228183) internal successors, (3076), 2648 states have internal predecessors, (3076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:37,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2649 states to 2649 states and 3076 transitions. [2021-08-27 10:56:37,098 INFO L78 Accepts]: Start accepts. Automaton has 2649 states and 3076 transitions. Word has length 226 [2021-08-27 10:56:37,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:56:37,098 INFO L470 AbstractCegarLoop]: Abstraction has 2649 states and 3076 transitions. [2021-08-27 10:56:37,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 5.794871794871795) internal successors, (226), 39 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:37,098 INFO L276 IsEmpty]: Start isEmpty. Operand 2649 states and 3076 transitions. [2021-08-27 10:56:37,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-08-27 10:56:37,099 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:56:37,099 INFO L512 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 38, 38, 1, 1] [2021-08-27 10:56:37,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2021-08-27 10:56:37,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:56:37,305 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:56:37,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:56:37,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1324642751, now seen corresponding path program 37 times [2021-08-27 10:56:37,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:56:37,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787883893] [2021-08-27 10:56:37,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:56:37,306 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:56:37,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:56:37,947 INFO L134 CoverageAnalysis]: Checked inductivity of 4332 backedges. 0 proven. 4332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:56:37,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:56:37,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787883893] [2021-08-27 10:56:37,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787883893] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:37,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248441375] [2021-08-27 10:56:37,948 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-27 10:56:37,948 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:56:37,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:56:37,948 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:56:37,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-08-27 10:56:40,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:56:40,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 40 conjunts are in the unsatisfiable core [2021-08-27 10:56:40,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:56:40,825 INFO L134 CoverageAnalysis]: Checked inductivity of 4332 backedges. 0 proven. 4332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:56:40,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248441375] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:40,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:56:40,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2021-08-27 10:56:40,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898440240] [2021-08-27 10:56:40,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-08-27 10:56:40,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:56:40,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-08-27 10:56:40,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2021-08-27 10:56:40,826 INFO L87 Difference]: Start difference. First operand 2649 states and 3076 transitions. Second operand has 41 states, 40 states have (on average 5.8) internal successors, (232), 40 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:41,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:56:41,106 INFO L93 Difference]: Finished difference Result 5247 states and 6112 transitions. [2021-08-27 10:56:41,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-08-27 10:56:41,106 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 5.8) internal successors, (232), 40 states have internal predecessors, (232), 0 states have call successors, (0), 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 232 [2021-08-27 10:56:41,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:56:41,110 INFO L225 Difference]: With dead ends: 5247 [2021-08-27 10:56:41,110 INFO L226 Difference]: Without dead ends: 5246 [2021-08-27 10:56:41,111 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 561.4ms TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2021-08-27 10:56:41,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5246 states. [2021-08-27 10:56:41,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5246 to 2724. [2021-08-27 10:56:41,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2724 states, 2722 states have (on average 1.162380602498163) internal successors, (3164), 2723 states have internal predecessors, (3164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:41,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 3164 transitions. [2021-08-27 10:56:41,160 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 3164 transitions. Word has length 232 [2021-08-27 10:56:41,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:56:41,161 INFO L470 AbstractCegarLoop]: Abstraction has 2724 states and 3164 transitions. [2021-08-27 10:56:41,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 5.8) internal successors, (232), 40 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:41,161 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 3164 transitions. [2021-08-27 10:56:41,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-08-27 10:56:41,162 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:56:41,162 INFO L512 BasicCegarLoop]: trace histogram [39, 38, 38, 27, 27, 27, 12, 12, 12, 1, 1] [2021-08-27 10:56:41,185 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2021-08-27 10:56:41,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:56:41,363 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:56:41,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:56:41,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1381135010, now seen corresponding path program 19 times [2021-08-27 10:56:41,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:56:41,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945425280] [2021-08-27 10:56:41,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:56:41,363 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:56:41,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:56:41,723 INFO L134 CoverageAnalysis]: Checked inductivity of 3760 backedges. 1237 proven. 2160 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2021-08-27 10:56:41,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:56:41,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945425280] [2021-08-27 10:56:41,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945425280] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:41,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880368961] [2021-08-27 10:56:41,724 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-27 10:56:41,724 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:56:41,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:56:41,725 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:56:41,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-08-27 10:56:44,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:56:44,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 29 conjunts are in the unsatisfiable core [2021-08-27 10:56:44,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:56:44,623 INFO L134 CoverageAnalysis]: Checked inductivity of 3760 backedges. 1237 proven. 2160 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2021-08-27 10:56:44,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880368961] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:44,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:56:44,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2021-08-27 10:56:44,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695441765] [2021-08-27 10:56:44,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-08-27 10:56:44,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:56:44,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-08-27 10:56:44,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2021-08-27 10:56:44,625 INFO L87 Difference]: Start difference. First operand 2724 states and 3164 transitions. Second operand has 30 states, 30 states have (on average 5.733333333333333) internal successors, (172), 29 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:44,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:56:44,715 INFO L93 Difference]: Finished difference Result 5299 states and 6180 transitions. [2021-08-27 10:56:44,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-27 10:56:44,716 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.733333333333333) internal successors, (172), 29 states have internal predecessors, (172), 0 states have call successors, (0), 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 234 [2021-08-27 10:56:44,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:56:44,718 INFO L225 Difference]: With dead ends: 5299 [2021-08-27 10:56:44,718 INFO L226 Difference]: Without dead ends: 2734 [2021-08-27 10:56:44,720 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 296.7ms TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2021-08-27 10:56:44,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2734 states. [2021-08-27 10:56:44,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2734 to 2730. [2021-08-27 10:56:44,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2730 states, 2728 states have (on average 1.1620234604105573) internal successors, (3170), 2729 states have internal predecessors, (3170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:44,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2730 states to 2730 states and 3170 transitions. [2021-08-27 10:56:44,772 INFO L78 Accepts]: Start accepts. Automaton has 2730 states and 3170 transitions. Word has length 234 [2021-08-27 10:56:44,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:56:44,772 INFO L470 AbstractCegarLoop]: Abstraction has 2730 states and 3170 transitions. [2021-08-27 10:56:44,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.733333333333333) internal successors, (172), 29 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:44,772 INFO L276 IsEmpty]: Start isEmpty. Operand 2730 states and 3170 transitions. [2021-08-27 10:56:44,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-08-27 10:56:44,774 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:56:44,774 INFO L512 BasicCegarLoop]: trace histogram [40, 40, 39, 39, 39, 39, 1, 1] [2021-08-27 10:56:44,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2021-08-27 10:56:44,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:56:44,974 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:56:44,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:56:44,974 INFO L82 PathProgramCache]: Analyzing trace with hash -209585158, now seen corresponding path program 38 times [2021-08-27 10:56:44,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:56:44,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852927539] [2021-08-27 10:56:44,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:56:44,975 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:56:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:56:45,650 INFO L134 CoverageAnalysis]: Checked inductivity of 4563 backedges. 0 proven. 4563 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:56:45,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:56:45,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852927539] [2021-08-27 10:56:45,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852927539] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:45,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344300765] [2021-08-27 10:56:45,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 10:56:45,651 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:56:45,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:56:45,652 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:56:45,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-08-27 10:56:48,118 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 10:56:48,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:56:48,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 41 conjunts are in the unsatisfiable core [2021-08-27 10:56:48,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:56:48,728 INFO L134 CoverageAnalysis]: Checked inductivity of 4563 backedges. 0 proven. 4563 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:56:48,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344300765] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:48,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:56:48,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2021-08-27 10:56:48,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298918504] [2021-08-27 10:56:48,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-08-27 10:56:48,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:56:48,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-08-27 10:56:48,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2021-08-27 10:56:48,730 INFO L87 Difference]: Start difference. First operand 2730 states and 3170 transitions. Second operand has 42 states, 41 states have (on average 5.804878048780488) internal successors, (238), 41 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:49,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:56:49,005 INFO L93 Difference]: Finished difference Result 5405 states and 6296 transitions. [2021-08-27 10:56:49,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-08-27 10:56:49,006 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 5.804878048780488) internal successors, (238), 41 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 238 [2021-08-27 10:56:49,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:56:49,010 INFO L225 Difference]: With dead ends: 5405 [2021-08-27 10:56:49,010 INFO L226 Difference]: Without dead ends: 5404 [2021-08-27 10:56:49,011 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 592.5ms TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2021-08-27 10:56:49,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5404 states. [2021-08-27 10:56:49,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5404 to 2805. [2021-08-27 10:56:49,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2805 states, 2803 states have (on average 1.1623260792008563) internal successors, (3258), 2804 states have internal predecessors, (3258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:49,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2805 states to 2805 states and 3258 transitions. [2021-08-27 10:56:49,049 INFO L78 Accepts]: Start accepts. Automaton has 2805 states and 3258 transitions. Word has length 238 [2021-08-27 10:56:49,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:56:49,050 INFO L470 AbstractCegarLoop]: Abstraction has 2805 states and 3258 transitions. [2021-08-27 10:56:49,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 5.804878048780488) internal successors, (238), 41 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:49,050 INFO L276 IsEmpty]: Start isEmpty. Operand 2805 states and 3258 transitions. [2021-08-27 10:56:49,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-08-27 10:56:49,051 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:56:49,051 INFO L512 BasicCegarLoop]: trace histogram [40, 39, 39, 28, 28, 28, 12, 12, 12, 1, 1] [2021-08-27 10:56:49,076 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2021-08-27 10:56:49,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2021-08-27 10:56:49,252 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:56:49,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:56:49,252 INFO L82 PathProgramCache]: Analyzing trace with hash -790342117, now seen corresponding path program 20 times [2021-08-27 10:56:49,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:56:49,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15961329] [2021-08-27 10:56:49,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:56:49,253 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:56:49,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:56:49,609 INFO L134 CoverageAnalysis]: Checked inductivity of 3969 backedges. 1282 proven. 2324 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2021-08-27 10:56:49,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:56:49,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15961329] [2021-08-27 10:56:49,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15961329] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:49,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115562036] [2021-08-27 10:56:49,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 10:56:49,610 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:56:49,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:56:49,613 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:56:49,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-08-27 10:56:52,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 10:56:52,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:56:52,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 30 conjunts are in the unsatisfiable core [2021-08-27 10:56:52,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:56:52,815 INFO L134 CoverageAnalysis]: Checked inductivity of 3969 backedges. 1282 proven. 2324 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2021-08-27 10:56:52,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115562036] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:52,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:56:52,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-08-27 10:56:52,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54022773] [2021-08-27 10:56:52,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-08-27 10:56:52,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:56:52,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-08-27 10:56:52,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2021-08-27 10:56:52,816 INFO L87 Difference]: Start difference. First operand 2805 states and 3258 transitions. Second operand has 31 states, 31 states have (on average 5.741935483870968) internal successors, (178), 30 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:52,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:56:52,906 INFO L93 Difference]: Finished difference Result 5455 states and 6362 transitions. [2021-08-27 10:56:52,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-08-27 10:56:52,906 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.741935483870968) internal successors, (178), 30 states have internal predecessors, (178), 0 states have call successors, (0), 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 240 [2021-08-27 10:56:52,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:56:52,909 INFO L225 Difference]: With dead ends: 5455 [2021-08-27 10:56:52,909 INFO L226 Difference]: Without dead ends: 2815 [2021-08-27 10:56:52,911 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 294.1ms TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2021-08-27 10:56:52,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2815 states. [2021-08-27 10:56:52,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2815 to 2811. [2021-08-27 10:56:52,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2811 states, 2809 states have (on average 1.1619793520825916) internal successors, (3264), 2810 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:52,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2811 states to 2811 states and 3264 transitions. [2021-08-27 10:56:52,943 INFO L78 Accepts]: Start accepts. Automaton has 2811 states and 3264 transitions. Word has length 240 [2021-08-27 10:56:52,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:56:52,943 INFO L470 AbstractCegarLoop]: Abstraction has 2811 states and 3264 transitions. [2021-08-27 10:56:52,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.741935483870968) internal successors, (178), 30 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:52,943 INFO L276 IsEmpty]: Start isEmpty. Operand 2811 states and 3264 transitions. [2021-08-27 10:56:52,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-08-27 10:56:52,944 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:56:52,945 INFO L512 BasicCegarLoop]: trace histogram [41, 41, 40, 40, 40, 40, 1, 1] [2021-08-27 10:56:52,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2021-08-27 10:56:53,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2021-08-27 10:56:53,161 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:56:53,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:56:53,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1192458995, now seen corresponding path program 39 times [2021-08-27 10:56:53,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:56:53,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359787268] [2021-08-27 10:56:53,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:56:53,161 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:56:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:56:53,862 INFO L134 CoverageAnalysis]: Checked inductivity of 4800 backedges. 0 proven. 4800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:56:53,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:56:53,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359787268] [2021-08-27 10:56:53,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359787268] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:53,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708175611] [2021-08-27 10:56:53,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 10:56:53,862 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:56:53,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:56:53,863 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:56:53,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-08-27 10:56:56,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 41 check-sat command(s) [2021-08-27 10:56:56,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:56:56,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 42 conjunts are in the unsatisfiable core [2021-08-27 10:56:56,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:56:57,142 INFO L134 CoverageAnalysis]: Checked inductivity of 4800 backedges. 0 proven. 4800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:56:57,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708175611] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:57,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:56:57,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2021-08-27 10:56:57,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930902753] [2021-08-27 10:56:57,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-08-27 10:56:57,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:56:57,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-08-27 10:56:57,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2021-08-27 10:56:57,144 INFO L87 Difference]: Start difference. First operand 2811 states and 3264 transitions. Second operand has 43 states, 42 states have (on average 5.809523809523809) internal successors, (244), 42 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:57,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:56:57,452 INFO L93 Difference]: Finished difference Result 5563 states and 6480 transitions. [2021-08-27 10:56:57,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-08-27 10:56:57,453 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 5.809523809523809) internal successors, (244), 42 states have internal predecessors, (244), 0 states have call successors, (0), 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 244 [2021-08-27 10:56:57,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:56:57,457 INFO L225 Difference]: With dead ends: 5563 [2021-08-27 10:56:57,457 INFO L226 Difference]: Without dead ends: 5562 [2021-08-27 10:56:57,458 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 617.0ms TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2021-08-27 10:56:57,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5562 states. [2021-08-27 10:56:57,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5562 to 2886. [2021-08-27 10:56:57,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2886 states, 2884 states have (on average 1.1622746185852981) internal successors, (3352), 2885 states have internal predecessors, (3352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:57,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2886 states to 2886 states and 3352 transitions. [2021-08-27 10:56:57,490 INFO L78 Accepts]: Start accepts. Automaton has 2886 states and 3352 transitions. Word has length 244 [2021-08-27 10:56:57,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:56:57,490 INFO L470 AbstractCegarLoop]: Abstraction has 2886 states and 3352 transitions. [2021-08-27 10:56:57,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 5.809523809523809) internal successors, (244), 42 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:56:57,491 INFO L276 IsEmpty]: Start isEmpty. Operand 2886 states and 3352 transitions. [2021-08-27 10:56:57,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2021-08-27 10:56:57,492 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:56:57,492 INFO L512 BasicCegarLoop]: trace histogram [41, 40, 40, 29, 29, 29, 12, 12, 12, 1, 1] [2021-08-27 10:56:57,517 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2021-08-27 10:56:57,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:56:57,693 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:56:57,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:56:57,693 INFO L82 PathProgramCache]: Analyzing trace with hash -2045642028, now seen corresponding path program 21 times [2021-08-27 10:56:57,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:56:57,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580302601] [2021-08-27 10:56:57,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:56:57,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:56:57,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:56:58,149 INFO L134 CoverageAnalysis]: Checked inductivity of 4184 backedges. 1327 proven. 2494 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2021-08-27 10:56:58,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:56:58,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580302601] [2021-08-27 10:56:58,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580302601] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:56:58,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231161810] [2021-08-27 10:56:58,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 10:56:58,150 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:56:58,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:56:58,150 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:56:58,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-08-27 10:57:00,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2021-08-27 10:57:00,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:57:00,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-27 10:57:00,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:57:01,798 INFO L134 CoverageAnalysis]: Checked inductivity of 4184 backedges. 1565 proven. 459 refuted. 0 times theorem prover too weak. 2160 trivial. 0 not checked. [2021-08-27 10:57:01,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231161810] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:57:01,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:57:01,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 15] total 46 [2021-08-27 10:57:01,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130472950] [2021-08-27 10:57:01,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-08-27 10:57:01,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:57:01,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-08-27 10:57:01,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-08-27 10:57:01,799 INFO L87 Difference]: Start difference. First operand 2886 states and 3352 transitions. Second operand has 46 states, 46 states have (on average 5.934782608695652) internal successors, (273), 46 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:57:01,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:57:01,984 INFO L93 Difference]: Finished difference Result 5989 states and 7039 transitions. [2021-08-27 10:57:01,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-08-27 10:57:01,984 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 5.934782608695652) internal successors, (273), 46 states have internal predecessors, (273), 0 states have call successors, (0), 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 246 [2021-08-27 10:57:01,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:57:01,987 INFO L225 Difference]: With dead ends: 5989 [2021-08-27 10:57:01,987 INFO L226 Difference]: Without dead ends: 3274 [2021-08-27 10:57:01,989 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 759.0ms TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-08-27 10:57:01,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3274 states. [2021-08-27 10:57:02,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3274 to 3246. [2021-08-27 10:57:02,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3246 states, 3244 states have (on average 1.1618372379778052) internal successors, (3769), 3245 states have internal predecessors, (3769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:57:02,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3246 states to 3246 states and 3769 transitions. [2021-08-27 10:57:02,031 INFO L78 Accepts]: Start accepts. Automaton has 3246 states and 3769 transitions. Word has length 246 [2021-08-27 10:57:02,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:57:02,032 INFO L470 AbstractCegarLoop]: Abstraction has 3246 states and 3769 transitions. [2021-08-27 10:57:02,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 5.934782608695652) internal successors, (273), 46 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:57:02,032 INFO L276 IsEmpty]: Start isEmpty. Operand 3246 states and 3769 transitions. [2021-08-27 10:57:02,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-08-27 10:57:02,033 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:57:02,033 INFO L512 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 41, 41, 1, 1] [2021-08-27 10:57:02,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2021-08-27 10:57:02,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:57:02,249 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:57:02,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:57:02,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1359078612, now seen corresponding path program 40 times [2021-08-27 10:57:02,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:57:02,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796535679] [2021-08-27 10:57:02,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:57:02,249 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:57:02,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:57:02,986 INFO L134 CoverageAnalysis]: Checked inductivity of 5043 backedges. 0 proven. 5043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:57:02,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:57:02,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796535679] [2021-08-27 10:57:02,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796535679] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:57:02,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351050574] [2021-08-27 10:57:02,987 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-27 10:57:02,987 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:57:02,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:57:02,988 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:57:02,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-08-27 10:57:05,822 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-27 10:57:05,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:57:05,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 43 conjunts are in the unsatisfiable core [2021-08-27 10:57:05,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:57:06,489 INFO L134 CoverageAnalysis]: Checked inductivity of 5043 backedges. 0 proven. 5043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:57:06,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351050574] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:57:06,489 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:57:06,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2021-08-27 10:57:06,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750261212] [2021-08-27 10:57:06,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-08-27 10:57:06,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:57:06,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-08-27 10:57:06,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2021-08-27 10:57:06,491 INFO L87 Difference]: Start difference. First operand 3246 states and 3769 transitions. Second operand has 44 states, 43 states have (on average 5.813953488372093) internal successors, (250), 43 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:57:06,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:57:06,805 INFO L93 Difference]: Finished difference Result 6429 states and 7488 transitions. [2021-08-27 10:57:06,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-08-27 10:57:06,806 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 5.813953488372093) internal successors, (250), 43 states have internal predecessors, (250), 0 states have call successors, (0), 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 250 [2021-08-27 10:57:06,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:57:06,810 INFO L225 Difference]: With dead ends: 6429 [2021-08-27 10:57:06,810 INFO L226 Difference]: Without dead ends: 6428 [2021-08-27 10:57:06,811 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 641.1ms TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2021-08-27 10:57:06,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6428 states. [2021-08-27 10:57:06,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6428 to 3333. [2021-08-27 10:57:06,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3333 states, 3331 states have (on average 1.162113479435605) internal successors, (3871), 3332 states have internal predecessors, (3871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:57:06,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3333 states to 3333 states and 3871 transitions. [2021-08-27 10:57:06,889 INFO L78 Accepts]: Start accepts. Automaton has 3333 states and 3871 transitions. Word has length 250 [2021-08-27 10:57:06,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:57:06,889 INFO L470 AbstractCegarLoop]: Abstraction has 3333 states and 3871 transitions. [2021-08-27 10:57:06,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 5.813953488372093) internal successors, (250), 43 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:57:06,889 INFO L276 IsEmpty]: Start isEmpty. Operand 3333 states and 3871 transitions. [2021-08-27 10:57:06,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2021-08-27 10:57:06,891 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:57:06,891 INFO L512 BasicCegarLoop]: trace histogram [43, 43, 42, 42, 42, 42, 1, 1] [2021-08-27 10:57:06,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2021-08-27 10:57:07,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2021-08-27 10:57:07,091 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:57:07,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:57:07,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1414271835, now seen corresponding path program 41 times [2021-08-27 10:57:07,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:57:07,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138466689] [2021-08-27 10:57:07,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:57:07,092 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:57:07,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:57:07,843 INFO L134 CoverageAnalysis]: Checked inductivity of 5292 backedges. 0 proven. 5292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:57:07,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:57:07,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138466689] [2021-08-27 10:57:07,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138466689] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:57:07,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627282722] [2021-08-27 10:57:07,844 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-27 10:57:07,844 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:57:07,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:57:07,845 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:57:07,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-08-27 10:57:10,813 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2021-08-27 10:57:10,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:57:10,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 44 conjunts are in the unsatisfiable core [2021-08-27 10:57:10,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:57:11,443 INFO L134 CoverageAnalysis]: Checked inductivity of 5292 backedges. 0 proven. 5292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:57:11,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627282722] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:57:11,443 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:57:11,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2021-08-27 10:57:11,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24122099] [2021-08-27 10:57:11,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-08-27 10:57:11,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:57:11,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-08-27 10:57:11,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2021-08-27 10:57:11,444 INFO L87 Difference]: Start difference. First operand 3333 states and 3871 transitions. Second operand has 45 states, 44 states have (on average 5.818181818181818) internal successors, (256), 44 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:57:11,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:57:11,727 INFO L93 Difference]: Finished difference Result 6605 states and 7694 transitions. [2021-08-27 10:57:11,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-08-27 10:57:11,728 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 5.818181818181818) internal successors, (256), 44 states have internal predecessors, (256), 0 states have call successors, (0), 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 256 [2021-08-27 10:57:11,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:57:11,733 INFO L225 Difference]: With dead ends: 6605 [2021-08-27 10:57:11,733 INFO L226 Difference]: Without dead ends: 6604 [2021-08-27 10:57:11,734 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 655.5ms TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2021-08-27 10:57:11,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6604 states. [2021-08-27 10:57:11,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6604 to 3420. [2021-08-27 10:57:11,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3420 states, 3418 states have (on average 1.1623756582796958) internal successors, (3973), 3419 states have internal predecessors, (3973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:57:11,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3420 states to 3420 states and 3973 transitions. [2021-08-27 10:57:11,791 INFO L78 Accepts]: Start accepts. Automaton has 3420 states and 3973 transitions. Word has length 256 [2021-08-27 10:57:11,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:57:11,791 INFO L470 AbstractCegarLoop]: Abstraction has 3420 states and 3973 transitions. [2021-08-27 10:57:11,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 5.818181818181818) internal successors, (256), 44 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:57:11,791 INFO L276 IsEmpty]: Start isEmpty. Operand 3420 states and 3973 transitions. [2021-08-27 10:57:11,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-08-27 10:57:11,793 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:57:11,793 INFO L512 BasicCegarLoop]: trace histogram [44, 44, 43, 43, 43, 43, 1, 1] [2021-08-27 10:57:11,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2021-08-27 10:57:11,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-08-27 10:57:11,994 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:57:11,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:57:11,994 INFO L82 PathProgramCache]: Analyzing trace with hash -2082799778, now seen corresponding path program 42 times [2021-08-27 10:57:11,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:57:11,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55541810] [2021-08-27 10:57:11,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:57:11,994 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:57:12,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:57:12,778 INFO L134 CoverageAnalysis]: Checked inductivity of 5547 backedges. 0 proven. 5547 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:57:12,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:57:12,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55541810] [2021-08-27 10:57:12,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55541810] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:57:12,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317901516] [2021-08-27 10:57:12,779 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-27 10:57:12,779 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:57:12,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:57:12,779 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:57:12,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-08-27 10:57:15,867 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 44 check-sat command(s) [2021-08-27 10:57:15,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:57:15,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 45 conjunts are in the unsatisfiable core [2021-08-27 10:57:15,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:57:16,491 INFO L134 CoverageAnalysis]: Checked inductivity of 5547 backedges. 0 proven. 5547 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:57:16,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317901516] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:57:16,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:57:16,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2021-08-27 10:57:16,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563132300] [2021-08-27 10:57:16,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-08-27 10:57:16,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:57:16,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-08-27 10:57:16,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-08-27 10:57:16,493 INFO L87 Difference]: Start difference. First operand 3420 states and 3973 transitions. Second operand has 46 states, 45 states have (on average 5.822222222222222) internal successors, (262), 45 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:57:16,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:57:16,814 INFO L93 Difference]: Finished difference Result 6781 states and 7900 transitions. [2021-08-27 10:57:16,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-08-27 10:57:16,814 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 5.822222222222222) internal successors, (262), 45 states have internal predecessors, (262), 0 states have call successors, (0), 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 262 [2021-08-27 10:57:16,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:57:16,820 INFO L225 Difference]: With dead ends: 6781 [2021-08-27 10:57:16,820 INFO L226 Difference]: Without dead ends: 6780 [2021-08-27 10:57:16,821 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 694.4ms TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-08-27 10:57:16,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6780 states. [2021-08-27 10:57:16,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6780 to 3507. [2021-08-27 10:57:16,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3507 states, 3505 states have (on average 1.1626248216833095) internal successors, (4075), 3506 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:57:16,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3507 states to 3507 states and 4075 transitions. [2021-08-27 10:57:16,862 INFO L78 Accepts]: Start accepts. Automaton has 3507 states and 4075 transitions. Word has length 262 [2021-08-27 10:57:16,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:57:16,862 INFO L470 AbstractCegarLoop]: Abstraction has 3507 states and 4075 transitions. [2021-08-27 10:57:16,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 5.822222222222222) internal successors, (262), 45 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:57:16,862 INFO L276 IsEmpty]: Start isEmpty. Operand 3507 states and 4075 transitions. [2021-08-27 10:57:16,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2021-08-27 10:57:16,864 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:57:16,864 INFO L512 BasicCegarLoop]: trace histogram [45, 45, 44, 44, 44, 44, 1, 1] [2021-08-27 10:57:16,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2021-08-27 10:57:17,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:57:17,065 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:57:17,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:57:17,065 INFO L82 PathProgramCache]: Analyzing trace with hash -850566313, now seen corresponding path program 43 times [2021-08-27 10:57:17,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:57:17,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148054030] [2021-08-27 10:57:17,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:57:17,065 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:57:17,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:57:17,901 INFO L134 CoverageAnalysis]: Checked inductivity of 5808 backedges. 0 proven. 5808 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:57:17,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:57:17,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148054030] [2021-08-27 10:57:17,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148054030] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:57:17,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717465606] [2021-08-27 10:57:17,901 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-27 10:57:17,901 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:57:17,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:57:17,902 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:57:17,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-08-27 10:57:20,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:57:20,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 46 conjunts are in the unsatisfiable core [2021-08-27 10:57:20,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:57:21,640 INFO L134 CoverageAnalysis]: Checked inductivity of 5808 backedges. 0 proven. 5808 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:57:21,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717465606] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:57:21,640 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:57:21,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2021-08-27 10:57:21,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075923737] [2021-08-27 10:57:21,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-08-27 10:57:21,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:57:21,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-08-27 10:57:21,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2021-08-27 10:57:21,641 INFO L87 Difference]: Start difference. First operand 3507 states and 4075 transitions. Second operand has 47 states, 46 states have (on average 5.826086956521739) internal successors, (268), 46 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:57:21,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:57:21,948 INFO L93 Difference]: Finished difference Result 6957 states and 8106 transitions. [2021-08-27 10:57:21,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-08-27 10:57:21,948 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 5.826086956521739) internal successors, (268), 46 states have internal predecessors, (268), 0 states have call successors, (0), 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 268 [2021-08-27 10:57:21,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:57:21,953 INFO L225 Difference]: With dead ends: 6957 [2021-08-27 10:57:21,954 INFO L226 Difference]: Without dead ends: 6956 [2021-08-27 10:57:21,955 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 725.2ms TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2021-08-27 10:57:21,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6956 states. [2021-08-27 10:57:21,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6956 to 3594. [2021-08-27 10:57:21,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3594 states, 3592 states have (on average 1.1628619153674833) internal successors, (4177), 3593 states have internal predecessors, (4177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:57:21,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3594 states to 3594 states and 4177 transitions. [2021-08-27 10:57:21,998 INFO L78 Accepts]: Start accepts. Automaton has 3594 states and 4177 transitions. Word has length 268 [2021-08-27 10:57:21,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:57:21,999 INFO L470 AbstractCegarLoop]: Abstraction has 3594 states and 4177 transitions. [2021-08-27 10:57:21,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 5.826086956521739) internal successors, (268), 46 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:57:21,999 INFO L276 IsEmpty]: Start isEmpty. Operand 3594 states and 4177 transitions. [2021-08-27 10:57:22,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2021-08-27 10:57:22,000 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:57:22,001 INFO L512 BasicCegarLoop]: trace histogram [45, 44, 44, 31, 31, 31, 14, 14, 14, 1, 1] [2021-08-27 10:57:22,025 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2021-08-27 10:57:22,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-08-27 10:57:22,213 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:57:22,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:57:22,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1433281964, now seen corresponding path program 22 times [2021-08-27 10:57:22,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:57:22,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273549469] [2021-08-27 10:57:22,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:57:22,213 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:57:22,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:57:22,647 INFO L134 CoverageAnalysis]: Checked inductivity of 5028 backedges. 1669 proven. 2852 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2021-08-27 10:57:22,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:57:22,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273549469] [2021-08-27 10:57:22,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273549469] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:57:22,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022225420] [2021-08-27 10:57:22,648 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-27 10:57:22,648 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:57:22,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:57:22,649 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:57:22,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-08-27 10:57:25,823 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-27 10:57:25,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:57:25,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 33 conjunts are in the unsatisfiable core [2021-08-27 10:57:25,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:57:26,450 INFO L134 CoverageAnalysis]: Checked inductivity of 5028 backedges. 1669 proven. 2852 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2021-08-27 10:57:26,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022225420] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:57:26,450 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:57:26,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-08-27 10:57:26,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902306004] [2021-08-27 10:57:26,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-08-27 10:57:26,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:57:26,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-08-27 10:57:26,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-08-27 10:57:26,451 INFO L87 Difference]: Start difference. First operand 3594 states and 4177 transitions. Second operand has 34 states, 34 states have (on average 5.764705882352941) internal successors, (196), 33 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:57:26,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:57:26,556 INFO L93 Difference]: Finished difference Result 7015 states and 8182 transitions. [2021-08-27 10:57:26,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-08-27 10:57:26,556 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.764705882352941) internal successors, (196), 33 states have internal predecessors, (196), 0 states have call successors, (0), 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 270 [2021-08-27 10:57:26,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:57:26,559 INFO L225 Difference]: With dead ends: 7015 [2021-08-27 10:57:26,559 INFO L226 Difference]: Without dead ends: 3604 [2021-08-27 10:57:26,561 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 363.7ms TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-08-27 10:57:26,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3604 states. [2021-08-27 10:57:26,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3604 to 3600. [2021-08-27 10:57:26,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3600 states, 3598 states have (on average 1.1625903279599779) internal successors, (4183), 3599 states have internal predecessors, (4183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:57:26,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3600 states to 3600 states and 4183 transitions. [2021-08-27 10:57:26,600 INFO L78 Accepts]: Start accepts. Automaton has 3600 states and 4183 transitions. Word has length 270 [2021-08-27 10:57:26,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:57:26,601 INFO L470 AbstractCegarLoop]: Abstraction has 3600 states and 4183 transitions. [2021-08-27 10:57:26,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.764705882352941) internal successors, (196), 33 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:57:26,601 INFO L276 IsEmpty]: Start isEmpty. Operand 3600 states and 4183 transitions. [2021-08-27 10:57:26,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2021-08-27 10:57:26,602 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:57:26,602 INFO L512 BasicCegarLoop]: trace histogram [46, 46, 45, 45, 45, 45, 1, 1] [2021-08-27 10:57:26,627 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2021-08-27 10:57:26,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:57:26,803 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:57:26,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:57:26,803 INFO L82 PathProgramCache]: Analyzing trace with hash 907618448, now seen corresponding path program 44 times [2021-08-27 10:57:26,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:57:26,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119389871] [2021-08-27 10:57:26,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:57:26,803 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:57:26,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:57:27,634 INFO L134 CoverageAnalysis]: Checked inductivity of 6075 backedges. 0 proven. 6075 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:57:27,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:57:27,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119389871] [2021-08-27 10:57:27,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119389871] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:57:27,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814039289] [2021-08-27 10:57:27,634 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 10:57:27,634 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:57:27,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:57:27,635 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:57:27,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2021-08-27 10:57:30,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 10:57:30,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:57:30,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 47 conjunts are in the unsatisfiable core [2021-08-27 10:57:30,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:57:31,628 INFO L134 CoverageAnalysis]: Checked inductivity of 6075 backedges. 0 proven. 6075 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:57:31,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814039289] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:57:31,628 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:57:31,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2021-08-27 10:57:31,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666158993] [2021-08-27 10:57:31,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-08-27 10:57:31,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:57:31,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-08-27 10:57:31,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-08-27 10:57:31,629 INFO L87 Difference]: Start difference. First operand 3600 states and 4183 transitions. Second operand has 48 states, 47 states have (on average 5.829787234042553) internal successors, (274), 47 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:57:31,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:57:31,977 INFO L93 Difference]: Finished difference Result 7139 states and 8318 transitions. [2021-08-27 10:57:31,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-08-27 10:57:31,977 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.829787234042553) internal successors, (274), 47 states have internal predecessors, (274), 0 states have call successors, (0), 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 274 [2021-08-27 10:57:31,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:57:31,982 INFO L225 Difference]: With dead ends: 7139 [2021-08-27 10:57:31,982 INFO L226 Difference]: Without dead ends: 7138 [2021-08-27 10:57:31,983 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 739.3ms TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-08-27 10:57:31,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7138 states. [2021-08-27 10:57:32,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7138 to 3687. [2021-08-27 10:57:32,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3687 states, 3685 states have (on average 1.162822252374491) internal successors, (4285), 3686 states have internal predecessors, (4285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:57:32,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3687 states to 3687 states and 4285 transitions. [2021-08-27 10:57:32,020 INFO L78 Accepts]: Start accepts. Automaton has 3687 states and 4285 transitions. Word has length 274 [2021-08-27 10:57:32,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:57:32,020 INFO L470 AbstractCegarLoop]: Abstraction has 3687 states and 4285 transitions. [2021-08-27 10:57:32,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.829787234042553) internal successors, (274), 47 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:57:32,020 INFO L276 IsEmpty]: Start isEmpty. Operand 3687 states and 4285 transitions. [2021-08-27 10:57:32,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2021-08-27 10:57:32,021 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:57:32,022 INFO L512 BasicCegarLoop]: trace histogram [46, 45, 45, 32, 32, 32, 14, 14, 14, 1, 1] [2021-08-27 10:57:32,047 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2021-08-27 10:57:32,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:57:32,222 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:57:32,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:57:32,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1168277339, now seen corresponding path program 23 times [2021-08-27 10:57:32,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:57:32,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829183833] [2021-08-27 10:57:32,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:57:32,223 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:57:32,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:57:32,688 INFO L134 CoverageAnalysis]: Checked inductivity of 5269 backedges. 1722 proven. 3040 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2021-08-27 10:57:32,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:57:32,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829183833] [2021-08-27 10:57:32,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829183833] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:57:32,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990099228] [2021-08-27 10:57:32,689 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-27 10:57:32,689 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:57:32,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:57:32,690 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:57:32,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2021-08-27 10:57:36,022 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2021-08-27 10:57:36,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:57:36,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 34 conjunts are in the unsatisfiable core [2021-08-27 10:57:36,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:57:36,650 INFO L134 CoverageAnalysis]: Checked inductivity of 5269 backedges. 1722 proven. 3040 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2021-08-27 10:57:36,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990099228] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:57:36,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:57:36,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2021-08-27 10:57:36,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765101626] [2021-08-27 10:57:36,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-08-27 10:57:36,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:57:36,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-08-27 10:57:36,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-08-27 10:57:36,651 INFO L87 Difference]: Start difference. First operand 3687 states and 4285 transitions. Second operand has 35 states, 35 states have (on average 5.771428571428571) internal successors, (202), 34 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:57:36,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:57:36,757 INFO L93 Difference]: Finished difference Result 7195 states and 8392 transitions. [2021-08-27 10:57:36,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-27 10:57:36,757 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.771428571428571) internal successors, (202), 34 states have internal predecessors, (202), 0 states have call successors, (0), 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 276 [2021-08-27 10:57:36,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:57:36,760 INFO L225 Difference]: With dead ends: 7195 [2021-08-27 10:57:36,760 INFO L226 Difference]: Without dead ends: 3697 [2021-08-27 10:57:36,762 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 393.5ms TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-08-27 10:57:36,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3697 states. [2021-08-27 10:57:36,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3697 to 3693. [2021-08-27 10:57:36,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3693 states, 3691 states have (on average 1.1625575724735844) internal successors, (4291), 3692 states have internal predecessors, (4291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:57:36,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3693 states to 3693 states and 4291 transitions. [2021-08-27 10:57:36,800 INFO L78 Accepts]: Start accepts. Automaton has 3693 states and 4291 transitions. Word has length 276 [2021-08-27 10:57:36,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:57:36,800 INFO L470 AbstractCegarLoop]: Abstraction has 3693 states and 4291 transitions. [2021-08-27 10:57:36,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 5.771428571428571) internal successors, (202), 34 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:57:36,800 INFO L276 IsEmpty]: Start isEmpty. Operand 3693 states and 4291 transitions. [2021-08-27 10:57:36,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2021-08-27 10:57:36,802 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:57:36,802 INFO L512 BasicCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 1, 1] [2021-08-27 10:57:36,828 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2021-08-27 10:57:37,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2021-08-27 10:57:37,002 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:57:37,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:57:37,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1920966903, now seen corresponding path program 45 times [2021-08-27 10:57:37,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:57:37,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580206908] [2021-08-27 10:57:37,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:57:37,003 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:57:37,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:57:37,894 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:57:37,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:57:37,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580206908] [2021-08-27 10:57:37,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580206908] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:57:37,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935780569] [2021-08-27 10:57:37,894 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 10:57:37,894 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:57:37,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:57:37,895 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:57:37,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2021-08-27 10:57:41,373 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2021-08-27 10:57:41,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:57:41,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 48 conjunts are in the unsatisfiable core [2021-08-27 10:57:41,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:57:42,035 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:57:42,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935780569] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:57:42,035 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:57:42,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2021-08-27 10:57:42,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760285436] [2021-08-27 10:57:42,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-08-27 10:57:42,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:57:42,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-08-27 10:57:42,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-08-27 10:57:42,036 INFO L87 Difference]: Start difference. First operand 3693 states and 4291 transitions. Second operand has 49 states, 48 states have (on average 5.833333333333333) internal successors, (280), 48 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:57:42,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:57:42,371 INFO L93 Difference]: Finished difference Result 7321 states and 8530 transitions. [2021-08-27 10:57:42,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-08-27 10:57:42,371 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 5.833333333333333) internal successors, (280), 48 states have internal predecessors, (280), 0 states have call successors, (0), 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 280 [2021-08-27 10:57:42,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:57:42,377 INFO L225 Difference]: With dead ends: 7321 [2021-08-27 10:57:42,377 INFO L226 Difference]: Without dead ends: 7320 [2021-08-27 10:57:42,378 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 797.7ms TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-08-27 10:57:42,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7320 states. [2021-08-27 10:57:42,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7320 to 3780. [2021-08-27 10:57:42,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3780 states, 3778 states have (on average 1.1627845420857597) internal successors, (4393), 3779 states have internal predecessors, (4393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:57:42,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3780 states to 3780 states and 4393 transitions. [2021-08-27 10:57:42,422 INFO L78 Accepts]: Start accepts. Automaton has 3780 states and 4393 transitions. Word has length 280 [2021-08-27 10:57:42,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:57:42,423 INFO L470 AbstractCegarLoop]: Abstraction has 3780 states and 4393 transitions. [2021-08-27 10:57:42,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 5.833333333333333) internal successors, (280), 48 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:57:42,423 INFO L276 IsEmpty]: Start isEmpty. Operand 3780 states and 4393 transitions. [2021-08-27 10:57:42,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2021-08-27 10:57:42,424 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:57:42,424 INFO L512 BasicCegarLoop]: trace histogram [47, 46, 46, 33, 33, 33, 14, 14, 14, 1, 1] [2021-08-27 10:57:42,451 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2021-08-27 10:57:42,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:57:42,625 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:57:42,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:57:42,625 INFO L82 PathProgramCache]: Analyzing trace with hash -724501282, now seen corresponding path program 24 times [2021-08-27 10:57:42,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:57:42,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128873093] [2021-08-27 10:57:42,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:57:42,625 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:57:42,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:57:43,125 INFO L134 CoverageAnalysis]: Checked inductivity of 5516 backedges. 1775 proven. 3234 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2021-08-27 10:57:43,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:57:43,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128873093] [2021-08-27 10:57:43,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128873093] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:57:43,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043866299] [2021-08-27 10:57:43,126 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-27 10:57:43,126 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:57:43,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:57:43,129 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:57:43,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2021-08-27 10:57:46,718 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 29 check-sat command(s) [2021-08-27 10:57:46,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:57:46,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 17 conjunts are in the unsatisfiable core [2021-08-27 10:57:46,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:57:47,774 INFO L134 CoverageAnalysis]: Checked inductivity of 5516 backedges. 2045 proven. 619 refuted. 0 times theorem prover too weak. 2852 trivial. 0 not checked. [2021-08-27 10:57:47,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043866299] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:57:47,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:57:47,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 17] total 52 [2021-08-27 10:57:47,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937041478] [2021-08-27 10:57:47,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-08-27 10:57:47,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:57:47,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-08-27 10:57:47,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2021-08-27 10:57:47,775 INFO L87 Difference]: Start difference. First operand 3780 states and 4393 transitions. Second operand has 52 states, 52 states have (on average 5.9423076923076925) internal successors, (309), 52 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:57:47,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:57:47,990 INFO L93 Difference]: Finished difference Result 7805 states and 9165 transitions. [2021-08-27 10:57:47,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-08-27 10:57:47,990 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.9423076923076925) internal successors, (309), 52 states have internal predecessors, (309), 0 states have call successors, (0), 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 282 [2021-08-27 10:57:47,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:57:47,993 INFO L225 Difference]: With dead ends: 7805 [2021-08-27 10:57:47,993 INFO L226 Difference]: Without dead ends: 4220 [2021-08-27 10:57:47,995 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 892.6ms TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2021-08-27 10:57:47,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4220 states. [2021-08-27 10:57:48,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4220 to 4188. [2021-08-27 10:57:48,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4188 states, 4186 states have (on average 1.1624462494027712) internal successors, (4866), 4187 states have internal predecessors, (4866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:57:48,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4188 states to 4188 states and 4866 transitions. [2021-08-27 10:57:48,043 INFO L78 Accepts]: Start accepts. Automaton has 4188 states and 4866 transitions. Word has length 282 [2021-08-27 10:57:48,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:57:48,043 INFO L470 AbstractCegarLoop]: Abstraction has 4188 states and 4866 transitions. [2021-08-27 10:57:48,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.9423076923076925) internal successors, (309), 52 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:57:48,043 INFO L276 IsEmpty]: Start isEmpty. Operand 4188 states and 4866 transitions. [2021-08-27 10:57:48,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2021-08-27 10:57:48,045 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:57:48,045 INFO L512 BasicCegarLoop]: trace histogram [48, 48, 47, 47, 47, 47, 1, 1] [2021-08-27 10:57:48,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2021-08-27 10:57:48,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:57:48,256 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:57:48,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:57:48,256 INFO L82 PathProgramCache]: Analyzing trace with hash 217650882, now seen corresponding path program 46 times [2021-08-27 10:57:48,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:57:48,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540262825] [2021-08-27 10:57:48,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:57:48,256 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:57:48,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:57:49,208 INFO L134 CoverageAnalysis]: Checked inductivity of 6627 backedges. 0 proven. 6627 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:57:49,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:57:49,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540262825] [2021-08-27 10:57:49,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540262825] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:57:49,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122930002] [2021-08-27 10:57:49,208 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-27 10:57:49,209 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:57:49,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:57:49,209 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:57:49,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2021-08-27 10:57:52,860 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-27 10:57:52,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:57:52,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 49 conjunts are in the unsatisfiable core [2021-08-27 10:57:52,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:57:53,557 INFO L134 CoverageAnalysis]: Checked inductivity of 6627 backedges. 0 proven. 6627 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:57:53,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122930002] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:57:53,557 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:57:53,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2021-08-27 10:57:53,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470690521] [2021-08-27 10:57:53,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-08-27 10:57:53,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:57:53,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-08-27 10:57:53,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2021-08-27 10:57:53,558 INFO L87 Difference]: Start difference. First operand 4188 states and 4866 transitions. Second operand has 50 states, 49 states have (on average 5.836734693877551) internal successors, (286), 49 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:57:53,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:57:53,892 INFO L93 Difference]: Finished difference Result 8307 states and 9678 transitions. [2021-08-27 10:57:53,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-08-27 10:57:53,892 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 5.836734693877551) internal successors, (286), 49 states have internal predecessors, (286), 0 states have call successors, (0), 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 286 [2021-08-27 10:57:53,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:57:53,898 INFO L225 Difference]: With dead ends: 8307 [2021-08-27 10:57:53,898 INFO L226 Difference]: Without dead ends: 8306 [2021-08-27 10:57:53,899 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 851.1ms TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2021-08-27 10:57:53,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8306 states. [2021-08-27 10:57:53,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8306 to 4287. [2021-08-27 10:57:53,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4287 states, 4285 states have (on average 1.1626604434072345) internal successors, (4982), 4286 states have internal predecessors, (4982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:57:53,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4287 states to 4287 states and 4982 transitions. [2021-08-27 10:57:53,973 INFO L78 Accepts]: Start accepts. Automaton has 4287 states and 4982 transitions. Word has length 286 [2021-08-27 10:57:53,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:57:53,974 INFO L470 AbstractCegarLoop]: Abstraction has 4287 states and 4982 transitions. [2021-08-27 10:57:53,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 5.836734693877551) internal successors, (286), 49 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:57:53,974 INFO L276 IsEmpty]: Start isEmpty. Operand 4287 states and 4982 transitions. [2021-08-27 10:57:53,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2021-08-27 10:57:53,975 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:57:53,975 INFO L512 BasicCegarLoop]: trace histogram [49, 49, 48, 48, 48, 48, 1, 1] [2021-08-27 10:57:54,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2021-08-27 10:57:54,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:57:54,176 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:57:54,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:57:54,176 INFO L82 PathProgramCache]: Analyzing trace with hash -517120069, now seen corresponding path program 47 times [2021-08-27 10:57:54,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:57:54,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951815498] [2021-08-27 10:57:54,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:57:54,177 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:57:54,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:57:55,181 INFO L134 CoverageAnalysis]: Checked inductivity of 6912 backedges. 0 proven. 6912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:57:55,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:57:55,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951815498] [2021-08-27 10:57:55,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951815498] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:57:55,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943500211] [2021-08-27 10:57:55,182 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-27 10:57:55,182 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:57:55,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:57:55,182 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:57:55,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2021-08-27 10:57:58,934 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2021-08-27 10:57:58,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:57:58,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 50 conjunts are in the unsatisfiable core [2021-08-27 10:57:58,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:57:59,641 INFO L134 CoverageAnalysis]: Checked inductivity of 6912 backedges. 0 proven. 6912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:57:59,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943500211] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:57:59,641 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:57:59,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2021-08-27 10:57:59,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398934712] [2021-08-27 10:57:59,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-08-27 10:57:59,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:57:59,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-08-27 10:57:59,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2021-08-27 10:57:59,642 INFO L87 Difference]: Start difference. First operand 4287 states and 4982 transitions. Second operand has 51 states, 50 states have (on average 5.84) internal successors, (292), 50 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:58:00,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:58:00,003 INFO L93 Difference]: Finished difference Result 8507 states and 9912 transitions. [2021-08-27 10:58:00,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-08-27 10:58:00,004 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 5.84) internal successors, (292), 50 states have internal predecessors, (292), 0 states have call successors, (0), 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 292 [2021-08-27 10:58:00,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:58:00,010 INFO L225 Difference]: With dead ends: 8507 [2021-08-27 10:58:00,010 INFO L226 Difference]: Without dead ends: 8506 [2021-08-27 10:58:00,012 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 898.0ms TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2021-08-27 10:58:00,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8506 states. [2021-08-27 10:58:00,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8506 to 4386. [2021-08-27 10:58:00,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4386 states, 4384 states have (on average 1.1628649635036497) internal successors, (5098), 4385 states have internal predecessors, (5098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:58:00,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4386 states to 4386 states and 5098 transitions. [2021-08-27 10:58:00,091 INFO L78 Accepts]: Start accepts. Automaton has 4386 states and 5098 transitions. Word has length 292 [2021-08-27 10:58:00,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:58:00,091 INFO L470 AbstractCegarLoop]: Abstraction has 4386 states and 5098 transitions. [2021-08-27 10:58:00,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 5.84) internal successors, (292), 50 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:58:00,091 INFO L276 IsEmpty]: Start isEmpty. Operand 4386 states and 5098 transitions. [2021-08-27 10:58:00,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2021-08-27 10:58:00,093 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:58:00,093 INFO L512 BasicCegarLoop]: trace histogram [50, 50, 49, 49, 49, 49, 1, 1] [2021-08-27 10:58:00,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2021-08-27 10:58:00,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2021-08-27 10:58:00,305 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:58:00,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:58:00,305 INFO L82 PathProgramCache]: Analyzing trace with hash -218412556, now seen corresponding path program 48 times [2021-08-27 10:58:00,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:58:00,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772616302] [2021-08-27 10:58:00,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:58:00,306 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:58:00,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:58:01,335 INFO L134 CoverageAnalysis]: Checked inductivity of 7203 backedges. 0 proven. 7203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:58:01,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:58:01,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772616302] [2021-08-27 10:58:01,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772616302] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:58:01,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787765515] [2021-08-27 10:58:01,335 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-27 10:58:01,335 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:58:01,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:58:01,336 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:58:01,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2021-08-27 10:58:05,191 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 50 check-sat command(s) [2021-08-27 10:58:05,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:58:05,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 51 conjunts are in the unsatisfiable core [2021-08-27 10:58:05,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:58:05,898 INFO L134 CoverageAnalysis]: Checked inductivity of 7203 backedges. 0 proven. 7203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:58:05,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787765515] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:58:05,898 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:58:05,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2021-08-27 10:58:05,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346324914] [2021-08-27 10:58:05,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-08-27 10:58:05,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:58:05,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-08-27 10:58:05,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2021-08-27 10:58:05,899 INFO L87 Difference]: Start difference. First operand 4386 states and 5098 transitions. Second operand has 52 states, 51 states have (on average 5.8431372549019605) internal successors, (298), 51 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:58:06,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:58:06,291 INFO L93 Difference]: Finished difference Result 8707 states and 10146 transitions. [2021-08-27 10:58:06,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-08-27 10:58:06,292 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 5.8431372549019605) internal successors, (298), 51 states have internal predecessors, (298), 0 states have call successors, (0), 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 298 [2021-08-27 10:58:06,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:58:06,297 INFO L225 Difference]: With dead ends: 8707 [2021-08-27 10:58:06,297 INFO L226 Difference]: Without dead ends: 8706 [2021-08-27 10:58:06,298 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 882.9ms TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2021-08-27 10:58:06,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8706 states. [2021-08-27 10:58:06,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8706 to 4485. [2021-08-27 10:58:06,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4485 states, 4483 states have (on average 1.163060450591122) internal successors, (5214), 4484 states have internal predecessors, (5214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:58:06,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4485 states to 4485 states and 5214 transitions. [2021-08-27 10:58:06,351 INFO L78 Accepts]: Start accepts. Automaton has 4485 states and 5214 transitions. Word has length 298 [2021-08-27 10:58:06,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:58:06,351 INFO L470 AbstractCegarLoop]: Abstraction has 4485 states and 5214 transitions. [2021-08-27 10:58:06,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 5.8431372549019605) internal successors, (298), 51 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:58:06,351 INFO L276 IsEmpty]: Start isEmpty. Operand 4485 states and 5214 transitions. [2021-08-27 10:58:06,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2021-08-27 10:58:06,353 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:58:06,353 INFO L512 BasicCegarLoop]: trace histogram [51, 51, 50, 50, 50, 50, 1, 1] [2021-08-27 10:58:06,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2021-08-27 10:58:06,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:58:06,554 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:58:06,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:58:06,554 INFO L82 PathProgramCache]: Analyzing trace with hash -260774547, now seen corresponding path program 49 times [2021-08-27 10:58:06,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:58:06,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249806279] [2021-08-27 10:58:06,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:58:06,554 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:58:06,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:58:07,575 INFO L134 CoverageAnalysis]: Checked inductivity of 7500 backedges. 0 proven. 7500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:58:07,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:58:07,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249806279] [2021-08-27 10:58:07,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249806279] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:58:07,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865566950] [2021-08-27 10:58:07,576 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-27 10:58:07,576 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:58:07,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:58:07,577 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:58:07,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2021-08-27 10:58:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:58:11,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 52 conjunts are in the unsatisfiable core [2021-08-27 10:58:11,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:58:12,336 INFO L134 CoverageAnalysis]: Checked inductivity of 7500 backedges. 0 proven. 7500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:58:12,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865566950] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:58:12,336 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:58:12,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2021-08-27 10:58:12,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144798899] [2021-08-27 10:58:12,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-08-27 10:58:12,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:58:12,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-08-27 10:58:12,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2021-08-27 10:58:12,337 INFO L87 Difference]: Start difference. First operand 4485 states and 5214 transitions. Second operand has 53 states, 52 states have (on average 5.846153846153846) internal successors, (304), 52 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:58:12,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:58:12,706 INFO L93 Difference]: Finished difference Result 8907 states and 10380 transitions. [2021-08-27 10:58:12,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-08-27 10:58:12,706 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 5.846153846153846) internal successors, (304), 52 states have internal predecessors, (304), 0 states have call successors, (0), 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 304 [2021-08-27 10:58:12,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:58:12,712 INFO L225 Difference]: With dead ends: 8907 [2021-08-27 10:58:12,712 INFO L226 Difference]: Without dead ends: 8906 [2021-08-27 10:58:12,713 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 918.2ms TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2021-08-27 10:58:12,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8906 states. [2021-08-27 10:58:12,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8906 to 4584. [2021-08-27 10:58:12,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4584 states, 4582 states have (on average 1.1632474901789611) internal successors, (5330), 4583 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:58:12,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4584 states to 4584 states and 5330 transitions. [2021-08-27 10:58:12,765 INFO L78 Accepts]: Start accepts. Automaton has 4584 states and 5330 transitions. Word has length 304 [2021-08-27 10:58:12,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:58:12,765 INFO L470 AbstractCegarLoop]: Abstraction has 4584 states and 5330 transitions. [2021-08-27 10:58:12,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 5.846153846153846) internal successors, (304), 52 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:58:12,765 INFO L276 IsEmpty]: Start isEmpty. Operand 4584 states and 5330 transitions. [2021-08-27 10:58:12,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2021-08-27 10:58:12,767 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:58:12,767 INFO L512 BasicCegarLoop]: trace histogram [51, 50, 50, 35, 35, 35, 16, 16, 16, 1, 1] [2021-08-27 10:58:12,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2021-08-27 10:58:12,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:58:12,973 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:58:12,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:58:12,973 INFO L82 PathProgramCache]: Analyzing trace with hash 255768502, now seen corresponding path program 25 times [2021-08-27 10:58:12,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:58:12,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954955750] [2021-08-27 10:58:12,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:58:12,974 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:58:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:58:13,535 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 2165 proven. 3640 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2021-08-27 10:58:13,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:58:13,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954955750] [2021-08-27 10:58:13,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954955750] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:58:13,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270120042] [2021-08-27 10:58:13,536 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-27 10:58:13,536 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:58:13,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:58:13,536 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:58:13,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2021-08-27 10:58:17,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:58:17,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 37 conjunts are in the unsatisfiable core [2021-08-27 10:58:17,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:58:18,377 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 2165 proven. 3640 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2021-08-27 10:58:18,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270120042] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:58:18,377 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:58:18,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2021-08-27 10:58:18,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466360077] [2021-08-27 10:58:18,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-08-27 10:58:18,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:58:18,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-08-27 10:58:18,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2021-08-27 10:58:18,378 INFO L87 Difference]: Start difference. First operand 4584 states and 5330 transitions. Second operand has 38 states, 38 states have (on average 5.7894736842105265) internal successors, (220), 37 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) [2021-08-27 10:58:18,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:58:18,494 INFO L93 Difference]: Finished difference Result 8971 states and 10464 transitions. [2021-08-27 10:58:18,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-08-27 10:58:18,494 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.7894736842105265) internal successors, (220), 37 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 306 [2021-08-27 10:58:18,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:58:18,497 INFO L225 Difference]: With dead ends: 8971 [2021-08-27 10:58:18,497 INFO L226 Difference]: Without dead ends: 4594 [2021-08-27 10:58:18,500 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 478.0ms TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2021-08-27 10:58:18,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4594 states. [2021-08-27 10:58:18,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4594 to 4590. [2021-08-27 10:58:18,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4590 states, 4588 states have (on average 1.163034001743679) internal successors, (5336), 4589 states have internal predecessors, (5336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:58:18,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4590 states to 4590 states and 5336 transitions. [2021-08-27 10:58:18,553 INFO L78 Accepts]: Start accepts. Automaton has 4590 states and 5336 transitions. Word has length 306 [2021-08-27 10:58:18,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:58:18,553 INFO L470 AbstractCegarLoop]: Abstraction has 4590 states and 5336 transitions. [2021-08-27 10:58:18,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 5.7894736842105265) internal successors, (220), 37 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) [2021-08-27 10:58:18,553 INFO L276 IsEmpty]: Start isEmpty. Operand 4590 states and 5336 transitions. [2021-08-27 10:58:18,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2021-08-27 10:58:18,555 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:58:18,555 INFO L512 BasicCegarLoop]: trace histogram [52, 52, 51, 51, 51, 51, 1, 1] [2021-08-27 10:58:18,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2021-08-27 10:58:18,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-08-27 10:58:18,756 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:58:18,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:58:18,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1780465114, now seen corresponding path program 50 times [2021-08-27 10:58:18,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:58:18,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868279246] [2021-08-27 10:58:18,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:58:18,756 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:58:18,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:58:19,824 INFO L134 CoverageAnalysis]: Checked inductivity of 7803 backedges. 0 proven. 7803 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:58:19,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:58:19,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868279246] [2021-08-27 10:58:19,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868279246] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:58:19,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974211239] [2021-08-27 10:58:19,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 10:58:19,824 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:58:19,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:58:19,825 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:58:19,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2021-08-27 10:58:24,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 10:58:24,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:58:24,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 53 conjunts are in the unsatisfiable core [2021-08-27 10:58:24,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:58:24,800 INFO L134 CoverageAnalysis]: Checked inductivity of 7803 backedges. 0 proven. 7803 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:58:24,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974211239] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:58:24,800 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:58:24,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2021-08-27 10:58:24,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570202277] [2021-08-27 10:58:24,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-08-27 10:58:24,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:58:24,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-08-27 10:58:24,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2021-08-27 10:58:24,801 INFO L87 Difference]: Start difference. First operand 4590 states and 5336 transitions. Second operand has 54 states, 53 states have (on average 5.849056603773585) internal successors, (310), 53 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:58:25,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:58:25,178 INFO L93 Difference]: Finished difference Result 9113 states and 10620 transitions. [2021-08-27 10:58:25,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-08-27 10:58:25,178 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 5.849056603773585) internal successors, (310), 53 states have internal predecessors, (310), 0 states have call successors, (0), 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 310 [2021-08-27 10:58:25,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:58:25,185 INFO L225 Difference]: With dead ends: 9113 [2021-08-27 10:58:25,185 INFO L226 Difference]: Without dead ends: 9112 [2021-08-27 10:58:25,186 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 960.0ms TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2021-08-27 10:58:25,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9112 states. [2021-08-27 10:58:25,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9112 to 4689. [2021-08-27 10:58:25,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4689 states, 4687 states have (on average 1.1632174098570514) internal successors, (5452), 4688 states have internal predecessors, (5452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:58:25,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4689 states to 4689 states and 5452 transitions. [2021-08-27 10:58:25,240 INFO L78 Accepts]: Start accepts. Automaton has 4689 states and 5452 transitions. Word has length 310 [2021-08-27 10:58:25,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:58:25,240 INFO L470 AbstractCegarLoop]: Abstraction has 4689 states and 5452 transitions. [2021-08-27 10:58:25,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 5.849056603773585) internal successors, (310), 53 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:58:25,240 INFO L276 IsEmpty]: Start isEmpty. Operand 4689 states and 5452 transitions. [2021-08-27 10:58:25,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2021-08-27 10:58:25,242 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:58:25,242 INFO L512 BasicCegarLoop]: trace histogram [52, 51, 51, 36, 36, 36, 16, 16, 16, 1, 1] [2021-08-27 10:58:25,270 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2021-08-27 10:58:25,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:58:25,443 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:58:25,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:58:25,443 INFO L82 PathProgramCache]: Analyzing trace with hash 122014255, now seen corresponding path program 26 times [2021-08-27 10:58:25,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:58:25,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67276565] [2021-08-27 10:58:25,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:58:25,444 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:58:25,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:58:26,045 INFO L134 CoverageAnalysis]: Checked inductivity of 6753 backedges. 2226 proven. 3852 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2021-08-27 10:58:26,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:58:26,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67276565] [2021-08-27 10:58:26,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67276565] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:58:26,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537529691] [2021-08-27 10:58:26,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 10:58:26,046 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:58:26,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:58:26,047 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:58:26,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2021-08-27 10:58:30,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 10:58:30,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:58:30,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 38 conjunts are in the unsatisfiable core [2021-08-27 10:58:30,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:58:31,135 INFO L134 CoverageAnalysis]: Checked inductivity of 6753 backedges. 2226 proven. 3852 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2021-08-27 10:58:31,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537529691] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:58:31,135 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:58:31,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2021-08-27 10:58:31,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143946959] [2021-08-27 10:58:31,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-08-27 10:58:31,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:58:31,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-08-27 10:58:31,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-08-27 10:58:31,136 INFO L87 Difference]: Start difference. First operand 4689 states and 5452 transitions. Second operand has 39 states, 39 states have (on average 5.794871794871795) internal successors, (226), 38 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:58:31,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:58:31,279 INFO L93 Difference]: Finished difference Result 9175 states and 10702 transitions. [2021-08-27 10:58:31,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-08-27 10:58:31,280 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.794871794871795) internal successors, (226), 38 states have internal predecessors, (226), 0 states have call successors, (0), 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 312 [2021-08-27 10:58:31,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:58:31,284 INFO L225 Difference]: With dead ends: 9175 [2021-08-27 10:58:31,284 INFO L226 Difference]: Without dead ends: 4699 [2021-08-27 10:58:31,288 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 496.5ms TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-08-27 10:58:31,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4699 states. [2021-08-27 10:58:31,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4699 to 4695. [2021-08-27 10:58:31,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4695 states, 4693 states have (on average 1.1630087364159387) internal successors, (5458), 4694 states have internal predecessors, (5458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:58:31,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4695 states to 4695 states and 5458 transitions. [2021-08-27 10:58:31,347 INFO L78 Accepts]: Start accepts. Automaton has 4695 states and 5458 transitions. Word has length 312 [2021-08-27 10:58:31,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:58:31,347 INFO L470 AbstractCegarLoop]: Abstraction has 4695 states and 5458 transitions. [2021-08-27 10:58:31,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 5.794871794871795) internal successors, (226), 38 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:58:31,347 INFO L276 IsEmpty]: Start isEmpty. Operand 4695 states and 5458 transitions. [2021-08-27 10:58:31,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2021-08-27 10:58:31,349 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:58:31,349 INFO L512 BasicCegarLoop]: trace histogram [53, 53, 52, 52, 52, 52, 1, 1] [2021-08-27 10:58:31,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2021-08-27 10:58:31,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:58:31,550 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:58:31,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:58:31,550 INFO L82 PathProgramCache]: Analyzing trace with hash 917991455, now seen corresponding path program 51 times [2021-08-27 10:58:31,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:58:31,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261975952] [2021-08-27 10:58:31,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:58:31,550 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:58:31,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:58:32,688 INFO L134 CoverageAnalysis]: Checked inductivity of 8112 backedges. 0 proven. 8112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:58:32,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:58:32,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261975952] [2021-08-27 10:58:32,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261975952] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:58:32,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351356720] [2021-08-27 10:58:32,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 10:58:32,689 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:58:32,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:58:32,690 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:58:32,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2021-08-27 10:58:37,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 53 check-sat command(s) [2021-08-27 10:58:37,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:58:37,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 54 conjunts are in the unsatisfiable core [2021-08-27 10:58:37,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:58:37,850 INFO L134 CoverageAnalysis]: Checked inductivity of 8112 backedges. 0 proven. 8112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:58:37,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351356720] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:58:37,850 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:58:37,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2021-08-27 10:58:37,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771023593] [2021-08-27 10:58:37,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-08-27 10:58:37,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:58:37,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-08-27 10:58:37,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2021-08-27 10:58:37,851 INFO L87 Difference]: Start difference. First operand 4695 states and 5458 transitions. Second operand has 55 states, 54 states have (on average 5.851851851851852) internal successors, (316), 54 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:58:38,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:58:38,249 INFO L93 Difference]: Finished difference Result 9319 states and 10860 transitions. [2021-08-27 10:58:38,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-08-27 10:58:38,250 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 5.851851851851852) internal successors, (316), 54 states have internal predecessors, (316), 0 states have call successors, (0), 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 316 [2021-08-27 10:58:38,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:58:38,257 INFO L225 Difference]: With dead ends: 9319 [2021-08-27 10:58:38,257 INFO L226 Difference]: Without dead ends: 9318 [2021-08-27 10:58:38,259 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1027.4ms TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2021-08-27 10:58:38,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9318 states. [2021-08-27 10:58:38,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9318 to 4794. [2021-08-27 10:58:38,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4794 states, 4792 states have (on average 1.1631886477462436) internal successors, (5574), 4793 states have internal predecessors, (5574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:58:38,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4794 states to 4794 states and 5574 transitions. [2021-08-27 10:58:38,327 INFO L78 Accepts]: Start accepts. Automaton has 4794 states and 5574 transitions. Word has length 316 [2021-08-27 10:58:38,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:58:38,327 INFO L470 AbstractCegarLoop]: Abstraction has 4794 states and 5574 transitions. [2021-08-27 10:58:38,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 5.851851851851852) internal successors, (316), 54 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:58:38,328 INFO L276 IsEmpty]: Start isEmpty. Operand 4794 states and 5574 transitions. [2021-08-27 10:58:38,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2021-08-27 10:58:38,330 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:58:38,330 INFO L512 BasicCegarLoop]: trace histogram [53, 52, 52, 37, 37, 37, 16, 16, 16, 1, 1] [2021-08-27 10:58:38,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2021-08-27 10:58:38,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:58:38,531 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:58:38,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:58:38,531 INFO L82 PathProgramCache]: Analyzing trace with hash -821469720, now seen corresponding path program 27 times [2021-08-27 10:58:38,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:58:38,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503927348] [2021-08-27 10:58:38,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:58:38,531 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:58:38,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:58:39,138 INFO L134 CoverageAnalysis]: Checked inductivity of 7032 backedges. 2287 proven. 4070 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2021-08-27 10:58:39,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:58:39,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503927348] [2021-08-27 10:58:39,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503927348] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:58:39,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087031918] [2021-08-27 10:58:39,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 10:58:39,139 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:58:39,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:58:39,140 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:58:39,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2021-08-27 10:58:43,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2021-08-27 10:58:43,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:58:43,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-27 10:58:43,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:58:44,952 INFO L134 CoverageAnalysis]: Checked inductivity of 7032 backedges. 2589 proven. 803 refuted. 0 times theorem prover too weak. 3640 trivial. 0 not checked. [2021-08-27 10:58:44,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087031918] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:58:44,953 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:58:44,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 19] total 58 [2021-08-27 10:58:44,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904736907] [2021-08-27 10:58:44,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-08-27 10:58:44,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:58:44,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-08-27 10:58:44,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2021-08-27 10:58:44,954 INFO L87 Difference]: Start difference. First operand 4794 states and 5574 transitions. Second operand has 58 states, 58 states have (on average 5.948275862068965) internal successors, (345), 58 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:58:45,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:58:45,235 INFO L93 Difference]: Finished difference Result 9861 states and 11571 transitions. [2021-08-27 10:58:45,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-08-27 10:58:45,236 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 5.948275862068965) internal successors, (345), 58 states have internal predecessors, (345), 0 states have call successors, (0), 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 318 [2021-08-27 10:58:45,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:58:45,241 INFO L225 Difference]: With dead ends: 9861 [2021-08-27 10:58:45,241 INFO L226 Difference]: Without dead ends: 5286 [2021-08-27 10:58:45,245 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1109.9ms TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2021-08-27 10:58:45,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5286 states. [2021-08-27 10:58:45,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5286 to 5250. [2021-08-27 10:58:45,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5250 states, 5248 states have (on average 1.162919207317073) internal successors, (6103), 5249 states have internal predecessors, (6103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:58:45,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5250 states to 5250 states and 6103 transitions. [2021-08-27 10:58:45,320 INFO L78 Accepts]: Start accepts. Automaton has 5250 states and 6103 transitions. Word has length 318 [2021-08-27 10:58:45,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:58:45,320 INFO L470 AbstractCegarLoop]: Abstraction has 5250 states and 6103 transitions. [2021-08-27 10:58:45,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 5.948275862068965) internal successors, (345), 58 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:58:45,320 INFO L276 IsEmpty]: Start isEmpty. Operand 5250 states and 6103 transitions. [2021-08-27 10:58:45,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-08-27 10:58:45,322 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:58:45,322 INFO L512 BasicCegarLoop]: trace histogram [54, 54, 53, 53, 53, 53, 1, 1] [2021-08-27 10:58:45,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2021-08-27 10:58:45,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable83 [2021-08-27 10:58:45,523 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:58:45,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:58:45,523 INFO L82 PathProgramCache]: Analyzing trace with hash -2035777704, now seen corresponding path program 52 times [2021-08-27 10:58:45,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:58:45,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903265473] [2021-08-27 10:58:45,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:58:45,524 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:58:45,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:58:46,720 INFO L134 CoverageAnalysis]: Checked inductivity of 8427 backedges. 0 proven. 8427 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:58:46,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:58:46,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903265473] [2021-08-27 10:58:46,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903265473] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:58:46,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071888641] [2021-08-27 10:58:46,721 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-27 10:58:46,721 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:58:46,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:58:46,722 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:58:46,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2021-08-27 10:58:51,377 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-27 10:58:51,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:58:51,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 53 conjunts are in the unsatisfiable core [2021-08-27 10:58:51,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:58:54,286 INFO L134 CoverageAnalysis]: Checked inductivity of 8427 backedges. 8419 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-08-27 10:58:54,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071888641] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:58:54,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-27 10:58:54,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [54] total 107 [2021-08-27 10:58:54,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252818626] [2021-08-27 10:58:54,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-08-27 10:58:54,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:58:54,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-08-27 10:58:54,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2970, Invalid=8586, Unknown=0, NotChecked=0, Total=11556 [2021-08-27 10:58:54,288 INFO L87 Difference]: Start difference. First operand 5250 states and 6103 transitions. Second operand has 54 states, 54 states have (on average 5.851851851851852) internal successors, (316), 53 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:58:54,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:58:54,661 INFO L93 Difference]: Finished difference Result 6823 states and 7965 transitions. [2021-08-27 10:58:54,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-08-27 10:58:54,662 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 5.851851851851852) internal successors, (316), 53 states have internal predecessors, (316), 0 states have call successors, (0), 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 322 [2021-08-27 10:58:54,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:58:54,663 INFO L225 Difference]: With dead ends: 6823 [2021-08-27 10:58:54,663 INFO L226 Difference]: Without dead ends: 1804 [2021-08-27 10:58:54,666 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2756 ImplicationChecksByTransitivity, 3137.7ms TimeCoverageRelationStatistics Valid=2970, Invalid=8586, Unknown=0, NotChecked=0, Total=11556 [2021-08-27 10:58:54,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1804 states. [2021-08-27 10:58:54,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1804 to 415. [2021-08-27 10:58:54,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 414 states have (on average 1.0314009661835748) internal successors, (427), 414 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:58:54,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 427 transitions. [2021-08-27 10:58:54,674 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 427 transitions. Word has length 322 [2021-08-27 10:58:54,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:58:54,674 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 427 transitions. [2021-08-27 10:58:54,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 5.851851851851852) internal successors, (316), 53 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:58:54,674 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 427 transitions. [2021-08-27 10:58:54,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2021-08-27 10:58:54,675 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:58:54,675 INFO L512 BasicCegarLoop]: trace histogram [57, 56, 56, 39, 39, 39, 18, 18, 18, 1, 1] [2021-08-27 10:58:54,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2021-08-27 10:58:54,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:58:54,876 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:58:54,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:58:54,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1246320448, now seen corresponding path program 28 times [2021-08-27 10:58:54,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:58:54,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190997613] [2021-08-27 10:58:54,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:58:54,877 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:58:54,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:58:55,564 INFO L134 CoverageAnalysis]: Checked inductivity of 8116 backedges. 2725 proven. 4524 refuted. 0 times theorem prover too weak. 867 trivial. 0 not checked. [2021-08-27 10:58:55,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:58:55,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190997613] [2021-08-27 10:58:55,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190997613] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:58:55,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065076860] [2021-08-27 10:58:55,565 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-27 10:58:55,565 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:58:55,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:58:55,566 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:58:55,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2021-08-27 10:59:00,381 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-27 10:59:00,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:59:00,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 41 conjunts are in the unsatisfiable core [2021-08-27 10:59:00,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:59:01,248 INFO L134 CoverageAnalysis]: Checked inductivity of 8116 backedges. 2725 proven. 4524 refuted. 0 times theorem prover too weak. 867 trivial. 0 not checked. [2021-08-27 10:59:01,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065076860] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:59:01,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:59:01,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2021-08-27 10:59:01,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22299882] [2021-08-27 10:59:01,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-08-27 10:59:01,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:59:01,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-08-27 10:59:01,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2021-08-27 10:59:01,250 INFO L87 Difference]: Start difference. First operand 415 states and 427 transitions. Second operand has 42 states, 42 states have (on average 5.809523809523809) internal successors, (244), 41 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:59:01,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:59:01,368 INFO L93 Difference]: Finished difference Result 521 states and 533 transitions. [2021-08-27 10:59:01,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-08-27 10:59:01,368 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 5.809523809523809) internal successors, (244), 41 states have internal predecessors, (244), 0 states have call successors, (0), 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 342 [2021-08-27 10:59:01,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:59:01,369 INFO L225 Difference]: With dead ends: 521 [2021-08-27 10:59:01,369 INFO L226 Difference]: Without dead ends: 415 [2021-08-27 10:59:01,369 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 594.1ms TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2021-08-27 10:59:01,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2021-08-27 10:59:01,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2021-08-27 10:59:01,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 414 states have (on average 1.0289855072463767) internal successors, (426), 414 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:59:01,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 426 transitions. [2021-08-27 10:59:01,376 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 426 transitions. Word has length 342 [2021-08-27 10:59:01,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:59:01,376 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 426 transitions. [2021-08-27 10:59:01,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 5.809523809523809) internal successors, (244), 41 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:59:01,377 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 426 transitions. [2021-08-27 10:59:01,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2021-08-27 10:59:01,378 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:59:01,378 INFO L512 BasicCegarLoop]: trace histogram [58, 57, 57, 40, 40, 40, 18, 18, 18, 1, 1] [2021-08-27 10:59:01,416 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2021-08-27 10:59:01,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:59:01,593 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:59:01,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:59:01,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1922059591, now seen corresponding path program 29 times [2021-08-27 10:59:01,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:59:01,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000957968] [2021-08-27 10:59:01,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:59:01,593 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:59:01,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:59:02,323 INFO L134 CoverageAnalysis]: Checked inductivity of 8421 backedges. 2794 proven. 4760 refuted. 0 times theorem prover too weak. 867 trivial. 0 not checked. [2021-08-27 10:59:02,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:59:02,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000957968] [2021-08-27 10:59:02,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000957968] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:59:02,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640951727] [2021-08-27 10:59:02,324 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-27 10:59:02,324 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:59:02,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:59:02,326 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:59:02,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2021-08-27 10:59:07,192 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2021-08-27 10:59:07,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:59:07,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 42 conjunts are in the unsatisfiable core [2021-08-27 10:59:07,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:59:07,948 INFO L134 CoverageAnalysis]: Checked inductivity of 8421 backedges. 2794 proven. 4760 refuted. 0 times theorem prover too weak. 867 trivial. 0 not checked. [2021-08-27 10:59:07,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640951727] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:59:07,949 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:59:07,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2021-08-27 10:59:07,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319438377] [2021-08-27 10:59:07,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-08-27 10:59:07,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:59:07,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-08-27 10:59:07,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2021-08-27 10:59:07,950 INFO L87 Difference]: Start difference. First operand 415 states and 426 transitions. Second operand has 43 states, 43 states have (on average 5.813953488372093) internal successors, (250), 42 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:59:08,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:59:08,074 INFO L93 Difference]: Finished difference Result 521 states and 532 transitions. [2021-08-27 10:59:08,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-08-27 10:59:08,075 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 5.813953488372093) internal successors, (250), 42 states have internal predecessors, (250), 0 states have call successors, (0), 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 348 [2021-08-27 10:59:08,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:59:08,075 INFO L225 Difference]: With dead ends: 521 [2021-08-27 10:59:08,075 INFO L226 Difference]: Without dead ends: 415 [2021-08-27 10:59:08,076 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 616.8ms TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2021-08-27 10:59:08,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2021-08-27 10:59:08,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2021-08-27 10:59:08,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 414 states have (on average 1.0265700483091786) internal successors, (425), 414 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:59:08,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 425 transitions. [2021-08-27 10:59:08,081 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 425 transitions. Word has length 348 [2021-08-27 10:59:08,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:59:08,081 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 425 transitions. [2021-08-27 10:59:08,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 5.813953488372093) internal successors, (250), 42 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:59:08,081 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 425 transitions. [2021-08-27 10:59:08,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2021-08-27 10:59:08,083 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:59:08,083 INFO L512 BasicCegarLoop]: trace histogram [59, 58, 58, 41, 41, 41, 18, 18, 18, 1, 1] [2021-08-27 10:59:08,113 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2021-08-27 10:59:08,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2021-08-27 10:59:08,297 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:59:08,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:59:08,297 INFO L82 PathProgramCache]: Analyzing trace with hash -2106745358, now seen corresponding path program 30 times [2021-08-27 10:59:08,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:59:08,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519324025] [2021-08-27 10:59:08,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:59:08,297 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:59:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:59:09,022 INFO L134 CoverageAnalysis]: Checked inductivity of 8732 backedges. 2863 proven. 5002 refuted. 0 times theorem prover too weak. 867 trivial. 0 not checked. [2021-08-27 10:59:09,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:59:09,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519324025] [2021-08-27 10:59:09,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519324025] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:59:09,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994800276] [2021-08-27 10:59:09,023 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-27 10:59:09,023 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:59:09,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:59:09,024 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:59:09,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2021-08-27 10:59:14,003 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2021-08-27 10:59:14,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:59:14,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 21 conjunts are in the unsatisfiable core [2021-08-27 10:59:14,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:59:15,475 INFO L134 CoverageAnalysis]: Checked inductivity of 8732 backedges. 3197 proven. 1011 refuted. 0 times theorem prover too weak. 4524 trivial. 0 not checked. [2021-08-27 10:59:15,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994800276] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:59:15,476 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:59:15,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 21] total 64 [2021-08-27 10:59:15,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070579051] [2021-08-27 10:59:15,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-08-27 10:59:15,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:59:15,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-08-27 10:59:15,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2021-08-27 10:59:15,477 INFO L87 Difference]: Start difference. First operand 415 states and 425 transitions. Second operand has 64 states, 64 states have (on average 5.953125) internal successors, (381), 64 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:59:15,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:59:15,785 INFO L93 Difference]: Finished difference Result 534 states and 546 transitions. [2021-08-27 10:59:15,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-08-27 10:59:15,786 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 5.953125) internal successors, (381), 64 states have internal predecessors, (381), 0 states have call successors, (0), 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 354 [2021-08-27 10:59:15,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:59:15,786 INFO L225 Difference]: With dead ends: 534 [2021-08-27 10:59:15,786 INFO L226 Difference]: Without dead ends: 428 [2021-08-27 10:59:15,787 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1362.6ms TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2021-08-27 10:59:15,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-08-27 10:59:15,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 427. [2021-08-27 10:59:15,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 426 states have (on average 1.0211267605633803) internal successors, (435), 426 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:59:15,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 435 transitions. [2021-08-27 10:59:15,794 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 435 transitions. Word has length 354 [2021-08-27 10:59:15,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:59:15,795 INFO L470 AbstractCegarLoop]: Abstraction has 427 states and 435 transitions. [2021-08-27 10:59:15,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 5.953125) internal successors, (381), 64 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:59:15,795 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 435 transitions. [2021-08-27 10:59:15,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2021-08-27 10:59:15,797 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:59:15,797 INFO L512 BasicCegarLoop]: trace histogram [63, 62, 62, 43, 43, 43, 20, 20, 20, 1, 1] [2021-08-27 10:59:15,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2021-08-27 10:59:16,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:59:16,005 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:59:16,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:59:16,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1988655306, now seen corresponding path program 31 times [2021-08-27 10:59:16,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:59:16,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047713021] [2021-08-27 10:59:16,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:59:16,006 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:59:16,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:59:16,832 INFO L134 CoverageAnalysis]: Checked inductivity of 9936 backedges. 3349 proven. 5504 refuted. 0 times theorem prover too weak. 1083 trivial. 0 not checked. [2021-08-27 10:59:16,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:59:16,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047713021] [2021-08-27 10:59:16,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047713021] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:59:16,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232129389] [2021-08-27 10:59:16,832 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-27 10:59:16,832 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:59:16,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:59:16,834 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:59:16,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2021-08-27 10:59:21,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:59:21,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 45 conjunts are in the unsatisfiable core [2021-08-27 10:59:21,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:59:22,754 INFO L134 CoverageAnalysis]: Checked inductivity of 9936 backedges. 3349 proven. 5504 refuted. 0 times theorem prover too weak. 1083 trivial. 0 not checked. [2021-08-27 10:59:22,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232129389] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:59:22,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:59:22,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2021-08-27 10:59:22,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483859942] [2021-08-27 10:59:22,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-08-27 10:59:22,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:59:22,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-08-27 10:59:22,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-08-27 10:59:22,755 INFO L87 Difference]: Start difference. First operand 427 states and 435 transitions. Second operand has 46 states, 46 states have (on average 5.826086956521739) internal successors, (268), 45 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:59:22,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:59:22,880 INFO L93 Difference]: Finished difference Result 545 states and 553 transitions. [2021-08-27 10:59:22,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-08-27 10:59:22,881 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 5.826086956521739) internal successors, (268), 45 states have internal predecessors, (268), 0 states have call successors, (0), 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 378 [2021-08-27 10:59:22,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:59:22,881 INFO L225 Difference]: With dead ends: 545 [2021-08-27 10:59:22,881 INFO L226 Difference]: Without dead ends: 427 [2021-08-27 10:59:22,882 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 718.4ms TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-08-27 10:59:22,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2021-08-27 10:59:22,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2021-08-27 10:59:22,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 426 states have (on average 1.0187793427230047) internal successors, (434), 426 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) [2021-08-27 10:59:22,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 434 transitions. [2021-08-27 10:59:22,886 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 434 transitions. Word has length 378 [2021-08-27 10:59:22,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:59:22,887 INFO L470 AbstractCegarLoop]: Abstraction has 427 states and 434 transitions. [2021-08-27 10:59:22,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 5.826086956521739) internal successors, (268), 45 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:59:22,887 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 434 transitions. [2021-08-27 10:59:22,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2021-08-27 10:59:22,888 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:59:22,888 INFO L512 BasicCegarLoop]: trace histogram [64, 63, 63, 44, 44, 44, 20, 20, 20, 1, 1] [2021-08-27 10:59:22,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2021-08-27 10:59:23,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:59:23,113 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:59:23,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:59:23,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1435649469, now seen corresponding path program 32 times [2021-08-27 10:59:23,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:59:23,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887847684] [2021-08-27 10:59:23,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:59:23,114 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:59:23,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:59:23,942 INFO L134 CoverageAnalysis]: Checked inductivity of 10273 backedges. 3426 proven. 5764 refuted. 0 times theorem prover too weak. 1083 trivial. 0 not checked. [2021-08-27 10:59:23,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:59:23,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887847684] [2021-08-27 10:59:23,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887847684] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:59:23,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168395443] [2021-08-27 10:59:23,943 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 10:59:23,943 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:59:23,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:59:23,943 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:59:23,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2021-08-27 10:59:29,205 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 10:59:29,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:59:29,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 46 conjunts are in the unsatisfiable core [2021-08-27 10:59:29,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:59:30,082 INFO L134 CoverageAnalysis]: Checked inductivity of 10273 backedges. 3426 proven. 5764 refuted. 0 times theorem prover too weak. 1083 trivial. 0 not checked. [2021-08-27 10:59:30,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168395443] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:59:30,083 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:59:30,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2021-08-27 10:59:30,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408709710] [2021-08-27 10:59:30,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-08-27 10:59:30,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:59:30,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-08-27 10:59:30,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2021-08-27 10:59:30,084 INFO L87 Difference]: Start difference. First operand 427 states and 434 transitions. Second operand has 47 states, 47 states have (on average 5.829787234042553) internal successors, (274), 46 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:59:30,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:59:30,242 INFO L93 Difference]: Finished difference Result 545 states and 552 transitions. [2021-08-27 10:59:30,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-08-27 10:59:30,243 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 5.829787234042553) internal successors, (274), 46 states have internal predecessors, (274), 0 states have call successors, (0), 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 384 [2021-08-27 10:59:30,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:59:30,244 INFO L225 Difference]: With dead ends: 545 [2021-08-27 10:59:30,244 INFO L226 Difference]: Without dead ends: 427 [2021-08-27 10:59:30,244 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 722.4ms TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2021-08-27 10:59:30,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2021-08-27 10:59:30,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2021-08-27 10:59:30,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 426 states have (on average 1.016431924882629) internal successors, (433), 426 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) [2021-08-27 10:59:30,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 433 transitions. [2021-08-27 10:59:30,249 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 433 transitions. Word has length 384 [2021-08-27 10:59:30,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:59:30,249 INFO L470 AbstractCegarLoop]: Abstraction has 427 states and 433 transitions. [2021-08-27 10:59:30,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 5.829787234042553) internal successors, (274), 46 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:59:30,250 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 433 transitions. [2021-08-27 10:59:30,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2021-08-27 10:59:30,251 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:59:30,251 INFO L512 BasicCegarLoop]: trace histogram [65, 64, 64, 45, 45, 45, 20, 20, 20, 1, 1] [2021-08-27 10:59:30,283 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2021-08-27 10:59:30,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2021-08-27 10:59:30,457 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:59:30,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:59:30,457 INFO L82 PathProgramCache]: Analyzing trace with hash 342899964, now seen corresponding path program 33 times [2021-08-27 10:59:30,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:59:30,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635423565] [2021-08-27 10:59:30,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:59:30,457 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:59:30,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:59:31,435 INFO L134 CoverageAnalysis]: Checked inductivity of 10616 backedges. 3503 proven. 6030 refuted. 0 times theorem prover too weak. 1083 trivial. 0 not checked. [2021-08-27 10:59:31,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:59:31,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635423565] [2021-08-27 10:59:31,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635423565] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:59:31,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702428509] [2021-08-27 10:59:31,436 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 10:59:31,436 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:59:31,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:59:31,437 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:59:31,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2021-08-27 10:59:36,767 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2021-08-27 10:59:36,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:59:36,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 23 conjunts are in the unsatisfiable core [2021-08-27 10:59:36,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:59:38,478 INFO L134 CoverageAnalysis]: Checked inductivity of 10616 backedges. 3869 proven. 1243 refuted. 0 times theorem prover too weak. 5504 trivial. 0 not checked. [2021-08-27 10:59:38,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702428509] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:59:38,478 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:59:38,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 23] total 70 [2021-08-27 10:59:38,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072005130] [2021-08-27 10:59:38,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2021-08-27 10:59:38,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:59:38,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-08-27 10:59:38,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2021-08-27 10:59:38,480 INFO L87 Difference]: Start difference. First operand 427 states and 433 transitions. Second operand has 70 states, 70 states have (on average 5.957142857142857) internal successors, (417), 70 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) [2021-08-27 10:59:38,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:59:38,759 INFO L93 Difference]: Finished difference Result 558 states and 566 transitions. [2021-08-27 10:59:38,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-08-27 10:59:38,760 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 5.957142857142857) internal successors, (417), 70 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) Word has length 390 [2021-08-27 10:59:38,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:59:38,760 INFO L225 Difference]: With dead ends: 558 [2021-08-27 10:59:38,760 INFO L226 Difference]: Without dead ends: 440 [2021-08-27 10:59:38,761 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1712.1ms TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2021-08-27 10:59:38,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-08-27 10:59:38,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 439. [2021-08-27 10:59:38,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 438 states have (on average 1.0114155251141552) internal successors, (443), 438 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:59:38,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 443 transitions. [2021-08-27 10:59:38,766 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 443 transitions. Word has length 390 [2021-08-27 10:59:38,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:59:38,766 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 443 transitions. [2021-08-27 10:59:38,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 5.957142857142857) internal successors, (417), 70 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) [2021-08-27 10:59:38,766 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 443 transitions. [2021-08-27 10:59:38,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2021-08-27 10:59:38,768 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:59:38,768 INFO L512 BasicCegarLoop]: trace histogram [69, 68, 68, 47, 47, 47, 22, 22, 22, 1, 1] [2021-08-27 10:59:38,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2021-08-27 10:59:38,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:59:38,968 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:59:38,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:59:38,969 INFO L82 PathProgramCache]: Analyzing trace with hash 388409300, now seen corresponding path program 34 times [2021-08-27 10:59:38,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:59:38,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882795391] [2021-08-27 10:59:38,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:59:38,969 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:59:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:59:39,973 INFO L134 CoverageAnalysis]: Checked inductivity of 11940 backedges. 4037 proven. 6580 refuted. 0 times theorem prover too weak. 1323 trivial. 0 not checked. [2021-08-27 10:59:39,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:59:39,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882795391] [2021-08-27 10:59:39,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882795391] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:59:39,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227875022] [2021-08-27 10:59:39,974 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-27 10:59:39,974 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:59:39,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:59:39,975 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:59:39,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2021-08-27 10:59:45,400 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-27 10:59:45,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:59:45,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 49 conjunts are in the unsatisfiable core [2021-08-27 10:59:45,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:59:46,435 INFO L134 CoverageAnalysis]: Checked inductivity of 11940 backedges. 4037 proven. 6580 refuted. 0 times theorem prover too weak. 1323 trivial. 0 not checked. [2021-08-27 10:59:46,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227875022] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:59:46,436 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:59:46,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2021-08-27 10:59:46,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123254667] [2021-08-27 10:59:46,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-08-27 10:59:46,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:59:46,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-08-27 10:59:46,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2021-08-27 10:59:46,437 INFO L87 Difference]: Start difference. First operand 439 states and 443 transitions. Second operand has 50 states, 50 states have (on average 5.84) internal successors, (292), 49 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:59:46,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:59:46,570 INFO L93 Difference]: Finished difference Result 569 states and 573 transitions. [2021-08-27 10:59:46,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-08-27 10:59:46,570 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 5.84) internal successors, (292), 49 states have internal predecessors, (292), 0 states have call successors, (0), 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 414 [2021-08-27 10:59:46,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:59:46,571 INFO L225 Difference]: With dead ends: 569 [2021-08-27 10:59:46,571 INFO L226 Difference]: Without dead ends: 439 [2021-08-27 10:59:46,571 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 890.8ms TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2021-08-27 10:59:46,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-08-27 10:59:46,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2021-08-27 10:59:46,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 438 states have (on average 1.0091324200913243) internal successors, (442), 438 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:59:46,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 442 transitions. [2021-08-27 10:59:46,576 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 442 transitions. Word has length 414 [2021-08-27 10:59:46,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:59:46,576 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 442 transitions. [2021-08-27 10:59:46,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 5.84) internal successors, (292), 49 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:59:46,577 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 442 transitions. [2021-08-27 10:59:46,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2021-08-27 10:59:46,578 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:59:46,578 INFO L512 BasicCegarLoop]: trace histogram [70, 69, 69, 48, 48, 48, 22, 22, 22, 1, 1] [2021-08-27 10:59:46,611 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2021-08-27 10:59:46,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:59:46,779 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:59:46,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:59:46,779 INFO L82 PathProgramCache]: Analyzing trace with hash -476946227, now seen corresponding path program 35 times [2021-08-27 10:59:46,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:59:46,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718474382] [2021-08-27 10:59:46,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:59:46,779 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:59:46,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:59:47,746 INFO L134 CoverageAnalysis]: Checked inductivity of 12309 backedges. 4122 proven. 6864 refuted. 0 times theorem prover too weak. 1323 trivial. 0 not checked. [2021-08-27 10:59:47,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:59:47,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718474382] [2021-08-27 10:59:47,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718474382] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:59:47,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267492927] [2021-08-27 10:59:47,746 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-27 10:59:47,746 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:59:47,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:59:47,747 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:59:47,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2021-08-27 10:59:53,410 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 50 check-sat command(s) [2021-08-27 10:59:53,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:59:53,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 703 conjuncts, 50 conjunts are in the unsatisfiable core [2021-08-27 10:59:53,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:59:54,325 INFO L134 CoverageAnalysis]: Checked inductivity of 12309 backedges. 4122 proven. 6864 refuted. 0 times theorem prover too weak. 1323 trivial. 0 not checked. [2021-08-27 10:59:54,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267492927] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:59:54,325 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:59:54,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2021-08-27 10:59:54,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17391258] [2021-08-27 10:59:54,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-08-27 10:59:54,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:59:54,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-08-27 10:59:54,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2021-08-27 10:59:54,326 INFO L87 Difference]: Start difference. First operand 439 states and 442 transitions. Second operand has 51 states, 51 states have (on average 5.8431372549019605) internal successors, (298), 50 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:59:54,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:59:54,473 INFO L93 Difference]: Finished difference Result 569 states and 572 transitions. [2021-08-27 10:59:54,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-08-27 10:59:54,473 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 5.8431372549019605) internal successors, (298), 50 states have internal predecessors, (298), 0 states have call successors, (0), 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 420 [2021-08-27 10:59:54,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:59:54,474 INFO L225 Difference]: With dead ends: 569 [2021-08-27 10:59:54,474 INFO L226 Difference]: Without dead ends: 439 [2021-08-27 10:59:54,474 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 845.5ms TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2021-08-27 10:59:54,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-08-27 10:59:54,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2021-08-27 10:59:54,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 438 states have (on average 1.0068493150684932) internal successors, (441), 438 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:59:54,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 441 transitions. [2021-08-27 10:59:54,479 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 441 transitions. Word has length 420 [2021-08-27 10:59:54,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:59:54,479 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 441 transitions. [2021-08-27 10:59:54,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 5.8431372549019605) internal successors, (298), 50 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:59:54,479 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 441 transitions. [2021-08-27 10:59:54,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2021-08-27 10:59:54,480 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:59:54,481 INFO L512 BasicCegarLoop]: trace histogram [71, 70, 70, 49, 49, 49, 22, 22, 22, 1, 1] [2021-08-27 10:59:54,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2021-08-27 10:59:54,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:59:54,681 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 10:59:54,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:59:54,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1648605958, now seen corresponding path program 36 times [2021-08-27 10:59:54,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:59:54,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206217830] [2021-08-27 10:59:54,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:59:54,682 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:59:54,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:59:55,731 INFO L134 CoverageAnalysis]: Checked inductivity of 12684 backedges. 4207 proven. 7154 refuted. 0 times theorem prover too weak. 1323 trivial. 0 not checked. [2021-08-27 10:59:55,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:59:55,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206217830] [2021-08-27 10:59:55,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206217830] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:59:55,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800807403] [2021-08-27 10:59:55,732 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-27 10:59:55,732 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:59:55,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:59:55,732 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:59:55,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2021-08-27 11:00:01,623 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 45 check-sat command(s) [2021-08-27 11:00:01,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 11:00:01,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 25 conjunts are in the unsatisfiable core [2021-08-27 11:00:01,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 11:00:03,544 INFO L134 CoverageAnalysis]: Checked inductivity of 12684 backedges. 4605 proven. 1499 refuted. 0 times theorem prover too weak. 6580 trivial. 0 not checked. [2021-08-27 11:00:03,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800807403] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:00:03,545 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 11:00:03,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 25] total 76 [2021-08-27 11:00:03,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990089300] [2021-08-27 11:00:03,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2021-08-27 11:00:03,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:00:03,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-08-27 11:00:03,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2021-08-27 11:00:03,547 INFO L87 Difference]: Start difference. First operand 439 states and 441 transitions. Second operand has 76 states, 76 states have (on average 5.9605263157894735) internal successors, (453), 76 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:00:03,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:00:03,868 INFO L93 Difference]: Finished difference Result 582 states and 586 transitions. [2021-08-27 11:00:03,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-08-27 11:00:03,869 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 5.9605263157894735) internal successors, (453), 76 states have internal predecessors, (453), 0 states have call successors, (0), 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 426 [2021-08-27 11:00:03,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:00:03,869 INFO L225 Difference]: With dead ends: 582 [2021-08-27 11:00:03,870 INFO L226 Difference]: Without dead ends: 452 [2021-08-27 11:00:03,870 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1956.2ms TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2021-08-27 11:00:03,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-08-27 11:00:03,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 451. [2021-08-27 11:00:03,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 450 states have (on average 1.0022222222222221) internal successors, (451), 450 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:00:03,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 451 transitions. [2021-08-27 11:00:03,875 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 451 transitions. Word has length 426 [2021-08-27 11:00:03,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:00:03,876 INFO L470 AbstractCegarLoop]: Abstraction has 451 states and 451 transitions. [2021-08-27 11:00:03,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 5.9605263157894735) internal successors, (453), 76 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:00:03,876 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 451 transitions. [2021-08-27 11:00:03,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2021-08-27 11:00:03,877 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:00:03,878 INFO L512 BasicCegarLoop]: trace histogram [75, 74, 74, 51, 51, 51, 24, 24, 24, 1, 1] [2021-08-27 11:00:03,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2021-08-27 11:00:04,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable93 [2021-08-27 11:00:04,081 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 11:00:04,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:00:04,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1799113250, now seen corresponding path program 37 times [2021-08-27 11:00:04,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:00:04,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944678504] [2021-08-27 11:00:04,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:00:04,081 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:00:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:00:06,303 INFO L134 CoverageAnalysis]: Checked inductivity of 14128 backedges. 0 proven. 14128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:00:06,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:00:06,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944678504] [2021-08-27 11:00:06,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944678504] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:00:06,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008286965] [2021-08-27 11:00:06,303 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-27 11:00:06,303 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:00:06,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:00:06,305 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 11:00:06,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2021-08-27 11:00:12,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:00:12,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 753 conjuncts, 76 conjunts are in the unsatisfiable core [2021-08-27 11:00:12,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 11:00:13,391 INFO L134 CoverageAnalysis]: Checked inductivity of 14128 backedges. 0 proven. 14128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:00:13,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008286965] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:00:13,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 11:00:13,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2021-08-27 11:00:13,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781243248] [2021-08-27 11:00:13,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2021-08-27 11:00:13,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:00:13,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-08-27 11:00:13,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2021-08-27 11:00:13,392 INFO L87 Difference]: Start difference. First operand 451 states and 451 transitions. Second operand has 77 states, 76 states have (on average 5.921052631578948) internal successors, (450), 76 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:00:13,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:00:13,700 INFO L93 Difference]: Finished difference Result 459 states and 459 transitions. [2021-08-27 11:00:13,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-08-27 11:00:13,701 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 76 states have (on average 5.921052631578948) internal successors, (450), 76 states have internal predecessors, (450), 0 states have call successors, (0), 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 450 [2021-08-27 11:00:13,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:00:13,701 INFO L225 Difference]: With dead ends: 459 [2021-08-27 11:00:13,701 INFO L226 Difference]: Without dead ends: 458 [2021-08-27 11:00:13,701 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2042.0ms TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2021-08-27 11:00:13,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2021-08-27 11:00:13,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 457. [2021-08-27 11:00:13,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 456 states have (on average 1.0021929824561404) internal successors, (457), 456 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:00:13,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 457 transitions. [2021-08-27 11:00:13,707 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 457 transitions. Word has length 450 [2021-08-27 11:00:13,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:00:13,707 INFO L470 AbstractCegarLoop]: Abstraction has 457 states and 457 transitions. [2021-08-27 11:00:13,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 76 states have (on average 5.921052631578948) internal successors, (450), 76 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:00:13,708 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 457 transitions. [2021-08-27 11:00:13,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2021-08-27 11:00:13,709 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:00:13,709 INFO L512 BasicCegarLoop]: trace histogram [76, 75, 75, 51, 51, 51, 25, 25, 25, 1, 1] [2021-08-27 11:00:13,742 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2021-08-27 11:00:13,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:00:13,913 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 11:00:13,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:00:13,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1017961519, now seen corresponding path program 38 times [2021-08-27 11:00:13,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:00:13,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130102700] [2021-08-27 11:00:13,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:00:13,913 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:00:13,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:00:16,167 INFO L134 CoverageAnalysis]: Checked inductivity of 14475 backedges. 0 proven. 14475 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:00:16,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:00:16,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130102700] [2021-08-27 11:00:16,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130102700] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:00:16,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703697033] [2021-08-27 11:00:16,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 11:00:16,168 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:00:16,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:00:16,169 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 11:00:16,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2021-08-27 11:00:22,533 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 11:00:22,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 11:00:22,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 77 conjunts are in the unsatisfiable core [2021-08-27 11:00:22,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 11:00:23,715 INFO L134 CoverageAnalysis]: Checked inductivity of 14475 backedges. 0 proven. 14475 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:00:23,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703697033] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:00:23,716 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 11:00:23,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2021-08-27 11:00:23,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526052592] [2021-08-27 11:00:23,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2021-08-27 11:00:23,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:00:23,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-08-27 11:00:23,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2021-08-27 11:00:23,717 INFO L87 Difference]: Start difference. First operand 457 states and 457 transitions. Second operand has 78 states, 77 states have (on average 5.922077922077922) internal successors, (456), 77 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:00:24,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:00:24,030 INFO L93 Difference]: Finished difference Result 465 states and 465 transitions. [2021-08-27 11:00:24,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-08-27 11:00:24,030 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 77 states have (on average 5.922077922077922) internal successors, (456), 77 states have internal predecessors, (456), 0 states have call successors, (0), 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 456 [2021-08-27 11:00:24,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:00:24,031 INFO L225 Difference]: With dead ends: 465 [2021-08-27 11:00:24,031 INFO L226 Difference]: Without dead ends: 464 [2021-08-27 11:00:24,031 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2076.2ms TimeCoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2021-08-27 11:00:24,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2021-08-27 11:00:24,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 463. [2021-08-27 11:00:24,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 462 states have (on average 1.0021645021645023) internal successors, (463), 462 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:00:24,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 463 transitions. [2021-08-27 11:00:24,037 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 463 transitions. Word has length 456 [2021-08-27 11:00:24,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:00:24,038 INFO L470 AbstractCegarLoop]: Abstraction has 463 states and 463 transitions. [2021-08-27 11:00:24,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 77 states have (on average 5.922077922077922) internal successors, (456), 77 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:00:24,038 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 463 transitions. [2021-08-27 11:00:24,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2021-08-27 11:00:24,039 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:00:24,039 INFO L512 BasicCegarLoop]: trace histogram [77, 76, 76, 51, 51, 51, 26, 26, 26, 1, 1] [2021-08-27 11:00:24,074 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2021-08-27 11:00:24,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:00:24,240 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 11:00:24,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:00:24,240 INFO L82 PathProgramCache]: Analyzing trace with hash -932769916, now seen corresponding path program 39 times [2021-08-27 11:00:24,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:00:24,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169978183] [2021-08-27 11:00:24,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:00:24,241 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:00:24,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:00:26,583 INFO L134 CoverageAnalysis]: Checked inductivity of 14828 backedges. 0 proven. 14828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:00:26,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:00:26,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169978183] [2021-08-27 11:00:26,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169978183] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:00:26,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539755969] [2021-08-27 11:00:26,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 11:00:26,583 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:00:26,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:00:26,584 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 11:00:26,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2021-08-27 11:00:32,978 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2021-08-27 11:00:32,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 11:00:32,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 28 conjunts are in the unsatisfiable core [2021-08-27 11:00:32,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 11:00:33,944 INFO L134 CoverageAnalysis]: Checked inductivity of 14828 backedges. 5402 proven. 1976 refuted. 0 times theorem prover too weak. 7450 trivial. 0 not checked. [2021-08-27 11:00:33,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539755969] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:00:33,944 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 11:00:33,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 28] total 78 [2021-08-27 11:00:33,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107418115] [2021-08-27 11:00:33,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2021-08-27 11:00:33,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:00:33,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-08-27 11:00:33,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2021-08-27 11:00:33,946 INFO L87 Difference]: Start difference. First operand 463 states and 463 transitions. Second operand has 79 states, 78 states have (on average 6.0256410256410255) internal successors, (470), 79 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:00:34,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:00:34,283 INFO L93 Difference]: Finished difference Result 471 states and 471 transitions. [2021-08-27 11:00:34,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-08-27 11:00:34,283 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 78 states have (on average 6.0256410256410255) internal successors, (470), 79 states have internal predecessors, (470), 0 states have call successors, (0), 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 462 [2021-08-27 11:00:34,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:00:34,284 INFO L225 Difference]: With dead ends: 471 [2021-08-27 11:00:34,284 INFO L226 Difference]: Without dead ends: 470 [2021-08-27 11:00:34,285 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 461 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2107.7ms TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2021-08-27 11:00:34,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2021-08-27 11:00:34,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 469. [2021-08-27 11:00:34,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 468 states have (on average 1.0021367521367521) internal successors, (469), 468 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:00:34,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 469 transitions. [2021-08-27 11:00:34,291 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 469 transitions. Word has length 462 [2021-08-27 11:00:34,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:00:34,291 INFO L470 AbstractCegarLoop]: Abstraction has 469 states and 469 transitions. [2021-08-27 11:00:34,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 78 states have (on average 6.0256410256410255) internal successors, (470), 79 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:00:34,292 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 469 transitions. [2021-08-27 11:00:34,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2021-08-27 11:00:34,293 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:00:34,294 INFO L512 BasicCegarLoop]: trace histogram [78, 77, 77, 51, 51, 51, 27, 27, 27, 1, 1] [2021-08-27 11:00:34,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2021-08-27 11:00:34,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:00:34,509 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 11:00:34,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:00:34,509 INFO L82 PathProgramCache]: Analyzing trace with hash -929421065, now seen corresponding path program 40 times [2021-08-27 11:00:34,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:00:34,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808969756] [2021-08-27 11:00:34,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:00:34,509 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:00:34,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:00:36,856 INFO L134 CoverageAnalysis]: Checked inductivity of 15187 backedges. 0 proven. 15187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:00:36,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:00:36,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808969756] [2021-08-27 11:00:36,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808969756] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:00:36,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055010991] [2021-08-27 11:00:36,856 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-27 11:00:36,856 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:00:36,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:00:36,857 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 11:00:36,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2021-08-27 11:00:43,253 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-27 11:00:43,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 11:00:43,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 79 conjunts are in the unsatisfiable core [2021-08-27 11:00:43,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 11:00:44,403 INFO L134 CoverageAnalysis]: Checked inductivity of 15187 backedges. 0 proven. 15187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:00:44,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055010991] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:00:44,403 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 11:00:44,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2021-08-27 11:00:44,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922740038] [2021-08-27 11:00:44,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2021-08-27 11:00:44,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:00:44,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-08-27 11:00:44,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2021-08-27 11:00:44,405 INFO L87 Difference]: Start difference. First operand 469 states and 469 transitions. Second operand has 80 states, 79 states have (on average 5.924050632911392) internal successors, (468), 79 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:00:44,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:00:44,735 INFO L93 Difference]: Finished difference Result 477 states and 477 transitions. [2021-08-27 11:00:44,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-08-27 11:00:44,735 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 79 states have (on average 5.924050632911392) internal successors, (468), 79 states have internal predecessors, (468), 0 states have call successors, (0), 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 468 [2021-08-27 11:00:44,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:00:44,736 INFO L225 Difference]: With dead ends: 477 [2021-08-27 11:00:44,736 INFO L226 Difference]: Without dead ends: 476 [2021-08-27 11:00:44,736 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 467 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2124.8ms TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2021-08-27 11:00:44,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-08-27 11:00:44,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 475. [2021-08-27 11:00:44,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 474 states have (on average 1.0021097046413503) internal successors, (475), 474 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:00:44,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 475 transitions. [2021-08-27 11:00:44,742 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 475 transitions. Word has length 468 [2021-08-27 11:00:44,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:00:44,743 INFO L470 AbstractCegarLoop]: Abstraction has 475 states and 475 transitions. [2021-08-27 11:00:44,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 79 states have (on average 5.924050632911392) internal successors, (468), 79 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:00:44,743 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 475 transitions. [2021-08-27 11:00:44,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2021-08-27 11:00:44,744 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:00:44,745 INFO L512 BasicCegarLoop]: trace histogram [79, 78, 78, 51, 51, 51, 28, 28, 28, 1, 1] [2021-08-27 11:00:44,779 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2021-08-27 11:00:44,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:00:44,945 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 11:00:44,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:00:44,945 INFO L82 PathProgramCache]: Analyzing trace with hash -708632534, now seen corresponding path program 41 times [2021-08-27 11:00:44,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:00:44,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488578052] [2021-08-27 11:00:44,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:00:44,948 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:00:45,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:00:47,455 INFO L134 CoverageAnalysis]: Checked inductivity of 15552 backedges. 0 proven. 15552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:00:47,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:00:47,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488578052] [2021-08-27 11:00:47,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488578052] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:00:47,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201440168] [2021-08-27 11:00:47,456 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-27 11:00:47,456 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:00:47,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:00:47,456 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 11:00:47,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2021-08-27 11:00:54,107 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 53 check-sat command(s) [2021-08-27 11:00:54,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 11:00:54,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 72 conjunts are in the unsatisfiable core [2021-08-27 11:00:54,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 11:00:58,203 INFO L134 CoverageAnalysis]: Checked inductivity of 15552 backedges. 3076 proven. 12292 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-08-27 11:00:58,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201440168] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:00:58,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 11:00:58,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 72] total 122 [2021-08-27 11:00:58,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008722598] [2021-08-27 11:00:58,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2021-08-27 11:00:58,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:00:58,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2021-08-27 11:00:58,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2021-08-27 11:00:58,206 INFO L87 Difference]: Start difference. First operand 475 states and 475 transitions. Second operand has 123 states, 122 states have (on average 6.713114754098361) internal successors, (819), 123 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:00:58,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:00:58,818 INFO L93 Difference]: Finished difference Result 735 states and 777 transitions. [2021-08-27 11:00:58,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2021-08-27 11:00:58,819 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 122 states have (on average 6.713114754098361) internal successors, (819), 123 states have internal predecessors, (819), 0 states have call successors, (0), 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 474 [2021-08-27 11:00:58,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:00:58,820 INFO L225 Difference]: With dead ends: 735 [2021-08-27 11:00:58,820 INFO L226 Difference]: Without dead ends: 734 [2021-08-27 11:00:58,820 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5203.9ms TimeCoverageRelationStatistics Valid=7503, Invalid=7503, Unknown=0, NotChecked=0, Total=15006 [2021-08-27 11:00:58,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2021-08-27 11:00:58,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 733. [2021-08-27 11:00:58,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 732 states have (on average 1.0013661202185793) internal successors, (733), 732 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:00:58,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 733 transitions. [2021-08-27 11:00:58,833 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 733 transitions. Word has length 474 [2021-08-27 11:00:58,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:00:58,834 INFO L470 AbstractCegarLoop]: Abstraction has 733 states and 733 transitions. [2021-08-27 11:00:58,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 122 states have (on average 6.713114754098361) internal successors, (819), 123 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:00:58,834 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 733 transitions. [2021-08-27 11:00:58,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2021-08-27 11:00:58,837 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:00:58,838 INFO L512 BasicCegarLoop]: trace histogram [122, 121, 121, 71, 71, 71, 51, 51, 51, 1, 1] [2021-08-27 11:00:58,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2021-08-27 11:00:59,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2021-08-27 11:00:59,039 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-08-27 11:00:59,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:00:59,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1229081285, now seen corresponding path program 42 times [2021-08-27 11:00:59,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:00:59,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748371877] [2021-08-27 11:00:59,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:00:59,039 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:00:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:01:04,644 INFO L134 CoverageAnalysis]: Checked inductivity of 36923 backedges. 0 proven. 36923 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 11:01:04,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:01:04,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748371877] [2021-08-27 11:01:04,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748371877] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:01:04,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128393970] [2021-08-27 11:01:04,645 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-27 11:01:04,645 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:01:04,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:01:04,653 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 11:01:04,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2021-08-27 11:01:11,597 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 72 check-sat command(s) [2021-08-27 11:01:11,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 11:01:11,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 1223 conjuncts, 123 conjunts are in the unsatisfiable core [2021-08-27 11:01:11,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 11:01:17,687 INFO L134 CoverageAnalysis]: Checked inductivity of 36923 backedges. 23969 proven. 12752 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2021-08-27 11:01:17,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128393970] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:01:17,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 11:01:17,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [122, 72] total 194 [2021-08-27 11:01:17,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266098940] [2021-08-27 11:01:17,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 195 states [2021-08-27 11:01:17,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:01:17,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 195 interpolants. [2021-08-27 11:01:17,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10253, Invalid=27577, Unknown=0, NotChecked=0, Total=37830 [2021-08-27 11:01:17,692 INFO L87 Difference]: Start difference. First operand 733 states and 733 transitions. Second operand has 195 states, 195 states have (on average 6.733333333333333) internal successors, (1313), 194 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:01:30,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:01:30,401 INFO L93 Difference]: Finished difference Result 733 states and 733 transitions. [2021-08-27 11:01:30,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2021-08-27 11:01:30,401 INFO L78 Accepts]: Start accepts. Automaton has has 195 states, 195 states have (on average 6.733333333333333) internal successors, (1313), 194 states have internal predecessors, (1313), 0 states have call successors, (0), 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 732 [2021-08-27 11:01:30,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:01:30,402 INFO L225 Difference]: With dead ends: 733 [2021-08-27 11:01:30,402 INFO L226 Difference]: Without dead ends: 0 [2021-08-27 11:01:30,409 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1060 GetRequests, 660 SyntacticMatches, 0 SemanticMatches, 400 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35724 ImplicationChecksByTransitivity, 20146.8ms TimeCoverageRelationStatistics Valid=41435, Invalid=119767, Unknown=0, NotChecked=0, Total=161202 [2021-08-27 11:01:30,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-27 11:01:30,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-27 11:01:30,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:01:30,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-27 11:01:30,409 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 732 [2021-08-27 11:01:30,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:01:30,409 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 11:01:30,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 195 states, 195 states have (on average 6.733333333333333) internal successors, (1313), 194 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:01:30,410 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-27 11:01:30,410 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-27 11:01:30,412 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 11:01:30,412 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 11:01:30,413 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 11:01:30,413 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 11:01:30,413 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 11:01:30,413 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 11:01:30,453 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2021-08-27 11:01:30,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2021-08-27 11:01:30,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-27 11:01:30,638 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:01:31,117 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:01:33,843 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-08-27 11:01:33,844 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-27 11:01:33,844 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-08-27 11:01:33,844 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2021-08-27 11:01:33,844 INFO L857 garLoopResultBuilder]: For program point L19(lines 19 23) no Hoare annotation was computed. [2021-08-27 11:01:33,844 INFO L857 garLoopResultBuilder]: For program point L19-2(lines 19 23) no Hoare annotation was computed. [2021-08-27 11:01:33,844 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-08-27 11:01:33,844 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-08-27 11:01:33,844 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-27 11:01:33,844 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2021-08-27 11:01:33,845 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-27 11:01:33,845 INFO L860 garLoopResultBuilder]: At program point L26(lines 14 27) the Hoare annotation is: true [2021-08-27 11:01:33,845 INFO L857 garLoopResultBuilder]: For program point L24(line 24) no Hoare annotation was computed. [2021-08-27 11:01:33,845 INFO L857 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2021-08-27 11:01:33,845 INFO L857 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2021-08-27 11:01:33,845 INFO L857 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2021-08-27 11:01:33,845 INFO L857 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2021-08-27 11:01:33,846 INFO L853 garLoopResultBuilder]: At program point L18-2(lines 18 25) the Hoare annotation is: (let ((.cse7 (<= ULTIMATE.start_main_~y~0 21)) (.cse4 (<= ULTIMATE.start_main_~y~0 32)) (.cse28 (<= ULTIMATE.start_main_~y~0 15)) (.cse36 (<= ULTIMATE.start_main_~y~0 8)) (.cse34 (<= ULTIMATE.start_main_~y~0 42)) (.cse37 (<= ULTIMATE.start_main_~y~0 40)) (.cse21 (<= ULTIMATE.start_main_~y~0 46)) (.cse12 (<= ULTIMATE.start_main_~y~0 7)) (.cse31 (<= ULTIMATE.start_main_~y~0 43)) (.cse27 (<= ULTIMATE.start_main_~y~0 20)) (.cse10 (<= ULTIMATE.start_main_~y~0 31)) (.cse35 (<= ULTIMATE.start_main_~y~0 36)) (.cse18 (<= ULTIMATE.start_main_~y~0 28)) (.cse40 (<= ULTIMATE.start_main_~y~0 18)) (.cse8 (<= ULTIMATE.start_main_~y~0 45)) (.cse17 (<= ULTIMATE.start_main_~y~0 10)) (.cse30 (<= ULTIMATE.start_main_~y~0 22)) (.cse43 (<= ULTIMATE.start_main_~y~0 3)) (.cse44 (<= ULTIMATE.start_main_~y~0 23)) (.cse6 (<= ULTIMATE.start_main_~y~0 27)) (.cse19 (<= ULTIMATE.start_main_~y~0 0)) (.cse45 (<= ULTIMATE.start_main_~y~0 26)) (.cse0 (<= ULTIMATE.start_main_~y~0 9)) (.cse15 (<= ULTIMATE.start_main_~y~0 24)) (.cse16 (<= ULTIMATE.start_main_~y~0 17)) (.cse9 (<= ULTIMATE.start_main_~y~0 30)) (.cse20 (<= ULTIMATE.start_main_~y~0 13)) (.cse14 (<= ULTIMATE.start_main_~y~0 37)) (.cse29 (<= ULTIMATE.start_main_~y~0 33)) (.cse39 (<= ULTIMATE.start_main_~y~0 38)) (.cse42 (<= ULTIMATE.start_main_~y~0 44)) (.cse41 (<= ULTIMATE.start_main_~y~0 14)) (.cse33 (<= ULTIMATE.start_main_~y~0 4)) (.cse11 (<= ULTIMATE.start_main_~y~0 11)) (.cse46 (<= ULTIMATE.start_main_~y~0 48)) (.cse32 (<= ULTIMATE.start_main_~y~0 39)) (.cse38 (<= ULTIMATE.start_main_~y~0 19)) (.cse13 (<= ULTIMATE.start_main_~y~0 6)) (.cse26 (<= ULTIMATE.start_main_~y~0 2)) (.cse47 (<= ULTIMATE.start_main_~y~0 1)) (.cse22 (<= ULTIMATE.start_main_~y~0 25)) (.cse48 (<= ULTIMATE.start_main_~y~0 12)) (.cse23 (<= ULTIMATE.start_main_~y~0 41)) (.cse50 (<= ULTIMATE.start_main_~y~0 50)) (.cse51 (<= ULTIMATE.start_main_~y~0 29)) (.cse49 (<= ULTIMATE.start_main_~y~0 5)) (.cse2 (<= ULTIMATE.start_main_~y~0 49)) (.cse5 (<= ULTIMATE.start_main_~y~0 34)) (.cse25 (<= ULTIMATE.start_main_~y~0 35)) (.cse3 (<= 51 ULTIMATE.start_main_~x~0)) (.cse52 (<= ULTIMATE.start_main_~y~0 16)) (.cse24 (<= ULTIMATE.start_main_~y~0 47)) (.cse1 (<= ULTIMATE.start_main_~x~0 51))) (or (and .cse0 .cse1 (<= 9 ULTIMATE.start_main_~x~0)) (and .cse2 (<= ULTIMATE.start_main_~x~0 53) .cse3) (and (<= 32 ULTIMATE.start_main_~x~0) .cse1 .cse4) (and .cse5 .cse6 .cse3 (<= ULTIMATE.start_main_~x~0 75)) (and .cse5 .cse7 (<= ULTIMATE.start_main_~x~0 81) .cse3) (and .cse8 (<= ULTIMATE.start_main_~x~0 57) .cse3) (and (<= 30 ULTIMATE.start_main_~x~0) .cse9 .cse1) (and (<= 21 ULTIMATE.start_main_~x~0) .cse7 .cse1) (and (<= 31 ULTIMATE.start_main_~x~0) .cse10 .cse1) (and (<= ULTIMATE.start_main_~x~0 91) .cse5 .cse3 .cse11) (and .cse12 .cse1 (<= 7 ULTIMATE.start_main_~x~0)) (and .cse13 .cse5 (<= ULTIMATE.start_main_~x~0 96) .cse3) (and .cse14 (<= 37 ULTIMATE.start_main_~x~0) .cse1) (and .cse15 .cse5 (<= ULTIMATE.start_main_~x~0 78) .cse3) (and .cse5 (<= ULTIMATE.start_main_~x~0 70) .cse3 .cse4) (and .cse16 (<= ULTIMATE.start_main_~x~0 85) .cse5 .cse3) (and .cse5 (<= ULTIMATE.start_main_~x~0 92) .cse3 .cse17) (and .cse5 (<= ULTIMATE.start_main_~x~0 74) .cse3 .cse18) (and .cse5 (<= (+ ULTIMATE.start_main_~y~0 1) 0) (<= ULTIMATE.start_main_~x~0 103) .cse3) (and .cse5 .cse19 .cse3 (<= ULTIMATE.start_main_~x~0 102)) (and .cse20 .cse5 .cse3 (<= ULTIMATE.start_main_~x~0 89)) (and .cse21 (<= 46 ULTIMATE.start_main_~x~0) .cse1) (and (<= 25 ULTIMATE.start_main_~x~0) .cse22 (<= ULTIMATE.start_main_~x~0 25)) (and (<= 41 ULTIMATE.start_main_~x~0) .cse23 .cse1) (and (<= ULTIMATE.start_main_~x~0 55) .cse24 .cse3) (and .cse25 (<= 35 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 35)) (and .cse5 .cse26 .cse3 (<= ULTIMATE.start_main_~x~0 100)) (and (<= 20 ULTIMATE.start_main_~x~0) .cse27 .cse1) (and .cse28 .cse5 (<= ULTIMATE.start_main_~x~0 87) .cse3) (and .cse5 (<= 34 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 34)) (and .cse5 .cse29 (<= ULTIMATE.start_main_~x~0 69) .cse3) (and (<= ULTIMATE.start_main_~x~0 80) .cse5 .cse30 .cse3) (and .cse31 .cse1 (<= 43 ULTIMATE.start_main_~x~0)) (and .cse28 (<= 15 ULTIMATE.start_main_~x~0) .cse1) (and (<= ULTIMATE.start_main_~x~0 63) .cse32 .cse3) (and (<= 4 ULTIMATE.start_main_~x~0) .cse33 .cse1) (and .cse34 .cse1 (<= 42 ULTIMATE.start_main_~x~0)) (and .cse35 .cse1 (<= 36 ULTIMATE.start_main_~x~0)) (and .cse5 (<= ULTIMATE.start_main_~x~0 94) .cse3 .cse36) (and (<= 8 ULTIMATE.start_main_~x~0) .cse1 .cse36) (and .cse37 (<= ULTIMATE.start_main_~x~0 62) .cse3) (and .cse34 (<= ULTIMATE.start_main_~x~0 60) .cse3) (and .cse37 (<= ULTIMATE.start_main_~x~0 40) (<= 40 ULTIMATE.start_main_~x~0)) (and .cse21 (<= ULTIMATE.start_main_~x~0 56) .cse3) (and .cse5 (<= ULTIMATE.start_main_~x~0 83) .cse3 .cse38) (and .cse5 .cse3 (<= ULTIMATE.start_main_~x~0 68)) (and (<= ULTIMATE.start_main_~x~0 64) .cse39 .cse3) (and (<= 18 ULTIMATE.start_main_~x~0) .cse40 .cse1) (and .cse41 .cse1 (<= 14 ULTIMATE.start_main_~x~0)) (and .cse5 .cse12 .cse3 (<= ULTIMATE.start_main_~x~0 95)) (and .cse31 (<= ULTIMATE.start_main_~x~0 59) .cse3) (and (<= ULTIMATE.start_main_~x~0 82) .cse5 .cse27 .cse3) (and .cse5 .cse10 (<= ULTIMATE.start_main_~x~0 71) .cse3) (and (<= ULTIMATE.start_main_~x~0 66) .cse35 .cse3) (and .cse42 (<= 44 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 44)) (and (<= ULTIMATE.start_main_~x~0 99) .cse5 .cse43 .cse3) (and (<= 28 ULTIMATE.start_main_~x~0) .cse1 .cse18) (and .cse5 .cse44 .cse3 (<= ULTIMATE.start_main_~x~0 79)) (and .cse5 .cse40 .cse3 (<= ULTIMATE.start_main_~x~0 84)) (and .cse8 (<= 45 ULTIMATE.start_main_~x~0) .cse1) (and (<= 10 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 10) .cse17) (and .cse30 (<= 22 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 22)) (and .cse5 .cse3 (<= ULTIMATE.start_main_~x~0 76) .cse45) (and .cse3 (<= ULTIMATE.start_main_~x~0 54) .cse46) (and (<= ULTIMATE.start_main_~x~0 3) .cse43 (<= 3 ULTIMATE.start_main_~x~0)) (and (<= 23 ULTIMATE.start_main_~x~0) .cse44 .cse1) (and (<= ULTIMATE.start_main_~x~0 1) (<= 1 ULTIMATE.start_main_~x~0) .cse47) (and .cse48 .cse1 (<= 12 ULTIMATE.start_main_~x~0)) (and .cse6 (<= 27 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 27)) (and (<= ULTIMATE.start_main_~x~0 0) .cse19 (<= 0 ULTIMATE.start_main_~y~0) (<= 0 ULTIMATE.start_main_~x~0)) (and (<= 26 ULTIMATE.start_main_~x~0) .cse1 .cse45) (and .cse1 .cse3 (<= ULTIMATE.start_main_~y~0 51)) (and .cse5 (<= ULTIMATE.start_main_~x~0 93) .cse0 .cse3) (and .cse15 (<= 24 ULTIMATE.start_main_~x~0) .cse1) (and .cse16 (<= 17 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 17)) (and .cse5 .cse9 (<= ULTIMATE.start_main_~x~0 72) .cse3) (and .cse20 (<= 13 ULTIMATE.start_main_~x~0) .cse1) (and .cse14 (<= ULTIMATE.start_main_~x~0 65) .cse3) (and .cse29 (<= 33 ULTIMATE.start_main_~x~0) .cse1) (and (<= 38 ULTIMATE.start_main_~x~0) .cse1 .cse39) (and .cse42 .cse3 (<= ULTIMATE.start_main_~x~0 58)) (and .cse5 .cse41 (<= ULTIMATE.start_main_~x~0 88) .cse3) (and .cse5 .cse33 (<= ULTIMATE.start_main_~x~0 98) .cse3) (and (<= 11 ULTIMATE.start_main_~x~0) .cse1 .cse11) (and (<= 48 ULTIMATE.start_main_~x~0) .cse1 .cse46) (and (<= 39 ULTIMATE.start_main_~x~0) .cse32 .cse1) (and .cse5 .cse49 (<= ULTIMATE.start_main_~x~0 97) .cse3) (and (<= 19 ULTIMATE.start_main_~x~0) .cse1 .cse38) (and .cse13 (<= 6 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 6)) (and (<= 2 ULTIMATE.start_main_~x~0) .cse26 (<= ULTIMATE.start_main_~x~0 2)) (and .cse5 (<= ULTIMATE.start_main_~x~0 101) .cse3 .cse47) (and .cse5 .cse22 .cse3 (<= ULTIMATE.start_main_~x~0 77)) (and .cse5 .cse48 (<= ULTIMATE.start_main_~x~0 90) .cse3) (and .cse23 (<= ULTIMATE.start_main_~x~0 61) .cse3) (and (<= ULTIMATE.start_main_~x~0 52) .cse50 .cse3) (and .cse1 .cse50 (<= 50 ULTIMATE.start_main_~x~0)) (and .cse51 (<= 29 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 29)) (and .cse5 (<= ULTIMATE.start_main_~x~0 73) .cse51 .cse3) (and (<= 5 ULTIMATE.start_main_~x~0) .cse49 .cse1) (and .cse2 (<= 49 ULTIMATE.start_main_~x~0) .cse1) (and .cse5 .cse52 .cse3 (<= ULTIMATE.start_main_~x~0 86)) (and .cse25 .cse3 (<= ULTIMATE.start_main_~x~0 67)) (and .cse52 (<= 16 ULTIMATE.start_main_~x~0) .cse1) (and (<= 47 ULTIMATE.start_main_~x~0) .cse24 .cse1))) [2021-08-27 11:01:33,846 INFO L857 garLoopResultBuilder]: For program point L18-3(lines 18 25) no Hoare annotation was computed. [2021-08-27 11:01:33,849 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 11:01:33,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 11:01:33 BoogieIcfgContainer [2021-08-27 11:01:33,873 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 11:01:33,873 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 11:01:33,873 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 11:01:33,874 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 11:01:33,874 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:55:03" (3/4) ... [2021-08-27 11:01:33,876 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-27 11:01:33,881 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-08-27 11:01:33,882 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-08-27 11:01:33,912 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 11:01:33,912 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 11:01:33,914 INFO L168 Benchmark]: Toolchain (without parser) took 390746.24 ms. Allocated memory was 56.6 MB in the beginning and 1.9 GB in the end (delta: 1.9 GB). Free memory was 35.9 MB in the beginning and 320.7 MB in the end (delta: -284.9 MB). Peak memory consumption was 1.6 GB. Max. memory is 16.1 GB. [2021-08-27 11:01:33,914 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 56.6 MB. Free memory was 39.2 MB in the beginning and 39.2 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 11:01:33,914 INFO L168 Benchmark]: CACSL2BoogieTranslator took 154.22 ms. Allocated memory is still 56.6 MB. Free memory was 35.6 MB in the beginning and 27.2 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 11:01:33,915 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.52 ms. Allocated memory is still 56.6 MB. Free memory was 27.2 MB in the beginning and 41.5 MB in the end (delta: -14.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 11:01:33,915 INFO L168 Benchmark]: Boogie Preprocessor took 15.36 ms. Allocated memory is still 56.6 MB. Free memory was 41.3 MB in the beginning and 40.5 MB in the end (delta: 881.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 11:01:33,915 INFO L168 Benchmark]: RCFGBuilder took 217.35 ms. Allocated memory is still 56.6 MB. Free memory was 40.5 MB in the beginning and 31.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 11:01:33,916 INFO L168 Benchmark]: TraceAbstraction took 390267.03 ms. Allocated memory was 56.6 MB in the beginning and 1.9 GB in the end (delta: 1.9 GB). Free memory was 30.4 MB in the beginning and 323.9 MB in the end (delta: -293.5 MB). Peak memory consumption was 1.7 GB. Max. memory is 16.1 GB. [2021-08-27 11:01:33,916 INFO L168 Benchmark]: Witness Printer took 39.07 ms. Allocated memory is still 1.9 GB. Free memory was 323.9 MB in the beginning and 320.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 11:01:33,917 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 56.6 MB. Free memory was 39.2 MB in the beginning and 39.2 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 154.22 ms. Allocated memory is still 56.6 MB. Free memory was 35.6 MB in the beginning and 27.2 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.52 ms. Allocated memory is still 56.6 MB. Free memory was 27.2 MB in the beginning and 41.5 MB in the end (delta: -14.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 15.36 ms. Allocated memory is still 56.6 MB. Free memory was 41.3 MB in the beginning and 40.5 MB in the end (delta: 881.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 217.35 ms. Allocated memory is still 56.6 MB. Free memory was 40.5 MB in the beginning and 31.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 390267.03 ms. Allocated memory was 56.6 MB in the beginning and 1.9 GB in the end (delta: 1.9 GB). Free memory was 30.4 MB in the beginning and 323.9 MB in the end (delta: -293.5 MB). Peak memory consumption was 1.7 GB. Max. memory is 16.1 GB. * Witness Printer took 39.07 ms. Allocated memory is still 1.9 GB. Free memory was 323.9 MB in the beginning and 320.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 390209.0ms, OverallIterations: 100, TraceHistogramMax: 122, EmptinessCheckTime: 110.6ms, AutomataDifference: 30255.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 3214.1ms, InitialAbstractionConstructionTime: 6.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2623 SDtfs, 18154 SDslu, 15422 SDs, 0 SdLazy, 22487 SolverSat, 3085 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10594.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22995 GetRequests, 19491 SyntacticMatches, 0 SemanticMatches, 3504 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38491 ImplicationChecksByTransitivity, 73024.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5250occurred in iteration=84, InterpolantAutomatonStates: 3454, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 2157.4ms AutomataMinimizationTime, 100 MinimizatonAttempts, 86750 StatesRemovedByMinimization, 91 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 108 NumberOfFragments, 1152 HoareAnnotationTreeSize, 2 FomulaSimplifications, 3200 FormulaSimplificationTreeSizeReduction, 483.3ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 16785 FormulaSimplificationTreeSizeReductionInter, 2717.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 581.0ms SsaConstructionTime, 4402.2ms SatisfiabilityAnalysisTime, 116138.6ms InterpolantComputationTime, 39784 NumberOfCodeBlocks, 38866 NumberOfCodeBlocksAsserted, 1451 NumberOfCheckSat, 39589 ConstructedInterpolants, 0 QuantifiedInterpolants, 106837 SizeOfPredicates, 0 NumberOfNonLiveVariables, 31843 ConjunctsInSsa, 2818 ConjunctsInUnsatCore, 195 InterpolantComputations, 6 PerfectInterpolantSequences, 213114/851854 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((y <= 9 && x <= 51) && 9 <= x) || ((y <= 49 && x <= 53) && 51 <= x)) || ((32 <= x && x <= 51) && y <= 32)) || (((y <= 34 && y <= 27) && 51 <= x) && x <= 75)) || (((y <= 34 && y <= 21) && x <= 81) && 51 <= x)) || ((y <= 45 && x <= 57) && 51 <= x)) || ((30 <= x && y <= 30) && x <= 51)) || ((21 <= x && y <= 21) && x <= 51)) || ((31 <= x && y <= 31) && x <= 51)) || (((x <= 91 && y <= 34) && 51 <= x) && y <= 11)) || ((y <= 7 && x <= 51) && 7 <= x)) || (((y <= 6 && y <= 34) && x <= 96) && 51 <= x)) || ((y <= 37 && 37 <= x) && x <= 51)) || (((y <= 24 && y <= 34) && x <= 78) && 51 <= x)) || (((y <= 34 && x <= 70) && 51 <= x) && y <= 32)) || (((y <= 17 && x <= 85) && y <= 34) && 51 <= x)) || (((y <= 34 && x <= 92) && 51 <= x) && y <= 10)) || (((y <= 34 && x <= 74) && 51 <= x) && y <= 28)) || (((y <= 34 && y + 1 <= 0) && x <= 103) && 51 <= x)) || (((y <= 34 && y <= 0) && 51 <= x) && x <= 102)) || (((y <= 13 && y <= 34) && 51 <= x) && x <= 89)) || ((y <= 46 && 46 <= x) && x <= 51)) || ((25 <= x && y <= 25) && x <= 25)) || ((41 <= x && y <= 41) && x <= 51)) || ((x <= 55 && y <= 47) && 51 <= x)) || ((y <= 35 && 35 <= x) && x <= 35)) || (((y <= 34 && y <= 2) && 51 <= x) && x <= 100)) || ((20 <= x && y <= 20) && x <= 51)) || (((y <= 15 && y <= 34) && x <= 87) && 51 <= x)) || ((y <= 34 && 34 <= x) && x <= 34)) || (((y <= 34 && y <= 33) && x <= 69) && 51 <= x)) || (((x <= 80 && y <= 34) && y <= 22) && 51 <= x)) || ((y <= 43 && x <= 51) && 43 <= x)) || ((y <= 15 && 15 <= x) && x <= 51)) || ((x <= 63 && y <= 39) && 51 <= x)) || ((4 <= x && y <= 4) && x <= 51)) || ((y <= 42 && x <= 51) && 42 <= x)) || ((y <= 36 && x <= 51) && 36 <= x)) || (((y <= 34 && x <= 94) && 51 <= x) && y <= 8)) || ((8 <= x && x <= 51) && y <= 8)) || ((y <= 40 && x <= 62) && 51 <= x)) || ((y <= 42 && x <= 60) && 51 <= x)) || ((y <= 40 && x <= 40) && 40 <= x)) || ((y <= 46 && x <= 56) && 51 <= x)) || (((y <= 34 && x <= 83) && 51 <= x) && y <= 19)) || ((y <= 34 && 51 <= x) && x <= 68)) || ((x <= 64 && y <= 38) && 51 <= x)) || ((18 <= x && y <= 18) && x <= 51)) || ((y <= 14 && x <= 51) && 14 <= x)) || (((y <= 34 && y <= 7) && 51 <= x) && x <= 95)) || ((y <= 43 && x <= 59) && 51 <= x)) || (((x <= 82 && y <= 34) && y <= 20) && 51 <= x)) || (((y <= 34 && y <= 31) && x <= 71) && 51 <= x)) || ((x <= 66 && y <= 36) && 51 <= x)) || ((y <= 44 && 44 <= x) && x <= 44)) || (((x <= 99 && y <= 34) && y <= 3) && 51 <= x)) || ((28 <= x && x <= 51) && y <= 28)) || (((y <= 34 && y <= 23) && 51 <= x) && x <= 79)) || (((y <= 34 && y <= 18) && 51 <= x) && x <= 84)) || ((y <= 45 && 45 <= x) && x <= 51)) || ((10 <= x && x <= 10) && y <= 10)) || ((y <= 22 && 22 <= x) && x <= 22)) || (((y <= 34 && 51 <= x) && x <= 76) && y <= 26)) || ((51 <= x && x <= 54) && y <= 48)) || ((x <= 3 && y <= 3) && 3 <= x)) || ((23 <= x && y <= 23) && x <= 51)) || ((x <= 1 && 1 <= x) && y <= 1)) || ((y <= 12 && x <= 51) && 12 <= x)) || ((y <= 27 && 27 <= x) && x <= 27)) || (((x <= 0 && y <= 0) && 0 <= y) && 0 <= x)) || ((26 <= x && x <= 51) && y <= 26)) || ((x <= 51 && 51 <= x) && y <= 51)) || (((y <= 34 && x <= 93) && y <= 9) && 51 <= x)) || ((y <= 24 && 24 <= x) && x <= 51)) || ((y <= 17 && 17 <= x) && x <= 17)) || (((y <= 34 && y <= 30) && x <= 72) && 51 <= x)) || ((y <= 13 && 13 <= x) && x <= 51)) || ((y <= 37 && x <= 65) && 51 <= x)) || ((y <= 33 && 33 <= x) && x <= 51)) || ((38 <= x && x <= 51) && y <= 38)) || ((y <= 44 && 51 <= x) && x <= 58)) || (((y <= 34 && y <= 14) && x <= 88) && 51 <= x)) || (((y <= 34 && y <= 4) && x <= 98) && 51 <= x)) || ((11 <= x && x <= 51) && y <= 11)) || ((48 <= x && x <= 51) && y <= 48)) || ((39 <= x && y <= 39) && x <= 51)) || (((y <= 34 && y <= 5) && x <= 97) && 51 <= x)) || ((19 <= x && x <= 51) && y <= 19)) || ((y <= 6 && 6 <= x) && x <= 6)) || ((2 <= x && y <= 2) && x <= 2)) || (((y <= 34 && x <= 101) && 51 <= x) && y <= 1)) || (((y <= 34 && y <= 25) && 51 <= x) && x <= 77)) || (((y <= 34 && y <= 12) && x <= 90) && 51 <= x)) || ((y <= 41 && x <= 61) && 51 <= x)) || ((x <= 52 && y <= 50) && 51 <= x)) || ((x <= 51 && y <= 50) && 50 <= x)) || ((y <= 29 && 29 <= x) && x <= 29)) || (((y <= 34 && x <= 73) && y <= 29) && 51 <= x)) || ((5 <= x && y <= 5) && x <= 51)) || ((y <= 49 && 49 <= x) && x <= 51)) || (((y <= 34 && y <= 16) && 51 <= x) && x <= 86)) || ((y <= 35 && 51 <= x) && x <= 67)) || ((y <= 16 && 16 <= x) && x <= 51)) || ((47 <= x && y <= 47) && x <= 51) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-08-27 11:01:33,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...